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INSTALLATION AND SERVICE MANUAL 917N-CMT, 927CMT, 957CMT
184617-02
CAUTION
To prevent accidental
electrical shock, a positive
earth ground is required.
1. Always verify electrical specifications on
the data plate of each individual
freezer. Data plate specifications will
always supersede the information in
this manual.
2. Supply voltage must be within ± 10% of
voltage indicated on the nameplate.
Also, on three-phase systems, voltage
between phases must be balanced
within 2%. (More than a 6 volt differ-
ence between any two voltage mea-
surements at 208-230 volts indicates a
possible imbalance.) Request the local
power company to correct any voltage
problem.
3. A main power disconnect must be
supplied and should be:
a.
easily accessible
b.
within sight of the freezer
c.
provided for all poles of the
wiring to the freezer
d.
installed in the line ahead of the
unit connections.
Use a disconnect box rated for the
amperage noted on the nameplate of
the freezer. For twin models, provide
a separately-fused disconnect switch
for each side of the unit.
4. Use flexible connections, if possible.
All connections must conform to
local code requirements and be in
compliance with the National Electric
Code.
5. Use fuses or HACR type circuit
breakers not exceeding the maxi-
mum rating allowed on the name-
plate on the back panel of the
freezer.
6. If the 120V receptacles on the
freezer are to be used, a separate
120V power supply is required to be
connected to the freezer service
connection box marked for 120V.
5.3 Electrical Requirements