FME800R INTRODUCTION To the owner or user: The service manual you are reading is intended to provide you, and the maintenance or service technician, with the information needed to install, start up, clean, maintain, and service this ice system. The FME800R is a remote condenser modular ice system that fits a variety of Scotsman storage bins.
FME800R FOR THE INSTALLER These machines are designed to fit the following Scotsman storage bins: • BH550 using bin top KBT14 or KBT20 • B90 with bin top KBT18. • BH800 using bin top KBT15 (one unit). • BH800 if using two units, no bin top needed. • BH900 using bin top KBT24 When installing a new system, check to be sure that you have everything you need before beginning: • Correct Bin • Correct Ice Machine • Correct Bin Top • All kits, legs, and information required for the specific job.
FME800R FOR THE INSTALLER Installation Limitations: This ice system is designed to be installed indoors, in a controlled environment: Min. Max. 0 1000F Air Temperature 50 F (Not including the remote condenser) 1000F Water Temperature 400F Water Pressure 20 PSIG 80 PSIG Voltage -5% +10% (Compared to the nameplate) Operating the machine outside of the limitations is misuse and can void the warranty. Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance.
FME800R REMOTE CONDENSER SPECIFICATIONS ERC DIMENSIONS Model A ERC101 33 3⁄8" 23 B 10 3⁄4" F 16 3⁄4" 13⁄ " 16 19 7⁄8" Model RCE501-1 ERC101-1 Use with 1 FME800R SAME Basic Electrical 115/60/1 115/60/1 RTE25 Precharged line set, 25’, R-404A RTE40.
FME800R FOR THE INSTALLER: Remote Condenser Location Limited to a 40 foot or a 25 foot length of precharged refrigerant tubing connecting the icemaker to the remote condenser. The condenser must be above or level with the icemaker. Select the best available location, protecting the condenser from extremes of dirt, dust, and sun. Meet all applicable building codes. Usually the services of a licensed electrician are required. Roof Attachment 1.
FME800R FOR THE INSTALLER: Coupling Instructions ////////////////////////////////CAUTION//////////////////////////////// The couplings on the sets of precharged lines are self sealing when installed properly. Carefully follow the instructions: //////////////////////////////////////////////////////////////////////////////// Initial Connections 1. Remove the protector caps and plugs. Wipe the seats and threaded surfaces with a clean cloth to be certain that no foreign matter remains on them. 2.
FME800R FOR THE INSTALLER: Location TYPICAL INSTALLATION REMOTE CONDENSER ROOF CUTAWAY EXCESS PRECHARGED TUBING INSIDE BUILDING ICEMAKER SERVICE ACCESS SIDE AND BACK WALL CUTAWAY August 1993 Page 7 SERVICE ACCESS
FME800R FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES Water Inlet The recommended water supply is cold water. Use 3/8" O.D. copper tubing, connect to the 3/8" male flare at the back of the cabinet. Install a hand valve near the machine to control the water supply.
FME800R FOR THE ELECTRICIAN CONFORM TO ALL APPLICABLE CODES The electrical power to the unit is supplied through the junction box at the rear of the machine. Check the nameplate (located on the back panel) for the voltage requirements, and for the minimum circuit ampacity. The machine requires a solid chassis to earth ground wire. The ice maker should be connected to its own electrical circuit so it would be individually fused.
FME800R FOR THE INSTALLER: Completed Installation A typical installation should generally appear as illustrated below. The remote condenser must be located above the icemaker and the precharged lines installed per the instructions on page 6.
FME800R FOR THE INSTALLER: Final Check List 1. Is the ice system installed indoors in a location where the air and water temperatures are controlled, and where they do not exceed the design limitations? 2. Is there an electrical service disconnect within sight of the installed machine? Has the voltage been checked, and compared to nameplate requirements? 3. Have all the plumbing connections been made and checked for leaks? REMOTE 4. Has the machine and bin been CONDENSER leveled? SECURED? 5.
FME800R START UP Pre-Start Inspection 1. Remove the front, left, and right side service panels. 4. Check that the refrigerant lines are properly installed. 2. Check that any styrofoam shipping blocks have been removed. 5. Check that the electrical power has been on for at least 4 hours. 3. Inspect the interior of the machine for loose screws or wires. Check that no refrigerant lines are rubbing each other. Check that the fan blade turns freely (remote condenser). 6.
FME800R COMPONENT DESCRIPTION Control Box: Contains the electrical controls that operate the machine. High Pressure Cut Out: A manual reset switch sensing the high side refrigeration pressure. It is set to shut the machine off at 450 psig. Evaporator: A vertical stainless steel tube, refrigerated, and water filled. In it, there is a stainless steel auger. Reservoir: Float operated, it maintains the water level in the evaporator at a constant level, it also contains the water level sensor.
FME800R COMPONENT DESCRIPTION: Control Box Contactor: A definite purpose contactor connecting the compressor and the remote condenser fan motor to the power supply. Circuit Board: The circuit board receives input signals from several sensors and tranlsates them to control the electrical power to the various loads.
FME800R ELECTRICAL SEQUENCE Refer the wiring diagram as needed. If the machine is switched off at the master switch, but is otherwise ready to go, switching the master switch to ON does the following: • The bin empty light on the circuit board goes on • There is a 15 second delay • If there is enough water in the reservoir, the circuit board will allow the machine to start up.
FME800R OPERATION: Water Reservoir overflow or evaporator condensation is routed to the drain. 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 water them goes out the bottom of the reservoir tank to the bottom of the evaporator. Water Level: The correct water level should be checked when the machine is making ice.
FME800R OPERATION: Refrigeration Beginning at the compressor, the refrigerant is compressed into a high temperature gas. The discharge line directs this gas to the condenser. At the remote condenser the gas is cooled by air and condenses into a liquid. This high pressure liquid then goes through the liquid line to the head pressure control valve, into the receiver, through the liquid line valve and then through the expansion valve.
FME800R OPERATION: Refrigeration Low Condensing Temperature The refrigeration system under low condenser air temperatures is much the same as it is under higher temperatures, with the exception that the resulting low head pressures cause the head pressure control to close off the liquid line between the condenser and the receiver.
FME800R OPERATION: Refrigeration PUMP DOWN During the pump down cycle (usually initiated by the circuit board de-energizing the liquid line valve) the discharge gases flow through their normal path to the remote condenser, through the head pressure control, and into the receiver. At this point the refrigerant flow is stopped by the closed liquid line valve. This action forces the refrigerant into the receiver and keeps it out of the compressor.
FME800R CLEANING & SANITIZING A Scotsman Ice System represents a sizable investment of time and money in any company’s business. In order to receive the best return for that investment, it MUST receive periodic maintenance. It is the USER’S RESPONSIBILITY to see that the unit is properly maintained. It is always preferable, and less costly in the long run, to avoid possible down time by keeping it clean; adjusting it as needed; and by replacing worn parts before they can cause failure.
FME800R MAINTENANCE AND CLEANING ICE CHUTE Electrical Shock Hazard. Electrical shock can cause personal injury. Disconnect electrical power before beginning. ICE LEVEL SENSORS SLIDE LEFT TO REMOVE 1. The bin control uses devices that sense light, therefore they must be kept clean enough so that they can “see”. At least twice a year, remove the bin control sensors from the base of the ice chute, and wipe the inside clean, as illustrated. 2.
FME800R MAINTENANCE AND CLEANING In some areas the water supply to the icemaker will have a great deal of minerals in it, and that will result in an evaporator and auger becoming coated with these minerals, requiring a more frequent removal than twice per year. If in doubt about the condition of the evaporator and auger, the auger can be removed so the parts can be inspected. Note: Water filters can filter out suspended solids, but not dissolved solids. “Soft” water may not be the complete answer.
FME800R OPERATING CHARACTERISTICS Typical Low Side Pressure • 28 - 32 PSIG Typical Discharge Side Pressure • 240 PSIG, will vary bewteen 180 and 380 depending upon air and water temperatures Refrigerant Charge • 208 ounces of R-404A Typical Compressor Amp Draw •8-9 Typical Gearmotor Amp Draw • 3.5 to 3.8 High Pressure Cut Out • 450 PSIG Pump Down Pressure Switch - after May 1995 production.
FME800R SERVICE DIAGNOSIS: Condition - No Ice Being Produced STATUS: NOTHING OPERATES A. Check: Voltage to the unit, restore it if there is none. Compare to the nameplate. B. Check: The master switch, switch ON if off. C. Check: The reset switch (high pressure): depress and release the switch. If the unit still does not start, check the high side pressure. D. Check the high pressure cut out switch. 1. This pressure switch opens at 450 psig.
FME800R SERVICE DIAGNOSIS: Condition - No Ice Being Produced STATUS: NOTHING OPERATES F. Check: The gear motor, if it will not run, the compressor will not run. If no power to it: Check: the indicator lights on the circuit board, the bin empty light should be ON, the no water light should be OFF . 1. If the bin empty and no water lights are off, check the transformer. a. Transformer "load" side should have 12 to 15 volts. If not, check the "line" side. The line side should be line voltage.
FME800R SERVICE DIAGNOSIS: Condition - No Ice Being Produced STATUS: GEARMOTOR OPERATES, COMPRESSOR DOES NOT A. Check the pump down control switch. 1. This pressure switch opens at 15 psig, and closes at 30 psig. If open check the low side pressure, if after running the machine the switch opens at a pressure higher than 18 psig, replace the switch.
FME800R SERVICE DIAGNOSIS: Condition - Low Ice Production STATUS: EVERYTHING IS OPERATING A. Check the condenser for dirt. Clean as required. Check the head pressure. If the head pressure is very high: 1. Check for high air temperatures, or restrictive air flow. Correct as needed. 2. The refrigerant may contain non condensable gases, purge, evacuate, and recharge per nameplate. 3. Check the interconnecting refrigerant tubing for kinks or twists.
FME800R REMOVAL AND REPLACEMENT: Water Reservoir & Bin Controls WATER RESERVOIR 1. Shut off the water supply to the icemaker. 2. Remove front panel and reservoir cover. 3. To remove float only, disconnect water inlet compression fitting at reservoir inlet, push in on locking tab, pull float up and out of the reservoir. Note: there is a separate plunger/seat inside the valve assembly that may be replaced. 4. To remove reservoir, disconnect water outlet at reservoir base. 5. Remove drain hose from reservoir.
FME800R REMOVAL AND REPLACEMENT: Bearing And Breaker Note: Removal of the auger, water seal, evaporator and gearmotor must begin at the top of the assembly. To Remove the Breaker Bearing Assembly: Electrical Shock Hazard. Electrical shock can cause personal injury. Disconnect electrical power before beginning. 1. Remove panels and disconnect electrical power. 2. Push bail clamp back and remove ice chute cover. 3. Unscrew and remove ice sweep. 4.
FME800R REMOVAL AND REPLACEMENT: Auger Inspect the auger, the critical areas of the auger To Remove the Auger: are: Turn off the water to the machine, and unclip the a. The auger body. It should be clean and evaporator drain hose, pull it down and drain the shining. Sometimes an auger will appear clean evaporator into the bin or a container. when wet, but after it is dry it will be seen to be 1. The top panel must be removed, or, if that is not stained.
FME800R REMOVAL AND REPLACEMENT: Water Seal To Remove the Water Seal: (Assuming all steps to remove the auger have been performed.) 1. The gearmotor/evaporator assembly will have to be pulled away from the machine (if not yet done). 2. Remove the 4 hex head cap screws holding the evaporator to the gearmotor assembly. Lift the evaporator up and off of the gearmotor. 3. Remove the snap ring or wire retainer from the grove under the water seal. 4. Pull or drive out the lower half of the water seal.
FME800R REMOVAL AND REPLACEMENT: Evaporator To Replace the Evaporator: (Assuming all the steps for removal of the thrust bearing, breaker, auger, and water seal have been performed.) 1. Discharge and recover the refrigerant from the ice maker. 2. Unsweat the refrigerant connections: a) At the thermostatic expansion valve outlet. //////////////////////////////CAUTION/////////////////////////// Heat sink the TXV body when unsweating or resweating the adjacent tubing.
FME800R REMOVAL AND REPLACEMENT: Gearmotor Assembly WATER SHED DRIVE MOTOR OUTPUT GEAR, OUTPUT SHAFT, AND BEARINGS BEARING SEAL GASKET GEARCASE To Remove and Repair the Gearmotor Assembly: (Assuming that the procedures through removal of the water seal have been performed.) 1. Remove the electrical wires from the gear drive motor. 2. Unscrew the 4 cap screws holding the gearmotor to the gearmotor plate. 3. Remove the gearmotor from the icemaker. To Inspect the Gearmotor.
FME800R REFRIGERATION SERVICE General Information: • When brazing the tubing connections to Work on the refrigeration system should only be components such as the TXV, the component done when it is certain that the system needs must be protected by heat sink material. repair. Recover, reclaim or recycle refrigerant. The method chosen is up to the service company. Any • Refrain from checking refrigeration refrigerant placed into a Scotsman ice machine pressures without reason.
FME800R REFRIGERATION SERVICE: R-404A THIS ICE MACHINE USES R-404A (HP62) REFRIGERANT AND POLYOLESTER COMPRESSOR OIL. DO NOT USE MINERAL OIL IN THIS REFRIGERATION SYSTEM. • HP62 is a "Near Azeotrope", and therefore liquid charging is preferred. • When the system is serviced, a special liquid line dryer is required. • Polyolester oil absorbs water very easily, and therefore when the system is opened for service, it must be re-sealed as soon as possible (15 minutes maximum).
FME800R CIRCUIT BOARD TESTING: A Model Only Electrical Shock Hazard. Electrical shock can cause personal injury. Disconnect electrical power before connecting tester. INSTRUCTIONS FOR USING TESTER (Optional, order part no. A33942-001) (These instructions assume that the unit will not 1. Unplug “ photo trans” and “LED” connectors from the circuit board. 2. Plug “photo trans” and “LED” connectors from the tester into the circuit board. 3. Unplug “water sen” connector from control board. 4.
