FM2400R 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 FM2400R is a remote condenser modular ice system.
FM2400R FOR THE INSTALLER The FM2400R is designed to fit the following Scotsman storage bins: • B590 and extentions, with bin top KBT18. • BH800 no bin top needed. • BH1000 using bin top KBT14. 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. TOP VIEW Allow 6" of space behind the machine for utility connections. 18.28" Ice Chute 6.7" x 6.
FM2400R FOR THE INSTALLER Installation Limitations: This ice system is designed to be installed indoors, in a controlled environment: Min Max 0 Air Temperature 50 F 1000F (Not including the remote condenser) Water Temperature 400F 1000F 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.
FM2400R REMOTE CONDENSER SPECIFICATIONS 1/2" MALE QUICK CONNECT COUPLING FOR USE WITH RT625 OR RT640 PRECHARGED LINE SET 22" 32.56" 5.38" 5.75" 19.86" 27.81" 3.5" 6.5" 7.5" 1.9" 5.0" LIQUID LINE 3/8" MALE QUICK CONNECT COUPLING FOR USE WITH RT625 OR RT640 PRECHARGED LINE SET MODEL DIMENSIONS H" X W" X D" USE WITH MINIMUM CIRC. AMPACITY+ BASIC ELECTRICAL RC1052 27.8" X 22 X 37.94" 1 FM2400R 2 208-230/60/1 +Included with the icemakers minimum circuit ampacity.
FM2400R FOR THE INSTALLER Location Typical Storage Bin with Extension and Bin Top 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.
FM2400R 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.
FM2400R FOR THE INSTALLER: Precharged Lines 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.
FM2400R FOR THE INSTALLER: Location REMOTE CONDENSER ROOF CUTAWAY CONTACT ROOFING CONTRACTOR EXCESS PRECHARGED TUBING INSIDE BUIDLING ICEMAKER SERVICE ACCESS SIDE AND BACK WALL CUTAWAY December, 1988 Page 8 SERVICE ACCESS
FM2400R 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.
FM2400R 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.
FM2400R 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.
FM2400R 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 REMOTE CONDENSER checked for leaks? SECURED? 4. Has the machine and bin been leveled? 5.
FM2400R 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 12 hours and that the compressor domes are warm. 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).
FM2400R 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.
FM2400R COMPONENT DESCRIPTION: Control Box There are two control boxes in the machine. 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. Also includes the reset switch.
FM2400R ELECTRICAL SEQUENCE Refer the wiring diagram as needed. The two ice making systems operate independently except for the fan motor of the remote condenser. If either one of the systems is operating, the fan will be ON.
FM2400R OPERATION: Water Water enters the machine through the 3/8" male flare at the rear of the cabinet, divides into two inlet lines to each water reservoir which it enters through the float valve. The water them goes out the bottom of the reservoir tanks to the bottom of the evaporators. Reservoir overflow or evaporator condensation is combined into a common drain line and routed to the drain.
FM2400R OPERATION: Refrigeration There are two separate refrigeration systems in this machine. Beginning at the compressor, the refrigerant depending upon the temperature of the 502 is compressed into a high temperature evaporator; warmer evaporators get more gas. The discharge line directs this gas to the refrigerant and colder evaporators get less. At the evaporator, the refrigerant enters an area condenser.
FM2400R OPERATION: Refrigeration There are two separate refrigeration systems in this machine. 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 ththe condenser and the receiver.
FM2400R OPERATION: Refrigeration PUMP DOWN There are two separate refrigeration systems in this machine. During the pump down cycle (usually initiated is stopped by the closed liquid line valve. This by the circuit board de-energizing the liquid action forces the refrigerant into the receiver line valve) the discharge gases flow through and keeps it out of the compressor.
FM2400R MAINTENANCE AND CLEANING The FM2400R is made up of two separate ice makers; to properly clean and maintain the FM2400R, these steps must be followed for both systems. ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// A Scotsman Ice System represents a sizable investment of time and money in any company’s business.
FM2400R MAINTENANCE AND CLEANING The FM2400R is made up of two separate ice makers; to properly clean and maintain the FM2400R, these steps must be followed for both systems. ICE CHUTE /////////////////////////////WARNING/////////////////////////// Disconnect electrical power before beginning. ////////////////////////////////////////////////////////////////////////// ICE LEVEL 1.
FM2400R 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 ann 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. ALLEN SCREWS BREAKER & BEARING & AUGER ASSEMBLY may not be the complete answer.
FM2400R 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 2 reset switches (circuit board and high pressure): depress and release each switch. If the unit still does not start, check the spout switch, or high side pressure. D. Check the high pressure cut out switch, if closed, go to E; if open: 1.
FM2400R SERVICE DIAGNOSIS: Condition - No Ice Being Produced STATUS: NOTHING OPERATES G. 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.
FM2400R SERVICE DIAGNOSIS: Condition - No Ice Being Produced (Work on each system separately) STATUS: GEARMOTOR OPERATES, COMPRESSOR DOES NOT A. Check the pump down control switch. 1. This pressure switch opens at 0-4 psig, and closes at 14-20 psig. If open check the low side pressure, if after running the machine the switch opens at a pressure higher than 5 psig, replace the switch.
FM2400R 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.
FM2400R 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, pry the mounting flanges apart enough to lift one float pivot pin out of the flange hole, and pull float up and out of the reservoir. 4. To remove reservoir, disconnect water inlet compression fitting at reservoir inlet. 5. Remove drain hose from reservoir. 6. Remove evaporator inlet hose from reservoir. 7.
FM2400R REMOVAL AND REPLACEMENT: Bearing And Breaker d. Lift up, and remove breaker/bearing Note: Removal of the auger, water seal, assembly from auger & evaporator. evaporator and gearmotor must begin at the top of the assembly. 6. Service the bearing. Check for rust, rough spots and damage. To Remove the Breaker Bearing Assembly: a.
FM2400R REMOVAL AND REPLACEMENT: Auger ////////////////////////////WARNING////////////////////////////// Disconnect electrical power. Note that the auger has very sharp edges. /////////////////////////////////////////////////////////////////////////// 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.
FM2400R 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 exposed (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. To Replace the Water Seal: 1.
FM2400R REMOVAL AND REPLACEMENT: Evaporator /////////////////////////////WARNING/////////////////////////// Disconnect electrical power, and shut off the water supply before begining. ////////////////////////////////////////////////////////////////////////// To Replace the Evaporator: (Assuming all the steps for removal of the thrust bearing, breaker, auger, and water seal have been performed.) 1. Discharge the refrigerant from the ice maker. 2.
FM2400R REMOVAL AND REPLACEMENT: Gearmotor Assembly WATER SHED SEAL DRIVE MOTOR OUTPUT GEAR, OUTPUT SHAFT, AND BEARINGS BEARING SEAL GASKET Note: There are two gearmotors in each FM2400R.
FM2400R REMOVAL AND REPLACEMENT: Gearmotor Assembly 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. A) Remove the cap screws holding the gearmotor case halves together and pry the two cases apart.
FM2400R CIRCUIT BOARD TESTING ///////////////////////////////////////////////////////////////////////WARNING////////////////////////////////////////////////////////////////// These procedures require the machine to be connected to the power supply. The voltages of the electronic circuit are very low, but HIGHER VOLTAGES ARE PRESENT IN THE UNIT. Do not touch anything but the tester while the unit is being checked out. Make all connections to the circuit board with the ELECTRICAL POWER OFF.
FM2400R CIRCUIT BOARD TESTING 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. If the light does go off, replace the water level sensor.
