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INTRODUCTION
This manual is intended as a reference for the
installation and service of a Scotsman ice maker
model CMS1002.
This model is a remote condenser cuber, 30" wide
and should be connected to a Scotsman remote
condenser.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Environmental Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
For the Installer
Machine & Bin Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Coupling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Initial Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Service Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Parts lists and wiring diagrams are in the center of this manual, printed on yellow paper.
TABLE OF CONTENTS
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September, 1993
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CMS1002R
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Summary of Contents for Scotsman CMS1002R
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Page 1: Table Of Contents
INTRODUCTION This manual is intended as a reference for the installation and service of a Scotsman ice maker model CMS1002. This model is a remote condenser cuber, 30" wide and should be connected to a Scotsman remote condenser. Specifications ........2 Environmental Limitations . -
Page 2: Specifications
CMS1002RE-3A 30 x 24 x 27 * The total system refrigerant charge is contained within the receiver of the ice machine. This number is for recharging purposes only. If the nameplate has a different value, go by the nameplate. Use Scotsman Remote Condensers RC1022 or RC1222. Use precharged tubing kit RT2225 (25’), RT2240 (40’), or RT2275 (75’). -
Page 3: Environmental Limitations
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 4: For The Installer: Machine & Bin Assembly
4. The remote condenser. Additionally, there will be interconnecting wires between the ice maker and the condenser. The Scotsman remote condenser is powered from the ice maker. The condenser must be located above the ice maker, usually on the roof. -
Page 5: For The Plumber
The drains to be installed must conform with the local plumbing codes. Use only 3/4" rigid tubing. The ice machine’s drain must be separate from the bin’s drain. Both use 3/4" FPT fittings. Insulation of the bin drain is recommended. -
Page 6: Remote Condenser
CMS1002R FOR THE INSTALLER: Remote Condenser Locate the condenser as near as possible to the interior location of the ice maker. Location of the condenser is limited by the specific length of pre-charged refrigerant tubing supplied for the application. The pre-charged tubing connects the icemaker to the remote condenser. -
Page 7: Coupling Instructions
1/4 turn. As the nut turns, the line will show when 1/4 turn is made. 5. After all connections are made, and after the king valve has been opened, check the couplings for leaks. September, 1993 Page 7 CMS1002R USE TWO WRENCHES... -
Page 8: For The Electrician
All external wiring should conform to the national, state and local electrical code requirements. Usually an electrical permit and services of a licensed electrician will be required. REMOTE CONDENSER ELECTRICAL CONNECTION (SCOTSMAN CONDENSER) September, 1993 Page 8 POWER SUPPLY TO REMOTE SCOTSMAN CONDENSER... -
Page 9: Final Check List
12. Has the Field Quality Audit form been properly filled out? Check for correct model and serial numbers from Serial nameplate, then mail the completed form to the SCOTSMAN factory. 13. Has the owner been given the name and telephone number of the authorized SCOTSMAN... -
Page 10: Initial Start Up
CMS1002R INITIAL START UP Remote Condenser: 1. Check that all connections have been made. Ice Maker: 1. Remove front panel by pulling out to unsnap. 2. Remove two screws and the control box cover. 3. Remove the evaporator cover. 4. Remove the left side service panel. - Page 11 3. Hold a flat object about the size of this service manual over the ice level sensor socket. 4. The ice machine should turn off at the end of the harvest cycle. 5. Slowly lower the flat object straight down.
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Page 12: Adjustments
“harvest” cycle, if there is ice in the bin higher than the position the ice level control is set for, the ice machine will turn OFF at the end of the harvest cycle. If no ice in the bin, test again as described under, “To Test The Ice Level Setting”. -
Page 13: Component Description
This temperature sensor is located next to the hot gas valve, on the outlet side. During normal operation, it does not affect the ice machine, but it will shut the machine off if the hot gas line overheats. It is an automatic reset. September, 1993 Page 13 CMS1002R... - Page 14 Ice Level Control This electronic control uses sound waves to measure the distance between the bottom of the ice machine and the top of the ice in the bin. It is designed to control the machines ice production to maintain that distance.
- Page 15 High Pressure Safety Control This is a manual reset control that shuts down the icemaker, should the discharge pressure ever reach 400 PSIG. ELECTRIC WATER VALVE September, 1993 Page 15 CMS1002R WATER DISTRIBUTION SYSTEM EVAPORATOR WATER PUMP RESERVOIR HIGH PRESSURE...
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Page 16: Service Specifications
COMPONENTS gallon per minute during the harvest cycle. 8" from the base of the ice machine. 21" - 22" from the base of the ice machine. 8’ from the base of the ice machine. 275-210 P.S.I.G. 26-23 P.S.I.G. -
Page 17: Cleaning
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. Maintenance and Cleaning should be scheduled at a minimum of twice per year. - Page 18 10. Replace the evaporator cover. Replace the front panel. 11. Move the master switch to ON. SCOTSMAN REMOTE CONDENSER 1. Disconnect electrical power at the icemaker. ///////////////////////////////WARNING/////////////////////////// Disconnect electrical power before beginning. //////////////////////////////////////////////////////////////////////////// 2.
- Page 19 220 PSIG. While this is occuring, the head pressure regulator passes discharge gas into the receiver to keep the refrigerant flowing. September, 1993 Page 19 CMS1002R...
- Page 20 CMS1002R HARVEST CYCLE - HOT GAS BYPASS When the timer switches the icemaker into the harvest cycle, high pressure, high temperature gas refrigerant being discharged from the compressor is diverted from the condenser through the hot gas solenoid valve into each evaporator plate. During this cycle, the refrigerant bypasses the condenser.
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Page 21: Service Diagnosis
1. Too much heat load. 2. Compressor inefficient. 3. Non condensable gasses in refrigeration system. September, 1993 Page 21 CMS1002R PROBABLE CORRECTION 1. Restore power 2. Reset breaker or replace fuse, check for electrical fault. 3. Reset HPC, check fan motor for proper operation, and condenser coil for dirt. - Page 22 CMS1002R SERVICE DIAGNOSIS SYMPTOM Low ice production No ice falling in bin, unit frozen up Ice maker stuck in harvest cycle Ice is mal-formed Water overflows from reservoir into bin. POSSIBLE CAUSE 3. High head pressure, a result of a dirty condenser 4.
- Page 23 SERVICE DIAGNOSIS: Ice Level Control Circuit CONDITION Ice Machine does not run, it has power to it, the high pressure control is closed, the on/off switch is set to ON (the compressor will not operate until the liquid line valve opens, but the pump should be working if there is no ice in the bin).
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Page 24: Removal And Replacement
CMS1002R REMOVAL AND REPLACEMENT TRANSDUCER 1. Disconnect electrical power BEFORE removing transducer. 2. Open bin door and locate the transducer socket. 3. Twist inner portion of transducer counter- clockwise and push up gently. 4. Pull transponder down until plug connection is accessible. - Page 25 6. Remove screws and the cube size control. To replace the cube size control, reverse the removal procedure. Be certain that the bulb is re-insulated. CUBE SIZE CONTROL September, 1993 Page 25 CMS1002R WATER DISTRIBUTOR TUBES INLET WATER VALVE...
- Page 26 CMS1002R REMOVAL AND REPLACEMENT //////////////////////////////WARNING////////////////////////////////// Disconnect electrical power before beginning. ////////////////////////////////////////////////////////////////////////////////// Water Pump 1. Remove front panel. 2. Remove evaporator cover. 3. Unplug water pump electrical connection. ELECTRICAL CONNECTION DISCHARGE HOSE WATER PUMP REMOVAL OF THE WATER PUMP 4. Remove thumb screw retaining pump to cross brace.
- Page 27 Be certain to re-insulate the bulb. 7. Sweat in the new valve. Do not overheat. 8. Weigh the nameplate charge into the receiver. 9. Replace all panels removed for service. 10. Reconnect electrical power. September, 1993 Page 27 CMS1002R...