FME1500R 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. Table of Contents FOR THE INSTALLER: Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 FOR THE ELECTRICIAN . . . . . . . . . .
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FME1500R FOR THE INSTALLER: Remote Condenser Installation Limitations: This ice system is designed to be installed indoors, in a controlled environment: Min. Max. Air Temperature 500F 1000F Water Temperature 400F 1000F Water Pressure 20 psi 80 psi Voltage 5% +10% (Compared to the nameplate) The temperature limitations do not apply to the remote condenser. It will work between -20 degrees F, and 120 degrees F. Operating the machine outside of the limitations is misuse and can void the warranty.
FME1500R FOR THE INSTALLER LEVEL THE ASSEMBLY Location: After uncrating and inspection, the unit is ready for installation. It is important that the machine be installed in a location where it has enough space around it to be accessible for service, usually a minimum of 6 inches. Try to avoid hot, dirty and crowded locations. Be sure that the location for the machine is within the limitations described on page 3.
FME1500R FOR THE INSTALLER: Remote Condenser Installation 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.
FME1500R FOR THE INSTALLER COUPLING INSTRUCTIONS ////////////////////////////////CAUTION////////////////////////////////// The couplings on the sets of precharged lines are self sealing when installed properly. Carefully follow the instructions: ////////////////////////////////////////////////////////////////////////////////// 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.
FME1500R FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES Water Inlet Drains 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. There is one 3/4" FPT drain at the back of the cabinet, the drain line is of the gravity type, and 1/4 inch per foot fall is an acceptable pitch for the drain tubing.
FME1500R 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.
FME1500R 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.
FME1500R 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? 4. Has the machine and bin been leveled? 5.
FME1500R 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 the styrofoam shipping blocks under the gearmotor, on top of the ice discharge chute, and between the gearmotor and the right side panel have been removed. 5. Check that the electrical power has been on for at least 4 hours. 6. Check that the unit is installed correctly according to the final check list on page 10. 3.
FME1500R COMPONENT DESCRIPTION Control Box: Contains the electrical controls that operate the machine. High Pressure Cut Out (control): 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.
FME1500R COMPONENT DESCRIPTION: Control Box Contactor: A definite purpose contactor connecting the compressor and the remote condenser fan motor to the power supply. Circuit Board: Controlling the ice machine through sensors and relays. The sensors are: ice level, and water level. The relays are for the gear motor (with a built in time delay to clear the evaporator of ice when the unit turns off) and for the liquid line valve. Transformer: Supplies low voltage to the circuit board.
FME1500R ELECTRICAL SEQUENCE: A Model 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.
FME1500R OPERATION Water 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 then goes out the bottom of the reservoir tank to the bottom of the evaporator. Reservoir overflow or evaporator condensation is routed to the drain. Water Level: The correct water level should be checked when the machine is making ice.
FME1500R OPERATION: Beginning at the compressor, the refrigerant is compressed into a high temperature gas. The discharge line directs this gas to the condenser and to the head pressure control At the remote condenser the gas is cooled by air and it then condenses into a liquid. This high pressure liquid then goes through the liquid line to the liquid line connection at the head pressure control. If the head pressure is high enough the liquid refrigerant will go through the valve and enter the receiver.
FME1500R 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.
FME1500R OPERATION: Refrigeration REMOTE CONDENSER LIQUID LINE DISCHARGE LINE LIQUID LINE VALVE (CLOSED) RECEIVER COMPRESSOR 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.
FME1500R MAINTENANCE AND CLEANING 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.
FME1500R ICEMAKER MAINTENANCE: 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. The ice machine senses water level by a probe located in the water reservoir. At least twice a year, the probe should be removed from the reservoir, and the tip wiped clean of mineral build-up.
FME1500R MAINTENANCE: Auger Hazardous Moving Parts. Moving auger can cause personal injury. Disconnect electrical power before beginning. 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.
FME1500R 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.
FME1500R 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 have between 208-230 volts.
FME1500R 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.
FME1500R SERVICE DIAGNOSIS: Condition - No Ice Being Produced STATUS: GEARMOTOR OPERATES, COMPRESSOR DOES NOT B. Check the compressor relay. The relay is on the circuit board, if it does not supply power to the liquid line valve coil, the low pressure control will not close, and the compressor will not run. 1. Check for power at the liquid line valve coil, if none: a. Check for power at the compressor relay at the circuit board.
FME1500R SERVICE DIAGNOSIS: Condition - Low Ice Production I. 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.
FME1500R REMOVAL AND REPLACEMENT WATER RESERVOIR 1. Shut off the water supply to the icemaker. 2. Remove front panel and reservoir cover. 3. Disconnect water inlet compression fitting at reservoir inlet. 4. To remove float push locking tab in and pull float valve up and out of the reservoir tank. Note: there is a plunger inside the valve that is available separately. 5. To remove reservoir, remove drain hose from reservoir. 6. Remove evaporator inlet hose from reservoir. 7. Pull water sensor from reservoir.
FME1500R REMOVAL AND REPLACEMENT: Bearing And Breaker Hazardous Moving Parts. Moving auger can cause personal injury. Disconnect electrical power before beginning. Note: Removal of the auger, water seal, evaporator and gearmotor must begin at the top of the assembly. To Remove the Breaker Bearing Assembly: 1. Remove panels and disconnect electrical power. 2. Move bail clip off of ice chute cover and remove ice chute cover. 3. Unscrew and remove ice sweep. 4.
FME1500R REMOVAL AND REPLACEMENT: Auger Hazardous Moving Parts. Moving auger can cause personal injury. Disconnect electrical power before beginning. To Remove 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. The top panel must be removed. 2. The auger and breaker/bearing may now be removed as an assembly. a. Unscrew 4 allen head cap screws holding breaker to evaporator. b.
FME1500R REMOVAL AND REPLACEMENT: Evaporator & 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.
FME1500R 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. 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.
FME1500R REMOVAL AND REPLACEMENT: Gearmotor Electrical Shock Hazard. Electrical power can cause personal injury. Disconnect electrical power before beginning. 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.
FME1500R 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).
FME1500R REFRIGERATION SERVICE Recover, reclaim or recycle refrigerant. The General Information: method chosen is up to the service company. Any Work on the refrigeration system should only be refrigerant placed into a Scotsman ice machine done when it is certain that the system needs must meet ARI spec 700-88. Reclaim programs repair. are available through most refrigerant wholesalers. • Refrain from checking refrigeration Access Valves: To use the access valves: pressures without reason.
FME1500R ELECTRONIC CONTROL TESTER Electrical shock hazard. Electrical power can cause personal injury. Disconnect electrical power before beginning. INSTRUCTIONS FOR USING TESTER (Optional, order part no. A33942-001) (These instructions assume that the unit will not run, and prior investigation of electric power, controls, and mechanical parts indicates that the electronic circuit may be at fault.) b.
FME1500R ELECTRONIC CONTROL TESTER Water Level 1. Unplug "water sen" connector from control board. 2. Plug "water sen" connector from Scotsman tester into circuit board. a. Move "water" switch on tester to No Water position. The No Water light on the circuit board should go ON. If not, replace the circuit board. b. Move the "water" switch on the tester to the Water position. The No Water light on the board should go OFF. If not replace the circuit board.
