Manitowoc Undercounter Installation
These instructions are provided to assist the qualified installer. Check your local Yellow Pages for the name of the nearest Manitowoc distributor, or call Manitowoc Ice, Inc. for information regarding start-up services.
Failure to follow these installation guidelines may affect warranty coverage.
Location of Ice Machine
The location selected for the ice machine must meet the following criteria. If any of these criteria are not met, select another location.
• The location must be indoors.
• The location must be free of airborne and other contaminants.
• The air temperature must be at least 35°F (1.7°C), but must not exceed 110°F (43.4°C).
• The location must not be near heat-generating equipment or in direct sunlight.
• The location must be capable of supporting the weight of the ice machine and a full bin of ice.
• The location must allow enough clearance for water, drain and electrical connections in the rear of the ice machine.
• The location must not obstruct airflow through or around the ice machine (condenser airflow is in and out the front).
* NOTE: The ice machine may be built into a cabinet.
There is no minimum clearance requirement for the top or left and right sides of the ice machine. The listed values are recommended for efficient operation and servicing only.
The ice machine must be protected if it will be subjected to temperatures below 32°F (0°C). Failure caused by exposure to freezing temperatures is not covered by the warranty.
See “Removal from Service/Winterization” on page 4-11.
For United Kingdom Only
As the colours of the wires in the mains lead of the appliance may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:
• The wire which is coloured green and yellow must be connected to the terminal in the plug which is marked with the letter E or by the earth ground symbol or coloured green or green and yellow.
• The wire coloured blue must be connected to the terminal which is marked with the letter N or coloured black.
• The wire coloured brown must be connected to the terminal which is marked with the letter L or coloured red.
Local water conditions may require treatment of the water to inhibit scale formation, filter sediment, remove chlorine, and improve taste and clarity.
If you are installing a Manitowoc Tri-Liminator water filter system, refer to the Installation Instructions supplied with the
filter system for ice making water inlet connections.
WATER INLET LINES
Follow these guidelines to install water inlet lines:
• Do not connect the ice machine to a hot water supply. Be sure all hot water restrictors installed for other equipment are working. (Check valves on sink faucets, dishwashers, etc.)
• If water pressure exceeds the maximum (80 psig-551.5 kPA) recommended pressure, obtain a water pressure regulator
from your Manitowoc distributor.
• Install a water shut-off valve and union for both the ice making and condenser water lines.
• Insulate water inlet lines to prevent condensation.
Follow these guidelines when installing drain lines to prevent drain water from flowing back into the ice machine and
• Drain lines must have a 1.5 inch (3.8 cm)drop per 5 feet of run (2.5 cm per meter), and must not create traps.
• The floor drain must be large enough to accommodate drainage from all drains.
• Run separate bin and water-cooled condenser drain lines. Insulate them to prevent condensation.
• Vent the bin drain to the atmosphere. Do not vent the condenser drain on water-cooled models.
COOLING TOWER APPLICATIONS
A water cooling tower installation does not require modification of the ice machine. The water regulator valve for the
condenser continues to control the refrigeration discharge pressure.
It is necessary to know the amount of heat rejection, (refer to page 2-3) and the pressure drop through the condenser and water valves (inlet and outlet) when using a cooling tower on an ice machine.
• Water entering the condenser must not exceed 90°F (32.2°C).
• Water flow through the condenser must not exceed 5 gallons (19 liters) per minute.
• Allow for a pressure drop of 7 psi (48 kPA) between the condenser water inlet and the outlet of the ice machine.
• Water exiting the condenser must not exceed 110°F (43.3°C).
The Commonwealth of Massachusetts requires that all water-cooled models must be connected only to a closed loop,
cooling tower system.
Before Starting the Ice Machine
Is the ice machine level?
All Manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new installations
do not require any adjustment.
Has all of the internal packing been removed?
Have all of the electrical and water connections been made?
To ensure proper operation, follow the Operational Checks on page 3-4 of this manual. Starting the ice machine and completing the Operational Checks are the responsibilities of the owner/operator.
Has the supply voltage been tested and checked against the rating on the nameplate?
Is there proper clearance around the ice machine for air circulation?
Adjustments and maintenance procedures outlined in this manual are not covered by the warranty.
Has the ice machine been installed where ambient temperatures will remain in the range of 35° - 110°F (1.7° - 43.3°C)?
Has the ice machine been installed where the incoming water temperature will remain in the range of 33° - 90°F (0.6° - 32.2°C)?
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been misused, abused, neglected, damaged, or altered/modified from that of original manufactured specifications.
Is there a separate drain line for the water-cooled condenser?
Are all electrical leads free from contact with refrigeration lines and moving equipment?
Has the owner/operator been instructed regarding maintenance and the use of Manitowoc Cleaner and Sanitizer?
Has the owner/operator completed the warranty registration card?
Has the ice machine and bin been sanitized?
Has this manual been given to the owner/operator?
Is the float valve in the OPEN position?