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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
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December, 1988
The FM800R is a remote condenser modular
ice system that fits a variety of Scotsman
storage bins. 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
FM800R
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Summary of Contents for Scotsman FM800R
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Page 1: Table Of Contents
Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow paper. The FM800R is a remote condenser modular ice system that fits a variety of Scotsman storage bins. It features: front service for the freezer, gearmotor, control box, water reservoir, and bin control;... -
Page 2: For The Installer
FM800R FOR THE INSTALLER The FM800R is designed to fit the following Scotsman storage bins: B590 and extentions, with bin top KBT18. BH800 using bin top KBT15 (one unit). BH800 if using two units, no bin top needed. BH1000 using bin top KBT16. - 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, including the use of any part and/or other 80 PSIG components not specifically approved by +10% Scotsman.
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Page 4: Remote Condenser Specifications
PRECHARGED LINE SET USE WITH MINIMUM CIRC. AMPACITY+ 1 FM800R-32 1 or 2 FM800R’S (-32) 1 FM800R-1 +Included with the icemakers minimum circuit ampacity. Use this value to determine wire size between icemaker and ICEMAKER NAMEPLATE LOCATED ON BACK PANEL... -
Page 5: Location
FM800R 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: Remote Condenser
FM800R 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 "discharge line". 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 FM800R SERVICE PORTS REMOTE CONDENSER 3/8" LIQUID LINE 1/2" DISCHARGE LINE...
- Page 8 FM800R FOR THE INSTALLER: Location TWO UNITS ON ONE CONDENSER REMOTE CONDENSER ROOF CUTAWAY EXCESS PRECHARGED SERVICE TUBING INSIDE ACCESS ICEMAKERS BUIDLING SERVICE ACCESS SIDE AND BACK WALL CUTAWAY December, 1988 Page 8...
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Page 9: For The Plumber
FM800R 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
FM800R 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 Do all wiring with the electrical power disconnected. ///////////////////////////////////////////////////////////////////////// To install the KCMR230 fan relay kit when using (2) FM800R icemakers and one 230 volt, two circuit remote condenser. Do not use with FM800RE-1A (115v) See the remote condenser nameplate for current requirements to determine wire size to be used for electrical hookup.
- Page 12 FM800R FOR THE ELECTRICIAN: Fan Relay Kit Phasing (Do After Start Up) Only for 230 volt icemakers and 230 volt condenser. 6. Check phasing of the electrical circuit as follows: A. The phasing of the wiring MUST now be checked, as incorrect phasing will result in a failure of the kit relay.
- Page 13 ROOF CUT-AWAY 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. December, 1988 Page 13 FM800R INSULATED PRECHARGED REFRIGERANT TUBING...
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Page 14: Final Check List
FM800R 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 15: 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 16: Component Description
Ice Level Sensor: An electronic "eye", it senses the presence of ice in the bottom of the ice discharge chute. Operates to turn the ice machine on and off automatically as the level of ice in the bin changes. Gear Motor: An oil filled, speed reduction gearbox, driving the auger. - Page 17 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 17 FM800R CONTACTOR RESET SWITCH...
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Page 18: Electrical Sequence
FM800R 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... -
Page 19: Operation
FM800R 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 them goes out the bottom of the reservoir tank to the bottom of the evaporator. - Page 20 FM800R OPERATION: Refrigeration 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 21 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 21 FM800R REMOTE CONDENSER VALVE THERMOSTATIC EXPANSION VALVE EVAPORATOR LINE...
- Page 22 FM800R OPERATION: Refrigeration 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...
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Page 23: Maintenance & Cleaning
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;... -
Page 24: Maintenance And Cleaning
“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 SLIDE UP TO REMOVE WATER LEVEL... - Page 25 Clean the auger and evaporator as required. DO NOT HONE THE EVAPORATOR. 7. Replace the water seal. 8. Reverse to reassemble. December, 1988 Page 25 FM800R...
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Page 26: Service Diagnosis
FM800R 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 27 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 35).
- Page 28 FM800R 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 6-10 psig, and closes at 16-20 psig. If open check the low side pressure, if after running the machine the switch opens at a pressure higher than 10 psig, replace the switch.
- Page 29 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 29 FM800R...
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Page 30: Removal And Replacement: Water Reservoir & Bin Controls
FM800R 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 31: 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 32 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 the reach of children. ////////////////////////////////////////////////////////////////////////// b.
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Page 33: 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 34: Evaporator
FM800R REMOVAL AND REPLACEMENT: Evaporator 1. Discharge 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. ////////////////////////////////////////////////////////////////////////// b) At the suction line at the joint about 3" from the evaporator. - Page 35 REMOVAL AND REPLACEMENT: Gearmotor Assembly SEAL OUTPUT GEAR, OUTPUT SHAFT, AND BEARINGS WATER SHED GASKET ///////////////////////////WARNING///////////////////////// Disconnect Electrical Power Before Begining ///////////////////////////////////////////////////////////////////// GEARCASE December, 1988 Page 35 FM800R DRIVE MOTOR BEARING SEAL...
- Page 36 FM800R REMOVAL AND REPLACEMENT: Gearmotor Assembly 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.
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Page 37: 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 37 FM800R LIGHT GOES ON LIGHT OFF... - Page 38 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...