Service manual

ManualsBrandsCornelius ManualsIce MakerI Series

Service Manual

SELF-CONTAINED FLAKED ICE MAKER

Model: Series 200, 525, 725

(R404A Refrigerant)

IMPORTANT:

TO THE INSTALLER.

It is the responsibility of

the Installer to ensure that

the water supply to the

dispensing equipment is

provided with protection

against backflow by an air

gap as defined in

ANSI/ASME A112.1.2-1979;

or an approved vacuum

breaker or other such

method as proved effective

by test.

Water pipe connections

and fixtures directly

connected to a potable

water supply shall be

sized, installed, and

maintained according to

Federal, State, and Local

Codes.

PRINTED IN U.S.A

IMI CORNELIUS INC; 1993–96

IMI CORNELIUS INC g One Cornelius Place g Anoka, MN 55303-6234

Telephone (800) 238-3600 Facsimile (612) 422-3246

Part No. 166240010

November, 1993

Revised: October, 1996

THIS DOCUMENT CONTAINS IMPORTANT INFORMATION

This Manual must be read and understood before installing or operating this equipment

Distributed By:

Commercial Refrigeration Service, Inc.

WWW.WorldRestaurantSupply.COM

toll free (866) Ice Maker

(623) 869-8881

Summary of content (28 pages)

PAGE 1
IMI CORNELIUS INC g One Cornelius Place g Anoka, MN 55303-6234 Telephone (800) 238-3600 Facsimile (612) 422-3246 Service Manual SELF-CONTAINED FLAKED ICE MAKER Model: Series 200, 525, 725 (R404A Refrigerant) IMPORTANT: TO THE INSTALLER. It is the responsibility of the Installer to ensure that the water supply to the dispensing equipment is provided with protection against backflow by an air gap as defined in ANSI/ASME A112.1.
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TABLE OF CONTENTS Page INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SPECIFICATIONS 200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SPECIFICATIONS 525 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SPECIFICATIONS 725 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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TABLE OF CONTENTS (cont’d) LIST OF FIGURES Page FIGURE 1. 200 SERIES SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 FIGURE 2. 525 SERIES SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 FIGURE 3. 725 SERIES SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 FIGURE 4. WATER LEVEL ADJUSTMENT PROCEDURE . . . . . . . . . . . . . . . . . . 6 FIGURE 5. TYPICAL WATER CIRCUIT . . . . . . . . . . . . . . . . . . . . . . .
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INTRODUCTION We have strived to produce a quality product. The design has been kept simple thus insuring trouble–free operation. This manual has been prepared to assist servicemen and users with information concerning installation, construction and maintenance of the ice making equipment. The problems of the serviceman and user have been given special attention in the development and engineering of our ice makers.
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SPECIFICATIONS 200 26 1/2-IN. 67-CM 13 1/2-IN. 34-CM 4-IN. 10-CM 7-IN. 18-CM ON-OFF SWITCH 5-IN. 13-CM 34-IN. 86-CM 40-IN. 102-CM REAR VIEW OF CABINET ELECTRICAL BOX AREA B 26-IN. 66-CM 6-IN. 15-CM 3/4-IN. 2-CM A C 19-IN. 48-CM 24 7/8-IN. 63-CM AIR FLOW 25-IN. 64-CM 7-IN. 18-CM A- 1/4 WATER INLETS (S.A.E. MALE FLARE) B- 5/8 O.D. TUBE (DRAIN) C- 1/2 O.D. TUBE (DRAIN) FIGURE 1.
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SPECIFICATIONS 525 26 1/2-IN. 67-CM 13 1/2-IN. 34-CM 2-IN. 5-CM 3 1/2-IN. 9-CM 3 1/2-IN. 9-CM 2 1/2-IN. 6-CM ON-OFF SWITCH 34-IN. 86-CM ELECTRICAL BOX AREA 5 5/8-IN. 14-CM B 26-IN. 66-CM REAR VIEW OF CABINET 5/8-IN. 2-CM A 19 1/2-IN. 50-CM 3 5/8-IN. 9-CM D E 40-IN. 102-CM MIN. C AIR IN 24 3/4-IN. 63-CM 38 3/4-IN. 97-CM 4 5/8-IN. 12-CM 26 3/8-IN. 67-CM 14-IN. 36-CM 6-IN. 15-CM MIN. 3 3/4-IN. 10-CM 3 3/8-IN. 9-CM A- 3/8 WATER INLET (S.A.E. MALE FLARE) B- 1/2 O.D.
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SPECIFICATIONS 725 30-IN. 76-CM 17 1/8-IN. 43-CM 2 3/8-IN. 6-CM 2-IN. 5-CM 2 3/4-IN. 7-CM 2 1/2-IN. 6-CM ON-OFF SWITCH 34-IN. 86-CM 40-IN. 102-CM MIN. 26-IN. 66-CM REAR VIEW OF CABINET ELECTRICAL BOX AREA 19 1/2-IN. 50-CM A 5 5/8-IN. 14-CM B D E AIR IN 28 3/8-IN. 72-CM 48-IN. 122-CM 4 1/2-IN. 11-CM 16 3/8-IN. 42-CM 6-IN. 15-CM 5/8-IN. 2-CM 3 1/4-IN. 8-CM C 5 1/32-IN. 13-CM 32 1/16-IN. 81-CM 4-IN. 10-CM A- 3/8 WATER INLET (S.A.E. MALE FLARE) B- 1/2 O.D.
PAGE 8
INSTALLATION INSTRUCTIONS You will get better service from the ice machine, longer life and greater convenience if you choose its location with care. Here are a few points to consider: 1. Select a location as close as possible to where you are going to use the ice. 2. Allow a minimum of 6” space at sides and rear of machine for ventilation. 3. A kitchen installation is not desirable as a rule. If a kitchen installation is necessary, locate the machine as far away from the cooking area as possible.
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F. Connect a drain hose to the condensate drain stub tube. NOTE: All plumbing must be done in accordance with national and local codes. G. Connect the electrical supply line to the unit. NOTE: Make sure the proper voltage and number of wires are provided. See serial plate for this information. NOTE: All wiring must conform to national and local codes. H.
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TYPICAL WATER CIRCUIT The supply water enters the float chamber through a small orifice. The water level rises and lifts the buoyant float with it. The float attached to the float arm seats a valve to shut off any further water supply. As water leaves the float chamber, the level drops along with the float and arm, causing the valve to open and admit more water. Thus the water level is maintained automatically as the machine operates.
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TYPICAL REFRIGERANT CIRCUIT Heat always flows from hot to cold and therefore, the ”heat load” supplied to the evaporator section by water gives up its heat to the refrigerant which is at a temperature below the freezing point of water. This refrigerant now passes through the heat exchanger back to the compressor, as a low pressure vapor. This low pressure vapor is compressed in the compressor, as it leaves the compressor at a high pressure in vapor form it enters the top of the condenser.
PAGE 12
ELECTRICAL CIRCUIT CIRCUIT DESCRIPTION As the manual on–off circuit breaker switch is pushed to ”on”, an electrical circuit is completed to the gearmotor via the circuit breaker gearmotor overload, power relay/contactor, gearmotor delay thermostat and the bin thermostat. After the previous circuit has been completed the condenser fan motor will start as will the compressor (via the high pressure control, the compressor starting relay and low ambient control).
PAGE 13
COMPRESSOR START RELAY This is a current type relay and contains a N.O. contact which is connected in series with the start winding of the compressor. The relay coil is electrically in series with the run winding. When power is applied, the compressor draws high current which sets up a magnetic field in the magnet coil which causes the relay to operate, closing the relay contact.
PAGE 14
MAINTENANCE THE FOLLOWING MAINTENANCE SHOULD BE PERFORMED AT LEAST EVERY SIX MONTHS ON FLAKED ICE MACHINES: 1. Check power supply with machine running for proper voltage. 2. Check water level in the float tank reservoir. Water level should be maintained at the top of the evaporator. Adjust if necessary. (See illustration and adjustment procedure) 3. Clean the air–cooled condenser coil with a stiff brush or vacuum cleaner (See procedure) CAUTION: CONDENSER COOLING FINS ARE SHARP, USE CARE WHEN CLEANING. 4.
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SANITIZING AND CLEANING PROCEDURE 1. Turn unit off at switch in upper rear right side panel. 2. Turn water off and remove water hose from bottom of float chamber inside of ice bin and allow to drain from the evaporator via the hose end; or 3. Remove float chamber cover and while holding float up to prevent more water from entering the float chamber, remove water hose from float chamber and proceed to drain the float chamber and evaporator. 4.
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WINTER STORAGE If the unit is to be stored in an area where the temperature will drop below freezing, it is most important that all water lines be drained to prevent them from freezing and possible rupture. To blow out the water line, disconnect the water supply at the cabinet inlet and use air pressure to force the water into the water reservoir pan. This can then be removed from the water pan. WATER COOLED CONDENSER – To remove water from condenser unhook water supply and attach compressed air hose.
PAGE 17
BK YL ON–OFF SWITCH CIRCUIT BREAKER RATED 2.0 AMPS GR WH BK WH BK BK BL BIN THERMOSTAT GEAR MOTOR BL 3 BK 2 GEAR MOTOR START CAPACITOR 4 64–77 MFD 165 VAC BL WH M YL RD RD GEAR MOTOR START RELAY WH FAN MOTOR MANUAL RESET HIGH PRESS CNTRL C.O. 450 PSIG BK FAN SWITCH C.O. 205 C.I.
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RD BL BR LB ON–OFF SWITCH CIRCUIT BREAKER RATED 1.5 AMPS GN/Y RD BK BL BL BL BIN THERMOSTAT 3 BL 2 4 GEAR MOTOR START CAPACITOR 21–25 MFD 220/250 VAC BL RD GEAR MOTOR START RELAY RD GEAR MOTOR RD M YL GN/Y RD FAN MOTOR MANUAL RESET HIGH PRESS CNTRL C.O. 450 PSIG BK FAN SWITCH C.O. 205 C.I.
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BK YL GW ON–OFF SWITCH CIRCUIT BREAKER RATED 2.0 AMPS WH BK WH BL BK BL BL DELAY THERMOSTAT BIN THERMOSTAT GEAR MOTOR BL 3 BK 2 4 RD GEAR MOTOR START CAPACITOR YL WH M YL RD RD GEAR MOTOR START RELAY RD BL BL BK BK M BK WIRE NUT CONDENSOR FAN FAN SWITCH C.I. 275 C.O.205 CONTROL HIGH PRESSURE C.O.
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ON–OFF SWITCH CIRCUIT BREAKER RATED 1.5 AMPS GW LB RD BR BK BL YL GEAR MOTOR BL BIN THERMOSTAT START RELAY DELAY THERMOSTAT 3 BK 2 RD BL GEAR MOTOR START CAPACITOR 4 RD GEAR MOTOR M RD RD YL YL GW RD FAN MOTOR M BK BK BL BK WIRE NUT FAN SWITCH CONTROL HIGH PRESSURE COMPRESSOR OVERLOAD 1 RD BK GW COMPRESSOR R C S BL RD YL GW RD COMPRESSOR START CAPACITOR 43–52 MFD 330 V BL BK L RD CONTACTOR COMPRESSOR START RELAY S M RD 220 VOLTS 50 Hz AF/WF–525PSC–50–R Part No.
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SERVICE ANALYSIS Trouble UNIT WILL NOT RUN COMPRESSOR CYCLES INTERMITTENTLY. MAKING WET ICE. Probable Cause Remedy A. On–off switch in ”off” position. A. Turn switch to ”on”. B. Defective on–off switch. B. Check and replace. C. Blown fuse. C. Replace fuse and check for cause of blown fuse. D. Thermostat set too warm for ambient. D. Adjust colder. E. Power relay contacts corroded. E. Check and clean. F. Defective thermostat. F. Check and replace. G. Loose electrical connection.
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Trouble WATER LEAKS. EXCESSIVE NOISE OR CHATTERING. MACHINE RUNS WITH FULL BIN OF ICE. UNIT OFF ON RESET. UNIT GOES OFF ON RESET. Probable Cause Remedy A. Worn or bad float valve A. Check and replace B. Float and arm assembly stuck B. Check and replace C. ”O” ring leaking at bottom of evaporator shell C. Check and replace D. Storage bin drain and tubing D. Check and repair A. Mineral or scale deposits on inside of evaporator shell A.
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Trouble UNIT GOES OFF ON RESET. (CONT’D) 166240010 Probable Cause Remedy I. Plugged expansion valve, causing low back pressure I. Check back pressure, replace valve, evacuate and re–charge system, replace drier–strainer J. Slight leak, causing low back pressure J. Check back pressure, find gas leak, repair leak, evacuate system, add drier and recharge K. Loose hold–down assy K. Check and tighten or replace L.
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ILLUSTRATED PARTS BREAKDOWN, SERIES 525–725 10 6 12 34 9 11 32 8 7 37 25 24 28 35 5 27 23 17 2 18 1 16 15 31 30 20 19 14 13 26 33 36 22 29 21 FIGURE 11.
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PARTS LIST ITEM NO .
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CABINET PARTS LIST 4 1 5 4 1 3 2 2 3 6 7 8 200 525 and 725 9 FIGURE 12. CABINET PARTS BREAKDOWN ITEM NO .
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CORNELIUS LIMITED COMMERCIAL WARRANTY PLAN TO THE ORIGINAL OWNER OF A CORNELIUS COMMERCIAL FLAKE ICEMAKER This warranty applies to Icemakers installed within the United States, Canada, Mexico and Puerto Rico only. For warranty information outside the U.S., Canada, Mexico and Puerto Rico, contact your nearest IMI Cornelius Sales Office. PARTS WARRANTY PERIOD IMI CORNELIUS INC.
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IMI CORNELIUS INC.