Kold-Draft GB12XX Installation Manual

CLASSIC

K O L D-D R A F T

GB Ice Maker Models

Installation and Operation Instructions

CHECK FOR FREIGHT DAMAGE BEFORE PROCEEDING: Even though damage to

the carton may not be evident, check for hidden damage and if found contact the freight

carrier immediately to file a claim.

THIS EQUIPMENT MUST BE INSTALLED IN COMPLIANCE WITH ALL APPLICABLE

FEDERAL, STATE/PROVINCE, AND/OR LOCAL PLUMBING, ELECTRICAL, AND

HEALTH/SANITATION CODES AND REQUIREMENTS.

Failure to understand and follow these

instructions could lead to the following

Risks and Damage

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 all spills immediately, keep storage bin doors

closed, and report any leaks or unusual sounds to responsible
maintenance personnel.

{ Use suitable lifting techniques and watch for sharp edges.
{ Failure to follow all installation specifications and instructions may

cause: improper operation and equipment damage or fire.

1525 East Lake Road, Erie, PA 16511-1088

www.kold-draft.com

Phone [phone]

Fax [phone]

©2005 KDIndustries, Inc., Erie, PA U.S.A.

508107001 Rev.02/05

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Installation Specifications

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 length. For conductor length over 25 feet up to 100 feet, increase 1 AWG size. Over 100
feet requires 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. and
may be required by local codes. NORMAL protector size is based on rated voltage and operation
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 20 psig supply pressure while the ice maker is filling is required. Maximum
supply pressure is 100 psig. The water fill flow rate is 1 GPM for each GB4XX or GB6XX
machine. Backflow prevention is provided by an internal air gap (accepted by NSF). If additional
protection is required by local codes or authorities, any device(s) and installation 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 rinse and purge 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 85OF. 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.

All models are intended FOR INDOOR USE ONLY with PERMANENT CONNECTION TO THE
FIELD ELECTRICAL SUPPLY. Remote air cooled condensers supplied by KOLD-DRAFT may
be installed outdoors, and they require a separate electrical supply.

Other operating condition requirements:

Ice maker ambient air temperature: MINIMUM 45°F*.; MAXIMUM 90°F.
Remote condenser ambient air temperature: CONSULT SERVICE MANUAL
*Ice maker ambient temperatures less than 50°F may cause erratic bin thermostat operation.

Potable water and condenser liquid supply:

Temperature: MINIMUM 45°F*.; MAXIMUM 90°F.
Pressure: MINIMUM 20 psig; MAXIMUM 100 psig**
*Potable water temperatures less than 50°F are likely to cause cold-water thermostat operation
(see SERVICE MANUAL).
**If regulator is used, recommended setting is 30 to 50 psig.

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INSTALLATION

NOTE: For Stacked installations, refer to the instructions for stacking before proceeding.

Location:

1. Position the ice storage bin with the following minimum clearances around the
ice maker for ventilation and utility connections:

GB Ice Makers GB1250A Ice Maker

Except GB1250A

REAR: 6 inches 10 inches (measured from the side opposite of the condenser)
RIGHT: 8 inches 6 inches
LEFT: 4 inches 6 inches
TOP: 6 inches 2 inches

Level Equipment:

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 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).

Cabinet Panel, Ice Deflector, Ice Chute, and Drain Pan Removal:

3. Remove the cuber cabinet panels as follows:

TOP: Lift the front edge and pull forward until the rear clip is disengaged

from the chassis.
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.

4. Remove the ice deflector, ice chute and drain pan. Peel off the protective film from the
ice maker and the bin exterior panels.

Gasket the Bin Top:

5. Install gasketing on top of the bin. Gasket material must be positioned so that it extends
to all the outside edges of the ice maker chassis.

Position the Ice Maker on the Bin Top:

6. CAREFULLY place the ice maker onto the bin, note the alignment of the mounting holes in
the ice maker if mounting means (holes) are provided on the bin. 1/4”-20 capscrews are
provided for securing the ice maker to the bin. Consult the bin installation instructions for
additional information.

Install Ice Deflector, Ice Chute and Drain Pan:

7. Install the ice deflector, drain pan, and ice chute. Install the drain tube assembly through
the rear of the bin, and clamp the tubing to the drain pan nipple.

NOTE:
To avoid the RISK OF CONTAMINATION OF ICE IN THE BIN,
provide separate, unconnected, drains for the ice maker and the bin.

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Consult local codes for suitable connections to the building drains.

Water System:

8. Purge the potable water supply line.

Remove the Shipping Strap:

9. Remove the water plate shipping strap.

Install Thermostat:

10. Install the insulated bin thermostat tube through the grommet, in the condensing
unit pan and push all the way down. 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 jam above the bin door opening. Carefully uncoil
the insulated loop of thermostat tube, while recoiling it further up, to lower the bin fill
level.

Be careful not to kink the Thermostat tube when bending it. Form it against

your finger or other round object.

START-UP INSTRUCTIONS

Consult the troubleshooting guide if variations from

the following description of operation are noticed:

Mode Selector Switch:

1. Move the “ICE-OFF-WASH” switch to the center (OFF) position.

Power and Water Supply :

2. Be sure that condenser liquid (Water models) or refrigerant lines and condenser
(Remote models) are ready for use before turning power on. Turn on supply water
and power. Check for leaks in water/liquid supply connections.

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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 15 psig.

Prime the Pump:

3. Be sure that pump hoses are connected, then put about one pint of clean tap water
into the circulation system to lubricate the pump seal.

Start the Ice Maker:

4. Move the “ICE-OFF-WASH” switch to the right “WASH” position and observe the water
fill cycle and the pump running. If all water plate distributor holes do not produce full streams
and the appearance of air is evident in the tube, pinch 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).

Open the Water Plate:

5. Pull the right end of the water plate down, stretching the springs until the pump stops,
and hold until the pump does not restart when the water plate is 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.

Start Ice Production:

6. 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. Initial ice making cycles
may exhibit supercooling 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 three (3) cycles, close the expansion 1/4 turn and cycle
a minimum of three more times. If the problem persists, repeat the previous step.

Test Bin Thermostat:

7. Test the bin thermostat(s) by holding some ice against the insulated bin thermostat tube(s).
If necessary, adjust the thermostat(s) sensitivity towards +, so that the ice maker(s) shut off within
30 seconds after ice contacts the bin thermostat tube(s). (See Photo Next Page)

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Clean Up:

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

Registration and Instructions:

9. Complete and mail the Registration Certificate and leave these instructions with the owner/
user. Emphasize the “CAUTION: RISK OF PERSONAL INJURY...” NOTICE ON THE
COVER OF THIS DOCUMENT.

10. Reinstall the cabinet panels even if the Cuber will not be operated immediately.

WATER LEVELS, CYCLE TIMES, AND REFRIGERANT CHARGES

MODEL NUMBER

GB12XXGB4XX GB6XX

K C/HK K C/HK K C/HK
Water fill level (Top of tank to level in control tube) 3.63 2.75 3.63 2.75 3.63 2.75
Approximate cycle time, minutes* 15 33/26 13 25.5/21 12 22.5/18
Approximate harvest weight, pounds 4 7.7/7.1 4 7.7/7.1 8 15.4/14.2

* Values are for Air-cooled model at 90°F air/70°F. water temperatures with cuber adjusted to
produce fully-formed ice. Greater ice capacity can be obtained by reducing the water fill level
(lowering the high-level probe) to produce ice with larger dimples. A slight adjustment of the
probe will result in a noticeable effect on dimple size. The control stream will not rise over the
dam with lower water fill levels than indicated above.

TYPICAL REFRIGERANT OPERATING CONDITIONS

All pressures are psig

HIGH-SIDE

R-404a

150

Minimum

TIME

Beginning of

freeze cycle

Just before

harvest

Harvest

cycle

LOW-SIDE,

R-404a

W A R

Approx. 50 250* ** 200 Min. ****

12 to 20 250* *** 200 Min. ****

70 to 150 Approx. 150 Approx. 150

All pressures may vary with operating conditions and adjustments.
* 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.

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Kold-Draft Ice Maker Installation Checklist

! Are the ice makers and bin level?

! Is there proper clearance around the machine for air circulation?

! Have all electrical, water and sewer connections been made?

! Has the supply voltage been tested with the ice maker on a dedicated, protected circuit?

! Is the machine installed where ambient air temperatures will range from 45 to 90F (7 to 32C)?

! Is the machine installed where incoming water temperatures will range from 45 to 90F (7 to 32C)?

! Does the water supply provide a minimum 20 psig dynamic to maximum 100 psig static pressure?

! Is there a separate drain line for the water cooled condenser?

! Are there separate drain lines for the ice maker and bin?

! Are the ice makers and bin drains vented?

! Is the bin thermostat run correctly, secured, tested and positioned in the bin at the right level?

! Is the gasket positioned between the perimeter of the ice maker and bin top?

! Are the electrical lines free from contact with refrigerant lines and moving parts?

! Are the drain pan and ice chute positioned properly and is the packing tape removed?

! Has the start up process been completed with good ice quality?

! Have you cleaned and sanitized the ice maker and bin?

! Is the mode selector switch set to the ice position?

! Are the cabinet panels secured?

! Has the owner been instructed regarding cleaning, maintenance and the high pressure reset button?

! Has the owner completed the registration card?

! Have you left the installation and operation manual?

Additional Remote Model Checklist

! Does the remote condenser fan operate properly?

! Are the refrigeration lines run so they don’t form a trap, other than a service loop at the back of the ice

maker, or sit in water? Is any excess tubing located indoors?

! Is the refrigeration discharge line, to the remote condenser, insulated?

! Is the system adequately charged considering ambient temperature, line length & condenser volume?

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