Kold-Draft GB620A Operators Manual
KOLD-DRAFT
CLASSIC
GB/GT/T-250
K
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
©2004 KDIndustries, Inc., Erie, PA U.S.A.
Printed in U.S.A. 5/07
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
- 1 -
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
- 2 -
02
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
- 3 -
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
- 4 -
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
- 5 -
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
- 6 -
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
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
- 7 -
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
- 8 -
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
- 9 -
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
- 10 -
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
- 11 -
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
- 12 -
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
- 13 -
CHECK FOR FREIGHT DAMAGE BEFORE PROCEEDING. Even though damage to
GB &
GT
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
- 14 -
GB &
GT
Cuber
Installation Instructions
GB1220
GB1240
GB1250
Kold-Draft® Service & Parts Manual Rev:3/02
- 15 -
GB &
GT
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.
Kold-Draft® Service & Parts Manual Rev:3/02
- 16 -
6. Install gasketing on top of bin if required. Gasket material must be positioned so
GB &
GT
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 &
GT
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
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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.
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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
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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.
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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.
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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
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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")
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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
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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
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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
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