Scotsman CMS1202 Operator’s Manual

CMS1202

INTRODUCTION

To the owner or user: This service manual 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.

Table of Contents

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Location & Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

For the Electrician . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Initial Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Freeze Cycle Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Harvest Cycle Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow paper.

September 1993

Page 1

Air Cooled

CMS1202

FOR THE INSTALLER

The CMS1202 will fit Scotsman’s ice storage bin (48" wide) model BH900, and with adaptors, the following Scotsman ice storage bins:

••BH1000 (use KBT21)

••BH1360.

When stacking onto another CMS1202 or a CMS1402, use kit KSCMS48.

The normal finish for the machine is enamel sandalwood. An optional stainless steel panel kit (SPKCMS1402) can be field installed. It contains a stainless steel top, left side panel, an overlay right side panel, and front panel.

Water Cooled

Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance. They meet or exceed the standards of U.L., N.S.F., and C.S.A.

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 parts and/or other components not specifically approved by Scotsman.

Scotsman reserves the right to make design changes and/or improvements at any time. Specifications and designs are subject to change without notice.

This manual covers A and B models.

Model Number Dimensions (w/o bin)

W" x D" x H"

CMS1202AE-3B CMS1202WE-3B CMS1202AE-32B CMS1202WE-32B

48 x 24 48 x 24 48 x 24 48 x 24

⁄8 x 271⁄

⁄8 x 271⁄2

Basic Electrical

208-230/60/3 14.8 20 60 oz. R-22 Air

208-230/60/3 14.1 20 64 oz. R-22 Water

208-230/60/1 20.8 30 60 oz. R-22 Air 208-230/60/1 20.1 30 64 oz. R-22 Water

Minimum Circuit Ampacity*

Maximum Fuse Size

Refrigerant Charge

Condenser Type

* Minimum Circuit Ampacity is used to determine wire size and type per the National Electric Code. If the nameplate has different numbers from the above, go by the nameplate.

This ice system is designed to be installed indoors, in a controlled environment.

MINIMUM MAXIMUM Air Temperature 50 Water Temperature 40 Water Pressure 20 psi 80 psi

F. 1000F.

September 1993

Page 2

FOR THE INSTALLER: Location & Assembly

SHIPPING

BRACKETS

Location:

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. A minimum of 6" must be allowed at the back for air circulation on air cooled models. Try to avoid hot, dirty and crowded locations. Be sure that the location for the machine is within the envrionmental limitations.

Storage Bin:

Tip the storage bin on its back, using parts of the carton to protect the exterior finish. Install the legs, use a heavy duty leg kit if stacking two ice machines on one bin.

1. Arrange for proper electric, water and drain. See instructions for the plumber and for the

electrician.

2. After mounting the legs, position the ice storage bin in the selected location:

CMS1202

ICE MACHINE AND BIN ASSEMBLY

Note: Allow enough space to the left and back to service the machine. Do NOT push the bin into postion, instead, lift it there. Pushing a bin may damage the legs and leg mounts.

Level the bin in both the front to rear and side to side directions by adjusting the leg levelers. Select a well ventilated location for air cooled models.

Note: Air cooled models blow air from front to back.

3. Inspect the bin top mounting gasket which should be flat, with no wrinkles, to provide a good water seal when the cuber is installed on top of the bin.

Ice Maker:

Install the modular cuber on top of the bin using care to be sure a good seal is made between the two cabinets. Use of a mechancial lift is recommended. Align the holes in the bottom rear of the cabinet to mate with the two mounting holes on the top rear of the bin.

Use bolts and straps found on the back of the icemaker to secure the ice machine to the bin. When alignment and leveling are completed, tighten the bolts to secure the mounting straps.

Remove the front panel, and remove the evaporator shipping brackets and hardware.

September 1993

Page 3

CMS1202

FOR THE INSTALLER: Location & Assembly

Stacking Instructions

When stacking two units, remove the top panel and the evaporator cover from the lower icemaker. (The top removed from the lower icemaker will no longer have any function.)

Carefully lift the uncrated top unit onto the bottom one and align the two cabinets. Use of a mechanical lift is recommended for this step.

STACKING

At the back of the two icemakers, bolt the upper icemaker cabinet to the lower icemaker cabinet using the mounting straps and bolts from the hardware package.

A stacking kit is required to interconnect the CMS ice level controls.

A different stacking kit is required to stack a CMS machine onto a CM model.

OPTIONAL TRIM STRIP

September 1993

Page 4

EVAPORATOR COVER

FOR THE ELECTRICIAN

ELECTRICAL CONNECTIONS, AIR COOLED

DETAIL OF

JUNCTION BOX

CMS1202

SEE NAMEPLATE for current requirements to determine wire size to be used for electrical hookup. The cuber requires a solid chassis to chassis earth ground wire. See Wiring Diagram. Be certain the cuber is connected to its own electrical circuit and individually fused. Voltage variation should not exceed ten percent of the nameplate rating, even under starting conditions. Low voltages can cause erratic operation and may be responsible for serious damage to the icemaker.

Electrical connections are made at the rear of the icemaker, inside the junction box.

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.

GROUND SCREW

HAND

DISCONNECT

SWITCH

JUNCTION

BOX

ELECTRICAL CONNECTIONS, WATER COOLED

September 1993

Page 5

VENT

OPTIONAL

FILTER

CONDENSER

INLET

CMS1202

FOR THE PLUMBER

FOLLOW ALL LOCAL CODES:

The recommended water supply line is a 3/8-inch O.D. copper tubing with a minimum operating pressure of 20 PSIG and a maximum of 80 PSIG.

Connect to cold water supply line with standard plumbing fittings, with shut off valve installed in an accessible place between thewater supply and the cuber. ln some cases a plumber will be required.

Water Limitations:

An ice machine is a food manufacturing plant, it takes in a raw material, water, and turns it inot a food product, ice. The purity of the water is very important in obtaining pure ice and in maximizing product life. It is generally better to filter the water, although there is no one filter that will cure all water problems. A good filter combined with a polyphosphate feeder gives about the best overall performance.

DRAIN

Connections: All drains are gravity type and must have a minimum of 1/4-inch fall per foot on horizontal runs. The drains to be installed to conform with the local plumbing code. Install a vertical open vent on drain line high point to insure good draining. The ideal drain receptacle is a trapped and vented floor drain. Recommended bin drain is 5/8 inch O.D. copper tubing and should be vented and run separately. Insulation for high humidity areas is recommended.

Terminate drains above the drain receptacle with the proper air gap per local code.

The ice machine sump drain is 3/4" FPT. There must be a vent at this connection for proper sump drainage.

WATER COOLED MODELS: On water cooled models, a separate cold water supply inlet is required, to be connected to a 3/8-inch female pipe thread (FPT) fitting at the rear of the cabinet. An additional drain line is required to drain the water cooled condenser, and must not interconnect to any other of the unit’s drains.

POTABLE

WATER

SUPPLY

AIR GAP

BETWEEN

DRAIN LINES

AND

BUILDING

DRAIN

3/8" MALE

FLARE

3/4" FPT

AIR COOLED

CONNECTIONS

SUMP DRAIN MUST

BE VENTED

HAND SHUT OFF

VALVE

AIR GAP

BETWEEN DRAIN

LINES AND

BUILDING DRAIN

WATER COOLED

CONNECTIONS

CONDENSER

DRAIN

BIN

DRAIN

WATER SUPPLY AND DRAIN CONNECTION

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Page 6

FINAL CHECK LIST

CMS1202

1. Is the cabinet in a room where ambient temperatures are within the minimum and maximum temperatures specified?

2. Is there at least six inches clearance at the left and back sides of the cabinet for proper air circulation? (Air Cooled models)

3. Has water supply pressure been checked to insure a minimum of 20 PSIG and a maximum of 80 PSIG operating pressure?

4. Is the cabinet level?

5. Check that any shipping material has been removed from inside the cabinet.

6. Check that the reservoir is properly secured to the bottom of the evaporator plates.

7. Have all electrical, water and drain connections been made?

8. Is the water supply line shut off valve installed and electrical wiring properly connected?

9. Check all refrigerant lines and conduit lines, to guard against vibration or rubbing and possible failure.

10. Have the bin and cabinet been wiped clean?

11. Has the Manufacturers Registration form been properly filled out? Check for correct model and serial numbers from Serial nameplate, then mail the completed card to the SCOTSMAN factory.

12. Has the owner/user been given the Service Manual and instructed how to operate and maintain the icemaker?

13. Has the owner been given the name and telephone number of the authorized SCOTSMAN Service Agency serving him?

DRAIN

HAND SHUT OFF

VALVE

HAND SHUT

OFF VALVE

LEVEL ASSEMBLY

SUMP

WATER

COOLED

DRAIN

BIN

DRAIN

OPTIONAL

FILTER

FINAL INSTALLATION

September 1993

Page 7

HARVEST

PORTION

FREEZE

PORTION

CMS1202

INITIAL START UP

1. Remove the front panels by removing screws at the base and pulling out.

2. Remove two screws and the control box cover.

3. Check that the two switches on the control box, the ICE-OFF-WASH rocker switch and the COMPRESSOR ON-OFF toggle switch are in the OFF position.

4. OPEN the water supply line shut off valve.

5. Switch the electrical power ON.

6. Inside the control box is the shaft of the timer and the switch assembly. Rotate the shaft of the timer and switch assembly clockwise until the cam is lined up as shown in “Front View of Timer”.

7. Move the ICE-OFF-WASH rocker switch to the ICE position.

8. Check the water fill cycle: For several minutes the inlet water valve will be open and water will flow into the reservoir. Near the end of the fill cycle, water should be overflowing the reservoir and draining thru the reservoir drain. If at the end of the fill cycle the reservoir is not full, repeat step

FRONT VIEW OF TIMER

ACTUATOR

BUTTON

CAM

MICROSWITCH

Check that the sump covers are snapped in place. Check that the water distributors are properly

seated at the top of the evaporators, and that water is flowing over all cube cells.

Note: Some water spray from the evaporators is normal when the machine is new. The spray will quit after a few cycles.

9. When the sump has filled, move the compressor ON-OFF toggle switch, to the ON position.

10. On air cooled models the fan motors will begin to blow warm air out the back of the machine. Water cooled models will begin to flow warm water out of the condenser drain.

Note: To optimize the balance between ice production and water use, the freeze cycle discharge pressure must be 220 P.S.I.G. Check discharge pressure and adjust the water regulating valve to obtain 220 P.S.I.G. discharge pressure.

11. Check operation of the freezing cycle: Ice will begin to form from the top of the evaporators down. After the first cycle freezing time will range between 15 and 18 minutes. Freeze cycle time is longer for temperatures above 70 when temperatures are below 70

F. and shorter

F. Average

complete cycle time is about 19 minutes.

CONTROL BOX

CUBE SIZE

CONTROL

TIMER

September 1993

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