Kold-Draft MGT350 Series Installation instructions

Marine Cuber with Manifold
Installation & Operation Instructions
KOLD-DRAFT
CLASSIC
M
GT
350
W
®
KOLD-DRAFT
1525 East Lake Road, Erie, PA 16511-1088
814/453-6761
FAX [phone]
©2004 KDIndustries, Inc., Erie, PA U.S.A.
Printed in U.S.A. 3/04
508 1060 01
A Tradition of Excellence In Ice Equipment.
Ice Machine Products
®

CHECK FOR FREIGHT DAMAGE BE 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.
INSTALLATION
1. Position the ice storage bin so that the following minimum clearances will be
available around the ice maker for ventilation and utility connections:
REAR and TOP: 6 inches
RIGHT SIDE: 6 inches
LEFT SIDE : 6 inches
508106001 Rev: 8/02
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 AND OPERATION INSTRUCTIONS
FOR
KOLD-DRAFT
®
M
A
RI
NE
M
GT3
5
0
SERIES ICE
CUBERS

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).
3. Remove the cuber cabinet TOP panel as follows:
Lift from the front and pull forward 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, be sure that the screws engage the TOP
panel.
5. Remove the ice chute/drain pan. Drain tube assembly shown below is packed
with the drain pan.
6. 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 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. Install the drain pan/ice chute. Route the drain tube assembly through the rear
of the bin, and clamp the tubing to the drain pan nipple.
9. Electrical, water and drain locations are shown on the following drawing. All
dimensions are in inches.
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WARNING:
{ RISK OF CONTAMINATION OF ICE IN THE BIN.
{ Provide separate, unconnected, drains for the ice maker and the bin.
{
Consult local codes for suitable connections to th
e building drains.
CAUTION:
{ RISK OF PERSONAL INJURY OR EQUIPMENT DAMAGE.
{ Use a suitable lifting means and be careful of sharp edges.

10. Purge the potable water supply line.
11. Remove the water plate shipping strap.
12. Route the bin thermostat capillary tube through the grommet in the right end
frame wall and under the ice chute. See the diagram and notes following for
location and securing of the capillary tube.
13. If start-up will not occur immediately, secure all cuber cabinet panels now.
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INSTALLATION SPECIFICATIONS
1/2 1/23/41/415 158.6208-230/60/1MGT354W 1/2 1/23/41/415 2014.4115/60/1MGT351W
CONDENSER
COOLANT
(COMPRESSION)
SUPPLY DISCHARGE
ICE MAKER
DRAIN SIZE
(ID)
WATER
INLET SIZE
(FPT)
FUSE / HACR
BREAKER SIZE
(AMPS)
NORMAL MAXIMUM
MINIMUM
CIRCUIT
AMPACITY
ELECTRICAL
SUPPLY
MODEL
READ THE FOLLOWING NOTES CAREFULLY PRIOR TO MAKING CONNECTIONS
Voltage tolerances: Nominal No-load MAXIMUM Full-load MINIMUM
115 126 104
208/230 252 198
220/240 250 210
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 (must be supplied by the installer), 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 0.6 GPM for
each GT350 machine. Backflow/backsiphonage protection 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 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.
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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.

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.
All models are intended FOR INDOOR USE ONLY with PERMANENT CONNECTION
TO THE FIELD ELECTRICAL SUPPLY.
Other operating condition requirements:
Ice maker ambient air temperature: MINIMUM 45°F.; MAXIMUM 90°F.
Potable water and condenser liquid supply:
Temperature: MINIMUM 45°F.; MAXIMUM 90°F.
Pressure: MINIMUM 30 psig; MAXIMUM 100 psig*
*If regulator is used, recommended setting is 30 to 50 psig.
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START-UP INSTRUCTIONS
WATER LEVELS, CYCLE TIMES, AND REFRIGERANT CHARGES
20
Refrigerant Charge, ounces (R-404A)
3.52
Approximate harvest weight, lb.
2814
Approximate cycle time, min.
2 5/83Water fill level (Top of tank to level in control tube,inches)
C/HKK
MGT350W
MODEL NUMBER
PARAMETER
** Values are for Air-cooled model at 90°F air/70°F. water temperatures with cuber
adjusted to produce fully-formed ice. Greater 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.
CAUTION: REFRIGERANT CHARGES MUST BE ACCURATELY WEIGHED.
Consult the specification and troubleshooting guide 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. Turn on supply water and power. Be sure that condenser liquid is ready for use
before turning power on. Check for leaks in water/liquid supply connections.
4. 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.
5. 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 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).
6. 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 whin it is fully closed, and the water
fill cycle will repeat.
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7. 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 "adjustments" section in the service 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.
8. Test the bin thermostat by holding some ice against the capillary tube. If
necessary, adjust the thermostat so that the ice maker shuts off within 30
seconds after ice contacts the capillary tube.
9. Be sure that the drain pan/ice chute is in place, and that the electrical control
box cover is 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.
10. Discard ice from start-up cycles, then clean and sanitize the bin following the
instructions provided with the bin.
11. Complete and mail the Registration Certificate and leave this manual with the
owner/user. Emphasize the "CAUTION: RISK OF PERSONAL INJURY..."
NOTICE ON THE FRONT PAGE, and the importance of the PREVENTATIVE
MAINTENANCE recommendations below.
PREVENTATIVE MAINTENANCE
CLEANING: Usually at 3 to 6 month intervals, depending on water conditions.
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 housekeeping
at the installation site. A CALL FOR SERVICE AS SOON AS A POSSIBLE
PROBLEM IS NOTICED MAY AVOID EXTENSIVE REPAIRS.
CHART OF TYPICAL REFRIGERANT OPERATING PRESSURES
All pressures may vary with operating conditions and
cuber adjustments.
Approx. 15070 to 150Harvest
cycle
250*12 to 20Just before
harvest
250*Approx. 50Beginning of
freeze cycle
*104oF condensing temperature.
WATER COOLED
CONDENSER
R-404a
All pressures are in psigHIGH-SIDELOW-SIDE,
R-404a
TIME
508106001 Rev: 8/02
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1. Mix 1/2 bag of KOLD-DRAFT ice machine cleaner (55R-01000) in one (1) quart
of clean, warm water (180°F. MAX.) for each 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 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 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 of 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.
10. While the cleaning and sanitizing solutions are circulating, clean, rinse, and
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 CUBER CLEANING INSTRUCTIONS
508106001 Rev: 8/02
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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 BIN CLEANING INSTRUCTIONS
The bin should be cleaned periodically. If bin drain has any horizontal run, remove ice
from left side of bin and flush with two quarts of hot water monthly. (Long drain lines
should be flushed weekly.)
1. Clean exterior of bin frequently.
2. To clean the interior, follow 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 panels before re-connecting the electrical supply.
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 machine 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
water out of the condenser coils.
3. The machine should then be run into defrost to drain the water tank and the air
blown into the water inlet to blow out the water solenoid.
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