Kold-Draft GB620A Operators Manual

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KOLD-DRAFT

CLASSIC

GB/GT/T-250

OLD-DRAFT

Ice Machine Products

T-260/AKD

Service and Parts Manual

1525 East Lake Road, Erie, PA 16511-1088 814/453-6761 FAX 814/455-6336

LIT-09502 Rev.4/07

A Tradition of Excellence In Ice Equipment.

Page No.

Table of Contents, 3/02

Table of Contents, CLASSIC Models, 5/03 printing ....................1

Key to CLASSIC Cuber Model Numbers .............................2

CLASSIC Cuber Installation Specifications ..........................3

CLASSIC Cuber Installation Guidelines ..............................5

General Information .............................................. 11

Preventive Maintenance ..........................................12

GB & GT CLASSIC Cuber Installation Instructions ....................14

CLASSIC Cuber Start-up Instructions ...............................19

Chart of Refrigerant Operating Pressures, Ice Cube Sizes and Weights 20

GB Multiplexing (Stacking) Instructions .............................21

GT3XX Multiplexing (Stacking) Instructions ..........................25

Operational Components, CLASSIC Cubers ..........................32

Controls and Adjustments, CLASSIC Cubers ......................... 37

Sequence of Operation, CLASSIC Cubers ...........................42

Service and Troubleshooting, CLASSIC Cubers:

Actuator Motor ...............................................46

Water Plate ..................................................57

Liquid Level Controller .........................................59

Cube Quality .................................................60

Compressor Charts, CLASSIC Cubers ..............................62

Wiring Diagrams, CLASSIC Cuber (Jan. '92 through Feb. '96) ........... 68

Wiring Diagrams, CLASSIC Cuber (March '96 through Sept. '97) .........77

Wiring Diagrams, CLASSIC Cuber (Oct. '97 and later) .................. 81

T-25X/T-26X Crusher Installation Instructions .........................95

T-25X/T-26X Crusher Installation Specifications .......................99

T-25X/T-26X Crusher Preventative Maintenance ......................100

AKD-125 Dispenser Installation Instructions ........................101

AKD-125 Dispenser Installation Specifications ......................104

AKD-125 Dispenser Preventative Maintenance ...................... 105

Wiring Diagrams, T-250/T-251 .....................................106

Wiring Diagrams, AKD-125 ........................................107

Parts List-Pictorial, CLASSIC Cubers ...............................108

Parts List-Pictorial, T-25X/T-26X/AKD-125 ........................... 139

Parts List-Numerical, CLASSIC Models ..............................140

Date Code ......................................................150

Rev:3/02 Kold-Draft® Service & Parts Manual

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Key to Model Numbers

GB 4 5 1 W HK

C = Full Cube (1-1/4" 1-1/4" x 1-1/4") HK = Half Cube (1-1/4" x 1/1/4" x 5/8") K = Cubelet (5/8" x 5/8" x 1-1/4")

A = Air Cooled Condenser-Self Contained W = Liquid Cooled Condenser-Self Contained R = For Remote Air Cooled Condenser

1 = 115 Volt-60 Hz.-1 Ph. (2-wire plus Ground) 4 = 208/230 Volt-60 Hz.-1 Ph. (2-wire plus Ground) 5 = 208/230 Volt-60 Hz.-3 Ph. (3-wire plus Ground) 7 = 220/240 Volt-50 Hz.-1 Ph. (2-wire plus Ground)

Electrical Characteristics

Condenser Type

Cube Size

2 = R-502, Copeland Compressor except GB1224/GB1225 (Bristol) 3 = R-502, Bristol Compressor 4 = R-404a, Bristol Inertia Compressor/Polyolester Lubricant except

3 = 300 Series 4 = 400 Series 5 = 500 Series 6 = 600 Series 12 = 1200 Series

Cabinet Width

GB = Horizontal Unit (42" wide) GT3XX = Slimline Unit (28-1/2" wide) GT5XX = Slimline Unit (30" wide)

Kold-Draft® Service & Parts Manual Rev:3/

Classic Cuber Series

Modification Code

GT341/GT344 (Bristol Reed Valve Compressor w/POE Lubricant)

5 = R-404a, Tecumseh Compressor w/POE Lubricant

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GB Series Cubers

Installation Specifications

FUSE/HACR

BREAKER SIZEMINIMUM

(AMPS)CIRCUITELECTRICAL

NORMAL MAXIMUM

AMPACITYSUPPLYMODEL

25 3021115/60/1GB441A 20 3017.8115/60/1GB441W 20 3017.8115/60/1GB441R

20 2515.3208-230/60/1GB644R

30 5029.1208-230/60/1GB1244W 30 5029.1208-230/60/1GB1244R 20 2515.5208-230/60/3GB1245W 20 2515.5208-230/60/3GB1245R 35 55 32208-230/60/1GB1254W 35 5532208-230/60/1GB1254R 20 2516.9208-230/60/3GB1255W 20 2517.6208-230/60/3GB1255R

25 3523.3115/60/1GB431A 25 3020.1115/60/1GB431W 25 4025115/60/1GB431R 15 2012.7208-230/60/1GB434A 15 159.6208-230/60/1GB434W

15 1511.1208-230/60/1GB444A 15 1510.2208-230/60/1GB444W

20 3019.9115/60/1GB451A 20 2516.4115/60/1GB451W 15 2011.9208-230/60/1GB454A 15 1511.3208-230/60/1GB454W

15 1510.1208-230/60/1GB454R 20 2516.6208-230/60/1GB634A 20 2515.7208-230/60/1GB634W 15 2514.8208-230/60/1GB634R 20 2516.2208-230/60/1GB644A 20 2515.3208-230/60/1GB644W

20 3018208-230/60/1GB654A 20 3017.3208-230/60/1GB654W

20 3017.4208-230/60/1GB654R 30 4528.2208-230/60/1GB1224W 30 4528.2208-230/60/1GB1224R 20 3018.8208-230/60/3GB1225W

35 5534208-230/60/1GB1254A

Rev:3/02 Kold-Draft® Service & Parts Manual

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GT Series Cubers

Installation Specifications

FUSE/HACR

BREAKER SIZEMINIMUM

(AMPS)CIRCUITELECTRICAL

AMPACITYSUPPLYMODEL

NORMAL MAXIMUM

20 2517.8115/60/1GT331A 20 2516.6115/60/1GT331W 15 158.6208-230/60/1GT334W 20 2517.8115/60/1GT341A 20 2516.6115/60/1GT341W 15 158.6208-230/60/1GT344A 15 158.6208-230/60/1GT344W

20 2515.6115/60/1GT351A 15 2014.4115/60/1GT351W 15 159.3208-230/60/1GT354A

15 158.6208-230/60/1GT354W 25 35 23.4115/60/1GT551A 20 3017.9115/60/1GT551W 20 3520115/60/1GT551R 15 2514.9208-230/60/1GT554A 15 2014.3208-230/60/1GT554W

Voltage Tolerances

Full-load MINIMUMNo-load MAXIMUMNominal

Kold-Draft® Service & Parts Manual Rev:3/02

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104126115 198252208/230 210250220/240

Kold-Draft® Remote Condenser Single Evaporator Cuber Charging Requirements

Installation Guidelines

R-502, Factory charge is 96 oz. (6 lbs.)

R-404a, Factory charge is 84 oz. (5.25 lbs.)

{

Charts based on 30 ft. of 1/2" O.D. discharge (15 ft. exposed to ambient temperature

under 70} F.) and 30 ft. of 3/8" O.D. liquid return lines, at 20} F., T.D.

{

Lines over 50 ft. are not recommended.

{

Minimum Condenser Height: Condenser must be install ed above refrigerant line quick connects at rear of ice machine. No part of the refrigerant lines, between the cuber and the condenser, should fall below this point.

SEE SEPARATE INSTRUCTIONS FOR THE CONDENSER.

{

For Condensers other than Kold-Draft®, the install er must determine the condenser liquid volume at minimum operating temperature. ˆFor R-502 Cubers, the basic charge is 2 lbs. To this, add the condenser liquid volume calculation and the line charge calculation from the Line Length Correction Chart to obtain the minimum total charge. ˆFor R-404a Cubers, the basic charge is 1-3/4 lbs. To this add the condenser liqui d volume calculation and the line charge calculation from the Line Length Correction Chart to obtain the minimum total charge.

Rev:3/02 Kold-Draft® Service & Parts Manual

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Kold-Draft® Remote Condenser Dual Evaporator Cuber Charging Requirements

Installation Guidelines

R-502, Factory charge is 128 oz. (8 lbs.)

R-404a, Factory charge is 112 oz. (7 lbs.)

{

Charts based on 30 ft. of 1/2" O.D. discharge (15 ft. exposed to ambient temperature under 70} F.) and 30 ft. of 3/8" O.D. liquid return lines, at 20} F., T.D.

{

Lines over 50 ft. are not recommended.

{

Minimum Condenser Height: Condenser must be installed above refrigerant line quick connects at rear of ice machine. No part of the refrigerant lines, between the cuber and the condenser, should fall below this point.

SEE SEPARATE INSTRUCTIONS FOR THE CONDENSER.

{

For Condensers other than Kold-Draft®, the install er must determine the condenser liquid volume at minimum operating temperature. ˆFor R-502 Cubers, the basic charge is 3-1/2 l bs. To this, add the condenser l iquid volume calculation and the line charge calculation from the Line Length Correction Chart for the total charge. ˆFor R-404a Cubers, the basic charge is 3 lbs. To this, add the condenser liquid volume calculation and the line charge calculation from the Line Length Correction Chart to obtain the minimum total charge.

Kold-Draft® Service & Parts Manual Rev:3/02

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GB Cubers

energy efficiency can be obtained by reducing water fill level (lowering the high-level

Installation Guidelines

GB4XX GB6XX GB12XX

PARAMETER Water fill level

*Approximate cycle time, min. 15 33/26 13 25.5/21 12 22.5/18 Approximate harvest weight, lb. 4.0 7.7/7.1 4.0 7.7/7.1 8.0 15.4/14.2

---------------------------------------------------------------------------------------------------------------------------------------

REFRIGERANT CHARGE,

-------------------------------------------------------------------------------------------------------------------------------------- GB44X GB 4 5X GB64X GB124X

REFRIGERANT CHARGE, Oz. (R-404a) Air cooled: 22 19 28 62

(Top of tank to level in control tube)

GB43X GB63X GB122X

Oz. (R-502) Air cooled: 25 Air cooled: 35 ------

Liq. cooled: 22 Liq. cooled: 22

Liq. cooled: 20 20 22 52 Remote(MAX): 208 208 208 272

Remote(MAX):192 Remote(MAX):192 Remote(MAX):256

K C/HK K C/HK K C/HK

3-5/8" 2-3/4" 3-5/8" 2-3/4" 3-5/8" 2-3/4"

MODEL SERIES/CUBE SIZE

MODEL SERIES

GB65X GB125X

Liq. cooled: 60

GT Cubers

MODEL SERIES/CUBE SIZE

GT3XX GT55X

K C/HK K C/HK PARAMETER Water fill level *Approximate cycle time, min. 14 31/21 15.5 31/24 Approximate harvest weight, lb. 2.0 3.9/3.5 4.0 7.7/7.1

--------------------------------------------------------------------------------------------------------------------------------------

REFRIGERANT CHARGE, Oz. (R-502

--------------------------------------------------------------------------------------------------------------------------------------

GT34X GT35X GT55X

REFRIGERANT CHARGE, Oz. (R-404a) Air cooled: 24 Air cooled: 19 Air cooled: 30

(Top of tank to level in control tube)

3" 2-5/8" 3-5/8" 2-3/4"

MODEL/SERIES GT33X

)

Liq. cooled: 22

MODEL SERIES

Liq. cooled: 20 Liq. cooled: 20

------ ------

Air cooled: 27

Liq. cooled: 20

Remote(MAX):208

* Values are for Air-cooled (or GB12XXW) models at 90} F. air/70} F. water temperatures with cuber adjusted to produce fully-formed ice. Greater capacity and

Rev:3/02 Kold-Draft® Service & Parts Manual

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probe) to produce ice with larger dimples. A slight adjustment of the probe will result in

Installation Guidelines

a noticeable effect on dimple size. The control stream will not rise over the dam with lower water fill levels than indicated above.

All Liquid Cooled Models

The recommended condensing temperature is 104} F.(40} C.). If necessary to adjust the coolant regulator valve, the high si de pressure at mid-freeze cycle should be 230 psig for R-502 or 250 psig for R-404a.

All Remote Air Cooled Models

Fan cycling controls are not provided and are not beneficial except to automatically stop the fan during off-cycles. If such controls are used the settings should not allow fan cycling during freeze cycles. The suggested settings for fan cycli ng controls are: ON at approx. 250 psig; OFF at approx. 220 psig CAUTION: Fan cycling controls do not reduce the minimum charge requirements. If there is not an adequate amount of liquid refrigerant in the receiver at start-up, the system will pump down repeatedly or run at a very high superheat (l ow back-pressure) with little -or- no refrigeration at the evaporator(s). Refer to the Remote Condenser Model Charging Requirements section.

CAUTION: { RISK OF PROPERTY DAMAGE, EQUIPMENT FAILURE, OR FIRE. { Failu re to comply with all installation specifications and instructions may cause erratic operation and the risk of damage or fire.

Ambient Operating Temperatures

Minimum: 45 Maximum: 90} F. (32

}

F. (7} C.) NOTE: Under 60} F may cause erratic bin thermostat operation

}

C.)

Potable Water and Condensing Liquid Supply

Minimum Water Temperature: 45} F. (7} C.) Maximum Water Temperature: 90} F. (32} C.) Minimum Water Pressure: 30 psig Maximum Water Pressure: 100 psig* * If regulator is used, recommended setting is 30 to 50 psig

Clearance Requirements

GB Cubers (except GB1250A---see the following drawings)

REAR (beyond condenser if protruding from cabinet) and TOP: 6 inches RIGHT SIDE: 8 inches LEFT SIDE: 4 inches

GT 3XX Cubers GT55X Cubers

REAR and TOP: 6 inches 8 inches RIGHT SIDE: 6 inches 4 inches LEFT SIDE: 6 inches 4 inches

Kold-Draft® Service & Parts Manual Rev:3/02

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Plumbing Requirements

Installation Guidelines

Potable Water Inlet Fitting: 1/4" F.P.T. (GB430/GB440/GB450/GB630/GB640/GB650)

1/2" F.P.T. (GB1220/GB1240/GB1250)

1/4" F.P.T. (GT330/GT340/GT350/GT550) Drain: 3/4" I.D. flexible tubing Liquid Cooled Condenser Inlet Fitting: 3/8" F.P.T. Liquid Cooled Condenser Outlet Fitting: 1/2" F.P.T. Remote Air Cooled Liquid Line Fitting: 3/8" Tubing Quick Connect Remote Air Cooled Discharge Line Fitting: 1/2" Tubing Quick Connect

Electrical, water and drain locations are shown on the following (5) drawings:

Rev:3/02 Kold-Draft® Service & Parts Manual

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Water Treatment

Please consult your local water conditioning supplier for specific recommendations.

Installation Guidelines

There are no specific requirements for water treatment provided that the ice making supply water is potable and not laden with sediment. The use of additional water

treatment may facilitate or reduce the frequency of the need for cleaning as well as reduce the corrosive effects of chlorinated (greater than 0.2 ppm residual chlorine) water supplies.

Kold-Draft® Service & Parts Manual Rev:3/02

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General Information

CAUTION:

{ RISK OF PROPERTY DAMAGE, EQUIPMENT FAILURE OR FIRE. { Failure to comply with all installation specifications and instructions may cause erratic operation and the risk of damage or fire.

Ampacity: Minimum ampacity does not indicate typical running current value. Refer to equipment NAME PLATE data. Use minimum ampacity value for sizing branch circuit conductors up to 25 feet in length. For conductor length over 25 feet up to 100 feet, increase 1 AWG size. Over 100 feet requires a 2 or more AWG size increase.

Branch circuit protection: Proper protection must be provided by either fuse(s) or HACR type circuit breaker(s). Each ice maker must be provided with a separately protected circuit with no other load(s). A fused disconnect installed adjacent to each ice maker is recommended (must be supplied by installer), and may be required by local codes. NORMAL protector size is based on rated voltage and operati on at lower than extreme temperature limits. When branch circuit conductors are sized to permit, increasing the protector size (up to the specified maximum) may avoid nuisance protector opening under harsh operating conditions.

Water supply: Minimum 30 psig supply pressure while the ice maker is filling is required. The water fill rate is 0.6 GPM for each GT330, GT340, or GT350, 1 GPM for each GB430, GB440, GB450, GB630, GB640, GB650, or GT550, and 2 GPM for each GB1220, GB1240, or GB1250. Backflow/Backsiphonage protection is provided by an internal ai r gap (accepted by NSF). If additional protection is required by local codes or authorities, any device(s) and installati on of the same, including specification and cost, are the responsibility of the installation specifier.

Ice maker drain: The size of the gravity drain for the ice maker purge and rinse water must not be reduced. Individual drains from stacked ice makers may be discharged into a standpipe or manifold with a minimum 1-1/2 inch air gap at each ice maker connection.

Liquid condenser coolant pressure drop: Condenser coolant pressure drop may reach 20 psig during peak load with 85} F. coolant temperature at recommended refrigerant high-side pressure. The condenser coolant (water) regulating valve may require adjustment due to variations in the coolant supply characteristics to provide optimum efficiency.

Remote condenser models: Remote condenser models from the factory carry a minimal charge and will likely require an additional refrigerant charge to accommodate all condenser ambient temperatures and/or the volume potentially contained in refrigerant lines and condensers. There is a label on the receiver that i ndicates factory charge and the maximum charge, along with a space to write in the total system charge. Ice makers are provided with re-sealable refrigerant l ine connection coupl ings. For all remote condenser installations refer to the Installation Guidelines located in the front of this manual.

All models are intended FOR INDOOR USE ONLY with PERMANENT CONNECTION TO THE FIELD ELECTRICAL SUPPLY. The remotely-installed condensers supplied by

Kold-Draft® may be installed outdoors, and they require a separate electrical supply.

Rev:3/02 Kold-Draft® Service & Parts Manual

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Cleaning: Usually at 3 to 6 months intervals, depending on water conditions.

Preventative Maintenance

Inspections: During cleaning - at least twice a year. Service: All such equipment will require service at some time. Service requirements

will be minimized with faithful preventative maintenance including good housekeepi ng at the i nstal lati on si te. A CALL F OR SERVICE AS SOON AS A POSSIBL E PROBLEM IS NOTICED MAY AVOID EXTENSIVE REPAIRS.

CAUTION: { RISK OF PERSONAL INJURY OR PROPERTY DAMAGE.

{ Do not use ammonia solutions in cleaning any part of the ice maker. { Do not mix ice machine cleaner and sanitizer together. { Use rubber gloves, eye protection and an apron. { Clean up splashes or spillage immediately. { Follow these instructions exactly.

Ice Cuber Cleaning Instructions

1. GB & GT55X: Mix one bag of Kold-Draft® ice machine cleaner (55R-01000) in (2) quarts, or GT3XX: Mix 1/2 bag of Kold-Draft® ice machine cleaner (55R-01000) in (1) quart of clean, warm water (180 evaporator/water plate assembly to be cleaned.

2. If the cuber is operating, wait until a harvest cycle occurs then trip the 'ICE-OFF-WASH' switch to 'WASH' as soon as the water plate begins to close.

3. Empty all ice from the storage bin and shut off other ice makers on the same bin.

4. After the water fill is completed, switch the 'ICE-OFF-WASH' to 'OFF'. While pinching the water level control hose, carefully remove the water level control tube from the cap. HOLD THE TUBE HIGH ENOUGH SO THAT THE TUBE DOES NOT OVERFLOW. Release the hose and pour about half of the mixed cleaner into the tube. Replace the tube on the cap, while pinching the water level control hose, then pour the remaining cleaner into the control stream box.

5. Switch the 'ICE-OFF-WASH' to 'WASH' and allow the cleaner to circulate for approximately 15 minutes, then pull the right side of the water plate down until the pump stops and hold it until the pump will not re-start when released.

6. The water plate will open and dump the cleaner then close immediately, and the water system will refill. Repeat this dumping and refilling three (3) times to rinse out all of the cleaning solution.

7. Mix a sanitizing solution of two (2) oz. 5-1/4% sodium hypochlorite (household bleach or equivalent) and one (1) quart clean water.

8. As in step #4, pour about half of the sanitizing solution into the water level control tube and the remaining sanitizer into the control stream box.

9. Allow the sanitizing solution to circulate AT LEAST 15 MINUTES, then dump and rinse two (2) times as described above. If necessary, reset the water level probes to the proper levels.

}

F. MAX.) for each

Kold-Draft® Service & Parts Manual Rev:3/02

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10. While the cleaning and sanitizing solutions are circulating, clean, rinse and

Preventative Maintenance

sanitize all accessible parts of the ice-making compartment of the cuber with clean cloths. Use a cleaning solution of 8 tablespoons (1/2 cup) baking soda per gallon of warm water, and a sanitizing solution of no less than 1 teaspoonful (5 ml.) 5-1/4% sodium hypochlorite per quart of clean water.

11. After cleaning has been completed, trip the 'ICE-OFF-WASH' switch to 'ICE' and check to be sure that the cuber is operating properly, particularly the water level probes. Then re-assemble and secure all cabinet enclosure panels.

Ice Bin Cleaning Instructions

The bin should be cleaned periodical ly. If bin drain has any horizontal run, remove ice from left side of bin and flush with two (2) quarts of hot water monthly. (Long drain lines should be flushed weekly.)

1. Clean exterior of bin frequently.

2. To clean the interior, follow the instructions provided with bin.

3. Empty the storage area and disconnect the electrical power supply to the ice maker(s).

4. Remove the ice maker inspection panel, top, left and right end panels, and drain pan. Sliding bin doors may be removed by lifting them up, then pulling out from the bottom.

5. When cleaning the ice maker, follow the ice maker cleaning instructions and clean the bin last.

6. Replace all enclosure panel s and drain pan before re-connecting the electrical supply.

CAUTION: { RISK OF PERSONAL I NJ URY, EQ UI PMENT DAMAGE O R CONTAMINATION

OF THE ICE BIN. { Do not use ammonia solutions or strong detergents in cleaning any part of the ice maker or bin. { Never use appliance polishes, finish preservatives or cleaners in ice storage areas.

Winter Conditioning

Ice cubers that are idle in the winter months require preparation to prevent damage from freezing. The following procedure should insure the safety of the cuber so that it can be started easily the following year.

1. Shut off and detach the water supply to the ice cuber.

2. If the cuber contains a water-cooled condenser, the cuber must be running while air is introduced through the condenser water inlet connection to blow the water out of the condenser coils.

3. The cuber shoul d then be run into defrost to drain the water tank and air should be introduced into the water inlet to blow out the water solenoid.

Rev:3/02 Kold-Draft® Service & Parts Manual

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CHECK FOR FREIGHT DAMAGE BEFORE PROCEEDING. Even though damage to

GB &

Cuber

Installation Instructions

the carton may not have been evident, check for hidden damage and contact freight carrier immediately, if necessary, to file a claim.

THIS EQUIPMENT MUST BE INSTALLED IN COMPLIANCE WITH THE APPLICABLE FEDERAL, STATE/PROVINCE AND/OR LOCAL PLUMBING, ELECTRICAL AND HEALTH/SANITATION CODES AND REQUIREMENTS.

CAUTION: { RISK OF PERSONAL INJURY, PROPERTY DAMAGE, EQUIPMENT FAILURE

OR FIRE. { Refer all maintenance to qualified personnel. { Never operate this equipment with covers, panels or other parts removed or not properly secured. { Warn all users to clean up spillage immediately, keep storage bin doors closed, and report any apparent leakage or unusual sounds to responsible maintenance personnel.

Installation

NOTE: For Multiplex Installations, please refer to Multiplex specific instructions before

proceeding. Clearance and Utility provisions are shown on the following (4) drawings:

Kold-Draft® Service & Parts Manual Rev:3/02

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GB &

Cuber

Installation Instructions

GB1220 GB1240

GB1250

Kold-Draft® Service & Parts Manual Rev:3/02

- 15 -

GB &

Cuber

Installation Instructions

GT55X

1. Position the ice storage bin so that minimum clearances will be available around the ice maker for ventilation and utility connections.

2. Level the bin with adjusters on legs, or by shimming if the bin is to be sealed to the floor. If gaps due to shi ms are greater than 1/8 inch, instal l a cove molding around the bin bottom. Seal the bin or molding to the floor with NSF Certified RTV sealant (Dow Corning RTV 732 or equal).

3. Remove the cuber cabinet TOP Panel as follows: Lift from the front and pull forward (GT55X push backward) until the rear clip is disengaged from the chassis..

4. Remove the remaining cuber cabinet panels as follows: FRONT: Remove the (4) screws at the bottom and front-sides, pull forward. SIDES: Pull forward and lift to disengage the clips from the chassis. NOTE: When re-installing the panels, make sure that the screws engage the TOP panel.

5. GB: Remove the ice deflector(s), ice chute(s) and drain pan(s). The Drain tube assembly(s) is(are) packed with the drain pan(s). GT3XX: Remove the ice chute/drain pan. The drain tube is packed with the

drain pan.

GT55X: Remove the ice chute and drain pan. The drain tube is packed with the

drain pan.

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6. Install gasketing on top of bin if required. Gasket material must be positioned so

GB &

Cuber

Installation Instructions

that it extends to the outside edge of the perimeter of the cuber chassis when the cuber is in place.

7. CAREFULLY place the cuber onto the gasketed bin, noting the alignment of the mounting holes in the chassis if mounting means are provided on the bin. Follow the bin installation instructions for securing the cuber to the bin.

8. GB: Install the drain pan(s), ice chute(s) and ice deflector(s). Route the drain tube assembly(s) through the rear of the bin, and clamp the tubing to the drain pan nipple(s). GT3XX: Install the drain pan/chute. Route the drain tube through the rear of the

bin, and clamp the tubing to the drain pan nipple. GT55X: Install the drain pan. Route the drain tube through the rear of the cuber, and clamp the tubing to the drain pan nipple.

WARNING: { RISK OF CONTAMINATION OF ICE IN THE BIN.

{ Provide separate, unconnected drains for the ice maker and the bin. { Consult local codes for sui table connections to the building drains.

9. Purge the potable water supply line.

10. Remove the water plate shipping strap(s).

11. GB: Route the bin thermostat capillary tube through the grommet, in the condensing unit pan and push all the way down. (See the following diagrams) Note- It may be necessary to increase the distance that the cap tube enters the ice storage area. Bin geometry, deflectors, baffles, etc., may cause an ice jamb above the bin door opening. Carefully uncoil the insulated loop of cap tube, while recoiling it further up, to lower the bin fill level. Cautio cap tube. THIS SECTION IS AS REVISED SEPTEMBER, 2004.

n: do not kink the

Kold-Draft® Serv ice & Parts Manual Rev:3/02

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GT3XX: Route the bin thermostat capillary tube through the grommet in the

GB &

Cuber

Installation Instructions

right end frame wall and under the ice chute. See the diagram and notes following for location and securing of the capillary tube.

GT3XX CUBER S

GT55X: Route the bin thermostat capillary tube along the right end frame wall and front rail, out through the bulb hol der and down into the bi n. See the diagram following for location and securing of the capillary tube.

12. If start-up will not occur immediately, secure all cuber cabinet panels now.

INSTALLER NOTE: There is no electrical interconnection provisi on in "R" models for the condenser fan.

Kold-Draft® Serv ice & Parts Manual Rev:3/02

GT55X CUBERS

- 18 -

Consult the Installation Specifications, Sequence of Operation and Service and

Cuber

Start-up

Instructions

Troubleshooting sections if variations from the following description of operation are

noticed.

1. Remove the top and front cabinet panels.

2. Be sure that the 'ICE-OFF-WASH' switch is in the center 'OFF' position.

3. Install and connect refrigerant lines and condenser on "R" models.

4. Turn on supply water and power. Be sure that condenser liquid ("W" models) or refrigerant lines and condenser ("R" models) are ready for use before turning power on. Check for leaks in water/liquid supply connections. NOTE, "R" MODELS ONLY: The compressor will start immediately when power is applied, regardless of the 'ICE-OFF-WASH' switch position, if the low-side pressure is at or above the pump-down controller cut-in setting. Be sure that the compressor stops when the low-side pressure is between 5 and 10 psig.

5. Be sure that pump hoses are connected, then pour approximately one pint of clean tap water into the circulation system to lubricate the pump seal.

6. Move the 'ICE-OFF-WASH' switch to the right 'WASH' position and observe the water fill cycle and the pump running. If all water distributor holes do not produce full streams and the appearance of air i s evident i n the tube, pi nch the plastic tube connected to the water solenoid valve outlet while water is running until the streams are full all the way across the distributor tube. Water fill is complete when the water in the liquid level control tube reaches the high-level probe. At this time, observe that the water shuts off and that there are no water leaks (dripping into the drain pan). NOTE: In dual-evaporator models, be

sure that the Master and Slave water fill level difference is less than 1/4" for "K" or 1/8" for "C" or HK" cube sizes. See LIQUID LEVEL

CONTROLLER text.

Kold-Draft® Service & Parts Manual Rev:3/02

7. Pull the right end of the water plate down, stretching the springs until the pump stops, and hold until the pump does not re-start when released. The water plate will open fully to dump the batch of water previously taken in, then close immediately. The water plate should stop when it is fully closed, and the water fill cycle will repeat.

8. After the water fill is complete, move the 'ICE-OFF-WASH' switch to the left 'ICE' position and observe that the compressor (and fan in "A" models) starts, and the water pump continues to run. The refrigeration system operation should be checked during the first few cycles, and any adjustments should be made at this time. Consult the "Controls and Adjustments" section in this manual. Initial ice making cycles may exhibit super-cooling of the circulating water so that ice crystals form in the circulating water (slush), possibly stopping the flow momentarily. If water goes over the control stream dam when circulation resumes after two (2) cycles AND with all skin panels installed, consult the Factory.

- 19 -

9. Test the bin thermostat(s) by holding some ice against the capillary tube(s). If

Cuber

Start-up

Instructions

necessary, adjust the thermostat(s) so that the ice maker(s) shut off within 30 seconds after ice contacts the capillary tube(s).

10. Be sure that the (GB: drain pan(s), ice chute(s) and deflector(s) are in place,) (GT: drain pan and ice chute is in place,) and that the electrical control box cover(s) is(are) secured, then replace the cabinet panels(skins). Start with the SIDE panels, then the FRONT panel. Secure the FRONT panel with (2) screws along the bottom edge, replace the TOP panel and finally secure all the panels with (2) screws in the TOP-SIDES of the machine.

11. Discard ice from start-up cycles, then clean and sanitize the bin following the instructions provided with the bin.

12. Complete and mail the Registration Certificate and leave all instructions with the owner/user. Emphasize the "CAUTION: RISK OF PERSONAL INJURY..." notice on the first page of the GB & GT Cuber Installation Instructions, and the importance of Preventative Maintenance.

CHART OF TYPICAL REFRIGERANT OPERATING PRESSURES

All pressures are in psig

TIME

R-502 or

R-404a

freeze cycle

harvest

Approx. 150Approx. 15070 to 150Harvest

cycle

HIGH-SIDELOW-SIDE,

Minimum

R-404aR-502

RAWRAW

200 Min. ******250*180 Min. ******230*Approx. 50Beginning of

200 Min. *******250*180 Min. *******230*12 to 20Just before

Approx. 150Approx. 150150

150

Minimum

All pressures may vary with operating conditions and adjusrments. * 104o F condensing temperature--adjustable with coolant regulator valve. ** High-side pressure at beginning of freeze cycle in "A" models is likely to be

higher than pressures shown for "W" models.

*** High-side pressure just before harvest in "A" models in cool ambients is likely to

be lower than pressures shown for "W" models.

**** See remote condenser charging requirements if lower than minimum shown.

ICE CUBE SIZES AND WEIGHTS

Weights and Cubes per Batch

CUBE SIZE

LETTER

DIMENSIONS

(Inches/cm)

Weight,

each cube

(oz./g)

GT3XX

GB4XX,

GB6XX GT5XX

GB12XX

216108541.15/32.61.2 x 1.2 x 1.2/3.1 x 3.1 x 3.1C

4322161080.53/151.2 x 1.2 x 0.6/3.1 x 3.1 x 1.5HK

4322161080.3/8.50.6 x 0.6 x 1.2/1.5 x 1.5 x 3.1K

Kold-Draft® Service & Parts Manual Rev:3/02

- 20 -

Section I

GB Multiplexing Instructions

Stacking new GB Classic units above new GB Classic units

and old GB Classic units above new GB Classic units

CAUTION: { RISK OF PERSONAL INJURY, PROPERTY DAMAGE, EQUIPMENT FAILURE

OR FIRE. { Refer all maintenance to qualified personnel. { Never operate this equipment with covers, panels or other parts removed or not properly secured. { Use a suitable lifting means and be careful of sharp edges.

NOTE: Please refer to Section II of these instructions for installing a new GB Classic unit above an old GB Classic unit.

1. Remove cabinet panels from upper and lower ice makers.

2. Mount support clips on top side flanges of lower ice maker frame and position so the clip hol es are aligned with the holes in the frame. (See Illustration "A") The lower flange of the front support clips must slide into the space between the top side flange of the ice maker and the top flange of the electrical box.

3. Apply gasket (supplied with kit) to the lower ice maker frame and cut to fit. (See Illustration "B") Place gasket over the supports clips already in position and pierce the gasket where it covers the mounting holes.

Kold-Draft® Service & Parts Manual Rev:3/02

- 21 -

4. Apply gasket to the top inside flange of the lower ice maker front cabinet panel.

GB Multiplexing Instructions

(See Illustration "C")

5. On installations with old GB Classic units it is necessary to drill (2) 5/16" dia. holes and enlarge (1) 3/16" dia. hole to 5/16" dia. in the bottom of the old Classic frame. (See Illustration "D") The transformer box will have to be moved temporarily in order to do this. The two right side holes can be drilled through the cond. unit pan from the underside, using the existing frame holes as a guide.

6. Position upper ice maker on lower unit and align mounting holes. Install cap screws, lock washers and nuts. (See Illustration "A") CAUTION: Support upper unit until all fasteners are secured.

7. Install the upper ice maker drain pan and ice chute. Connect the drain hose elbow assembly to the drain pan and route the drain hose through the rear of the lower ice maker. If the old GB Classic drain pan does not have a hose flange, exchange it with the pan from the new GB Classic unit.

8. Route the upper ice maker bin thermostat capillary tube or probe wire down to the lower ice maker chute opening for positi oning. Keep capillary tube or wire toward the front of the partition wall out of the path of falling ice. Stacking a third ice maker will require a bin thermostat with a longer capillary tube (new GB

Kold-Draft® Service & Parts Manual Rev:3/02

- 22 -

Classic unit) or an extension cord (old GB Classic unit). Consult the factory for

GB Multiplexing Instructions

more information.

9. Install the Ice Chute (see instructions on Page 31), and side cabinet panels. On some early new GB Classic units it may be necessary to crimp the back catches of the side panels on the lower ice maker so the panel is held tight to the frame.

10. Follow start-up instructions to complete the installation.

Section II

Stacking new GB Classic units above old GB Classic units

1. Remove cabinet panels from upper and lower ice makers.

2. Mount inspection panel support angle to top front frame rail of lower (old GB Classic) unit with #8-32 screw, nuts and lock washers provided. (See Illustration "A")

3. Apply gasket (supplied with kit) to the lower ice maker frame and cut to fit. Pierce gasket where it covers the mounting holes. (See Illustration "B")

4. Install (4) 1/4-20 cap screws up through mounting holes of the lower ice maker and secure with (4) nuts.

Kold-Draft® Service & Parts Manual Rev:3/02

- 23 -

5. Position upper ice maker over lower unit and lower in place. Secure with (4)

GB Multiplexing Instructions

nuts. (See Illustration "C") CAUTION: Support upper unit unti l all fasteners are secured.

6. Route upper ice maker bin thermostat capillary tube through grommeted hole in the partition wall, down to the lower ice maker chute opening for positioning. Keep capillary tube toward the front of the partition wall out of the path of falling ice. Stacking a third ice maker will require a bin thermostat with a longer capillary tube. Consult the factory for more information.

7. Install the upper ice maker drain pan and ice chute. Connect the drain hose elbow assembly to the drain pan and route the drain hose through the rear of the lower ice maker. If a 1" dia. hole has not been provided in the rear gusset of the lower ice maker, it will have to be provided by the installer. (See Illustration "D")

8. Install the Ice Chute (see instructions on Page 31), and side cabinet panels.

9. Follow start-up instructions to complete the installation.

Ice Chute Installation

The stainless steel i ce chute provided with 102 1207 01 GB Model Stacking Kits is to be installed in all except the TOP cuber in the stack. See the Ice Chute instal lation instructions on Page 31 for details.

Kold-Draft® Service & Parts Manual Rev:3/02

- 24 -

Section I

GT3XX

Multiplexing Instructions

{ Use a suitable lifting means and be careful of sharp edges.

NOTE: The next Two Sections only apply to GT3XX Cubers, the GT55X Cuber is

NOT stackable

CAUTION: { RISK OF PERSONAL INJURY, PROPERTY DAMAGE, EQUIPMENT FAILURE

OR FIRE. { Refer all maintenance to qualified personnel. { Never operate this equipment with covers, panels or other parts removed or not properly secured.

Stacking new GT3XX Classic units above new GT3XX Classic units

NOTE: Please refer to Section II of these instructions for installing a new GT Classic unit above an old GT Classic unit and Section III for install ing an old Classic (pre-1992 GT400, 500, 600) above a new GT Classic unit.

1. Remove cabinet panels from upper and lower ice makers.

2. Apply gasket (suppli ed with kit) to the lower ice maker frame and cut to fit. (See Illustration "A")

3. Install (4) 1/4-20 cap screws up through mounting holes of the lower ice maker and secure with (4) nuts. (See Illustration "B")

Kold-Draft® Service & Parts Manual Rev:3/02

- 25 -

4. Position upper ice maker over lower unit and lower in place. Inst all lock washers

GT3XX

Multiplexing Instructions

and secure with (4) nuts. (See Illustration "B") CAUTION: Support upper unit until all fasteners are secured.

5. Hang cube gate on lower ice maker cam shaft. (See Illustration "C")

6. Remove the standard drain pan/chute from the upper ice maker and replace with the Multiplex model (supplied with kit). Connect the drain hose to the drai n pan nipple, and route it down so that it spills on the lower ice maker drain pan. Secure the hose with a clamp.

7. Route the upper ice maker bin thermostat capillary tube through the grommetted hole in the right side wall, down to the lower ice maker chute opening for positioning. Keep capillary tube toward the front of the side wall out of the path of falling ice. Stacking a third ice maker will require a bin thermostat with a longer capillary tube. Consult the factory for more information.

Section II

Stacking new GT3XX Classic units above old GT30X Classic units

1. Remove cabinet panels from upper and lower ice makers.

2. Mount inspection panel support angle to top front frame rail of lower (pre-1992 GT Classic) unit with #8-32 screws and nuts provided. (See Illustration "A")

Kold-Draft® Service & Parts Manual Rev:3/02

- 26 -

3. Apply gasket (supplied with kit) to the lower ice maker frame and cut to fit.

GT3XX

Multiplexing Instructions

Pierce gasket where it covers the mounting holes. (See Illustration "B")

4. The new Classic unit drain pan support angle must be modified for use with pre-1992 Classic units. Remove the standard drain pan/chute from the new Classic unit. Locate the notched section of the support angle, clip the tabs and break out of unit. (See Illustration "C")

5. Install (4) 1/4-20 cap screws up through mounting holes of the lower ice maker and secure with (4) nuts.

6. Position upper ice maker over lower unit and lower in place. Inst all lock washers and secure with (4) nuts. (See Illustration "D") CAUTION: Support upper unit until all fasteners are secured.

Kold-Draft® Service & Parts Manual Rev:3/02

- 27 -

7. Hang cube gate on lower ice maker cam shaft. (See Illustration "E")

GT3XX

Multiplexing Instructions

8. Modify the multiplex chute (suppli ed with kit). Carefully separate the chute from the drain pan with an utility knife and discard the chute section. (See Illustration "F")

9. Install drain section in upper ice maker and move to the left side. Install chute (supplied with kit) and position to the right side of the drain pan, under the drain pan lip. (See Illustration "G") Route upper ice maker bin thermostat capillary

Kold-Draft® Service & Parts Manual Rev:3/02

- 28 -

tube through grommetted hole in the partition wall, down to the lower ice maker

GT3XX

Multiplexing Instructions

chute opening for positioning. Keep capillary tube toward the front of the partition wall out of the path of falling ice. Stacking a third ice maker will require a bin thermostat with a longer capillary tube. Consult the factory for more information.

10. Install the side cabinet panel s and follow start-up instructions i ncluded with the ice maker to complete installation.

Section III

Stacking old (pre-1992) GT Classic (GT400, 500, 600) units above

new GT3XX Classic units

1. Remove cabinet panels from upper and lower ice makers.

2. Apply gasket (supplied with kit) to the lower ice maker frame and cut to fit. (See Illustration "A")

3. Install (4) 1/4-20 cap screws up through mounting holes of the lower ice maker and secure with (4) nuts. (See Illustration "B")

Kold-Draft® Service & Parts Manual Rev:3/02

- 29 -

4. To allow for proper mounting, it is necessary to enlarge a 3/16" dia. hole in the

GT3XX

Multiplexing Instructions

bottom of the old GT Classic frame to 5/16" dia. (See Illustration "C")

5. Position upper ice maker over lower unit and lower in place. Install lock washers and secure with (4) nuts. (See Illustration "B") CAUTION: Support upper unit until all fasteners are secured.

6. Hang cube gate on lower ice maker cam shaft. (See Illustration "D")

7. Remove the standard drain pan and chute from the upper ice maker and replace with the plastic drain pan and the multiplex chute. (supplied with kit) Connect the drain hose to the drain pan nipple, and route it down so that it spills on the lower ice maker drain pan. Secure the hose with a clamp.

8. Route the upper ice maker bin prove wire down to the lower ice maker chute opening for positioning. Keep capillary tube toward the front of the side wall, out of the path of falling ice.

Kold-Draft® Service & Parts Manual Rev:3/02

- 30 -

Kold-Draft® Service & Parts Manual Rev:3/02

GB Multiplex Ice Chute Installation Instructions

- 31 -

{

Operational Components

1992 and later models

{

Refer to the specific model wiring diagrams in addition to this text.

{

The following list of components and their functions is common to all models except

as noted in the text.

1. Compressor: All models are provided with a refrigerant compressor which is rated for the electrical and refrigerant characteristics indicated on the Nameplate located on the rear of the cuber.

2. Condenser: All models, except those which use a remote condenser (R), are provided with a self-contained refrigerant condenser, either forced air (A) or liquid (W) cooled, rated for the refrigerant type and pressure indicated on the Nameplate. Remote condenser (R) models are intended for use with remotely-installed forced air-cooled condensers meeting the requirements indicated on the Nameplate.

3. Condenser Fan: Air cooled models (A) are provided with a condenser fan motor and blade combination which have the proper air volume capacity for the refrigeration system and minimum ventilation noise level. Note the installation clearance requirements for each model.

4. Condenser Coolant Regulator Valve: Liquid cooled models (W) are provided with a mechanical valve to regulate the flow of liquid coolant through the condenser. This compensates for variations in the refrigeration load and variations in coolant temperature to provide maximum efficiency. High-side refrigerant pressure determines the valve modulation. Refer to the Controls and Adjustments section for further information.

5. Heat Exchanger, Liquid-to-Suction: All models are provided with a tube-in-tube heat exchanger which should sub-cool the liquid refrigerant approximately 12} F. during the freeze cycle.

Rev:3/02 Kold-Draft® Service & Parts Manual

- 32 -

6. Filter-Drier: All models are provided with a liquid-line filter-drier which is rated

Operational Components

for the refrigerant type and high-side design pressures indicated on the

Nameplate.

7. Thermostatic Expansion Valve (TEV): All models are provided with mechanical TEV's which are suitable for the refrigeration load and the refrigerant type indicated on the Nameplate. GB1220/1240/1250 Dual evaporator models employ two TEV's. See the Controls and Adjustments section for further information.

8. Evaporator: All models are provided with a plated copper evaporator, two evaporators in GB1220/1240/1250 models, which determines the ice cube size which will be produced. Each cube is formed in an individual cell with five freezing surfaces. In order to change the size of ice produced, the evaporator, and possibly the water plate, must be changed. The evaporator(s) is(are) mounted horizontally with the open side down, and ice is harvested by gravity without mechanical assistance. The small holes in part of the top surface allow air in as the ice falls out. Refrigerant is carried by the serpentine coil of plated copper tubing on the top surface of the evaporator.

9. Water Solenoid Valve: Each evaporator/water plate/tank section is provided with a line-voltage solenoid valve which supplies all ice making and rinsing water to the cuber. See the Controls and Adjustments section for details regarding how and when the valve is energized.

10. Hot Gas (Defrost) Valve: All models are provided with a line-voltage hot gas solenoid valve which routes the compressor discharge gas to the evaporator as required, for harvesting ice or for cold-water effect compensation. See the Controls and Adjustments section for details regarding how and when this valve is energized.

11. Liquid Line Solenoid Valve: Remote condenser models (R) are provided with a line-voltage liquid line solenoid valve which is energized only while the 'ICE-OFF-WASH' switch is in the 'ICE' position. The purpose of this valve is to allow the low side to pump down during off periods. See the wiring diagrams and the Control and Adjustments section for details regarding how this valve is controlled.

12. Head Pressure Control Valve (Low Ambient): Remote condenser models (R) are provided with a non-adjustable mechanical pressure regulating valve which closes off the condenser liquid return and bypasses compressor discharge gas to the receiver during cool ambient temperature operation (below 75} F.). During this function, liquid refrigerant floods the condenser coil while the receiver liquid pressure is maintained high enough for effective refrigeration.

REMOTE CONDENSER MODELS ARE NOT FACTORY CHARGED TO THE MAXIMUM AND WILL LIKELY REQUIRE ADDITIONAL REFRIGERANT CHARGE AT INSTALLATION. See the Installation Guidelines section for determining the proper charge and for calculating the additional charge required for the expected lowest ambient temperature operating conditions.

Kold-Draft® Service & Parts Manual Rev:3/02

- 33 -

{

Operational Components

WARNING: RISK OF SERIOUS DAMAGE TO THE COMPRESSOR!

Insufficient refrigerant charge will result in repeated pump-down cycles until the compressor overloads or fails.

13. Harvest Regulator Valve: Remote condenser models (R) are provided with a non-adjustable mechanical pressure regulating valve. The purpose of this valve is to maintain high-side refrigerant mass for adequate heat transfer when the hot gas valve is open, if the discharge pressure falls below 150 psig. This valve only functions as required, and it is not likely to open when the condenser ambient temperature is above 75} F.

14. Quick-Connect Refrigerant Fittings: Remote condenser models (R),

Kold-Draft® remote condensers and Kold-Draft® remote line sets are provided

with re-sealable fittings for refrigerant line connections. Kold-Draft® condensers and line sets are VAPOR-CHARGED only.

15. Strainer-Water Inlet: All models are provided with an in-line potable supply water strainer. This strainer is not intended to remove supply water turbidity, which is inherent to the water supply, but rather to protect the water solenoid valve(s) from damage due to an unusual event, such as follows a water shut-off for plumbing work. If the need for cleaning the strainer is frequent, an external water filter should be provided. The strainer may be cleaned without disassembly of tubing.

16. Receiver-Refrigerant: Liquid cooled (W) and Remote condenser (R) models are provided with receiver tanks, which are rated for the refrigerant charge type, amount and pressures indicated on the Nameplate. Air cooled models (A) do not employ a receiver.

17. Check Valve-Receiver Inlet: Remote condenser models (R) are provided with a check valve at the receiver inlet. The purpose of this valve is to minimize refrigerant backflow to the condenser during harvest and off cycles and to maintain receiver pressure during harvest for proper operation of the harvest regulator valve with low condenser ambient temperatures.

18. Check Valve-Harvest Regulator Valve Inlet: Remote condenser models (R) are provided with a check valve in the supply tubing to the harvest regulator valve. The purpose of this valve is to avoid migration of high-side refrigerant to the liquid line during off cycles, when the high-side pressure is lower than the setting of the harvest regulator valve. Without this check valve, the pumpdown controller (see the Controls and Adjustments section) would not function properly.

19. Check Valve-Hot Gas Line: GB1220/1240/1250 Dual evaporator models are provided with a check valve in the hot gas tubing to the Master (upper) evaporator. The purpose of this valve is to prevent refrigerant migration from the upper to the lower evaporator during freeze cycles, which can occur due to gravity. Frost on the hot gas tubing indicates refrigerant migration from the lower to the upper evaporator, which is due to refrigeration imbalance. See the Service and Troubleshooting section for more details.

Rev:3/02 Kold-Draft® Service & Parts Manual

- 34 -

20. Water Plate: All models are provided with a plastic water plate beneath each

Operational Components

evaporator. The flat top surface of the water plate is provided with holes for injection of water into each evaporator cell and for return of unfrozen water to the water circulation system. This surface forms the sixth surface of the cubes and is spaced from the evaporator so that a thin, uniform web of ice is formed. The cubes are connected together to promote harvest in one or more large sections, rather than individually which would cause excessive melting and require a much longer harvest time.

21. Water Tank: A plastic water tank, or sump, is attached to the bottom of each water plate. The volume of this tank contains enough water for a single batch of ice, along with some excess water to carry away the impurities from the water supply. The impurities are excluded from the ice by the constant circulation during the freezing cycle. Unfrozen water is returned to the tank, from the water plate, during the freeze cycle. The excess water, with concentrated impurities, is drained from the system each cycle along with the fresh water which rinses the water plate while it is opening for harvest.

22. Water Pump: Each evaporator/water plate/tank section is provided with a water pump. The purpose of this pump is to recirculate the ice-making water constantly, through the water plate, during the freeze cycle. The pump does not run during the harvest cycle. All water pumps are designed exclusively for the application electrical requirements and ice maker type (GB/GT) to provide the proper water circulation rate. See the Controls and Adjustments section for details regarding how and when the pump is energized.

Kold-Draft® Service & Parts Manual Rev:3/02

- 35 -

23. Actuator Motor and Cams: The opening and closing of the water plate for

Operational Components

freezing and harvesting cycles is accomplished by the actuator motor. The connection between the actuator motor and water plate is through plastic cams and springs. When the water plate is closed for freezing, the cam lever with the spring attached is in the noon position with the spring slightly stretched, keeping the water plate tight against the cam surface at the motor coupling. See the Service and Troubleshooting section for alignment and adjustments. At the beginning of a harvest cycle, the actuator motor runs counter-clockwise (CCW, facing the cuber) and the cam surface forces the water plate away from the ice. As the motor continues to run, the cam lever travels to the 7 O'Clock position when the motor stops with the water plate open for harvesting the ice. After the ice has been harvested, the actuator motor runs clockwise (CW) to turn the cam levers back to the noon position for the next freeze cycle. CAUTION: Overfreezing, so that more cam force is required to separate the water plate from the ice causes undue component wear. See the Controls and Adjustments and Service and Troubleshooting sections for proper adjustments to avoid this condition.

Rev:3/02 Kold-Draft® Service & Parts Manual

- 36 -

1. Bin Thermostat: The bin thermostat provides power to the 'ICE-OFF-WASH'

Controls and Adjustments

switch. See the GB & GT Cuber Installation Instructions for the proper placement and securing of the bin thermostat capillary tube. Adjustment of this control can be made with the 'ICE-OFF-WASH' switch (see below) in the 'WASH' position to avoid unnecessary compressor cycling. While holding some ice against the end of the capillary tube the cuber should shut down within one minute. Turn the adjustment warmer (CCW) to shut down sooner, or colder (CW) to delay shut down (may be necessary in cool ambients to avoid premature shut down). Ideally, the shut down will occur after the ice has harvested and before the water plate closes. This adjustment should be checked with the ice storage area full and with the unit at typical ambient temperature. Note: The compressor control circuit in remote condenser models (R) is supplied upstream from the bin thermostat in order to allow the low-side pumpdown cycle during off periods.

2. High Temperature Shutoff Thermostat: Before October, 1996 some models were provided with a high temperature shutoff thermostat on the suction line near the compressor inlet. This control provides power to the bin thermostat and to the compressor circuit pressure switches in remote condenser (R) models. If the suction line temperature rises to 130} F. due to a refrigeration problem, such as the hot gas valve mechanically stuck open, power will be shut off to all operating components of the cuber including the compressor in remote condenser models (R). This control will automatically reset when the suction line cools to 110} F., restoring power to the operating components.

3. ICE-OFF-WASH Switch: The 'ICE' position connects power from the bin thermostat to all control circuits, except the compressor circuit in remote condenser (R) models, and to the respective electrical operating components except the compressor motor (and condenser fan motor in self-contained air cooled models) which is (are) powered by the contactor. The 'WASH' position allows all electrical operating components to be powered without the compressor running for in-place cleaning or test procedures (see

Kold-Draft® Service & Parts Manual Rev:3/02

- 37 -

additional details under Pump-Down Controller, Relay-Hot Gas Control and

Controls and Adjustments

Relay-Rinse and Hot Gas Control).

The 'OFF' position (center) interrupts power to all control circuits, except the compressor circuit in remote condenser (R) models, and to the respective electrical operating components.

{

Warning: All cuber circuits are not de-energized when this switch is in the

'OFF' position. Disconnect power to the cuber before servicing.

4. Liquid Level Controller (LLC) and Water Level Probes: A clear plastic tube, which contains three stainless steel probes and indicates the water level in the circulation system, is located at the front of all models. The high and low level probes sense the water shut-off level and harvest initiation level, respectively. The common probe serves as a reference for the high and low level probes since conductivity of low-voltage alternating current (AC) through the water provides the signals. The high level probe de-energizes the water fill circuit when contacted by water. The low level probe initiates harvest (during normal operation) or energizes the water fill circuit (start-up or cleaning cycles when the evaporator is warm) when the level of water is below this probe. Once the water fill has been completed and the water fill circuit has been de-energized, no further changes in the water fill or harvesting operation will be noted until the level is below the low level probe. The LLC input and outputs are line voltage. Note that both normally open (N.O.) and normally closed (N.C.) LLC connections are used. The blue circuit, which powers the harvest initiate and water fill circuits, is connected to common (COM). The black/green main power circuit is connected to the N.O. terminal to power the blue circuit whenever the LLC relay is energized, as during water fill and harvest initiation. The red "defrost" circuit is connected to the N.C. terminal as a fail-safe circuit to avoid water plate lockup in a partially-closed position.

5. Pump and Defrost Switch: The operation of each water pump is controlled by a pump and defrost switch which is actuated by a tab or bolt on the side of the water plate. The pump runs when the water plate is closed, and it stops as the water plate opens. With the water plate open enough so that the pump is not energized, the red circuit, which powers the water plate opening actuator motor winding, is energized. If this switch is not actuated to start the pump before the water plate is completely closed, the actuator motor will repeatedly re-open the water plate. If the water plate closing is obstructed by ice which did not fall off, the springs will stretch so that the cam may continue to rotate, but the water plate tab or bolt cannot actuate the pump and defrost switch and the water plate will re-open to clear the obstruction. This switch must be actuated to start the pump when the spring-end of the front cam is between the 10 and 11 O'clock position while rotating clockwise to close the water plate. If the water plate springs have weakened over time, the water plate will not pull up tightly against the front cam and the pump switch adjustment will be affected. Be sure that the springs are not stretched, then if adjustment is necessary it is made by bending the tab or adjusting the bolt on the water plate. Do not bend the switch lever, but be sure that the tab or bolt engages the switch lever as the water plate closes. The pump and defrost switch in all single evaporator models, and the Master (upper) pump and defrost switch in dual evaporator models manufactured between January, 1992 and March, 1996 is a two-pole switch. The second pole provides power to the water solenoid valve through the black-to-yellow actuator toggle switch circuit to rinse the water plate as it opens for harvest. Rinse will not begin until approximately the same time as the pump stops, and the water

Rev:3/02 Kold-Draft® Service & Parts Manual

- 38 -

solenoid valve will be de-energized as soon as the water plate is fully open only

Controls and Adjustments

during harvest cycles when the actuator thermostat, described later, is

switched cold. Since March, 1996 all single- and dual-evaporator models employ ONLY single-pole pump and defrost switches, and water plate rinse begins immediately upon harvest initiation. See EB#96001 for details.

6. Actuator Thermostat: All models are provided with an actuator thermostat which senses the evaporator temperature. During the freeze cycle the actuator thermostat switches cold (at approx. +26} F. in its coldest adjustment) to set up the electrical circuit for harvest, connecting the blue LLC output (COM), which is not energized until the water level is below the low water level probe, to the red circuit. No change in cuber operation will be evident at this time. After ice has harvested this thermostat switches warm, above 50

}

F., connecting the water plate closing and water fill circuits to the blue LLC output which is energized at that time. Setting the actuator thermostat warmer will keep the water plate open longer after the ice has dropped. Note: At the full warm (CCW) adjustment the actuator thermostat is locked in the cold switch contact position and will not reset warm, to raise the water plate, regardless of evaporator temperature. This control should never be set warmer than necessary to insure that all ice is out of the evaporator(s) before the water plate(s) begin closing.

7. Cold Water Thermostat: All models except GT330/GT340/GT350 series are provided with a cold water thermostat which senses the evaporator temperature along with the actuator thermostat. In self-contained models, (A) or (W) except dual evaporator models (before 9/96), this control connects the hot gas valve to the blue LLC output when it is switched cold or to the red circuit when it is switched warm. The red circuit is energized whenever the water plate is not fully closed, and the blue circuit is energized from harvest initiation until completion of the water fill. The hot gas valve will be energized throughout the harvest cycle and until the water plate is completely closed and thereafter only if the cold water thermostat trips cold during the water fill. Remote condenser models (R), and all dual evaporator models before September, 1996, do not have a red circuit connection to the cold water thermostat, so that the hot gas valve may be de-energized when the water plate is not fully closed but only if the cold water thermostat has reset warm. This allows cycling of the water plate, for example to dump cleaning solutions, without energizing the hot gas valve which would cycle the compressor in remote condenser models (R) due to the low-side pump-down controller, described later. Note: The calibrations of the cold water and actuator thermostats may overlap. When there is no red circuit connection to the cold water thermostat it is necessary to provide a hot gas valve latching circuit until the actuator thermostat switches warm to avoid the possibility of the hot gas valve being de-energized before the water plate begins closing. This circuit is provided by the hot gas control relay, or by the rinse and hot gas control relay in dual evaporator models (before 9/96), described later. The cold water thermostat additionally, acts as a foolproof control in the event that the evaporator temperature decreases very rapidly during the water fill due to very cold supply water, or if the water fill rate is abnormally slow due to inadequate water supply or a restricted filter/strainer, etc. Refer to the Cold Water Thermostat Cycle in the Sequence of Operation

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section for the description of the cold water thermostat function in this case.

Controls and Adjustments

The proper adjustment is usually fully cold (CW). When supply water is very cold, less than 50} F., and ice is being fully-formed (control stream goes over the dam) or when the ice is not cleared from the water plate surface by the rinse water due to water plate surface breakdown (also see Water Plate Service section), the cold water thermostat may be adjusted warmer (CCW). This will provide additional heat to the water, only during the fill cycle, to avoid progressive freezing-up of the water plate which will result in early failure. A warmer setting is recommended for remote condenser models (R) and all dual evaporator models with cold supply water.

8. Actuator Toggle Switch: The travel of the actuator motor in all models is controlled by the actuator toggle switch, which is tripped by a paddle on the motor gearbox output shaft. When the water plate is fully closed, as during the freeze cycle, the switch lever is in the 'up' position. This connects the water plate opening winding of the motor to the red circuit, and also connects the water solenoid valve coil to the water plate rinse circuit. When the water plate is fully open, as during the harvest cycle, the switch lever is in the 'down' position. This connects the water plate closing winding of the actuator motor and the water solenoid valve coil to the warm actuator thermostat circuit, and also connects the red circuit to the black/green main power circuit which powers the fail-safe circuit, described under Liquid Level Controller.

The paddle which trips this switch may be bent slightly to insure that the water plate stops in its widest open position. This is necessary for proper harvest of half-cubes (HK). In dual evaporator models only, the paddle may be bent to provide slight overtravel, toward the 1 O'clock position (not recommended with NEW STYLE Actuator Motors), when the Master (Upper) water plate closes, for a slight additional synchronization time. See additional details under Timer-Master Actuator Motor Delay.

9. Capacitor(s)-Actuator Motor: All actuator motors employ a capacitor between the two windings to determine the direction of rotation when the motor is energized. Models manufactured between approximately 1964 and 5-1-95 employ the OLD STYLE actuator motor which requires a 1.5 mfd. capacitor for this purpose. These motors were all rated 115 Volts, and in 208-240 Volt applications, where an internal transformer was not employed to provide 115 Volts to the actuator motor, a second capacitor in series with the motor winding, white wire, was employed for voltage reduction. The value of the second capacitor was 1.5 mfd. for 220-240 Volt/50 Hz. models, or 2.0 mfd. for 208-230 Volt/60 Hz. models. Models manufactured after 5-1-95 employ a NEW STYLE actuator motor which is rated either 115 Volts or 230 Volts and requires only one capacitor installed between the windings of each motor for direction of rotation. The 115 Volt motor capacitor is rated 4 mfd., and the 230 Volt motor capacitor is rated 1 mfd. Replacement Actuator Motor kits after June, 1995 are provided with only the NEW STYLE actuator motors. Refer to the Service and Troubleshooting section to determine which style is installed and the respective troubleshooting information.

10. Contactor: All models are provided with a contactor which carries the compressor load, and the fan motor load in air cooled models (A). The contactor coil is rated for line-voltage, and the contacts are rated for definite purpose applications (FLA and LRA).

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11. High Pressure Cutoff: All models are provided with a high pressure cutoff

Controls and Adjustments

controller in the compressor discharge line which opens the contactor coil circuit on high-side pressure rise to 400 (435 after December, 1995) psig. The controllers have been MANUAL RESET type since approximately 3-93.

12. Pump-Down Controller: All remote condenser models (R) are provided with a pump down controller in the compressor suction line which opens the contactor coil circuit when the low-side pressure decreases to 5 to 10 psig. The intent of this controller is only to pump the low-side down during off periods, but a shortage of refrigerant in the system will cause it to function during freeze cycles. See the Installation Guidelines for charging requirements for these models.

13. Relay-Hot Gas Control: (Single evaporator remote condenser (R) models, and Relay 2 in Dual evaporator R models beginning in September, 1996) This controller is shown in the ALTERNATE WIRING on the wiring diagrams. Its purpose is to isolate the hot gas valve circuit from the red circuit so that the hot gas valve is not energized any time the water plate is not fully closed unless the actuator or cold water thermostat is switched cold. This allows checking of the actuator motor operation and dumping of cleaning solutions without cycling the compressor due to the pump-down controller with the 'ICE-OFF-WASH' switch in the 'WASH' position. See Cold Water Thermostat for more details.

14. Relay-Rinse and Hot Gas Control: (All Dual evaporator models before September, 1996) This controller serves the same purpose as the hot gas control relay, see above. In addition, it serves to isolate the two actuator motor water plate closing winding circuits from each other and from the water plate rinse circuit to insure water plate synchronization. See Timer-Master Actuator Motor Delay description and Service and Troubleshooting section for more details.

15. Relay-Water Plate Synchronization: (All Dual evaporator models beginning in September, 1996) This relay is designated as Relay 1, and its purpose is to only allow the Slave actuator motor to be energized depending upon the position of the Master actuator motor/toggle switch for more reliable synchronization (see EB #96003).

16. Timer-Master Actuator Motor Delay: (Dual evaporator models, Upper only) This controller is only employed with NEW STYLE actuator motors, after 5-1-95. It delays the starting of the Master (Upper) actuator motor for 2 seconds in either direction during normal ice making operation. The Slave (Lower) actuator toggle switch must be tripped BEFORE the Master in order to properly synchronize the water plates. There is also an interconnection between the actuator motor circuits which stops the Slave motor in the water plate closed position until the Master motor completes closing its water plate. See the Service and Troubleshooting section for more details.

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{

Sequence of Operation

The following sequence begins with the cuber as shipped from the factory with the

Water Plate(s) closed and ready to begin a normal ice making cycle.

WATER FILL CYCLE After about a pint of clean water is added to each water tank (start-up only) with the Bin

Thermostat warm, power is turned on by moving the 'ICE-OFF-WASH' Switch to

either 'ICE' (left side) or 'WASH' (right side) position to observe the water fill cycle. When the Actuator Thermostat is switched warm, Evaporator above +60

}

F., the

Water Solenoid Valve will be energized only until the water level reaches the High Water Level Probe, and the Water Pump will run when the Water Plate is closed.

Note: If the Actuator Thermostat is switched cold (Evaporator temperature is lower

than +26

}

F. or has not risen to above +60

}

F. after a harvest, or if the Thermostat is locked-out in its WARMEST adjustment) the Water Plate will begin to open as soon as power is applied, but the Water Solenoid Valve will not be energized until after the Water Pump stops as the Water Plate opens if the cuber has a double pole pump switch rinse circuit (see Controls and Adjustments section).

Remote Condenser Models (R) Only: The Compressor is connected directly to the line through the High-Pressure Cutoff and the Pumpdown Controller, so the Compressor may cycle with the 'ICE-OFF-WASH' Switch in any position as soon as power is applied.

COLD WATER THERMOSTAT CYCLE (except GT33X/GT34X/GT35X) With the refrigeration unit running ('ICE-OFF-WASH' Switch in the 'ICE' position) the

Evaporator will begin to cool as soon as power is applied. If the Evaporator temperature lowers to approximately 45} F. during the water fill cycle, the Cold Water Thermostat will switch cold and the Hot Gas Valve will be energized until the Evaporator temperature rises above 50

}

F. or until the water fill is completed, then

refrigeration resumes. Note: This is a normal function when the water supply temperature is lower than 50} F.,

however it may occur if the water fill rate is abnormally slow due to low water supply pressure, undersized water supply line, or restricted Water Strainer or external filter. With proper water supply characteristics the water fill should complete in approximately 1 minute for (K) cube or 1-1/2 minutes for (C) or (HK) cube size models.

FREEZE CYCLE

Once the water fill cycle has been completed, the Water Solenoid Valve will remain de-energized until during the following harvest cycle. The Cold Water and Actuator Thermostats switch to their cold contacts as the Evaporator temperature lowers to their settings, however no change in the cuber functions will be noted at these times. The water level in the Liquid Level Probe Tube lowers as the water is frozen, but no additional water will be introduced during the freeze cycle. The Control Stream runs continuously during the freeze cycle with the water returning to the Water Tank through the hole which can be seen through the Control St ream Box to the left of the

Dam in the Box. Note: No water, other than condensation, should dri p or run to the Drain Pan from the

Control Stream or from the Water Tank during the freeze cycle.

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CONTROL STREAM CYCLE

Sequence of Operation

The water level in the Liquid Level Probe Tube must get below the level of the Low Water Level Probe, and both the Cold Water and Actuator Thermostats must have switched cold to initiate the harvest cycl e. If there is an excess of water in the Water Tank, the Water Pump outlet pressure increases when the Evaporator cells are full,

and the Cont rol Stream rises and flows over the Dam to the Drain Pan to evacuate the Liquid Level Control Tube.

Note: The Control Stream is a "safety valve" to insure the ability to initiate harvest rather than an ice quality control, and it should never need to go over the Dam for more than 15 seconds before harvest begins. Setting the Water Level Probes so that the water in the Liquid Level Control Tube gets below the Low Water Level Probe to initiate harvest without the Control Stream running over the Dam, leaving a small "dimple" in the cubes, will result in increased ice making capacity and longer Water

Plate life. HARVEST INITIATION When the water level in the Liquid Level Probe Tube is below the Low Water Level

Probe and the Cold Water and Actuator Thermostats are switched cold, the Liquid Level Control output energizes the blue circuit at the COM terminal. Power is provided

to the Hot Gas Valve through the Cold Water T hermostat, and to the Water Plate opening winding of the Actuator Motor through the Actuator Thermostat and the Actuator Toggle Switch. The Evaporator begins to defrost, and the Water Plate begins to open immediately while the Wat er Pump conti nues to run for a few seconds. The Water Solenoid Valve is not energized until approximately the same time the

Water Pump stops when the Water Pla te is sl ightly open and the Pump and Defrost Switch Lift Tab/Bolt on the side of the Water Plate allows the Switch lever to drop if

the cuber has a double pole pump switch rinse circuit (see Controls and Adjustme nts section). The Water Plate rinse is terminated when the Actuator Toggle Switch is tripped DOWN in the Water Plate OPEN position (see wiring diagrams for full rinse option).

Note: Dual evaporator models require that the Slave (lower) Actuator Toggle Switch be tripped before the Master (upper) in both Actuator Motor directions to insure synchronization. This was accomplished by using a slower motor in the Master until 5-1-95, and by a Delay Timer in the Master motor circuit thereafter. The three-pole

Rinse and Hot Gas Control Relay, or the Water Plate Synchronization Relay in retrofitted per EB #96003 or 9/96 and newer models, isolates the closing windings of

the Actuator Motors from each other. This prevents the Slave Water Plate from beginning to close while the Master Water Plat e finishes opening in the harvest cycle, when the Actuator Thermostat is cold, due to the power in the rinse ci rcuit until the Master is fully open.

HARVEST CYCLE

As long as the Actuator Thermostat remains cold, the Water Plate(s) remain in the open position with the Water Solenoid Valve(s) de-energized. The Hot Gas Valve remains energized, and the Evaporator(s) become warm enough to release the ice which drops by gravity into the ice storage area.

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HARVEST TERMINATION

Sequence of Operation

After the ice is out and the Evaporator(s) warm to the reset temperature of the Actuator Thermostat, up to +60} F., the Actuator Motor(s) will be energized to close

the Water Plate(s), and the Water Solenoid Valve(s) will be energized to begin the water fill for the next ice-making cycle. The Hot Gas Valve always remains energized until the Water Plate is fully closed in all self-contained (A) and (W) models except dual evaporator models prior to 9/96 which have not been retrofitted per EB

#96003. Note: The Hot Gas Control Relay in remote condenser (R) models, or the Rinse and

Hot Gas Control Relay in all pre-9/96 dual evaporator models, allows the Hot Gas Valve to be de-energized as soon as the Cold Water Thermostat switches warm, above +50} F., even before the Water Plate(s) is (are) fully closed, but only after the Actuator Thermostat switches warm and the Water Plate(s) begin closing.

PUMP START As the Water Pla te cl oses, the Lift Tab/Bolt on the Wat er Pla te must raise the Pump

and Defrost Switch lever to start the Water Pump before the Water Plate is fully

closed. The Tab/Bolt should be adjusted so that the Pump starts when the Cam is between 10 and 11 O'clock.

Note: in dual evaporator models, the Slave (lower) Wat e r Plat e is ahead of the Master (upper) Water Plate so that the Slave Pump should start before the Master Pump starts.

CONTINUATION-NORMAL

When the Cam is at the 12 O'clock position, the Paddle on the Actuator Motor output shaft will trip the Actuator Toggle Switch up. If the Water Plat e has completely closed and the Wate r Pump has started, the Actuator Motor will stop with the Water Plat e closed and the cycle will repeat beginning with WATER FILL CYCLE.

Note: Since the Slave (lower) Water Pla te is ahead of the Master (upper) Water Pla te it will be fully closed and trip its Actuator Toggle Switch before the Master Water Plate is fully closed. An interconnection between the Actuator Motors causes the Slave to stop until the Master completes closing and trips its Actuator Toggle Switch. See Actuator Motor in Service and Troubleshooting section for circuit explanations.

ABNORMAL-WATER PLATE RE-OPENS

If the Pump and Defrost Switch is not properly actuated, due to mis-adjustment, weak springs, or an obstruction to the Water Plate travel, such as ice which did not slide off of the plate, the Actuator Motor will immediately reverse and re-open the Water Plate.

Additionally, if the cuber has a double pole pump switch rinse circuit (see Contro ls and Adjustments secti on and EB #96001) should the Wate r Pump start but the rinse pol e of the Pump and Defrost Switch not break, either due to mis-adjustment or to a defective switch, before the Actuator Toggle Switch is tripped, the Water Plate will remain closed until the water fill is completed and then re-open as soon as water touches the High Water Level Probe.

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SHUTDOWN-BIN FULL

Sequence of Operation

When the l evel of ice reaches the Bin Thermostat capillary tube, the ice maker stops automatically, and it remains off until the Bin Thermostat warms up when the ice level is lowered.

Note: In remote condenser models (R), the Compressor continues to run after Bin Thermostat shutdown until the low-side is pumped down to the setting of the Pumpdown Controller. This pressure should be between 5 and 10 psig and must

never be vacuum.

SHUTDOWN-HIGH PRESSURE

All models are provided with a High Pressure Cutoff which interrupts power only to the Compressor, and to the Condenser Fan Motor in air cooled (A) models, when the high-side pressure rises to the cutoff setting. The High Pressure Cutoff requires manual resetting to restore power in all models manufactured after 3-93.

SHUTDOWN-HIGH TEMPERATURE

If the suction line temperature near the Compressor should rise to 130o F in cubers equipped with a High Temperature Shutoff Thermostat (see Controls and Adjustments section), power will be shut off to all operating components of the cuber. This control will automatically reset when the suction line cools to 110o F.

'WASH' CYCLE

All of the cuber's operational components except refrigeration are able to function with the 'ICE-OFF-WASH' Switch in the 'WASH' position. Simply placing thi s Switch in the 'WASH' position does not complete the cleaning and sanitizing of the cuber. The instructions for cleaning are on a label inside the front cabinet panel of the cuber, in the

Preventative Maintenance section of this manual, and in the cuber instructions. Note: The frequency of the need for cleaning is determined by the supply water

characteristics. The cuber should be cleaned no less frequently than once each 6 months, and it may require more frequent cleaning. The requirement for sanitizing frequency may be contained in local health code regulations.

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ACTUATOR MOTOR - DESCRIPTION & TEST PROCEDURE:

Service and Troubleshooting

The actuator motor is a P.S.C. type with two windings in the coil and three power leads. The white wire is common to both windings, and the colored wires are connected to the actuator toggle switch and to a small capacitor. Power is supplied to one winding at a time by the actuator toggle switch, and the capacitor changes the voltage and phase to the other winding to determine the direction of motor rotation. Dual evaporator models are provided with an extra circuit for s ynchronization of the motors which will be described later. Note: There are two different types of actuator motors since May, 1995. The OLD STYLE motor has an end cover which completely covers the windings, and an ex ternal drift stop is required. The NEW STYLE motor does not require the external drift stop, and the coil windings are visible. All OLD STYLE motors are rated 115 volts, and a second capacitor, in series with the common winding lead (white wire), is provided in 208-230 volt/60 hz. (2.0 mfd/240 Vac) and 220-240 volt/50 hz. (1.5 mfd/240 Vac) to reduce l ine voltage to the motor in 1992 and later models which do not have an internal transformer for this purpose. The colored wires are always gray and yellow, and the direction capacitor is always 1.5 mfd/240 Vac. The NEW STYLE (since May, 1995) motors are rated for 115 or for 230 volts and never require two capacitors. The 115 volt NEW STYLE motor colored wires are black and yellow, and the reversing capacitor is 4.0 mfd/250 (or greater) Vac. The 230 volt (50/60 hertz) NEW STYLE motor colored wires are red and yellow, and the reversing capacitor is 1.0 mfd/370 (or greater) Vac.

Only the NEW STYLE actuator motors will be available after June, 1995. Replacement of OLD STYLE with NEW STYLE actuator motors requires adaptation provided with kits for the various applications. Refer to the application list following this text for identification of the kits and wiring instructions. CAUTION: Do not remove the outboard rotor bearings from any NEW STYLE motor. Replacement motor parts (coil, rotor, etc.) are not available, and removal of the bearing may cause damage. Both OLD STYLE and NEW STYLE actuator motors should produce enough output torque so that it is difficult to stall the cam with your finger. if not, the self-aligning bearings may have been jarred out of alignment. Tap on the gearbox with a small hammer or equivalent while the motor is running in both directions to re-align the bearings. It is good practice to do this on every new installation, or with any motor replacement, to correct for mis-alignment due to shipping or handling. OLD STYLE motors are impedance protected to prevent unsafe overheating. These motors will get very hot in the event of a stalled condition or in continuous operation (such as pump switch mis-adjustment with water plate continuously opening and closing), however power to the coil windings is not interrupted by a protective device. NEW STYLE motors are provided with a thermal protector in the windings which will interrupt power if its trip temperature is reached. If a NEW STYLE motor is hot and not running, wait for the motor to cool enough to reset the protector before performing any motor/capacitor tests. If either type motor runs continuousl y, repeatedly tripping the actuator toggle switch, but the water plate does not move, a cam pin is broken or missing. Proper cam travel, viewing the water plate spring connection, is as follows: ƒ Water plate closed, cam stopped at noon position with actuator toggle swit ch lever in the 'up' position.

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ƒ Water plate opening, cam rotates counter-clockwise from noon to 7 O'clock

Service and Troubleshooting

position with the actuator toggle switch lever in the 'up' position. ƒ Water plate fully open, cam stopped at 7 O'clock position with actuator toggle switch lever in the 'down' position. ƒ Water plate closing, cam rotates clockwise from 7 O'clock position to noon position with the actuator toggle switch lever in the 'down' position.

Dual Evaporator Models Only

Dual evaporator cubers are provided with Master (upper) and Slave (lower) ice making sections which must be synchronized for proper operation. In order to synchronize the water plates without repeated opening and closing, the Slave actuator switch must be tripped ahead of the Master actuator switch in both opening and closing the water plates. The method to accomplish this is different between OLD STYLE and NEW STYLE actuators motors, and changes with NEW STYLE motors occurred in

September, 1996. The proper wiring diagram must be used when troubleshooting. CAUTION: Both actuator motors must be the same type - OLD STYLE or NEW

STYLE. OLD STYLE Actuator Motors (Original in GB1224 and GB1225 Models only): The Master (upper) motor is provided with a special rotor to produce a slower output

speed than the Slave (lower) motor. The special rotor is identified by an orange dot on the outboard endplate of the rotor laminations. If the Slave unit is not approximately 4 to 10 seconds ahead of the Master in both directions: ‚ Tap the gearboxes to be sure that the bearings are aligned ‚ Check the drift stop tightness (only very slight pressure between the plastic button and the end of the rotor shaft is needed) ‚ Be sure that the Master motor has the special rotor ‚ Eliminate binding in the cam shaft bearing brackets and/or water plate springs (excessive front bearing bracket shimming will cause binding) ‚ Check the voltage across the motor direction capacitor per the following table if necessary. If all of these items check out the problem is in the gearbox, and motor replacement will be required.

NEW STYLE Actuator Motors:

The Master (upper) and Slave (lower) motors are ident ical and should run at the same speed. A timer is provided in the Master motor circuit to delay the start of this motor for approximately 2 seconds, giving the Slave a head start toward tripping its actuator switch. If the Slave actuator switch is not tripped before the Master, first be sure that the Master time delay is working, then: ‚ Tap the gearboxes to be sure that the bearings are aligned ‚ Eliminate binding in the cam shaft bearing brackets and/or water plate springs ‚ Check the voltage across the motor direction capacitor per the following table if necessary. If these items check out and the Master motor runs faster than the Slave so that it overcomes the delay time and trips its switch ahead of the Slave, swap the motors.

Do not disassemble either motor.

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All Actuator Motors (Dual Evaporator Models):

water plate is fully closed by

preventing it from being energized

before the Master

Service and Troubleshooting

In opening the water plates for harvest with the actuator thermostat switched cold there is no power in the water plate closing circuit, so the water plates will both stop in the fully-open position. However, if the Master (upper) actuator switch is tripped first (see above) the Slave (lower) may stop before its switch is tripped. If so, after harvest the Master will close but the Slave will remain open until the Master closes completely and trips its switch. Then the Master will re-open and the Slave will finish opening then close (pre-9/96), stopping when fully-cl osed until the Master re-closes. This results in wasted cycle time, and the Slave will be overfilled with water, but no damage is caused. In normal harvest operation, both water plates open full y and both actuator switches are tripped to the 'down' position until the actuator thermostat switches warm. Then both water plates begin closing (Master begins closing after time delay with NEW STYLE m otors), the Slave actuator switch is tripped 'up' and the Slave motor stops until the Master finishes closi ng. Both water plates should remain fully closed until the next ice harvest. If not, there may be an obstruction (ice stuck on water plate), or a pump switch may be out of adjustment.

Slave Motor Stopping Circuit:

The Slave (lower) motor stopping circuit before September, 1996 is the black wire from the Slave actuator switch to the yellow Master (upper) actuator motor winding wire. In normal operation, this circuit functions only during the time required to finish closing the Master water plate after the Slave is fully closed. However it can also stall the Slave motor abnormally, as described above, if the Master actuator switch is tripped first in the water plate opening sequence. Following is the circuit rationale: In the normal harvest cycle water pl ate opening sequence with the actuator thermostat switched cold, Relay 1 (Rinse and Hot Gas Control Relay) coil i s not energized. The yellow/orange circuit which powers this coil from the actuator thermostat warm contact also supplies power through the normally open (N.O.) contacts to the yellow and orange Master and Slave, respectivel y, actuator switches for closing the water plates. Therefore both water plates stop fully open for harvest unl ess there is a fault. The red circuit, which powers the actuator motors in water plate opening, is initi ally energized by the LLC (liquid level control) output through the cold actuator thermostat. This circuit may also be energized by either pump and defrost switch (to re-open the water plates in the event of an obstruction, or to dump cleaning solution), and i t is kept energized through either or both actuator switches in the 'down' position. When the Slave actuator switch is tripped 'up' with its water plate fully closed, the red circuit is still energized from the Master actuator switch which has not yet been tripped 'up'. The Slave motor is now being powered in the opening direction, but the closing direction winding is also being powered by the black wire circuit from the yellow Master motor to the Slave actuator switch. With both windings powered from the line, the motor "stalls" in electrical equilibrium. Note: During water plate opening with the actuator thermostat switched warm, such as when dumping cleaning solution or re-opening due to an obstruction, neither water plate should stop in the fully-open position. With NEW STYLE actuator motors the time delay in closi ng is canceled, but the Slave water plate should begin closing before the Master completes opening so that the closing delay is not needed for synchronization. Beginning in September, 1996 Relay 1 is designated as the SYNCHRONIZATION

RELAY, and Relay 2 (HOT GAS CONTROL RELAY) is added ONLY IN REMOTE CONDENSER MODELS as in all single evaporator remote models. Relay 1

prevents the Slave actuator motor from closing its water plate before the Master water plate is fully open, and from opening or re-opening its water plate before the Master

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actuator switch has been tripped to its respective posi tion regardless of evaporator

Service and Troubleshooting

on the white

motor

lead. If power is OK:

Winding open

position, 0 v. in the other position

Winding open

AND>

position, 0 v. in the other position

Change capacitor.

Good

Open

"B" from table

tightness. Change motor if all OK.

temperature. The time delay always occurs before the Master plate begins closing, but not upon re-opening due to an obstruction, etc.).

Between late-1995 and September, 1996 a field-installed circuit modificati on kit was available on an experimental basis. This kit included an additional relay, RELAY 2, and re-wiring of the actuator motor interconnecting circuit. This Relay 2 is different from the September, 1996 changes. No further information regarding this modification is published in this manual. Contact the factory if you have any questions. Kits are available to retrofit older models to the September, 1996 circuits. Refer

to EB #96003 for details.

Actuator Motor Electrical Tests

The following tests are for troubleshooting the actuator motor and related circuits: Use an AC voltmeter set for proper range. Voltages in the tables are measured across the motor reversing capacitor (between the colored motor lead wires). > If there is no i ce in the evaporator(s) and the water plate(s) i s (are) not fully cl osed with the pump(s) running AND the actuator switch(es) tripped UP, the actuator motor(s) should be running. If not, be sure that there is power to the motor(s) and that it (they) is (are) not off due to high temperature (NEW STYLE). Always refer to the proper wiring diagram when troubleshooting. > In dual evaporator models if only one motor appears to be running as it should, be sure that you understand the synchronization circuit (see text). > For OLD STYLE motors in 208-230/60 or 220-240/50 CLASSIC cubers, the voltage between the white motor lead (connected to the voltage reduction capacitor) and the colored lead (gray or yellow) being powered by the actuator switch must be 90 to 130 volts. This varies with li ne voltage, and if not within these li mits the motor(s) may not provide adequate performance. Be sure that the proper capacitor is installed (see text). > Motor winding resistance's at 75o F out of the circuit are as follows: All OLD STYLE motors, white to gray or yellow, approximately 450 ohms. NEW STYLE 115 volt motors, white to black or yellow, approximately 95 ohms. NEW STYLE 230 volt motors, white to red or yellow, approximately 400 ohms.

Voltages for test table below Actuator Motor Style "A" "B" OLD STYLE, ALL 180-240 90-130

RemedyMotorCapacitorVoltage Reading

GoodGood"A" from table

"B" from table in one actuator switch

0 v. in both positions EXCEPT DUAL EVAP. SLAVE DURING NORMAL STALL. Be sure there is power to the motor ("B" from table) by leaving one probe on either capacitor lead and placing the other probe

Kold-Draft® Service & Parts Manual Rev:3/02

Open Good"A" from table in one actuator switch

Shorted

OR>

Both Motor

Windings open

Tap gearcase to align bearings; check cam shaft for binding; check drift stop

Change both motor and capacitor.One Motor Change motor.One Motor Disconnect motor from circuit and

test winding resistance's (see text). If normal, change the capacitor, and if erratic change the motor.

- 49 -

Service and Troubleshooting

"New" 230 V. Actuator Motor Capacitor Styles

There has been a greater than normal number of failures of the actuator motor reversing capacitors employed with NEW STYLE 230 volt actuator motors in dual evaporator cubers. Although this style of capacitor is very convenient, with integral mounting tab and quick-connect terminals, the dual-evaporator cuber application requires a more durable capacitor.

Beginning with production dual evaporator cubers approximately December 1, 1995, followed by 102 1238 02 motor kits and 102 1241 02 replacement capacitor kits, the style of the actuator motor reversing capacitor was changed to an oval tubular capacitor. It has un-insulated axial lead wires and is mounted with a cable tie in place of the original style capacitor. Replacement capacitors will be mounted with the same mounting screw as the original capacitors, and insulation tubing will be provided to insulate the lead wires. The different styles are illustrated below.

Note: This change was never made in factory-production single evaporator cubers. Beginning in September, 1996, a more robust capacitor with terminals (similar to "OLD STYLE" as shown below) was employed in ALL models with NEW STYLE 230 volt actuator motors until Feb., 2001 when the tubular capacitor (“NEW STYLE” as shown below) was re-instated in all dual evaporator cubers, as well as 102 1241 02 replacement capacitor and 102 1238 02 230 volt motor kits.

Actuator Motor Reversing Capacitor Styles for NEW STYLE 230 Volt Actuator Motors

Following are the instructions provided with replacement actuator motor kits for replacing OLD STYLE with NEW STYLE actuator motors. Note that only the OLD STYLE capacitor is shown in the illustrations.

Rev:3/02 Kold-Draft® Service & Parts Manual

- 50 -

Service and Troubleshooting

Actuator Motor Replacement Instructions for

proceeding.

102 1238 01 115 V.-60 Hz. or 102 1238 02 230 V.-50/60 Hz.

This kit contains components for field replacement of old style (prior to May, 1995) actuator motors in all Kold-Draft® cubers.

Additional items may be required to complete installation in some models. Refer to the chart on the last page for additional application information.

CAUTION:

{ RISK OF PERSONAL INJURY, PROPERTY DAMAGE, EQUIPMENT FAILURE OR FIRE.

{ Refer all maintenance to qualified personnel. { Disconnect power before servicing equipment. { Read all instructions and understand your particular model requirements before

Reference Key

Classic: GB421, GB634, GB1224, GT331, etc..., Electronic: GB7-E, GB401, GB603, GB1204, GT301, etc..., Electromechanical: GB2, GB4, GB7, GT1, GS6, GY3, etc...,

Old motor removal

Remove the roll pin or front cam pin to release the actuator motor from the cam. Lower the water plate.

Disconnect the motor and capacitor wiring. Note: if the wire connectors cannot be removed, cut the wires as close to the connectors as possible.

Remove the actuator motor and capacitor(s) from unit.

{

Electronic only: The P.C. card and insulation board must be moved out of the

way, before the actuator motor and C-R-C network can be removed. Disconnect the actuator toggle switch from the C-R-C network.

{

Electromechanical only: Separate the motor conduit from the conduit fitting

on the front channel. This can be done by pulling on the conduit. Note: The conduit fitting on the channel will be used for connecting the replacement motor.

4. If the actuator toggle switch is mounted on the motor, remove the switch from

the switch mounting bracket.

Kold-Draft® Service & Parts Manual Rev:3/02

- 51 -

Service and Troubleshooting

New motor installation

Classic and Electronic only

On these models, the switch is mounted on the motor for actuation by the paddle. Attach the paddle to the actuator shaft using the 1/8" dia. x 3/8" long roll pin provided. Note: GT Classic installations require a different paddle mounting position than the GB Classic/GB-GT Electronic. (See Illustration "A")

Attach Q.C. terminals to the motor wires as shown (OLD STYLE capacitor only).

Position the actuator toggle switch in the new switch support and secure with the

switch nut.

Mount the switch support and the motor mounting bracket to the motor, with (2) #8-32 x 3/8" screws. (See Illustration "B")

Rev:3/02 Kold-Draft® Service & Parts Manual

- 52 -

Service and Troubleshooting

Attach slip-on terminals to actuator toggle switch wires (OLD STYLE capacitor only).

Install the motor/switch assembly in the cuber electrical box. Place the motor shaft through the hole in back of the box, and into the cam hole or shaft extension hole. Align the motor bracket flange holes with the holes in the electrical box, and attach.

{ For the Classic installation, use (2) #8-32 x 3/8" screws and locking nuts. (See Illustration "C"--OLD STYLE capacitor shown)

{

In some Classic applications, the water pump ground wire was connected to a

screw on the old actuator motor. It must be moved to a water valve screw.

Do not loosen any screws on the new actuator motor.

(See Illustration "D"--OLD STYLE capacitor shown)

{

For the Electronic installation, use (2) #8-32 x 1/4" screws.

Kold-Draft® Service & Parts Manual Rev:3/02

- 53 -

Service and Troubleshooting

Note: Illustrations "C" and "D" show locations for mounting the delay timer required for

new motor use in dual evaporator ice makers. This timer is supplied as a separate kit and is only used with the master (upper) motor. Refer to the application chart following these instructions for additional application information.

7. Position the front cam and install the roll pin or front cam pin.

8. Install the capacitor in the cuber electrical box, and make wiring connections.

{

For the Classic installation, locate and drill a 3/16" dia. hole as shown in

Illustration "C". Attach the capacitor and nylon tie with a #8-32 x 1/2" long screw and lock nut. (See Illustration "C")

{

For the Electronic installation, attach the capacitor to the module box with a

#8-32 x 3/8" long screw. Use the existing threaded hole from the C-R-C network. (See Illustration "D") Install insulation tubing over the R-C network leads and connect between the white motor lead and the yellow motor lead. Use the two closed end connectors provided. Note: See Illustration "F" for wiring details (OLD STYLE capacitor shown).

Electromechanical only Installation on Electromechanical models will require a motor cover. This cover is supplied as a separate kit. Refer to the chart on the last page for additional application information.

1. Assemble the actuator motor, motor mounting bracket and motor cover. Feed

the motor wires through the conduit of the cover assembly, and fasten the components with (4) #8-32 x 3/8" long screws. (See Illustration "E")

2. Feed the actuator motor wires through the conduit fitting on the front channel,

and thread the conduit onto the fitting by turning the motor assembly clockwise.

3. Attach Q.C. terminals to the motor wires. (See Ill. "E"--OLD STYLE capacitors).

Rev:3/02 Kold-Draft® Service & Parts Manual

- 54 -

Service and Troubleshooting

4. Position the motor/cover assembly, placing the motor shaft into the cam hole.

Align the motor bracket flange holes with the actuator motor mount holes and attach using (2) #10-32 x 1/2" hex head screws, (2) #10 flat washers and (2) #10-32 lock nuts. (See Illustration "E")

5. Position the front cam and install the front cam pin.

6. Attach Q.C. terminals to the gray and yellow actuator switch wires.

7. The capacitor should be located in the front channel, so that the motor and

switch wires can be connected to it. (See Illustration "F" for wiring schematic) Note: A delay timer is required for new motor use in dual evaporator ice makers. This timer is supplied as a separate kit and is only used with the master (upper) motor. Refer to the chart on the last page for additional application information.

Kold-Draft® Service & Parts Manual Rev:3/02

- 55 -

ACTUATOR MOTOR KIT APPLICATION LIST

Model No.

102 1292 01 115V. 60HZ.

102 1292 02

208/240V.

50/60HZ.

102 1238 01 115V. 60HZ.

102 1238 02

208/240V.

50/60HZ.

102 1239 01 115V. Timer

Kit

102 1239 02

208/230V.

Timer Kit

102 1240 01 Motor Cover

Kit

Classic

GB421, GB431, GB441, GB451, GT551 GB427, GB434, GB437, GB444, GB447,

GB454, GB457, GB624, GB627, GB634, GB637, GB644, GB647, GB654, GB657, GT554, GT557

GB1224, GB1225, GB1244, GB1245, GB1254, GB1255, GB1257, GB1258

GT331, GT341, GT351 GT334, GT337, GT344, GT347, GT354,

GT357

2-Required

Electronic

GB401, GB402, GB406, GB503, GB603, GT301, GT306, GT401, GT402, GT406, GT503, GT603, IS401, IS503

GB903, GB1003, GB1204, GB1205 2-Required GB407, GB507, GT307, GT407, GT507,

IS507 GB1208 2-Required

Electro-mechanical

GB1, GB2, GB5, GB7, GS6, GT1, GT7, GT8, GY3, IS1, IS5, IS7, MD1, MD5

GB4 2-Required 2-Required GB1F, GB7F, GS6F, GT1F, GT7F,

GY3F, IS7F

Other

T175 crusher, TKN2 agitator, AKD agitator

Service and Troubleshooting

WATER PLATE

Too little ice web thickness (spacing between the evaporator and the water plate) or incorrect alignment of the water plate and evaporator may cause icing of injection and return holes on the water plate surface. Refer to water plate alignment drawing.

If water injection holes on the water plate become blocked with scale, some of the freezing cells will be void of ice at time of harvest. This condition may be cured by using a 1/16" drill bit to clean the injection holes with care not to scratch the water plate surface. Empty cells may collapse due to expansion of ice in adjacent cells.

If the holes are cleaned and no water flows through them to form ice in the cells, the lateral conduits have become clogged. To clean the laterals, remove the plugs at the right end of the water plate. Run a small brush through the laterals and flush out the foreign material. When replacing the plugs use new ones as the old ones have aged and may not seal properly. To replace a plug, push it in with an Allen wrench or similar blunt end tool. This stretches the plug so it will be tight when the tool is removed.

Kold-Draft® Service & Parts Manual Rev: 3/02

57 -

Service and Troubleshooting

A crack in the lateral strip on the underside of the water plate may prevent the control stream from rising and going over the dam. This could extend the freeze cycle and freeze ice into the water plate. If this occurs, the water plate should be replaced.

In some areas where water is unusually pure with practically no dissolved solids, the water plates may require fairly frequent applications of Kold-Draft water plate spray in order to prevent excessive ice adherence. Where water conditions cause ice to stick to the water plate, treatment is recommended every three months, or whenever cuber is cleaned or serviced. Decreasing the water fill level, so that harvest occurs without control stream function, may also be recommended.

KOLD-DRAFT WATER PLATE SPRAY APPLICATION:

1. Defrost the unit by pulling down on the water plate. With the "ICE-OFF-WASH" switch pressed to "WASH", allow the water tank to refill and circulate for a few minutes to melt off any accumulated ice. Open the plate to dump out the water.

2. Turn off the power with water plate open. Wipe water drops off evaporator and with several rags, and wipe the water plate as dry as possible.

3. Apply KOLD-DRAFT Water Plate Spray (55R-01052) to the water plate being sure to avoid the last half-inch along the right side. If the coating gets on this edge, the rinse water will run off into the bin during harvest.

4. Allow the coating to dry as long as practical, then buff the surface with soft cloth.

5. Turn on the power and press the "ICE-OFF-WASH" switch to "ICE".

REMOVAL OF WATER PLATE AND TANK ASSEMBLY:

1. Turn off the water and allow the plate to close; then turn off power.

2. Remove the control stream drain hose.

3. Remove the water level probe assembly by sliding it to the right beyond the control stream box and lift. Disconnect the tube assembly from the main tank.

4. Remove the pump mounting screws and the inlet and outlet hoses from the pump. Separate the pump from the front hinge and position out of the way.

5. Run the cams down to the 7 o'clock position (water plate open). Unhook the springs from the water plate.

6. Carefully pry the plastic hinges away from the plate.

7. Move the water plate and tank assembly to the right and forward out of the cuber. This may be facilitated by removing the drain pan and ice chute.

WATER PLATE REPLACEMENT:

1. Remove the spring bosses, water pump brace, water deflector, stainless steel wear plates, and water tank from the old water plate.

2. Remove the pump switch lift tab from the shoulder on the water plate and install in the new water plate.

3. Attach the tank to the new water plate and attach the stainless wear plates, water deflector, water plate brace and spring bosses. Be sure not to strip the plastic threads when tightening the boss bolts.

Rev: 3/02 Kold-Draft® Service & Parts Manual

- 58 -

Service and Troubleshooting

RE-INSTALLING THE WATER PLATE AND TANK ASSEMBLY:

1. With the open end of the water plate to the right, slide it back into the cuber and to the left of its normal position.

2. Connect the springs to the water plate, front spring first. Place open end of spring loop into the boss groove and pull spring into position.

3. Hook on the plastic hinge brackets, and snap in place.

4. Re-position the water pump, align water pump brace with lower hole and secure with mounting screws. Install the inlet and outlet hoses to the pump. When installing the pump to tank hose, it is usually easier to put it on the tank first with one finger inside the hose. Slide the hose onto the pump connection taking care to avoid any twist or kink. The hoses will slide on easier if wet.

5. Reinstall the water level probe assembly and control stream drain hose.

6. Close water plate, making sure it is aligned and clears the thermostat bulb well on the front of the evaporator.

LIQUID LEVEL CONTROLLER The liquid level controller (P.C. card and probes) is described in the Controls and Adjustments section. It is important to remember that this control does not directly

energize the water fill solenoid valve while the actuator thermostat is switched cold. Water plate rinse during harvest is powered through the actuator switch only while the water plate is opening, and rinse flow stops when the water plate is fully open. Water fill begins when the actuator thermostat switches warm, after ice harvests, and the water plate begins to close.

The control circuit senses minute electrical conductivity through the water between the probes. Even very pure water is somewhat conductive and changing the sensitivity adjustment from mid-range should not be required.

Although the probe terminals (Low, High, Com) at the top of the Card operate at low voltage (12 volts), all other Card terminals carry line voltage (115 to 230 volts) with the obvious potential for electrical shock. Do not allow the Card to get wet, and use caution when checking voltages.

Before testing the water level control, be sure that: >There is line voltage at the INPUT terminals; >The control switch is in the "WASH" position; >The water supply is ON; >The water plate is fully closed with the pump switch held up; >There is no ice in the evaporator (actuator thermostat "WARM").

CONTROLLER TEST PROCEDURE:

The water valve should be energized if none of the probes are contacting water. If the valve won't open, measure the voltage at the valve coil. If zero volts, check for possible conductive path through water or mineral deposits on the control tube cap. If still

Kold-Draft® Service & Parts Manual Rev: 3/02

59 -

Service and Troubleshooting

zero, check control output between "N.O." terminal and the brown, blue or white input wire. Replace control if line voltage is not measured between these points.

If the water valve shuts off when the water level reaches the lower probe, check for reversed probe connections on the control. If not, then replace the control.

If the water valve does not shut off when the water level reaches the high level probe, press the "ICE-OFF-WASH" switch to "OFF" to check the valve for mechanical solenoid valve failure. Verify that the water supply is adequate, and if so repair or replace the solenoid valve if water flow does not stop with control switch in the "OFF" position.

If the valve closes with the switch in the "OFF" position, press the switch to "WASH", unplug the "COM" probe then short between the "COM" and "HIGH" probe terminals on the card. The on-card relay should cycle (view the contacts) each time these terminals are shorted and opened; if not, replace the control.

If the relay cycles but the water valve won't close, check the control output (bottom terminals) wire connections against the wiring diagram to be sure that the wiring is correct before replacing the control.

If the probe reaction time is erratic, try cleaning the probes and/or adjusting the sensitivity adjustment CW.

When replacing the control, be sure that a 115V control (P/N 102120601) is used in 115V Cubers and that a 230V control (P/N 102114201) is used in 230V Cubers. The controls are not interchangeable! Check the label on the controller relay for the

correct operating voltage. DUAL EVAPORATOR MODEL NOTE: If Master and Slave water fill level difference is

greater than 1/4" for "K" or 1/8" for "C" or "HK" cubes, and no defect is found in the controller circuit, be sure that the water supply pressure is adequate (minimum 20 psig, dynamic) and that strainers, filters or valves are not causing restriction. If not, one of the solenoid valves is defective or the wrong valve is installed. Water fill should be completed within 1 1/2 minutes for GB "K", 2 minutes for GB "C" or "HK", 1 minute for GT3 "K", or 1 1/2 minutes for GT3 "C" or "HK", after the water plate(S) begins closing.

CUBE QUALITY

Proper adjustment of the control stream and water level probes will produce ice cubes containing a 1/8" to 3/16" dimple. Oversized dimples may be caused by insufficient water fill, control stream set too high and/or a leak in the water circulation system. Undersized dimples are caused by overfilling, control stream set too low and/or mis-adjustment of the low level probe.

Rev: 3/02 Kold-Draft® Service & Parts Manual

- 60 -

Service and Troubleshooting

Cubes which are solid in one part of the evaporator while hollow in another may be caused by clogged water plate laterals or water plate injection holes, an incorrect refrigerant charge and/or mis-adjusted TEV.

Start-up cycles may exhibit supercooling of the circulating water resulting in the formation of slush in the circulation system which may reduce or shut off the flow of water at the control stream momentarily. This is not a problem unless the control stream rises above the dam when full circulation resumes after the system is fully warmed up (3 cycles, minimum) and all the cabinet panels are installed. The symptoms of this abnormal condition may be excessively large, uniform holes in cubes and/or refilling with water, usually along with hot gas due to the cold water thermostat, within about 5 minutes after freeze cycle begins. If lowering the control stream adjustment to avoid the abnormal loss of water over the dam does not help consistently, try increasing the TEV superheat adjustment 1/4 to 1/2 turn.

Kold-Draft® Service & Parts Manual Rev: 3/02

61 -

(Tecumseh) 1998 Retrofit(R-502/R-404a) 1995 Retrofit,Equipment Original

Compressor Chart

DescriptionPart No.DescriptionPart No.DescriptionPart No.ItemModel

AKA9451ZXA*102 1242 11M61B542BBAB*102 1242 01M51B542BBAB102 1191 08CompressorGT331

---102 1047 09---102 1047 04---102 1047 04Start Relay(115/60)

72-88/250102 1195 08145-175/250102 1195 03145-175/250102 1195 03Start Capacitor

25/370102 1197 0415/370102 1044 0115/370102 1044 01Run Capacitor

---102 1198 02---Internal---InternalOverload

AKA9451ZXD*102 1242 12M61B542BBCB102 1191 19M51B542BBCB102 1191 11CompressorGT334

---102 1047 06---102 1047 06---102 1047 06Start Relay(208-230/60)

72-88/330102 1195 02108-130/250102 1195 06108-130/250102 1195 06Start Capacitor

15/370102 1044 0115/370102 1044 0115/370102 1044 01Run Capacitor

---102 1198 08---Internal---InternalOverload

AKA9451ZXC*102 1242 13------M51B872BBKB102 1191 04CompressorGT337

---102 1047 10---------102 1047 03Start Relay(220-240/50)

72-88/330102 1195 02------88-108/250102 1196 01Start Capacitor

15/370102 1044 01------25/370102 1197 04Run Capacitor

---102 1198 04---------InternalOverload

AKA9451ZXA*102 1242 11------M61B542BBAB102 1191 16CompressorGT341

---102 1047 09---------102 1047 04Start Relay(115/60)

72-88/250102 1195 08------145-175/250102 1195 03Start Capacitor

25/370102 1197 04------15/370102 1044 01Run Capacitor

---102 1198 02---------InternalOverload

AKA9451ZXD*102 1242 12------M61B542BBCB102 1191 19CompressorGT344

* Indicates compressor retrofit kit including start relay, capacitors, filter-drier, and retrofit parts as required for some models.

Kold-Draft Service & Parts Manual Rev.3/02

---102 1047 06---------102 1047 06Start Relay(208-230/60)

72-88/330102 1195 02------108-130/250102 1195 06Start Capacitor

15/370102 1044 01------15/370102 1044 01Run Capacitor

---102 1198 08---------InternalOverlaod

AKA9451ZXC*102 1242 13------M65B802BBKB102 1191 14CompressorGT347

---102 1047 10---------102 1047 07Start Relay(220-240/50)

72-88/330102 1195 02------145-175/250102 1195 03Start Capacitor

15/370102 1044 01------25/440102 1197 01Run Capacitor

---102 1198 04---------InternalOverload

- 62 -

(Tecumseh) 1998 Retrofit,(R-502/R-404a) 1995 Retrofit,Equipment Original

Compressor Chart

DescriptionPart No.DescriptionPart No.DescriptionPart No.ItemModel

------------AKA9451ZXA102 1191 24CompressorGT351

---------------102 1047 09Start Relay(115/60)

------------72-88/250102 1195 08Start Capacitor

------------25/370102 1197 04Run Capacitor

---------------102 1198 02Overload

------AKA9451ZXD102 1191 32CompressorGT354

---------------102 1047 06Start Relay(208-230/60)

------------72-88/330102 1195 02Start Capacitor

------------15/370102 1044 01Run Capacitor

---------------102 1198 08Overload

------------AKA9451ZXC102 1191 25CompressorGT357

---------------102 1047 10Start Relay(220-240/50)

------------72-88/330102 1195 02Start Capacitor

------------15/370102 1044 01Run Capacitor

---------------102 1198 04Overload

------------AKA9462ZXA102 1191 21CompressorGT551

---------------102 1047 09Start Relay(115/60)

------------72-88/250102 1195 08Start Capacitor

------------25/370102 1197 04Run Capacitor

---------------102 1198 03Overload

102 1191 01CompressorGB421

102 1192 01CompressorGB427

RSU5-0050-IAA

RSU5-0050-IAZ

AKA9455ZXA*102 1242 15M65B802BBAB*102 1242 02

---102 1047 09---102 1047 04---102 1048 01Start Relay(115/60)

72-88/250102 1195 08189-227/330GBR-02353-02270-324/165GTR-00373-02Start Capacitor

25/370102 1197 0420/370GBR-01385-0315/370102 1044 01Run Capacitor

---102 1198 06---Internal---102 1198 01Overlaod

AKA9462ZXC*102 1242 17M65B802BBKB*102 1242 04

---102 1047 11---102 1047 07---102 1194 01Start Relay(220-240/50)

72-88/330102 1195 02145-175/250102 1195 0343-52/330102 1195 01Start Capacitor

15/370102 1044 0125/440102 1197 01------Run Capacitor

---102 1198 05---Internal---102 1199 01Overload

* Indicates compressor retrofit kit including start relay, capacitors, filter-drier, and retrofit parts as required for some models.

Kold-Draft Service & Parts Manual Rev.3/02

- 63 -

(Tecumseh) 1998 Retrofit, (R-502/R-404a) 1995 Retrofit,Equipment Original

Compressor Chart

DescriptionPart No.DescriptionPart No.DescriptionPart No.ItemModel

AKA9455ZXA*102 1242 15M65B802BBAB*102 1242 02M51B872BBAB102 1191 03CompressorGB431

---102 1047 09---102 1047 04---102 1047 04Start Relay(115/60)

72-88/250102 1195 08189-227/330GBR-02353-02145-175/250102 1195 03Start Capacitor

25/370102 1197 0420/370GBR-01385-0315/370102 1044 01Run Capacitor

---102 1198 06---Internal---InternalOverload

AKA9455ZXD*102 1242 18M65B802BBCB102 1191 20M51B872BBCB102 1191 10CompressorGB434

---102 1047 06---102 1047 08---102 1047 02Start Relay(208-230/60)

72-88/330102 1195 02161-193/250102 1195 05108-130/250102 1195 06Start Capacitor

15/370102 1044 0125/440102 1197 0115/370102 1044 01Run Capacitor

---102 1198 07---Internal---InternalOverload

AKA9462ZXC*102 1242 17M65B802BBKB*102 1242 04M51B872BBKB102 1191 04CompressorGB437

---102 1047 11---102 1047 07---102 1047 03Start Relay(220-240/50)

72-88/330102 1195 02145-175/250102 1195 0388-108/250102 1196 01Start Capacitor

15/370102 1044 0125/440102 1197 0125/370102 1197 04Run Capacitor

---102 1198 05---Internal---InternalOverload

AKA9455ZXA*102 1042 15------M65B802BBAB102 1191 13CompressorGB441

---102 1047 09---------102 1047 04Start Relay(115/60)

72-88/250102 1195 08------189-227/330GBR-02353-02Start Capacitor

25/370102 1197 04------20/370GBR-01385-03Run Capacitor

---102 1198 06---------InternalOverload

AKA9455ZXD*102 1242 18------M65B802BBCB102 1191 20CompressorGB444

* Indicates compressor retrofit kit including start relay, capacitors, filter-drier, and retrofit parts as required for some models.

Kold-Draft Service & Parts Manual Rev.3/02

---102 1047 06---------102 1047 08Start Relay(208-230/60)

72-88/330102 1195 02------161-193/250102 1195 05Start Capacitor

15/370102 1044 01------25/440102 1197 01Run Capacitor

---102 1198 07---------InternalOverlaod

AKA9462ZXC*102 1242 17------M65B802BBKB102 1191 14CompressorGB447

---102 1047 11---------102 1047 07Start Relay(220-240/50)

72-88/330102 1195 02------145-175/250102 1195 03Start Capacitor

15/370102 1044 01------25/440102 1197 01Run Capacitor

---102 1198 05---------InternalOverload

- 64 -

(Tecumseh) 1998 Retrofit, (R-502/R-404a) 1995 Retrofit,Equipment Original

Compressor Chart

DescriptionPart No.DescriptionPart No.DescriptionPart No.ItemModel

------------AKA9455ZXA102 1191 28CompressorGB451

---------------102 1047 09Start Relay(115/60)

------------72-88/250102 1195 08Start Capacitor

------------25/370102 1197 04Run Capacitor

---------------102 1198 06Overload

------------AKA9455ZXD102 1191 31CompressorGB454

---------------102 1047 06Start Relay(208-230/60)

------------72-88/330102 1195 02Start Capacitor

------------15/370102 1044 01Run Capacitor

---------------102 1198 07Overload

------------AKA9462ZXC102 1191 29CompressorGB457

---------------102 1047 11Start Relay(220-240/50)

------------72-88/330102 1195 02Start Capacitor

------------15/370102 1044 01Run Capacitor

---------------102 1198 05Overload

102 1193 01CompressorGB624

102 1191 02CompressorGB627

102 1191 05CompressorGB634

RSL5-0100-CAV

RSL5-0101-PFJ

M51B123BBCB

*102 1242 03

*102 1042 03

M65B133BBC

M65B133BBCB

AWA7512ZXD*102 1242 14

---102 1047 13---102 1047 05---GBR-01385-01Start Relay(208-230/60)

130-156/330102 1195 09161-193/250102 1195 0588-108/250102 1196 01Start Capacitor

35/370102 1197 0225/440102 1197 0125/440102 1197 01Run Capacitor

---Internal---Internal---102 1200 01Overload

AWA7512ZXC*102 1242 16M65B133BBKB*102 1242 05

---102 1047 12---102 1047 03---GBR-01385-01Start Relay(220-240/50)

88-108/330102 1195 10124-149/250102 1195 0472-86/330102 1195 02Start Capacitor

35/370102 1197 0220/370GBR-01385-0335/370102 1197 02Run Capacitor

AWA7512ZXD*102 1242 14

---102 1047 13---102 1047 05---102 1047 02Start Relay(208-230/60)

130-156/330102 1195 09161-193/250102 1195 05124-149/250102 1195 04Start Capacitor

35/370102 1197 0225/440102 1197 0120/370GBR-01385-03Run Capacitor

AWA7512ZXC*102 1042 16M65B133BBKB*102 1242 05M51B143BBKB102 1191 06CompressorGB637

---102 1047 12---102 1047 03---102 1047 03Start Relay(220-240/50)

88-108/330102 1195 10124-149/250102 1195 04124-149/250102 1195 04Start Capacitor

35/370102 1197 0220/370GBR-01385-0320/370GBR-01385-03Run Capacitor

* Indicates compressor retrofit kit including start relay, capacitors, filter-drier, and retrofit parts as required for some models.

Kold-Draft Service & Parts Manual Rev.3/02

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(208-230/60/3)

Compressor Chart

(208-230/60/3)

(Tecumseh) 1998 Retrofit,(R-502/R-404a) 1995 Retrofit,Equipment Original

DescriptionPart No.DescriptionPart No.DescriptionPart No.ItemModel

102 1191 09CompressorGB644

M65B133BBCB

AWA7512ZXD*102 1242 14------

---102 1047 13---------102 1047 05Start Relay(208-230/60)

130-156/330102 1195 09------161-193/250102 1195 05Start Capacitor

35/370102 1197 02------25/440102 1197 01Run Capacitor

AWA7512ZXC*102 1242 16------M65B133BBKB102 1191 15CompressorGB647

---102 1047 12---------102 1047 03Start Relay(220-240/50)

88-108/330102 1195 10------124-149/250102 1195 04Start Capacitor

35/370102 1197 02------20/370GBR-01385 03Run Capacitor

------------AWA7512ZXD102 1191 26CompressorGB654

---------------102 1047 13Start Relay(208-230/60)

------------130-156/330102 1195 09Start Capacitor

------------35/370102 1197 02Run Capacitor

------------AWA7512ZXC102 1191 27CompressorGB657

---------------102 1047 12Start Relay(220-240/50)

------------88-108/330102 1195 10Start Capacitor

------------35/370102 1197 02Run Capacitor

GBR-02353CompressorGB1224

M53A273BBCA

*102 1242 06

M66A243BBCA

AVA7524ZXN*102 1242 09

---102 1047 04---GBR-02353-01---GBR-02353-01Start Relay(208-230/60/1)

130-156/330102 1195 09161-193/250102 1195 05189-227/330GBR-02353-02Start Capacitor

45/440102 1197 0640/440102 1197 0535/440GBR-01395-05Run Capacitor

102 1191 12CompressorGB1225

102 1191 17CompressorGB1244

M53A273DBDA

M66A243BBCA

102 1191 18

M66A243DBDA

AVA7524ZXT*102 1242 10

AVA7524ZXN*102 1042 09------

---102 1047 04---------GBR-02353-01Start Relay(208-230/60/1)

130-156/330102 1195 09------161-193/250102 1195 05Start Capacitor

45/440102 1197 06------40/440102 1197 05Run Capacitor

102 1191 18CompressorGB1245

M66A243DBDA

AVA7524ZXT*102 1242 10------

* Indicates compressor retrofit kit including start relay, capacitors, filter-drier, and retrofit parts as required for some models.

Kold-Draft Service & Parts Manual Rev.3/02

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(Tecumseh) 1998 Retrofit,(R-502/R-404a) 1995 Retrofit,Equipment Original

Compressor Chart

DescriptionPart No.DescriptionPart No.DescriptionPart No.ItemModel

102 1191 23CompressorGB1255

(208-230/60/3)

* Indicates compressor retrofit kit including start relay, capacitors, filter-drier, and retrofit parts as required for some models.

AVA7524ZXT

------------AVA7524ZXN102 1191 22CompressorGB1254

---------------102 1047 04Start Relay(208-230/60/1)

------------130-156/330102 1195 09Start Capacitor

------------45/440102 1197 06Run Capacitor

------------

------------AKA9462ZXD102 1191 33CompressorGT554

---------------102 1047 14Start Relay(208-230/60)

------------72-88/330102 1195 02Start Capacitor

------------15/370102 1044 01Run Capacitor

---------------102 1198 07Overload

Kold-Draft Service & Parts Manual Rev.3/02

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Wiring Diagrams

SEE ENG. BULLETIN #96001 FOR WIRING UPGRADE

Kold-Draft® Service & Parts Manual Rev:3/02

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Wiring Diagrams

SEE ENG. BULLETIN #96001 FOR WIRING UPGRADE

Rev:3/02 Kold-Draft® Service & Parts Manual

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Wiring Diagrams

SEE ENG. BULLETIN #96001 FOR WIRING UPGRADE

Kold-Draft® Service & Parts Manual Rev:3/02

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Wiring Diagrams

SEE ENG. BULLETINS #96001, 96003, & 97001 FOR WIRING UPGRADES

Rev:3/02 Kold-Draft® Service & Parts Manual

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Wiring Diagrams

SEE ENG. BULLETINS #96001, 96003, & 97001 FOR WIRING UPGRADES

Kold-Draft® Service & Parts Manual Rev:3/02

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Wiring Diagrams

SEE ENG. BULLETINS #96001, 96003, & 97001 FOR WIRING UPGRADES

Rev:3/02 Kold-Draft® Service & Parts Manual

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Wiring Diagrams

SEE ENG. BULLETINS #96001, 96003, & 97001 FOR WIRING UPGRADES

Kold-Draft® Service & Parts Manual Rev:3/02

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Wiring Diagrams

SEE ENG. BULLETIN #96001 FOR WIRING UPGRADE

Rev:3/02 Kold-Draft® Service & Parts Manual

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Wiring Diagrams

SEE ENG. BULLETIN #96001 FOR WIRING UPGRADE

Kold-Draft® Service & Parts Manual Rev:3/02

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Wiring Diagrams

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Wiring Diagrams

Kold-Draft® Service & Parts Manual Rev:3/02

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Wiring Diagrams

SEE ENG. BULLETINS #96003, & 97001 FOR WIRING UPGRADES

Rev:3/02 Kold-Draft® Service & Parts Manual

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Wiring Diagrams

SEE ENG. BULLETINS #96003, & 97001 FOR WIRING UPGRADES

Kold-Draft® Service & Parts Manual Rev:3/02

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Wiring Diagrams

SEE ENG. BULLETIN #97001 FOR WIRING UPGRADE

Rev:3/02 Kold-Draft® Service & Parts Manual

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Wiring Diagrams

SEE ENG. BULLETIN #97001 FOR WIRING UPGRADE

Kold-Draft® Service & Parts Manual Rev:3/02

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Wiring Diagrams

Rev:3/02 Kold-Draft® Service & Parts Manual

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Wiring Diagrams

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Wiring Diagrams

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Wiring Diagrams

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Wiring Diagrams

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WiringDiagrams

New 5/16/03

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Wiring Diagrams

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WiringDiagrams

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Wiring Diagrams

New 5/16/03

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Wiring Diagrams

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WiringDiagrams

Kold-Draft®Service & Parts Manual Rev:3/02

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T-25X/T-26X Crusher Installation Instructions

CHECK FOR FREIGHT DAMAGE BEFORE PROCEEDING: Even though damage to the carton may not have been evident, check for hidden damage and contact freight carrier immediately if necessary to file a claim.

THIS EQUIPMENT MUST BE INSTALLED IN COMPLIANCE WITH THE APPLICABLE FEDERAL, STATE/PROVINCE AND/OR LOCAL PLUMBING, ELECTRICAL AND HEALTH/SANITATION CODES AND REQUIREMENTS.

CAUTION:

{

RISK OF PERSONAL INJURY, PROPERTY DAMAGE, EQUIPMENT FAILURE OR FIRE.

{

Refer all maintenance to qualified personnel.

{

Never operate this equipment with covers, panels or other parts removed or not properly secured.

{

Warn all users to clean up spillage immediately, keep storage bin doors closed, and report any apparent leakage or unusual sounds to maintenance

personnel.

Installation

NOTE: Refer to ice cuber instructions before proceeding.

1. Position the ice storage bin maintaining the minimum clearances specified in the cuber instructions.

Rev:3/02 Kold-Draft

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Service & Parts Manual

T-25X/T-26X Crusher Installation

2. Level the bin with adjusters on legs, or by shimming if the bin is to sealed to the floor. If gaps due to shims are greater than 1/8 inch, install a cove molding around the bin bottom. Seal the bin or molding to the floor with NSF Certified RTV sealant (Dow-Corning RTV 732 or equal).

3. Install gasketing on top of bin if required. Gasket material must be positioned so that it extends to the outside edge of the perimeter of the crusher chassis when the crusher is in place.

4. CAREFULLY lift the crusher out of the carton and place onto the gasketed bin. Remove the front cover and note the alignment of the mounting holes in the chassis if mounting means are provided on the bin. Follow the bin installation instructions for securing the crusher to the bin. (NOTE: The selector knob must be removed before the front cover can be removed.)

CAUTION:

{

RISK OF PERSONAL INJURY OR EQUIPMENT DAMAGE.

{

Use a suitable lifting means and be careful of sharp edges.

5. Electrical and drain locations are shown below. All dimensions are in inches.

6. If a knockout is not provided, punch an 1-3/32 inch dia. hole in the ice maker condensing unit pan for the crusher control wiring. (See Illustration "A")

Kold-Draft® Service & Parts Manual Rev:3/02

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T-25X/T-26X Crusher Installation Instructions

7. Install gasketing on top of crusher. (See Illustration "B")

8. Remove the cuber cabinet panels, lift and position cuber on top of gasketed

crusher and align mounting holes. Install cap screws, lockwashers and nuts. (See Illustration "C") CAUTION: Support cuber until all fasteners are secured.

9. The crusher is designed to operate in conjunction with one or two Kold-Draft

cubers. Two motor control relay blocks are provided and a relay coil must be installed for each cuber used. Each relay coil must have a voltage rating matching the voltage of the ice cuber, regardless of the crusher motor voltage. The relay coils are installed through the opening in the control box, by the installer, and are ordered separately. A third relay is provided for controlling one or two cubers with the same set of bin thermostats. This relay coil voltage rati ng is matched to the crusher motor voltage and is provided with the crusher.

10. A dual safety switch system is employed in the crusher design to break the

circuit to the motor. If either the front panel of the crusher or the front panel of the bottom ice maker is removed, a switch will open the motor circuit. The crusher safety switch is mounted in the crusher control box. The ice maker safety switch

CAUTION:

{

The safety switches DO NOT de-energize all circuits in the crusher or any circuits in the ice maker. Before cleaning or servicing this equipment,

disconnect all power supplies.

Rev:3/02 Kold-Draft

Service & Parts Manual

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T-25X/T-26X Crusher Installation

must be mounted by the installer. (See Illustration "D") If not provided, locate and drill two 3/16 inch dia. holes in the ice maker lower front rail. Mount the safety switch support with the #8-32 screws and nuts provided.

11. Install a grommet in the 1-3/32 inch dia. hole in the ice maker condensing unit pan. Push the crusher control wire assemblies through the grommet into the ice maker.

12. Connect the safety switch wires from the crusher to the "Common" and "Normally Open" terminals of the cuber safety switch. (See Wiring Diagram)

13. Route the crusher control wires along the right side of the partition wall to a 7/8 inch hole located to the right of the contactor. Install a grommet in the hole and push the wires through.

14. The bin thermostat in the cuber must be disabled and replaced by the two thermostatic switches in the crusher. (See Wiring Diagram)

15. The crushed ice thermostat (left) cap tube is placed into the straight thermostat tube holder. Push the cap tube into the flared end until the cap tube is visible at the straight end. Install the tube holder into the hole in the motor platform directly behind the crusher motor.

16. The cube ice thermostat (right) cap tube is placed into the bent thermostat tube holder. Mount the tube holder as shown. (See Illustration "E") Tighten clamp screws. Adjust thermostats to shut off the cuber approximately 1 minute after ice contacts the tube holders.

CAUTION:

{

Route bin thermostat cap tubes away from moving parts.

Kold-Draft® Service & Parts Manual Rev:3/02

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T-25X/T-26X Crusher Installation Specifications

INSTALLATION SPECIFICATIONS

The T-250 and T-264 are wired at the factory for 200-240 volt 50/60 hz. operation. The T-251 and T-261 are wired for 100-120 volt 50/60 hz. operation.

CAUTION:

{

Risk of property damage, equipment failure or fire. Comply with all installation specifications for safe operation.

Refer to equipment name plate data for current value and maximum fuse size. This unit must be provided with a separate, properly protected circuit with no other loads. A fused disconnect installed adjacent to the crusher is recommended (must be supplied by installer), and may be required by local codes.

Crushers are intended for indoor use only with permanent connection to a field electrical supply. All models are intended to be installed only in conjunction with

Kold-Draft® cubers on Kold-Draft® bins.

CRUSHER OPERATION

With the crusher knob in the "CRUSHED" position, ice falling from the cuber will be directed by the selector plate through the crusher mechanism and deposited into the left side of the bin.

The crusher motor is powered through a relay which is energized by the red circuit of the ice maker. The selector knob must be in the "CRUSHED" position to close a switch and complete the circuit to the motor. Additionally, the front panel safety switches must be depressed (covers on) for motor operation.

Wi th the crusher knob in the "CUBE" position, ice falling from the cuber will bypass the crusher mechanism and be dumped into the right side of the bin. The crusher motor will not be energized.

Rev:3/02 Kold-Draft

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Service & Parts Manual

Kold-Draft GB620A Operators Manual

Specifications and Main Features

Frequently Asked Questions

User Manual