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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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Maintenance & Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Removal and Replacement
Water Reservoir & Bin Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Thrust Bearing & Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Gearmotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Circuit Board Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow
paper.
TABLE OF CONTENTS
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November 1992
The FM1202R 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-22 as the
refrigerant.
Page 1
FM1202R
This Manual Was Printed On
Recycled Paper
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Table of Contents
Related Manuals for Scotsman FM1202R
Summary of Contents for Scotsman FM1202R
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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 FM1202R 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
FM1202R FOR THE INSTALLER The FM1202R is designed to fit the following Scotsman storage bins: B90 and extensions, 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 (one unit) -
Page 3: Remote Condenser Specifications
PRECHARGED LINE SET USE WITH MINIMUM CIRC. AMPACITY+ 1 FM1202R 1 or 2 FM1202R’S +Included with the ice makers minimum circuit ampacity. Use this value to determine wire size between ice maker and ICEMAKER NAMEPLATE LOCATED ON BACK PANEL SERIAL PLATE LOCATED... -
Page 4: Location
They meet or exceed the standards of 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 components not specifically approved by Scotsman. -
Page 5: Remote Condenser
Tubing illustration shows tight spiral; a spiral in the field depends on tubing limitations. Tight spiral not required. Traps in tubing not required, they are included as part of the Scotsman condenser and ice machine. LOCATE REMOTE CONDENSER ABOVE ICEMAKER... - Page 6 FM1202R 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: ////////////////////////////////////////////////////////////////////////// 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.
- Page 7 FM1202R FOR THE INSTALLER: Location TWO UNITS ON ONE CONDENSER REMOTE CONDENSER ROOF CUTAWAY EXCESS PRECHARGED SERVICE TUBING INSIDE ACCESS ICE MAKERS BUILDING SERVICE ACCESS SIDE AND BACK WALL CUTAWAY November 1992 Page 7...
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Page 8: For The Plumber
FM1202R FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES WATER INLET 3/8" MALE FLARE FIELD SUPPLIED WATER FILTER HAND SHUT OFF VALVE CONNECT TO COLD WATER VENT BIN DRAIN 3/4" FPT FLOOR DRAIN The recommended water supply is cold water. Use 3/8" O.D. copper tubing, connect to the 3/8"... -
Page 9: For The Electrician
All external wiring must conform to national, state, and local electrical codes. The use of a licensed electrician is required to perform ICEMAKER the electrical installation. POWER SUPPLY November 1992 Page 9 FM1202R RAIN PROOF CONDUIT... - Page 10 Do all wiring with the electrical power disconnected. ///////////////////////////////////////////////////////////////////////// To install the KCMR230 fan relay kit when using (2) FM1202R ice makers and one 230 volt, two circuit remote condenser. See the remote condenser nameplate for current requirements to determine wire size to be used for electrical hookup.
- Page 11 #1 must be reversed (put the wire that was on 1 on 2 and the wire that was on 2 on 1). ///////////////////////////WARNING///////////////////////////// Do all wiring with the electrical power disconnected. //////////////////////////////////////////////////////////////////////// November 1992 Page 11 FM1202R...
- Page 12 FM1202R FOR THE INSTALLER: Completed Installation ROOF CUT-AWAY A typical installation should generally appear as illustrated below. The remote condenser must be located above the ice maker and the precharged lines installed per the instructions on page 6. November 1992...
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Page 13: Final Check List
14. Verify that the master switch is in the OFF position. REMOTE CONDENSER SECURED? LEVELED? PLUMBING? 15. Switch on the electrical power. 16. Refer to Pre-Start instructions, the next page. November 1992 Page 13 FM1202R ROOF HOLES SEALED? POWER SUPPLY? -
Page 14: Start Up
9 Give the owner/user the service manual, instruct him/her in the operation of the unit, and make sure they know who to call for service. 10. Fill out the manufacturers registration card, and mail it to the Scotsman Factory. November 1992 Page 14... -
Page 15: 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. - Page 16 FM1202R 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...
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Page 17: Electrical Sequence
The spout switch will stop the machine immediately if it opens. It is a manual reset. The master switch is the manual control for the complete machine, but it is not a service disconnect. November 1992 Page 17 FM1202R... -
Page 18: Operation
FM1202R OPERATION: Water WATER RESERVOIR RESERVOIR WATER INLET 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. - Page 19 Refrigeration Schematic DETAIL OF HEAD PRESSURE CONTROL LIQUID LINE VALVE KING VALVE SUCTION LINE RECEIVER COMPRESSOR November 1992 Page 19 FM1202R REMOTE CONDENSER VALVE THERMOSTATIC EXPANSION VALVE EVAPORATOR...
- Page 20 FM1202R OPERATION: Refrigeration 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.
- Page 21 The pump down continues until the low pressure control turns the compressor off. Refrigeration Schematic LIQUID LINE VALVE KING VALVE SUCTION RECEIVER COMPRESSOR November 1992 Page 21 FM1202R REMOTE CONDENSER THERMOSTATIC EXPANSION VALVE EVAPORATOR LINE...
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Page 22: Maintenance & Cleaning
FM1202R 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 23: Maintenance And Cleaning
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. - Page 24 FM1202R MAINTENANCE AND CLEANING In some areas the water supply to the ice maker 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.
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Page 25: Service Diagnosis
Check the water level, restore/adjust if low. b. Check the water level sensor, clean if dirty, (see maintenance). c. Check the circuit board, see next page. If the machine does not start, see the next page. STATUS: NOTHING OPERATES November 1992 Page 25 FM1202R... - Page 26 . 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 Tester Model NM1 into the circuit board (see page 36).
- Page 27 Check the connections on the circuit board. The liquid line (or compressor) relay on the circuit board may have failed. If so, replace the circuit board. If there is power to the valve, the coil may be open, or the valve jammed, replace the valve. November 1992 Page 27 FM1202R...
- Page 28 FM1202R 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.
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Page 29: Removal And Replacement: Water Reservoir & Bin Controls
6. Reverse to reassemble, be certain that the bin controls are aligned so that the ice level sensors are visible (centered) through the holes in the ice chute. November 1992 Page 29 FM1202R FLOAT ASSEMBLY... -
Page 30: Thrust Bearing & Breaker
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 31: Auger
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. The water seal area. Because the auger has been removed, the water seal will have to be replaced. -
Page 32: 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 33: Refrigeration System
There are various mechanical devices that may be used to recycle refrigerant at the field level, however, Scotsman requires that any refrigerant placed into a Scotsman ice machine meet ARI spec 700-88. Reclaim programs are available thru most refrigerant wholesalers. -
Page 34: Evaporator
FM1202R REMOVAL AND REPLACEMENT: Evaporator Charging Procedures Extra care must be taken when recharging this remote system. No liquid refrigerant may be placed in the system at the compressor. To Replace the Evaporator: (Assuming all the steps for removal of the thrust bearing, breaker, auger, and water seal have been performed.) -
Page 35: Gearmotor
All liquid refrigerant must be weighed into the receiver through the “front seated” king valve". FRONT SEATED KING VALVE SERVICE PORT November 1992 Page 35 FM1202R CHARGING CYLINDER... -
Page 36: Circuit Board Testing
FM1202R CIRCUIT BOARD TESTING INSTRUCTIONS FOR USING TESTER MODEL FC1 (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.) ///////////////////////////////////////////////////////////////////////WARNING///////////////////////////////////////////////////////////////////// These procedures require the machine to be connected to the power supply. - Page 37 CIRCUIT BOARD TESTING Water Level 1. Unplug “water sen” connector from control board. 2. Plug “water sen” connector from Scotsman tester into circuit board. WATER SENS SWITCH TO “NO WATER” a. Move “water” switch on tester to No Water position. The No Water light on the circuit board should go ON.