N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Introduction These ice machines are the result of years of experience with flaked and nugget ice machines. The latest in electronics has been coupled with the time tested Scotsman flaked ice system to provide reliable ice making and the features needed by customers.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Installation: This machine is designed to be used indoors, in a The quality of the water supplied to the ice machine controlled environment. Operation outside the limits will have an impact on the time between cleanings listed here will void the warranty. and ultimately on the life of the product. Water can contain impurities either in suspension or in solution. Suspended solids can be filtered out.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Location: While the machine will operate satisfactorily within All models are the same width: 22 inches. All the air and water temperature limits, it will produce models are the same depth: 24 inches. more ice when those temperatures are nearer the Bin & adapter list: lower limits. Avoid locations that are hot, dusty, greasy or confined. Air cooled models need plenty of room air to breathe.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual F0522, F0822, N0522, or N0822 Cabinet Layout 55.9 22.00 REF. 58.1 22.89 31.8 12.50 ULTRA SONIC BIN LEVEL SENSOR OPTIONAL PLAN VIEW 61 24.00 REF. [58.5] 23.00 41.9 16.50 7.4 2.92 ICE DROP OPENING 7.1 2.81 LOUVER AND REMOVABLE FILTER A/C UNITS ONLY 16.5 6.48 55.9 22.00 10.9 4.30 Note: Bin Top Cut-outs for drop zone should include ultrasonic sensor location .88 DIA. ELECTRICAL CONNECTION REMOTE COND.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual F1222, F1522, N1222 or N1522 Cabinet Layout 55.9 22.00 58.1 22.89 REF. 31.8 12.50 ULTRA SONIC BIN LEVEL SENSOR OPTIONAL [68.6] 27.00 61 24.00 REF. LOUVER AND REMOVABLE FILTER A/C UNITS ONLY PLAN VIEW 41.9 16.50 ICE DROP OPENING 7.4 2.92 7.1 2.81 55.9 22.00 16.5 6.48 Note: Bin Top Cut-outs for drop zone should include ultrasonic sensor location FRONT VIEW 10.9 4.30 .88 DIA. ELECTRICAL ACCESS .88 DIA.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Unpacking & Install Prep Remove the carton from the skid. Check for hidden Panel Removal freight damage, notify the carrier immediately if any is found. Retain the carton for the carrier’s inspection. The machine is not bolted to the skid. If strapped remove the strap. Place on Bin or Dispenser If reusing an existing bin, be sure that the bin is in good shape and that the gasket tape on the top is not torn up.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Water The water supply for ice making must be cold, potable water. There is a single 3/8” male flare potable water connection on the back panel. Water cooled models also have a 3/8” FPT inlet connection for the water cooled condenser. Chilled water can also be used for this connection. Drain There is one ¾” FPT condensate drain fitting at the back of the cabinet.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Electrical The machine does not include a power cord, one must be field supplied or the machine hard wired to the electrical power supply. The junction box for the electrical connection is on the back panel. Electrical power is connected to wires inside the junction box in the back of the cabinet. Use a strain relief and connect a ground wire to the ground screw.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Refrigeration - Remote Condenser Models Remote condenser models have additional installation needs. Note: A headmaster is required for all remote condenser systems. Prior condensers did not have The correct remote condenser fan and coil must be a headmaster. New head / old condenser retrofits connected to the ice making head. Liquid and can use headmaster kit KPFHM.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Remote Condenser Location - Limits Use the following for planning the placement of the condenser relative to the ice machine Do NOT: • Route a line set that rises, then falls, then Location Limits - condenser location must not exceed ANY of the following limits: • Maximum rise from the ice machine to the rises. • Route a line set that falls, then rises, then falls.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual For The Installer: Remote Condenser Locate the condenser as near as possible to the interior location of the ice machine. Keep condenser at least 2 feet from a wall or other rooftop equipment. Note: The location of the condenser is relative to the ice machine is LIMITED by the specification on the prior page. Roof penetration.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Precharged Line Routing Do not connect the precharged tubing until all routing and forming of the tubing is complete. See the Coupling Instructions for final connections. Caution: Do NOT kink the refrigerant tubing while routing it. 1. Each set of pre-charged tubing lines contains a 3/8” diameter liquid line, and a 1/2” diameter discharge line.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Coupling Instructions The couplings on the ends of the pre-charged line sets are self-sealing when installed properly. Follow these instructions carefully. loose in the refrigeration system. Note: As the couplings are tightened, the diaphragms in the quick connect couplings will begin to be pierced. As that happens, there will be some resistance to tightening the swivel nut.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Final Check List After connections, Control Operation 1. Wash out the bin. If desired, the interior of the bin could be sanitized. Use and Operation 2. Locate the ice scoop (if supplied) and have it available for use when needed. 3. Remote only: Switch on the electrical power. Do not start the machine for 4 hours. Final Check List: 1. Is the unit located indoors in a controlled environment? 2.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Controller Location of Optional Vari-Smart Power Status Water De-scale Sanitize On Off Technician Section Code Description F . . . . . . . . Freeze Mode F flashes . . Freeze Mode is Pending Clean b . . . . . . . . Bin is Full Code C . . . . . . . . Clean Cycle Display L . . . . . . . . Board Locked Control Operation - See Manual d . . . . . . . . Test Mode Water Light On - Restore water supply to O . . . . . . . .
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual AutoAlert and Display Code The controller uses indicator lights to provide the user with information on Power, Status, Water or Time to Clean. These are known as the AutoAlert panel. Code Description F . . . . . . . . Freeze Mode F flashes . . Freeze Mode is Pending b . . . . . . . . Bin is Full C . . . . . . . . Clean Cycle L . . . . . . . . Board Locked d . . . . . . . . Test Mode O . . . . . . . . Off E . . . . .
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Component Indicator Lights The controller has six lights to indicate component operation: Control Button Use Recall diagnostic code: Bin Eyes Blocked • This light is ON when the photo-electric ice sensors have been blocked by ice. • Hold off button in for 3 seconds. Release. • Press and release the Clean button to cycle through each of the last 10 error codes from most recent to oldest.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Electrical Component Details Compressor Water Level Sensor • Operated by the compressor contactor. • Two probe conductivity sensor. When water touches it the Water Present light will be ON. Contactor Auger Motor • Operated by the controller. Line voltage coil. When energized the Compressor indicator light will be ON.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Refrigeration Refrigerant: R-404A Compressors: Copeland or Tecumseh hermetic by model Expansion valve: Non adjustable, internally equalized. Condensers: Air is forced draft type, water cooled is counterflow type. Air filters: Surface mounted to panels. Filter media removable without removing panels. Fan blades: Reduced vibration blades in most air cooled models.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Initial Start Up 1. Turn the water supply on. Change De-Scale Notification Interval 2. Switch the electrical power on. Confirm voltage is correct for the model. 3. Push and release the On button. The machine will start in about two minutes. 4. Soon after starting, air cooled models will begin to blow warm air out the back of the cabinet and water cooled models will drain warm water from the condenser drain tube.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Sequence of Operation The ice machine’s function is to continuously produce ice until the ice level control senses that there is enough ice in the bin or dispenser. There are three systems that operate in close coordination to make ice. They are the electrical system, the water system and the refrigeration system.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Refrigeration System Electrical Sequence The refrigeration system is monitored by the high pressure cut out switch. If the refrigeration discharge pressure exceeds the pre-set point of the switch, it will open, causing the controller to shut the machine off. The discharge pressure control is an automatic reset switch, and after the discharge pressure drops, the controller will restart the unit.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Water System Water enters the machine through the 3/8" male flare at the rear of the cabinet, goes to the water reservoir which it enters through the float valve. The float valve maintains a constant level of water in the reservoir and evaporator, as water flows out the bottom of the reservoir tank to fill the evaporator. Reservoir overflow or evaporator condensation is routed to the drain.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Air Cooled Refrigeration The compressor concentrates the heat from ice making into high pressure, hot discharge gas. The high pressure forces the gas to the water cooled condenser. At the condenser, refrigerant gas flows through a serpentine tube that is connected to fins. Room air is forced by a fan motor through the fins.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Water Cooled Refrigeration The compressor concentrates the heat from ice making into high pressure, hot discharge gas. The high pressure forces the gas to the water cooled condenser. The low pressure zone where the refrigerant evaporates is the evaporator. The evaporator is a vertical metal tube surrounded by a coil of tubing, where the refrigerant flows through.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Remote Air Cooled Refrigeration The compressor concentrates the heat from ice making into high pressure, hot discharge gas. The high pressure forces the gas to the remote condenser. At the remote condenser, the discharge gas will either enter the coils or bypass them through the headmaster. The head master maintains a minimum discharge pressure to keep flash gas out of the liquid line.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual How Ice Is Made Refrigeration effect is applied to the water between the auger and the evaporator. When that water's temperature drops to its freezing point, ice crystals form throughout it. A continually rotating auger moves the ice up the evaporator tube. At this point the ice is a soft ribbon that fills the space between the auger and evaporator.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Technical Information Pressure Switches Cut IN (PSIG) Cut OUT (PSIG) High pressure switch, AC, WC, RC 350 450 Low pressure switch, AC or WC 30 15 Low pressure pump down (remote) 30 15 Compressor Amp Draw Model Voltage Brand Amps N0422, F0522 115 Tecumseh 5.9-6.1 N0622, F0822 115 Tecumseh 5.9-6.1 N0622, F0822 230 Tecumseh N0922, F1222 230 single phase Tecumseh 4.7-5.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Heat Load, Charge and Condenser GPM Heat Load - Average heat load for air conditioning unit sizing Refrigerant Charge Model BTUH Model N0422, F0522A 5000 N0422A, F0522A 14 N0622, F0822A 7100 N0422W, F0522W 11 N0922, F1222A 10500 N0622A, F0822A 14 N01322, F1522A 16000 N0622W, F0822W 11 N0622R, F0822R 192 N0922A, F1222A 18 N0922W, F1222W 20 N0922R, F1222R 192 Water Cooled Water Use - Condens
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Refrigeration System Pressures Refrigeration system pressures of continuous flow ice machines do not vary a great deal while in operation. They will vary by model, condenser type and ambient.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Maintenance This ice machine needs five types of maintenance: • Air cooled and remote models need their air • • • • filters or condenser coils cleaned regularly. All models need scale removed from the water system. All models require regular sanitization. All models require sensor cleaning. All models require a top bearing check.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Maintenance: Scale Removal Note: Following this procedure will reset the de-scale and sanitize light. 1. Remove front panel. 12. Drain the water reservoir and evaporator by disconnecting the leg of the hose connected to the water sensor and draining it into the bin or a bucket. Return the hose to its original position. Discard or melt all ice made during the previous step. 2. Push and release the Off button. 3.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Maintenance: Check Top Bearing This task should only be done by a qualified service technician The bearing in the breaker should be checked at least two times per year. Check the bearing by: 1. Removing the bail clamp and ice chute cover Bail Clamp 3. Removing the water shed & unscrewing the breaker cover (left hand threads). 2. Unscrewing the ice sweep Inspect the top of the bearing.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Service Top Bearing If the grease is uniformly white, and the bearing has no play, no further action is needed. If very gray, rusty, wet or has any embedded metal, have the bearing replaced.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Check Gear Reducer Lubricant Although there is no normal access to the gear reducer lubricant, it can be checked without removal and complete disassembly. The auger drive motor must be removed and the lubricant checked through the input shaft area. Normal Oil Level Because of a shelf under the motor hole, only about 3/16 of oil should be on the tip of the screwdriver blade.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Maintenance: Sensors The control that senses bin full and empty is a photo-electric eye, therefore it must be kept clean so it can “see”. At least twice a year, remove the ice level sensors from the base of the ice chute, and wipe the inside clean, as illustrated. The ice machine senses water by a probe located in the water reservoir.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Service Diagnosis - Air Cooled Symptom Probable Cause Possible Correction No power Check that ice machine has power. If power light is out, check transformer. Code 3: No water Restore water, check filters, water level and sensor Status light is off Push and release ON switch Check for ice flow down chute. if very slow or no ice being made, check for refrig.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Service Diagnosis - Water Cooled Symptom Probable Cause Possible Correction No power If power light is out and there is power to the unit, check transformer. Code 3: No water Restore water, check filters, water level and sensor Status light is off Push and release ON switch Check for ice flow down chute.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Service Diagnosis - Remote Symptom Probable Cause Possible Correction No power If ice machine has power and power light is out, check transformer. Code 3: No water Restore water, check filters, water level and sensor Status light is off Push and release ON switch Check for ice flow down chute.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Service Diagnosis - Remote Symptom Probable Cause Possible Correction Scale build up Remove scale from evaporator and water system High discharge pressure Low ice making capacity Check remote condenser Check headmaster Expansion valve superheat incorrect Check superheat Compressor cycles on and off frequently September 2009 Page 40 Check liquid line valve for leak through May be normal, pump down switch will
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Service Diagnosis - Refrigeration System Failure Symptom Probable Cause Possible Correction Check voltage to coil of contactor, if correct, check coil of contactor Check if Low or High pressure cut outs open, Code 4 in code display Contactor not pulled in Check if remote pump down switch not closed - if open, check low side pressure and liquid line valve Check for control board relay not supplying power to contact
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Service Diagnosis - Optional Ice Level Controls Vari-Smart (KVS) Symptom No ice, bin full light is ON No ice, power light on, bin full light is OFF Probable Cause Possible Correction Adjustment knob set too low Rotate knob to first position, knob's arrow pointing to the left of the L in Lower (on the label) Obstruction beneath sensor Check for and clear any item that might be below the sensor Sensor recessed
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Options Vari-Smart Dispenser applications: Optional adjustable ice level control (KVS) Set the adjustment knob to either the first or second position CW after the maximum fill position. When this option is present there is an adjustment post and an additional indicator light to the right of the four indicator lights mentioned earlier. we Lo r Bin Full Adjust Ice Level 02-4294-01 Rev. A.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Options: Bin Thermostat Another bin control method available on these machines is a bin thermostat. Type: Opens on temperature fall. Connects: To blue wires to controller, in place of the jumper connecting the blue wires between terminals 5 and 6. Use: In certain ice dispenser kits or whenever a permanently lowered ice level is desired and a KVS is not suitable. Mounts: To the control box support post.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Repair Procedures: Bearing And Breaker Note: Removal of the auger, water seal, evaporator Note: Seals must be pressed in with a tool, they will and gear reducer w/ motor must begin at the top of not install by hand. A 2" PVC coupling works well the assembly. as an insertion tool. Seals install open side up. To Remove the Breaker Bearing Assembly: Lip seals must be lubricated with food grade grease prior to assembly.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Repair Procedures: The Auger Turn off the water to the machine, and unclip the evaporator drain hose, pull it down and drain the evaporator into the bin or a container. 1. Remove the the top panel. 2. Remove ice chute cover. 3. Unscrew ice sweep. 4. Remove ice chute body. 5. The auger and breaker/bearing may now be removed as an assembly. • a. Unscrew 4 allen head cap screws holding breaker to evaporator. • b.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Auger and Evaporator Inspection The auger must be carefully inspected for wear and scale. The wear areas are the top bearing surface, drive junction and the edges of the flights. The edges of the auger have horizontal serrations and there are highly machined areas in between. If the auger has contacted the evaporator wall, it will have very rough flight edges and should be replaced.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Repair Procedures: The Water Seal (Assuming all steps to remove the auger have been performed.) 1. The gear reducer/evaporator assembly will have to be exposed. 2. Remove the 4 hex head cap screws holding the evaporator to the gear reducer assembly. Lift the evaporator up and off of the gear reducer. To Replace the Water Seal: 1.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Repair Procedures: Replace the Evaporator: (Assuming all the steps for removal of the thrust bearing, breaker, auger, and water seal have been performed.) 2. Lower the auger into the evaporator barrel, slightly turning it to match up with the drive end. Do Not Drop Into the Evaporator. 3. Complete the reassembly by reversing the disassembly for the breaker & thrust bearing assembly. Electrical Shock Hazard.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Repair Procedures: The gear reducer (Assuming that the procedures through removal of the water seal have been performed.) Electrical Shock Hazard. Disconnect electrical power before beginning. 1. Remove the electrical wires from the gear drive motor. 4. After replacing parts as required, (if any) reassemble the gear case and cover.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522 Air, Water or Remote Service Manual Repair Procedures: Thermostatic Expansion Valve 1. Remove front panel. 2. If the machine was in operation, push and release the off button to shut it down. 3. Disconnect electrical power. Electrical Shock Hazard. Disconnect electrical power before beginning. 4. Recover refrigerant. 5. Remove insulation covering expansion valve and bulb. 6. Remove strap securing bulb to suction line. 7.
