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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.
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Maintenance & Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Removal and Replacement
Water Reservoir & Bin Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Thrust Bearing & Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Gearmotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Circuit Board Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow
paper.
TABLE OF CONTENTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
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December, 1988
The FM2400R is a remote condenser modular
ice system. It features: front service for the
freezer, gearmotor, control box, water
reservoir, and bin control; an electronic circuit
for monitoring ice and water level; a
thermostatic expansion valve; and R-502 as
the refrigerant.
Page 1
FM2400R
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Table of Contents
Related Manuals for Scotsman FM2400R
Summary of Contents for Scotsman FM2400R
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Page 1: Table Of Contents
Circuit Board Testing ........37 Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow paper. The FM2400R is a remote condenser modular ice system. It features: front service for the freezer, gearmotor, control box, water reservoir, and bin control;... -
Page 2: For The Installer
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... - Page 3 UL, NSF, and CSA. Scotsman assumes no liability or responsibility of any kind for products manufactured by Scotsman that have been altered in any way, 80 PSIG including the use of any part and/or other +10% components not specifically approved by Scotsman.
- Page 4 LIQUID LINE 3/8" MALE QUICK CONNECT COUPLING FOR USE WITH RT625 OR RT640 PRECHARGED LINE SET USE WITH MINIMUM CIRC. AMPACITY+ 1 FM2400R ICEMAKER NAMEPLATE LOCATED ON BACK PANEL SERIAL PLATE LOCATED BEHIND FRONT PANEL December, 1988 Page 4 32.56"...
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Page 5: Location
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. - Page 6 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.
- Page 7 9. After all connections are made, and after the king valve has been opened, check the couplings for leaks. NO SCHRADER VALVE TO ICEMAKER December, 1988 Page 7 FM2400R SERVICE PORTS REMOTE CONDENSER 3/8" LIQUID LINE 1/2" DISCHARGE LINE 3/8" LIQUID LINE 1/2" DISCHARGE...
- Page 8 FM2400R FOR THE INSTALLER: Location REMOTE CONDENSER ROOF CUTAWAY CONTACT ROOFING CONTRACTOR EXCESS PRECHARGED TUBING INSIDE SERVICE BUIDLING ACCESS ICEMAKER SERVICE ACCESS SIDE AND BACK WALL CUTAWAY December, 1988 Page 8...
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Page 9: For The Plumber
FM2400R FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES Water Inlet The recommended water supply is WATER INLET 3/8" MALE cold water. Use 3/8" O.D. copper FLARE tubing, connect to the 3/8" male flare at the back of the cabinet. -
Page 10: For The Electrician
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. - Page 11 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. INSULATED PRECHARGED REFRIGERANT TUBING December, 1988...
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Page 12: Final Check List
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... -
Page 13: Start Up
10. Fill out the manufacturers registration card, and mail it to the Scotsman Factory. 11. Fill out the field quality audit form, and mail it to the Scotsman factory. December, 1988... -
Page 14: Component Description
Water Level Sensor: Senses if there is water in the reservoir to make ice out of. Will shut the machine off it there is none. NOTE: THERE ARE TWO OF EACH OF THE LISTED COMPONENTS IN A FM2400R HEAD PRESSURE CONTROL VALVE COMPRESSOR HIGH PRESSURE... - Page 15 Reset Switch: Manual reset. When the unit shuts off from the ice discharge chute being overfilled (opening the microswitch at the top of the chute) or if the high pressure cut out switch opens. December, 1988 Page 15 FM2400R CONTACTOR RESET SWITCH...
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Page 16: Electrical Sequence
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. If the machine is switched off at the master... -
Page 17: Operation
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. - Page 18 FM2400R OPERATION: Refrigeration There are two separate refrigeration systems in this machine. Beginning at the compressor, the refrigerant 502 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 it then condenses into a liquid.
- Page 19 At that pressure the valve opens up the liquid line from the condenser to the receiver. Refrigeration Schematic DETAIL OF HEAD PRESSURE CONTROL LIQUID LINE VALVE KING VALVE SUCTION RECEIVER COMPRESSOR December, 1988 Page 19 FM2400R REMOTE CONDENSER VALVE THERMOSTATIC EXPANSION VALVE EVAPORATOR LINE...
- Page 20 FM2400R OPERATION: Refrigeration There are two separate refrigeration systems in this machine. 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.
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Page 21: Maintenance & Cleaning
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. -
Page 22: Maintenance And Cleaning
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. /////////////////////////////WARNING/////////////////////////// Disconnect electrical power before beginning. ////////////////////////////////////////////////////////////////////////// 1. The bin control uses devices that sense light, therefore they must be kept clean enough so that they can "see". - Page 23 Clean the auger and evaporator as required. DO NOT HONE THE EVAPORATOR. 7. Replace the water seal. 8. Reverse to reassemble. December, 1988 Page 23 FM2400R...
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Page 24: Service Diagnosis
FM2400R SERVICE DIAGNOSIS: Condition - No Ice Being Produced 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. - Page 25 If the bin empty light is still OFF, check the circuit board. 1. Unplug "opto trans" and "LED" connectors from the circuit board. 2. Plug "opto trans" and "LED" connectors from the Scotsman Electronic Control Testor Model NM1 into the circiut board (see page 38).
- Page 26 FM2400R 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 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.
- Page 27 A unit with a marginal charge in summer, will be undercharged when the outside air temperature drops. The only correct way to charge this unit is to weigh in the nameplate charge. December, 1988 Page 27 FM2400R...
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Page 28: Removal And Replacement: Water Reservoir & Bin Controls
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. -
Page 29: Auger
7. Reverse to reassemble: specific tools and materials are required to install properly. a. Add food grade grease such as Scotsman part number 19-0569-01 to the seal area before installing on the auger. b. Check the seal to shaft areas for cuts, or rough spots: none are permitted. - Page 30 Scrub the auger with ice machine cleaner and hot water. ///////////////////////////WARNING////////////////////////////// Ice machine cleaner is an acid. Handle it with extreme care, keep out of reach of children. ////////////////////////////////////////////////////////////////////////// b. The water seal area. Because the auger has been removed, the water seal will have to be replaced.
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Page 31: Water Seal
4. Place a small bead of food grade silastic sealant (such as 732 RTV or Scotsman part number 19-0529-01) on the area of the auger where the water seal is to be mounted. -
Page 32: Evaporator
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. - Page 33 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. /////////////////////////////WARNING///////////////////////////// Disconnect Electrical Power Before Begining /////////////////////////////////////////////////////////////////////////// GEARCASE December, 1988 Page 33...
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Page 34: Gearmotor
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. -
Page 35: Circuit Board Testing
If the Bin Empty light does not come ON, the circuit board should be replaced. PHOTO TRANS LIGHT GOES ON SWITCH TO “BIN EMPTY” December, 1988 Page 35 FM2400R LIGHT GOES ON LIGHT OFF... - Page 36 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.