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Installation Instructions
Electrical Service
GENERAL
!
All wiring must conform to local, state and national
codes.
Prepare electrical circuit before installation of your ice
machine. Installation requires a grounded (three-prong),
polarized receptacle with a separate fuse/circuit breaker
in an electrical service box.
VOLTAGE
The maximum allowable voltage variation is ±10% of the
rated voltage at ice machine start-up (when the electrical
load is highest).
!
The ice machine must be grounded in accordance
with national and local electrical codes.
All electrical work, including wire routing and grounding,
must conform to local, state and national electrical
codes. The following precautions must be observed:
•
The ice machine must be grounded.
•
A separate fuse/circuit breaker must be provided for
each ice machine.
•
The maximum allowable voltage variation is +/-10%
of the rated voltage at ice machine start-up (when the
electrical load is highest).
•
Check all green ground screws in the control box and
verify they are tight before starting the ice machine.
•
Manitowoc's recommended minimum wire size is
#14 for less than 100' (30.5 m) or #12 for more than
100' to 200' (30.5 to 61 m) (solid copper conductor
only). The recommended breaker is 15 amp. Local or
state electrical code, length of run or materials used,
can increase the minimum wire gauge required. A
qualified electrician must determine the proper wire
size, although #14 is the minimum size allowed.
6
Warning
Warning
Important
Observe correct polarity of incoming line voltage.
Incorrect polarity can lead to erratic ice machine
operation and a safety issue.
MINIMUM CIRCUIT AMPACITY
The minimum circuit ampacity is used to help select the
wire size of the electrical supply. (Minimum circuit
ampacity is not the ice machine's running amp load.)
ELECTRICAL REQUIREMENTS
Refer to Ice Machine Model/Serial Plate for voltage/
amperage specifications.
MAXIMUM BREAKER SIZE & MINIMUM CIRCUIT
AMPERAGE CHART
Voltage
Model
Phase
Cycle
SM50A
115/1/60
GFCI REQUIREMENTS
If GFCI (ground fault circuit interrupter) is required by
local electrical code, it must be breaker type.
Section 2
Air-Cooled
Maximum
Minimum
Fuse/
Circuit
Circuit
Amps
Breaker
15
4.1
Part Number 040001361 05/10
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