Engineered for Ease Flake & Nugget Models RFF/UFF/RNF/UNF Ice Machines Technician’s Handbook Part Number 000015433_03 5/20
Safety Notices Read these precautions to prevent personal injury: • Read this manual thoroughly before operating, installing or performing maintenance on the equipment. Failure to follow instructions in this manual can cause property damage, injury or death. • Routine adjustments and maintenance procedures outlined in this manual are not covered by the warranty. • Proper installation, care and maintenance are essential for maximum performance and trouble-free operation of your equipment.
nWarning Follow these electrical requirements during installation of this equipment. • All field wiring must conform to all applicable codes of the authority having jurisdiction. It is the responsibility of the end user to provide the disconnect means to satisfy local codes. Refer to rating plate for proper voltage. • This appliance must be grounded. • This equipment must be positioned so that the plug is accessible unless other means for disconnection from the power supply (e.g.
nWarning Follow these precautions to prevent personal injury during installation of this equipment: • Installation must comply with all applicable equipment fire and health codes with the authority having jurisdiction. • To avoid instability the installation area must be capable of supporting the combined weight of the equipment and product. Additionally the equipment must be level side to side and front to back.
nWarning Follow these precautions to prevent personal injury while operating or maintaining this equipment. • Refer to nameplate to identify the type of refrigerant in your equipment. • Only trained and qualified personnel aware of the dangers are allowed to work on the equipment. • Read this manual thoroughly before operating, installing or performing maintenance on the equipment. Failure to follow instructions in this manual can cause property damage, injury or death. • Crush/Pinch Hazard.
nWarning Follow these precautions to prevent personal injury while operating or maintaining this equipment. • Objects placed or dropped in the bin can affect human health and safety. Locate and remove any objects immediately. • Never use sharp objects or tools to remove ice or frost. • Do not use mechanical devices or other means to accelerate the defrosting process. • When using cleaning fluids or chemicals, rubber gloves and eye protection (and/or face shield) must be worn.
nWarning Follow these precautions to prevent personal injury during use and maintenance of this equipment: • It is the responsibility of the equipment owner to perform a Personal Protective Equipment Hazard Assessment to ensure adequate protection during maintenance procedures. • Do Not Store Or Use Gasoline Or Other Flammable Vapors Or Liquids In The Vicinity Of This Or Any Other Appliance. Never use flammable oil soaked cloths or combustible cleaning solutions for cleaning.
Table of Contents General Information Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Flake Air & Water-Cooled Models . . . . . . . . . . . . 15 Nugget Air & Water-Cooled Models . . . . . . . . . . . 15 QuietQube Models with Remote Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Ice Machine Heat of Rejection . . . . . . . . . . . . . . . . . . . .
Maintenance Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Detailed Descaling and Sanitizing Procedure . . . 25 Remedial Cleaning Procedure for Heavily Scaled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Cleaning the Air filter and Condenser . . . . . . . . .
Troubleshooting UFF0200/UFF0350/UNF0200/UNF0300 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Self-Contained Air-Cooled . . . . . . . . . . . . . . . . . . . 41 RFF0320/RNF0320 Troubleshooting . . . . . . . . . . . . . . . 47 Self-Contained Air-Cooled . . . . . . . . . . . . . . . . . . . 47 RFF0620/RNF0620/RNF1100/RFF1300 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Specifications Bin Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Low Temperature Thermostat Evaporator safety thermostat . . . . . . . . . . . . . . . . 83 High Pressure Cutout (HPCO) Control . . . . . . . . . 84 Rotation Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Low Pressure Cutout (LPCO) Control . . . . . . . . . . 86 Fan Cycle Control . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Total System Refrigerant Charge . . . . . . . . . . . . . .
Diagrams Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Flake Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 UFF0200A/UFF350A Air-Cooled . . . . . . . . . . . . . 110 RFF0320A/RFF0620A Air-Cooled . . . . . . . . . . . . 112 RFF1220C QuietQube Head Section . . . . . . . . . . 114 RFF1300A Air-Cooled . . . . . . . . . . . . . . . . . . . . . . 116 RFF1300W Water-Cooled .
Refrigeration Tubing Schematics . . . . . . . . . . . . . . . . . 147 UFF0200/UFF0350/UNF0200/UNF0300 . . . . . . 147 RFF0320/RNF0320 Air-cooled . . . . . . . . . . . . . . . 148 RFF0620/RNF0620/RNF1100 Air & Water-cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 RNF1020C QuietQube Head Section & RCUF1000 Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 150 RFF1220C & RCUF1000 Condensing Unit . . . . . .
General Information Model Numbers FLAKE AIR & WATER-COOLED MODELS Flake Models Self Storage Air-Cooled UFF0200A UFF0350A – – – – Self Storage Water-Cooled – – – – – – Modular AirCooled – – RFF0320A RFF0620A RFF1300A RFF2500A Modular Water-Cooled – – – RFF0620W RFF1300W – NUGGET AIR & WATER-COOLED MODELS Self Storage Air-Cooled UNF0200A UNF0300A UNF0300A – – – Self Storage Water-Cooled – – – – – – Part Number 000015433_03 5/20 Modular Air-Cooled – – – RNF0320A RNF0620A RNF1100A Modular Water-Cooled –
QUIETQUBE MODELS WITH REMOTE CONDENSING UNIT Flake Models QuietQube Head RFF1220C RFF2200C RCUF Remote Condensing Unit RCUF1200 RCUF2200 Nugget Models QuietQube Head RNF1020C RNF2000C RCUF Remote Condensing Unit RCUF1000 RCUF2200 Ice Machine Heat of Rejection Series Ice Machine UFF0200 - RFF0320 UNF0200 UNF0300 - UFF0350 RNF0320 RFF0620 - RNF0620 RNF1100 - RFF1300 RFF2500 16 Heat of Rejection BTU/Hour 2400 2800 5000 3075 5200 7500 17000 Part Number 000015433_03 5/20
Ice Machine Warranty Information For warranty information visit: www.manitowocice.com/ Service/Warranty • Warranty Coverage Information • Warranty Registration • Warranty Verification Warranty coverage begins the day the ice machine is installed. WARRANTY REGISTRATION & CLAIM PROCEDURES Scan the QR code with your smart device or enter the link in a web browser to access: • Warranty registration • Warranty information • Warranty labor claim form WWW.MANITOWOCICE.
Manitowoc Cleaner/Descaler and Sanitizer Manitowoc Ice Machine Cleaner/Descaler and Sanitizer are available in 16 oz. (473 ml) bottles. These are the only cleaner and sanitizer approved for use with Manitowoc products. Cleaner/Descaler Part Number 16 oz. 000000084 1 gal N/A 18 Sanitizer Part Number 16 oz. 9405653 1 gal.
Installation Installation Requirements The location selected for the ice machine must meet the following criteria. If any of these criteria are not met, select another location. • Air temperature - Minimum 50°F (10°C), Maximum 110°F (43°C) • The location must be free of airborne and other contaminants. • The location must not be near heat-generating equipment or in direct sunlight. • The location must be capable of supporting the weight of the ice machine and a full bin of ice.
Potable Water Requirements • Plumbing must conform to local codes. • Water temperature: Minimum 37°F (3°C), Maximum 90°F (32°C). • Do not connect the ice machine to a hot water supply. Be sure all hot water restrictors installed for other equipment are working. (Check valves on sink faucets, dishwashers, etc.) • If water pressure exceeds maximum pressure (80 psig [552 kPa] obtain a water pressure regulator. • A water shut-off valve is required to clean the ice machine.
Ice Machine Clearance Requirements All Models Clearance Requirements Back 5” (12.7 cm) Sides/Top 8” (20.3 cm) RCUF Units Remote Condensing Unit Front/Back 24” (61.0 cm) Sides/Top 6” (15.2 cm) 24 inches clearance on top and sides is recommended for serviceability NOTE: Allowance must be made for removal when the ice machine is built-in. Removal of the top panel is required for cleaning and sanitizing.
Electrical Service nWarning All wiring must conform to local, state and national codes. VOLTAGE The maximum allowable voltage variation is ± 10% of the rated voltage on the ice machine model/serial number plate at compressor start-up. FUSE/CIRCUIT BREAKER A separate fuse/circuit breaker must be provided for each ice machine. Circuit breakers must be H.A.C.R. rated (does not apply in Canada). nWarning The ice machine must be grounded in accordance with national and local electrical codes.
Maximum Breaker/Minimum Circuit Amperage Chart NOTE: Due to continuous improvements, this information is for reference only. Please refer to the ice machine serial number tag to verify electrical data. Model/Serial tag information overrides information listed on these pages.
RFF/RNF QUIETQUBE MODEL HEAD SECTIONS Series Ice Machine RNF1020C RFF1220C RNF2000C RFF2200C Remote Air-Cooled Max Total Fuse/ Circuit Circuit Breaker Amps 115/1/60 15 Amp 2.9 208-230/1/60 15 Amp 1.4 208-230/1/60 15 AMP 3.2 208-230/1/60 15 Amp 3.
Maintenance Cleaning and Sanitizing Maintenance procedures covered in this manual are not covered by the warranty. ,Caution Use only Manitowoc approved Ice Machine Cleaner/ Descaler (part number 000000084) and Sanitizer (part number 9405653). Do not mix Cleaner/Descaler and Sanitizer solutions together. It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling. Read and understand all labels printed on bottles before use.
Detailed Descaling and Sanitizing Procedure Use Ice Machine Cleaner/Descaler part number 000000084. Use Ice Machine Sanitizer part number 9405653. Step 1 Remove front and top covers and set the toggle switch to the OFF position. Step 2 Remove all ice from the bin. Step 3 Turn off the ice making water supply and drain water from evaporator and reservoir. Step 4 Remove the top cover from water reservoir. Step 5 Follow the chart and premix cleaner and water.
Step 7 Move the toggle switch to the ON position. The ice machine will make ice with the descaling solution and deposit the ice in the bin. Add the remaining descaler/ water solution as the water level in the reservoir drops. NOTE: Do not allow the descaler/water solution level to drop below the minimum water level. The ice machine will discontinue the cycle if the water float switch opens. Step 8 After all of the descaler/water solution has been added turn on the ice making water supply.
D. Hand descale the removed part(s) in a properly mixed solution of descaler and water. Solution Type Water Mixed With Descaling 1 gal. (4 L) 16 oz (500 ml) Cleaner/Descaler Part Number 000000084 E. Use a soft-bristle brush or sponge (NOT a wire brush) to carefully clean the parts. F. Use the solution and a brush or sponge to clean all disassembled components and the inside of the bin. G. Rinse all cleaned parts with clear potable water. H. Mix a solution of sanitizer and water.
Step 11 Reassemble all components removed in step 10 into the ice machine. Step 12 Refer to chart and premix water and sanitizer. Amount of Water Amount of Sanitizer 1 Gallons (4 L) Water 1/2 ounce (15 ml) Step 13 Fill the evaporator and reservoir with sanitizer/ water solution. Important Prop Float Up to Prevent Low Water Level Shutdown Step 14 Move the toggle switch to the ON position. The ice machine will make ice with the sanitizer/water solution and deposit the ice in the bin.
Remedial Cleaning Procedure for Heavily Scaled Ice Machines Perform this procedure if you have some or all of these symptoms. • Excessive grinding, popping or squealing noises from the evaporator • Grinding noise from gearbox • Ice machine trips speed sensor NOTE: A Cleaning/Sanitizing Procedure must be performed after this procedure. Procedure to Clean Heavily Scaled Flake Ice Machines Step 1 Remove front and top covers and set the toggle switch to the OFF position.
Step 5 Refer to chart and premix cleaner/descaler with lukewarm water in a non-metallic container.
CLEANING THE AIR FILTER AND CONDENSER nWarning Disconnect electric power to the ice machine at the electric service switch before cleaning the condenser. The condenser fins are sharp. Use care when cleaning them. Air-Cooled Condenser Clean the condenser at least every six months. Follow the steps below. 1. Some models have a washable filter. Clean the filter with a mild soap and water solution. 2. Shine a flashlight through the condenser to check for dirt between the fins.
Removal from Service/Winterization ,Caution If water is allowed to remain in the ice machine in freezing temperatures, severe damage to some components could result. Damage of this nature is not covered by the warranty. Follow the procedure below. 1. Disconnect the electric power at the circuit breaker or the electric service switch. 2. Turn off the water supply. 3. Disconnect and drain the incoming ice-making water line at the rear of the ice machine. 4.
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Sequence of Operation Ice Making Sequence of Operation NOTE: Flake ice machines use an auger to remove ice from the evaporator. Occasional noises (creaks, groans, squeaks, or pops) are a normal part of the ice making process. UFF0200/UFF0350/UNF0200/UNF0300 OPERATION The ice machine will not start until: A. The rocker switch is moved to “ON”. B. Ice does not contact the bin thermostat bulb. C. The water reservoir is full of water.
RNF0620/RFF0620/RNF1100/RFF1300/RFF2500 OPERATION When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor. After 8 minutes of correct rotation, the time delay ends and the compressor starts.
RNF1020C/RFF1220C/RNF2000C/RFF2200C Remote Air-cooled Condensing Unit Models When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor.
Ice Production/Quality Check QUALITY CHECK Ice quality varies with ambient and water temperatures, and is measured by the amount of water in the ice. Generally speaking, higher incoming water temperature results in lower ice quality. Lower water temperature results in higher ice quality. ICE PRODUCTION CHECK NOTE: Ice production checks that are within 10% of the charted capacity are considered normal due to variances in air and water temperatures. Actual temperatures will seldom match the chart exactly. 1.
Thermostat Settings Bin Thermostat: The bin thermostat sensing bulb is located in the ice chute on modular models and in the bin thermostat holder on the right side of the bin on self storage models. The bin thermostat turns the ice machine on and off as the level of ice in the bin changes. Use the indicator on the ice machine label as the initial setting and adjust as required.
Thermostat Setting Chart NOTE: Settings are for reference only. Factory setting is indicated on control label and overrides information listed on this page.
Troubleshooting Diagnostic troubleshooting for the ice machine involves following flowcharts that are dependent on symptoms of the failed machine. Follow the flowcharts for the failure symptom and model you are working on. NOTE: Refer to the sequence of operation to determine where in the sequence the ice machine has failed. An example would be an ice machine that energizes the gear motor, but the compressor does not energize. Following the electrical flowchart will quickly and easily eliminate non issues.
Part Number 000015433_03 5/20 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Plug In Ice Machine, Reset Breaker Electrical Flowchart - UFF0200/UFF0350/UNF0200/UNF0300 AIR & WATER
Part Number 000015433_03 5/20 43 YES Evaporator Safety Thermostat Closed? RF0266 LPCO YES Bin Thermostat Closed? YES NO NO Allow Evaporator To Warm And Retest Yes Evaporator Cold? No Verify New Setting Cycles Machine On/Off Yes Adjusting Closes Thermostat? Verify New Setting Cycles Machine On/Off Remove Ice - Allow To Warm And Retest Adjusting Closes Thermostat? Yes No Yes Ice Contacting Thermostat? No No Replace Thermostat Replace Thermostat
Part Number 000015433_03 5/20 YES Low Water Level Switch Closed? YES Reservoir Full Of Water? YES NO NO Yes Repair Wiring Replace Switch or Float Assembly Restore Water Supply / Replace Water Inlet Valve Yes Water Level Switch Closed? Replace Switch or Float Assembly Power To Water Inlet Valve? No No
Part Number 000015433_03 5/20 45 YES Line Voltage To Compressor Relay Coil? YES Gear Motor Runs? NO NO No Wiring From Gearmotor Intact? No Line Voltage To Gear motor? Yes Repair Wiring Replace Gear Motor No Ice In Evaporator? Remove Auger From Evaporator Repair Wiring Yes Yes Yes No Rebuild Evaporator Thaw Evaporator Replace Gear Motor Gear Motor Runs?
Part Number 000015433_03 5/20 YES Line Voltage To Compressor? YES Relay Closed? YES NO NO Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions Water cooled only: Water Regulating Valve Functions Repair Wiring Replace Relay
RFF0320/RNF0320 Troubleshooting SELF-CONTAINED AIR-COOLED When the toggle switch is placed in the “ON” position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. Ice Chute Safety Switch C. Low Water Level Switch D. High Pressure Cut-out Switch E. Low Pressure Cut-Out Switch Placing the toggle switch in the ON position starts the gear motor and an 8 minute compressor time delay.
Part Number 000015433_03 5/20 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Plug In Ice Machine, Reset Breaker Electrical Flowchart - RFF0320/RNF0320
Part Number 000015433_03 5/20 49 Yes Chute Switch Closed? YES NO Yes Ice Contacting Actuator? Yes Evaporator Cold? NO No Remove Ice And Retest No Yes Actuator Functions? Yes Refrigerant Pressure Below Cut-out? Allow Evaporator To Warm And Retest No Yes Adjusting Closes Thermostat? Remove Ice - Allow To Warm And Retest Low Pressure Switch Closed? Ice Contacting Thermostat? Yes NO YES Bin Thermostat Closed? Yes Replace Thermostat Replace LPCO No Replace Switch Adjust Or Replac
Part Number 000015433_03 5/20 YES Low Water Level Switch Closed? YES Reservoir Full Of Water? YES NO NO Yes Repair Wiring Replace Switch or Float Assembly Restore Water Supply / Replace Water Inlet Valve Yes Water Level Switch Closed? Replace Switch or Float Assembly Power To Water Inlet Valve? No No
Part Number 000015433_03 5/20 51 YES Line Voltage To Compressor Time Delay? YES Gear Motor Runs? Yes NO NO No Gear Motor Centrifugal Switch Closed? No Line Voltage To Gear motor? Yes Replace Gear Motor Repair Wiring Yes No Thaw Evaporator Rebuild Or Replace Evaporator Yes No Replace Gear Motor Gear Motor Runs? Ice In Evaporator? Disconnect Evaporator From Gear Motor Repair Wiring Yes
Part Number 000015433_03 5/20 Line Voltage To Compressor? YES Contactor Closed? YES Line Voltage To Compressor Contactor Coil? Yes 10 Minute Time Delay Expired? Yes NO NO NO NO YES Repair Wiring Replace Contactor Delay Jumper Install Compressor Time No Replace Time Delay Relay Repair Wiring Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions Water cooled only: Water Regulating Valve Functions Yes Power To Cont
RFF0620/RNF0620/RNF1100/RFF1300 Troubleshooting SELF-CONTAINED AIR-COOLED Normal Operation When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch NOTE: Placing the toggle switch in the ON position starts the gear motor.
Part Number 000015433_03 5/20 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Plug In Ice Machine, Reset Breaker Electrical Flowchart – RNF0620/RFF0620/RNF1100/RFF1300 AIR & WATER
Part Number 000015433_03 5/20 55 YES High Pressure Control Closed? YES NO Resets & Trips Resets? Yes No Yes Refrigerant Pressure Above Cut-out? Yes Refrigerant Pressure Below Cut-out? Allow Evaporator To Warm And Retest No Yes Adjusting Closes Thermostat? Clean Condenser, Check Fan Motor Check Fan Cycle Control Evaporator Cold? NO No Remove Ice - Allow To Warm And Retest Low Pressure Control Closed? Ice Contacting Thermostat? Yes NO YES Bin Thermostat Closed? Yes Replace Thermos
Part Number 000015433_03 5/20 YES Low Water Level Switch Closed? YES Reservoir Full Of Water? Yes Chute Switch Closed? YES NO NO NO Yes Replace Switch or Float Assembly Power To Water Inlet Valve? Replace Switch Adjust Or Replace Actuator Repair Wiring Replace Switch or Float Assembly No Restore Water Supply / Replace Water Inlet Valve Yes No Yes Actuator Functions? Water Level Switch Closed? Remove Ice And Retest Yes No No Ice Contacting Actuator?
Part Number 000015433_03 5/20 57 YES 10 Minute Time Delay Expired? YES Gear Motor Runs? Yes NO NO Yes Wait 10 Minutes - Do Not Install Compressor Time Delay Jumper Repair Wiring No Line Voltage To Gear motor? Yes No Thaw Evaporator Rebuild Or Replace Evaporator Yes No Replace Gear Motor Gear Motor Runs? Ice In Evaporator? Disconnect Evaporator From Gear Motor
Part Number 000015433_03 5/20 Line Voltage To Compressor? YES Contactor Closed? YES Line Voltage To Compressor Contactor Coil? Yes NO NO NO YES Repair Wiring Replace Contactor Install Compressor Time Delay Jumper No Repair Wiring Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions Water cooled only: Water Regulating Valve Functions Replace Rotation Sensor/Time Delay Relay Yes Power To Contactor Coil?
RNF1020C/RFF1220C Troubleshooting QUIETQUBE REMOTE AIR-COOLED MODELS WITH REMOTE CONDENSING UNIT Normal Operation When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor.
Part Number 000015433_03 5/20 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Test Run Restore Power, Reset Breaker TRIPS NO YES Isolate And Ohm Each Component - Then Each Wire If Required NO Immediately Trips? YES Toggle Switch In Off Position? YES Isolate And Ohm Switch Check Wiring From Panel Electrical Flowchart - RNF1020C/RFF1220C QuietQube
Part Number 000015433_03 5/20 61 YES Reservoir Full Of Water? Yes Chute Switch Closed? YES Bin Thermostat Closed? YES NO NO NO Power To Water Inlet Valve? YES YES Ice Contacting Actuator? YES Ice Contacting Thermostat? NO NO Replace Thermostat NO Repair Wiring Replace Switch or Float Assembly Replace Switch Adjust Or Replace Actuator Verify New Setting Cycles Machine On/Off NO Restore Water Supply / Replace Water Inlet Valve YES YES Actuator Functions? YES Adjusting Closes T
Part Number 000015433_03 5/20 YES 10 Minute Time Delay Expired? YES Gear Motor Runs? YES Low Water Level Switch Closed? YES NO NO NO Disconnect Evaporator From Gear Motor Repair Wiring YES Wait 10 Minutes - Do Not Install Compressor Time Delay Jumper NO Line Voltage To Gear motor? Replace Switch or Float Assembly NO Ice In Evaporator? YES Thaw Evaporator Replace Gear Motor NO Rebuild Or Replace Evaporator YES Gear Motor Runs?
Part Number 000015433_03 5/20 63 YES Delay Relay Contacts Closed? YES Line Voltage To Left Delay Relay Coil? YES NO NO Replace Relay Install Compressor Time Delay Jumper On Left Evaporator Replace Relay NO Delay Relay Contacts Closed? Yes Power To Left Time Delay Relay Coil? YES NO Replace Rotation Sensor/Time Delay Repair Wiring
Part Number 000015433_03 5/20 YES Line Voltage To Compressor Contactor Coil? YES NO Repair Wiring YES Low Pressure Control Closed? YES High Pressure Control Closed? NO NO Line Voltage At Liquid Line Solenoid Valve? NO YES NO Clean Condenser, Check Fan Motor Check Fan Cycle Control Resets & Trips Resets? Replace Relay Clean Condenser, Check Fan Motor, Check Fan Cycle Control & Refrigeration System Replace HPCO NO Verify: Refrigerant Pressure is Higher Than LPCO Cut-in Both Shut-off
Part Number 000015433_03 5/20 65 Line Voltage To Compressor? YES Contactor Closed? YES NO NO YES Repair Wiring Replace Contactor Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions
RFF2500 Troubleshooting SELF-CONTAINED AIR-COOLED Normal Operation When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor. After 8 minutes of correct rotation the time delay ends and the compressor starts.
Part Number 000015433_03 5/20 67 YES Switch Illuminated? YES Toggle Switch In ON Position? Yes Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position No Trips Restore Power, Reset Breaker Yes Ohm Compressor Crankcase Heater And Toggle Switch Yes Toggle Switch In Off Position? Isolate And Ohm Each Component - Then Each Wire If Required No Immediately Trips? Electrical Flowchart – RF2500 Air-cooled
Part Number 000015433_03 5/20 Yes Left Side Chute Switch Closed? YES NO No Remove Ice And Retest Yes Yes Actuator Functions? Yes Refrigerant Pressure Above Cut-out? Clean Condenser, Check Fan Motor Check Fan Cycle Control No Yes Adjusting Closes Thermostat? Remove Ice - Allow To Warm And Retest No Ice Contacting Actuator? Resets & Trips Resets? NO High Pressure Control Closed? Ice Contacting Thermostat? Yes NO YES Bin Thermostat Closed? Yes Replace Thermostat Replace HPCO No
Part Number 000015433_03 5/20 69 YES Reservoir Full Of Water? NO NO Low Pressure Control Closed? Yes NO Right Side Chute Switch Closed? YES No Power To Water Inlet Valve? Yes Yes No Replace LPCO Replace Switch Adjust Or Replace Actuator Repair Wiring Replace Switch or Float Assembly Repair Refrigerant Leak, Evacuate, Recharge No No Restore Water Supply / Replace Water Inlet Valve Yes Water Level Switch Closed? Yes Refrigerant Pressure Below Cut-out? Yes Actuator Functions? All
Part Number 000015433_03 5/20 YES 10 Minute Time Delay Expired? YES Gear Motor Runs? YES Low Water Level Switch Closed? Yes NO NO NO Repair Wiring Yes Wait 10 Minutes - Do Not Install Compressor Time Delay Jumper No Line Voltage To Gear motor? Replace Switch or Float Assembly Yes No Thaw Evaporator Rebuild Or Replace Evaporator Yes No Replace Gear Motor Gear Motor Runs? Ice In Evaporator? Disconnect Evaporator From Gear Motor
Part Number 000015433_03 5/20 71 No YES NO Replace Relay Right Delay Relay Contacts Closed? No Power To Right Time Delay Relay Coil? Right Delay Relay Contacts Closed? Install Compressor Time Delay Jumper On Right Evaporator Yes NO YES Line Voltage To Right Delay Relay Coil? YES Replace Relay Left Delay Relay Contacts Closed? NO Power To Left Time Delay Relay Coil? Left Delay Relay Contacts Closed? Install Compressor Time Delay Jumper On Left Evaporator Yes NO YES Line Voltage To Left
Part Number 000015433_03 5/20 Line Voltage To Compressor? YES Contactor Closed? YES Line Voltage To Compressor Contactor Coil? Yes NO NO NO YES Repair Wiring Replace Contactor Repair Wiring Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions Water cooled only: Water Regulating Valve Functions
RNF2000C/RFF2200C Troubleshooting QUIETQUBE REMOTE AIR-COOLED MODELS WITH REMOTE CONDENSING UNIT Normal Operation When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor.
Part Number 000015433_03 5/20 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Test Run Restore Power, Reset Breaker TRIPS NO YES Isolate And Ohm Each Component - Then Each Wire If Required NO Immediately Trips? Electrical Flowchart - RFF2200C QuietQube Isolate And Ohm Switch Check Wiring From Panel YES Toggle Switch In Off Position? YES
Part Number 000015433_03 5/20 75 YES Right Side Chute Switch Closed? NO YES Ice Contacting Actuator? Remove Ice And Retest NO Remove Ice And Retest YES YES NO NO Ice Contacting Actuator? Remove Ice - Allow To Warm And Retest NO Left Side Chute Switch Closed? Ice Contacting Thermostat? YES NO YES Bin Thermostat Closed? YES YES Actuator Functions? YES Actuator Functions? YES Adjusting Closes Thermostat? Replace Thermostat NO Adjust Or Replace Actuator Replace Switch NO Replac
Part Number 000015433_03 5/20 YES Do Both Gear Motors Run? YES Low Water Level Switch Closed? YES Reservoir Full Of Water? YES NO NO NO YES NO Line Voltage To Gear motors? Repair Wiring YES Replace Switch or Float Assembly Power To Water Inlet Valve? NO Disconnect Evaporator From Gear Motor Restore Water Supply / Replace Water Inlet Valve YES Water Level Switch Closed? NO Ice In Evaporator? YES Gear Motor Runs? Repair Wiring Thaw Evaporator YES Replace Gear Motor NO Repla
Part Number 000015433_03 5/20 77 YES Right Delay Relay Contacts Closed? YES Line Voltage To Right Delay Relay Coil? YES NO NO Replace Relay Install Compressor Time Delay Jumper On Right Evaporator Replace Relay NO Right Delay Relay Contacts Closed? YES Power To Right Time Delay Relay Coil? YES Repair Wiring Replace Right Rotation Sensor/Time Delay NO
Part Number 000015433_03 5/20 YES Left Delay Relay Contacts Closed? YES Line Voltage To Left Delay Relay Coil? YES 10 Minute Time Delay Expired? Yes NO NO NO Replace Relay Install Compressor Time Delay Jumper On Left Evaporator No Wait 10 Minutes - Do Not Install Compressor Time Delay Jumper Left Delay Relay Contacts Closed? Yes Power To Left Time Delay Relay Coil? Yes No Replace Left Rotation Sensor/Time Delay Repair Wiring
Part Number 000015433_03 5/20 79 YES Line Voltage To Compressor Contactor Coil? YES YES Repair Wiring YES Low Pressure Control Closed? NO High Pressure Control Closed? NO NO NO YES Line Voltage At Liquid Line Solenoid Valve? Clean Condenser, Check Fan Motor Check Fan Cycle Control Resets & Trips Resets? NO Replace Relay Clean Condenser, Check Fan Motor, Check Fan Cycle Control & Refrigeration System Replace HPCO NO Verify: Refrigerant Pressure is Higher Than LPCO Cutin Both Shut-off
Part Number 000015433_03 5/20 Line Voltage To Compressor? YES Contactor Closed? YES NO NO YES Repair Wiring Replace Contactor Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions
Part Number 000015433_03 5/20 81 Low Low Normal High High Increases with run time Discharge Pressure Suction Pressure Evaporator Inlet Temperature Evaporator Outlet Temperature Compressor Discharge Line Temperature Normal Range = > 165° @ 70° - 210° @ 110° > 74°C @ 21°C - 99°C @ 43°C) Low on Refrigerant Normal Normal Low High High Overcharge of Refrigerant High Increases with run time High High High High Non Condensible in System High Increases with run time Low Low Low Low Res
Part Number 000015433_03 5/20 Low Normal High High Suction Pressure Evaporator Inlet Temperature Evaporator Outlet Temperature Discharge Line Temperature Low Discharge Pressure Low on Refrigerant Normal Normal Normal or Low High High Overcharge of Refrigerant High Increases With Run Time High High High High Non Condensible In System High Increases With Run Time High > 12° Differential between Inlet and Outlet Normal Low Low Liquid Line Restriction, Suction Line Restriction,
Component Specifications BIN THERMOSTAT Setting Cut-Out Cut-In UFF0200 / UNF0200 UNF0300 / UFF0350 Model 5 37°F ±1 3°C ±.1 43°F ±1 6°C ±.1 RFF0320 / RFF0620 RNF0620 / RNF1100 RNF1020C / RFF1300 RFF1220C / RNF2000C RFF2200C / RFF2500 3 35°F ±1 1.6°C ±.1 41°F ±1 5.0°C ±.1 LOW TEMPERATURE THERMOSTAT EVAPORATOR SAFETY THERMOSTAT Model UFF0200 / UNF0300 UNF0200 / UNF0300 RFF0320 RNF0320 / UFF0350 Setting Cut-Out Cut-In 5 -1°F ±1 -17.2°C ±.1 39°F ±1 4°C ±.1 6 -3°F ±1 -19.5°C ±.1 39°F±.
HIGH PRESSURE CUTOUT (HPCO) CONTROL Model Cut-Out Cut-In RNF0320 / RFF0620 RFF1300 / RNF0320 RNF0620 / RNF1100 325 psig ±10 (2250 kPa ±69) 22.5 bar ±.69 200 psig ±10 (1379 kPa ±69) 13.79 bar ±.69 Auto Reset RFF2500 435 psig ±10 (3000 kPa ±69) 30 bar ±.69 RNF1020C / RCUF1000 RFF1220C / RCUF1200 RNF2000C / RCUF2200 RFF2200C / RCUF2200 84 450 psig ±10 (3100 kPa ±69) 31 bar ±.69 Manual Reset 300 psig ±10 (2068 kPa ±69) 20 bar ±20.
ROTATION SENSOR RFF0620 / RNF0620 / RNF1100 / RNF1020C / RFF1300 RNF2000C / RFF2500 Light Definition Yellow Blinking Time Delay Period Yellow Solid Normal Operation Sensing Red Blinking 2 Flashes Per Second Time Delay Period - First 1 To 7 Faults Red Solid Lockout - 8 Consecutive Faults Due To A Speed Fault Remove/Restore Power To Reset Red Blinking Slowly Lockout - 8 Consecutive Faults Due To A Short Circuit Operation: 1. At start up, the sensor starts an 8 minute compressor time delay period.
LOW PRESSURE CUTOUT (LPCO) CONTROL Model Cut-Out Cut-In UFF0200 / RNF0320 RNF0620 / RFF0620 RNF1100 / RFF1300 RFF2200C / RCUF2200 7 psig ±2 (.5 bar ±.2) 36 psig ±2 (2.5 bar ±.2) RFF2500 12 psig ±2 (.8 bar ±.2) Manual Reset Model Cut-Out (Open) Cut-In (Close) UFF0200 / RNF0320 RFF0320 / UFF0350 RNF0620 / RFF0620 RFF1300 / RFF2500 200 ±5 (15.17 bar ±.34) 250 ±5 (17.23 bar ±.34) UNF0200 / UNF0300 RNF0320 / UFF0350 RFF0620 / RNF1100 RFF1300 / RFF2500 225 ±5 (15.51 bar ±.34) 275 ±5 (18.96 bar ±.
TOTAL SYSTEM REFRIGERANT CHARGE This information is for reference only. Model/Serial plate information overrides information listed in this table. Model Refrigerant Charge Flake Models UFF0200A 9.4 oz / 265 g UFF0350A 11.25 oz / 320 g RFF0320A 13.6 oz / 395 g RFF0620A 20.8 oz / 590 g RFF0620W 16.9 oz / 480 g RFF1300A 21.9 oz / 620 g RFF1220C 156 oz / 4.42 kg RFF2200C 240 oz / 6.08 kg RFF2500A 67 oz / 1900 g Nugget Models UNF0200A 8.5 oz / 240 g UNF0300A 14.8 oz / 420 g RNF0620A 18.
FILTER-DRIERS The size of the filter-drier is important. The refrigerant charge is critical. Using an improperly sized filter-drier will cause the ice machine to be improperly charged with refrigerant. Important Driers are covered as a warranty part. The drier must be replaced any time the system is opened for repairs. SUCTION CLEANUP FILTER-DRIER Contaminated systems must have a suction line filter-drier installed to remove contaminations.
Charts Ice Production & Refrigerant Pressure These charts are used as guidelines to verify correct ice machine operation. Accurate collection of data is essential to obtain the correct diagnosis. • Zero out manifold gauge set before obtaining pressure readings to avoid mis-diagnosis. • Discharge and suction pressure are highest at the beginning of the cycle. Allow system to stabilize for a minimum of 10 minutes, then verify the pressures are within the range indicated.
Flake Models UFF200A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RFF0320A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
UFF0350A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RFF0620A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RFF0620W SELF CONTAINED WATER-COOLED Characteristics vary depending on operating conditions.
RFF1220C WITH RCUF1200 QUIETQUBE REMOTE CONDENSER AIR COOLED Characteristics vary depending on operating conditions ICE PRODUCTION Air Temperature Water Temperature 24 Hour Ice Production -20°F/50°F -29°C/10°C 1413 lbs 641 kgs 70°F/50°F 21°C/10°C 1092 lbs 495 kgs 90°F/70°F 32°C/21°C 958 lbs 435 kgs 120°F/70°F 49°C/21°C 603 lbs 274 kgs OPERATING PRESSURES PSIG & kPa Air Temperature Entering Condenser °F/°C Discharge Pressure Freeze Cycle Suction Pressure 50°F PSIG 10°C kPa 185-200 1276-1379 23
RFF1300A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RFF1300W SELF CONTAINED WATER-COOLED Characteristics vary depending on operating conditions.
RFF2200C WITH RCUF2200 QUIETQUBE REMOTE CONDENSER AIR COOLED Characteristics vary depending on operating conditions ICE PRODUCTION Air Temperature Water Temperature 24 Hour Ice Production -20°F/50°F -29°C/10°C 2403 lbs 1090 kgs 70°F/50°F 21°C/10°C 2063 lbs 936 kgs 90°F/70°F 32°C/21°C 1702 lbs 772 kgs 120°F/70°F 49°C/21°C 1073 lbs 487 kgs OPERATING PRESSURES PSIG& kPa Air Temperature Around Ice Machine °F/°C Discharge Pressure Suction Pressure 50°F PSIG 16°C kPa 175-200 1207-1379 26-31 176-214
RFF2500A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
Nugget Models UNF0200A SELF STORAGE AIR-COOLED Characteristics vary depending on operating conditions.
UNF0300A SELF STORAGE AIR-COOLED Characteristics vary depending on operating conditions.
RNF0320A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RNF0620A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RNF0620W WATER-COOLED Characteristics vary depending on operating conditions.
RNF1020C WITH RCUF1000 QUIETQUBE REMOTE CONDENSER AIR COOLED Characteristics vary depending on operating conditions ICE PRODUCTION Air Temperature Water Temperature 24 Hour Ice Production -20°F/50°F -29°C/10°C 1282 lbs 582 kgs 70°F/50°F 21°C/10°C 1116 lbs 506 kgs 90°F/70°F 32°C/21°C 900 lbs 408 kgs 110°F/90°F 43°C/32°C 693 lbs 314 kgs OPERATING PRESSURES PSIG & kPa Air Temperature Around Ice Machine °F/°C Discharge Pressure Freeze Cycle Suction Pressure 60°F PSIG 16°C kPa 240-250 1655-1724 33
RNF1100A AIR-COOLED Characteristics vary depending on operating conditions.
RNF1100W WATER-COOLED Characteristics vary depending on operating conditions.
RNF2000C QUIETQUBE REMOTE CONDENSER AIR COOLED Characteristics vary depending on operating conditions ICE PRODUCTION Air Temperature Water Temperature 24 Hour Ice Production -20°F/50°F -29°C/10°C 2300 lbs 1043 kgs 70°F/50°F 21°C/10°C 1915 lbs 869 kgs 90°F/70°F 32°C/21°C 1476 lbs 670 kgs 120°F/70°F 49°C/21°C 810 lbs 367 kgs OPERATING PRESSURES PSIG & kPa Air Temperature Around Ice Machine °F/°C 108 Freeze Cycle Discharge Pressure Suction Pressure -20°F/50°F -29°C/10°C 160-180 24-34 70°F PSIG
Diagrams Wiring Diagrams The following pages contain electrical wiring diagrams. Be sure you are referring to the correct diagram for the ice machine you are servicing. nWarning Always disconnect power before working on electrical circuitry.
Flake Models UFF0200A/UFF350A AIR-COOLED Refer to Nameplate for Voltage Rating 241304_01 See page 144 for compressor start component wiring.
Wiring Diagram Legend UFF0200A/UFF0350A Air-cooled 1 Gear motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 12 High temperature limit (snap disc) 13 Fan cycle control 15 Contactor 17 Water level switch 24 On/Off switch 27 Low pressure safety switch Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red PK Pink Part Number 000015433_03 5/20 111
RFF0320A/RFF0620A AIR-COOLED Refer to Nameplate for Voltage Rating 241182_01 See page 144 for compressor start component wiring.
Wiring Diagram Legend RFF0320A/RFF0620A Air-cooled 1 Gear motor 2 Compressor 4 Fan motor 6 Water inlet valve 10 Low water level switch 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Chute safety switch 19 High pressure safety switch 24 On/Off switch 27 Low pressure safety switch 30 Rotation sensor 35 Compressor time delay by-pass Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red PK Pink Part Number 000015433_03
RFF1220C QUIETQUBE HEAD SECTION Refer to Nameplate for Voltage Rating Connections • A, B, & C connect to a remote panel when used Jumper must be removed when remote panel is used • 1 & 2 connect to line voltage • 3 & 4 energizes remote condensing unit (RCU) refrigeration - 2 Amp max • 5 terminal or junction block located on top of the junction box. • 6 junction box at rear of ice machine 6 5 241151_03 See page 140 for condensing unit wiring diagram.
Wiring Diagram Legend RFF1220C Head Section 1 Gear motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 17 Water level switch 18 Ice chute safety switch 24 On/Off switch 30 Rotation sensor 35 Compressor time delay by-pass 38 Solenoid valve 50 Relay Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red VT Violet OG Orange Part Number 000015433_03 5/20 115
RFF1300A AIR-COOLED Refer to Nameplate for Voltage Rating 2411981_01 See page 145 for compressor start component wiring.
Wiring Diagram Legend RFF1300A Air-cooled 1 Gear motor 2 Compressor 4 Fan motor 6 Water inlet valve 10 Low water level switch 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Chute safety switch 19 High pressure safety switch 24 On/Off switch 27 Low pressure safety switch 30 Rotation sensor 35 Compressor time delay bypass 38 Solenoid valve Wire Color Designation GY Grey WH White BU Blue BN Brown BK Black RD Red PH Pink Part Number 000
RFF1300W WATER-COOLED Refer to Nameplate for Voltage Rating L BN BN BN 11 K1 5 6 BK 1 2 BU M P BU 19 27 2 15 P RD RD 18 BK RD RD BK 38 BK 10 24 17 WH K1 35 BU BU BU GY RD BU BK BN N BU 1 BU ~ ~ M 30 6 BU See page 145 for compressor start component wiring.
Wiring Diagram Legend RFF1300W Water-cooled 1 Gear motor 2 Compressor 6 Water inlet valve 10 Low water level switch 11 Bin thermostat 15 Contactor 17 Water level switch 18 Chute safety switch 19 High pressure safety switch 24 On/Off switch 27 Low pressure safety switch 30 Rotation sensor 35 Compressor time delay bypass 38 Solenoid valve Wire Color Designation GY Grey WH White BU Blue BN Brown BK Black RD Red PH Pink Part Number 000015433_03 5/20 119
RNF2000C QUIETQUBE HEAD SECTION Refer to Nameplate for Voltage Rating Connections • A, B, & C connect to a remote panel when used Jumper must be removed when remote panel is used • 1 & 2 connect to line voltage • 3 & 4 energizes remote condensing unit (RCU) refrigeration - 2 Amp max A A RD B BK C L RD 2 BU 3 BU 4 11 24 18 18 BK BK RD BU 1 RD N BU RD 10 WH WH BU GY WH BU RD 21 21 BN BU GY GY BK BN BU GY A BK BK 35 BU BU BK BN 30 BU 35 BU RD BU BK BN 30 38 BU
Wiring Diagram Legend RNF2000C Head Section 1 Gear Motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 17 Water level switch 18 Ice chute safety switch 24 On/Off switch 30 Rotation sensor 35 Compressor time delay by-pass 38 Solenoid Valve 50 Relay Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red OG Orange Part Number 000015433_03 5/20 121
RFF2200C QUIETQUBE HEAD SECTION Refer to Nameplate for Voltage Rating Connections • A, B, & C connect to a remote panel when used Jumper must be removed when remote panel is used • 1 & 2 connect to line voltage • 3 & 4 energizes remote condensing unit (RCU) refrigeration - 2 Amp max 241152_04 See page 140 for condensing unit wiring diagram.
Wiring Diagram Legend RFF2200C Head Section 1 Gear motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 17 Water level switch 18 Ice chute safety switch 24 On/Off switch 30 Rotation sensor 35 Compressor time delay by-pass 38 Solenoid valve 50 Relay Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red OG Orange Part Number 000015433_03 5/20 123
RFF2500A AIR-COOLED Refer to Nameplate for Voltage Rating Connections • A & B connect to a remote panel when used - Jumper must be removed when remote panel is used • C & D energize a remote alarm indication when used 241142_02 See page 145 for compressor start component wiring.
Wiring Diagram Legend RFF2500A Air-Cooled 1 Gear motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Ice chute safety switch 19 High pressure safety switch 21 Compressor relay 24 On/Off switch 25 Compressor time delay 27 Low pressure cut out 29 Compressor time delay relay 30 Rotation sensor 35 Compressor time delay by-pass 37 Remote indicator panel terminals 3
Nugget Models UNF0200A/UNF0300A AIR-COOLED Refer to Nameplate for Voltage Rating 24683_05 See page 144 for compressor start component wiring.
Wiring Diagram Legend UNF0200A/UNF0300A Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water Inlet valve 7 Evaporator low temperature safety thermostat 10 Low water level safety 11 Bin thermostat 12 High temperature limit (snap disc) 13 Fan cycle control 15 Contactor 17 Water level switch 21 Compressor relay 24 On/Off switch Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red PK Pink Part Number 000015433_03 5/20 127
RNF0320A AIR-COOLED Refer to Nameplate for Voltage Rating 241289_01 See page 144 for compressor start component wiring.
Wiring Diagram Legend RNF0320A Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 7 Evaporator low temperature safety thermostat 10 Low water level safety 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Ice chute safety switch 24 On/Off switch 25 Compressor time delay 35 Compressor time delay by-pass Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red PK Pink Part Number 000015433_03 5/20
RNF0620A AIR-COOLED Refer to Nameplate for Voltage Rating L BN BN BN BK K1 5 1 11 RD BK 6 2 M BU P 18 BK RD BK BK 10 24 19 RD 27 2 15 P 17 WH K1 P 13 35 BU BU PH GY M M N BU 4 BU 1 BU BU BK BN RD 30 BU ~ ~ ~ BU 6 241182_01 See page 144 for compressor start component wiring.
Wiring Diagram Legend RNF0620A Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Ice chute safety switch 19 High pressure cut out 24 On/Off switch 27 Low pressure cut out 30 Rotation sensor 35 Compressor time delay by-pass Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red PH Pink Part Number 000015433_03 5/20 1
RNF0620W WATER-COOLED Refer to Nameplate for Voltage Rating 241182_01 See page 144 for compressor start component wiring.
Wiring Diagram Legend RNF0620W Water-cooled 1 Gear Motor 2 Compressor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 15 Contactor 17 Water level switch 18 Ice chute safety switch 19 High pressure cut out 24 On/Off switch 27 Low pressure cut out 30 Rotation sensor 35 Compressor time delay by-pass Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red PK Pink Part Number 000015433_03 5/20 133
RNF1020C QUIETQUBE HEAD SECTION Refer to Nameplate for Voltage Rating Connections • A, B, & C connect to a remote panel when used Jumper must be removed when remote panel is used • 1 & 2 connect to line voltage • 3 & 4 energizes remote condensing unit (RCU) refrigeration - 2 Amp max • 5 terminal or junction block located on top of the junction box. • 6 junction box at rear of ice machine 241151_03 See page 140 for condensing unit wiring diagram.
Wiring Diagram Legend RNF1020C Head Section 1 Gear Motor 6 Water inlet valve 10 Low water level switch 11 Bin thermostat 17 Water level switch 18 Chute safety switch 21 Relay 24 On/Off switch 30 Rotation sensor 35 Compressor time delay by-pass (Service Staff only) 38 Solenoid Valve Wire Color Designation A Orange B White BL Blue G Grey M Brown N Black R Red V Violet Part Number 000015433_03 5/20 135
RNF1100A AIR-COOLED Refer to Nameplate for Voltage Rating 241198_01 See page 144 for compressor start component wiring.
Wiring Diagram Legend RNF1100A Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Ice chute safety switch 19 High pressure cut out 24 On/Off switch 27 Low pressure cut out 30 Rotation sensor 35 Compressor time delay by-pass 38 Solenoid Wire Color Designation B White BL Blue G Grey M Brown N Black R Red RS Pink Part Number 000015433_0
RNF1100W WATER-COOLED Refer to Nameplate for Voltage Rating 241198_01 See page 144 for compressor start component wiring.
Wiring Diagram Legend RNF1100W Water-Cooled 1 Gear Motor 2 Compressor 6 Water inlet Valve 10 Low Water Level Switch 11 Bin Thermostat 15 Contactor 17 Water level switch 18 Chute safety switch 19 High pressure safety switch 24 On/Off switch 27 Low pressure safety switch 30 Rotation sensor 35 Compressor time delay by-pass (Service staff only) 38 Solenoid Valve Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red PK Pink Part Number 000015433_03 5/2
Condensing Units RCUF CONDENSING UNIT 1PH Refer to Nameplate for Voltage Rating 6 1 9 10 2 7 8 12 4 3 11 13 5 6 000015813_00 140 Part Number 000015433_03 5/20
Wiring Diagram Legend RCUF Condensing Unit 1 High pressure cutout control 2 Thermostat - Receiver heater 3 Receiver heater RCUF1200 1 heater - RCUF1000 2 heaters 4 Low pressure cutout control 5 Contactor coil 6 Contactor contacts 7 Condenser fan motor 8 Condenser fan motor run capacitor 9 Compressor 10 Compressor overload 11 Compressor run capacitor 12 Compressor relay 13 Compressor start capacitor Wire Color Designation BLK Black YEL Yellow RED Red Compressor Windings C Com
RCUF CONDENSING UNIT 3PH Refer to Nameplate for Voltage Rating 9 6 1 2 4 3 7 8 5 000015813_00 6 142 Part Number 000015433_03 5/20
Wiring Diagram Legend RCUF Condensing Unit 1 High pressure cutout control 2 Thermostat - Receiver heater 3 Receiver heater 4 Low pressure cutout control 5 Contactor coil 6 Contactor contacts 7 Condenser fan motor 8 Condenser fan motor run capacitor 9 Compressor Part Number 000015433_03 5/20 143
Compressor Start Component Wiring UFF0200/UNF0200 52 50 L1 (R) (S) (C) 54 53 2 L2 1 5 UNF0300/RFF0320/UFF0350/UNF0350/RFF0620 52 51 BLU (R) 54 144 (YEL) 50 L1 L2 (YEL) (S) (C) 53 2 1 5 Part Number 000015433_03 5/20
RFF1300/RFF2500 52 (YEL) 51 BLU (YEL) 50 L1 (R) 54 (S) (C) 53 2 L2 1 5 Compressor Wiring Legend 50 Compressor 51 Run Capacitor 52 Start Capacitor 53 Relay 54 Overload Part Number 000015433_03 5/20 145
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Refrigeration Tubing Schematics UFF0200/UFF0350/UNF0200/UNF0300 6 7 5 2 4 1 3 Tubing Diagram Legend 1 Compressor 2 Condenser 3 Liquid Line Drier 4 Capillary tube 5 Accumulator 6 Heat Exchanger 7 Evaporator Part Number 000015433_03 5/20 147
RFF0320/RNF0320 AIR-COOLED 5 6 4 2 3 1 Tubing Diagram Legend 148 1 Compressor 2 Condenser 3 Liquid Line Drier 4 Heat Exchanger 5 Automatic Expansion Valve 6 Evaporator Part Number 000015433_03 5/20
RFF0620/RNF0620/RNF1100 AIR & WATER-COOLED 1 2 5 3 4 6 7 8 Tubing Diagram Legend 1 Compressor 2 Condenser (Air or Water-cooled) 3 Liquid Line Drier 4 Liquid Line Solenoid Valve 5 Suction Accumulator 6 Thermostatic Expansion Valve 7 Liquid Accumulator 8 Evaporator Part Number 000015433_03 5/20 149
RNF1020C QUIETQUBE HEAD SECTION & RCUF1000 CONDENSING UNIT 4 5 6 3 14 7 1 13 2 15 12 8 9 10 11 150 Part Number 000015433_03 5/20
Tubing Diagram Legend 1 Compressor 2 Check Valve 3 Head Pressure Control Valve 4 Condenser (air or water cooled) 5 Receiver 6 Condensing unit Liquid Line Drier 7 Liquid Line Shut-off Valve 8 Ice Machine Liquid Line Drier 9 Liquid Line Solenoid Valve 10 Thermostatic Expansion Valve 11 Evaporator 12 S Trap (20’ + Rise Only) 13 Suction Line Shut-off Valve 14 Suction Line Filter 15 Suction Accumulator Part Number 000015433_03 5/20 151
RFF1220C & RCUF1000 CONDENSING UNIT 5 6 3 13 1 12 7 2 4 14 8 9 10 11 152 Part Number 000015433_03 5/20
RFF1220C & RCUF1000 Tubing Diagram Legend 1 Compressor 2 Check Valve 3 Head Pressure Control Valve 4 Condenser (air or water cooled) 5 Receiver 6 Condensing Unit Liquid Line Drier 7 Liquid Line Shut-off Valve 8 Ice Machine Liquid Line Drier 9 Liquid Line Solenoid Valve 10 Thermostatic Expansion Valve 11 Evaporator 12 Suction Line Shut-off Valve 13 Suction Line Filter 14 Suction Accumulator NOTE: Dotted rectangle indicates ice machine head section.
RNF2000C QUIETQUBE HEAD SECTION & RCUF2200 CONDENSING UNIT 4 5 6 3 14 13 7 1 2 15 9 10 12 11 154 11 Part Number 000015433_03 5/20
Tubing Diagram Legend 1 Compressor 2 Check Valve 3 Head Pressure Control Valve 4 Condenser (air or water cooled) 5 Receiver 6 Condensing Unit Liquid Line Drier 7 Liquid Line Shut-off Valve 8 Ice Machine Liquid Line Drier 9 Liquid Line Solenoid Valve 10 Thermostatic Expansion Valve 11 Evaporator 12 Liquid Accumulator 13 Suction Line Shut-off Valve 14 Suction Line Filter 15 Suction Accumulator Part Number 000015433_03 5/20 155
RFF2200C QUIETQUBE HEAD SECTION & RCUF2200 CONDENSING UNIT 4 5 6 3 14 13 7 1 2 15 8 9 10 11 12 156 12 Part Number 000015433_03 5/20
Tubing Diagram Legend 1 Compressor 2 Check Valve 3 Head Pressure Control Valve 4 Condenser (air or water cooled) 5 Receiver 6 Condensing unit Liquid Line Drier 7 Liquid Line Shut-off Valve 8 Ice Machine Liquid Line Drier 9 Liquid Line Solenoid Valve 10 Thermostatic Expansion Valve 11 Liquid Accumulator 12 Evaporator 13 Suction Line Shut-off Valve 14 Suction Line Filter 15 Suction Accumulator Part Number 000015433_03 5/20 157
RFF1300 AIR & WATER-COOLED 1 2 5 3 4 6 7 8 Tubing Diagram Legend 1 158 Compressor 2 Condenser 3 Liquid Line Drier 4 Liquid Line Solenoid Valve 5 Suction Accumulator 6 Thermostatic Expansion Valve 7 Liquid Accumulator 8 Evaporator Part Number 000015433_03 5/20
RFF2500 AIR-COOLED 1 2 5 3 4 6 7 8 8 Tubing Diagram Legend 1 Compressor 2 Condenser 3 Liquid Line Drier 4 Liquid Line Solenoid Valve 5 Suction Accumulator 6 Thermostatic Expansion Valve 7 Liquid Accumulator 8 Evaporator Part Number 000015433_03 5/20 159
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