Installation Instructions Section 2
2-2
Part Number 000005544 12/09
Electrical Service
VOLTAGE
The maximum allowable voltage variation is ±10% of the
rated voltage on the ice machine model/serial number
plate at start-up (when the electrical load is highest).
FUSE/CIRCUIT BREAKER
A separate fuse/circuit breaker must be provided for
each ice machine. Circuit breakers must be H.A.C.R.
rated (does not apply in Canada).
115/60/1 ice machines are factory pre-wired with a
power cord and 5-15P plug.
230/50/1 ice machines are factory pre-wired with a
power cord, no plug is supplied.
TOTAL CIRCUIT AMPACITY
The total circuit ampacity is used to help select the wire
size of the electrical supply.
The wire size (or gauge) is also dependent upon
location, materials used, length of run, etc., so it must be
determined by a qualified electrician.
Electrical Requirements
Water Supply and Drains
POTABLE WATER SUPPLY
Local water conditions may require treatment of the
water to inhibit scale formation, filter sediment, and
remove chlorine odor and taste.
POTABLE 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 the ice
making water lines.
• Insulate water inlet lines to prevent condensation.
DRAIN CONNECTIONS
Follow these guidelines when installing drain lines:
• Drain lines must have a 1.5 inch 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.
• Insulate drain lines to prevent condensation.
• Drains must have a union or other suitable means to
allow in place disconnection from the ice machine
when servicing is required.
All wiring must conform to local, state and national
codes.
The ice machine must be grounded in accordance
with national and local electrical codes.
Ice Machine
Voltage
Phase
Cycle
Air-Cooled
Maximum
Fuse/Circuit
Breaker
Total
Circuit
Amps
SN12
115/1/60 15 10.3
230/1/50 15 4.6
SN20
115/1/60 15 10.3
230/1/50 15 6.0
If you are installing a Manitowoc water filter system,
refer to the Installation Instructions supplied with the
filter system for ice making water inlet connections.
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