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Model 490To the Installer
110328
Air Cooled Units
DO NOT obstruct air intake and discharge openings:
Air cooled units require a minimum of 6” (152 mm)
of clearance on both sides of the freezer. It is
recommended to place the rear of the unit against
the wall to pr event recirculation of warm air. Failure
to allow adequate c learance c an reduce the
refrigeration c apacity of the freezer and possibly
cause permanent damage to the compressors.
Water Connections
(Water Cooled Units Only)
An adequate cold water supply must be provided
with a hand shut-off valve. On the underside r ear of
the base pan, two 3/8” I.P.S. (for single-head units)
or two 1/2” I.P.S. (for double-head units) water
connections for inlet and outlet have been provided
for easy hook-up. 1/2” ins ide diameter water lines
should be connected to the machine. (Flexible lines
are recommended, if local codes permit.) Depending
on loc al water conditions, it may be advisable to
install a water strainer to prevent foreign s ubstances
from clogging the automatic water v alve. There will
be only one water “ in” and one water “out”
connection for both single-head and double-head
units. DO NOT install a hand shut-off valve on the
water “out” line! Water should always flow in this
order: first, through the automatic water valve;
second, through the condenser; and third, through
the outlet fitting to an opentrapdrain.
A back flow prevention device is
required on the incoming water connection side.
Please refer to the applicable National, State, and
local codes for determining the pr oper configuration.
Electrical Connections
In the United States, this equipment is intended to
be ins talled in accordance with the National
Electrical Code (NEC), ANSI/NFPA 70-1987. The
purpose of the NEC code is the practical
safeguarding of persons and property from hazards
arising from the us e of electricity. This code contains
provisions considered necessary for safety. In all
other areas of the world, equipm ent s hould be
installed in accordance with the existing local codes.
Please contact your local authorities.
FOLLOW YOUR LOCAL ELECTRICAL CODES!
Each unit r equires one power supply for each data
label on the unit. Check t he data label(s) on the
freezer for branch circuit overcurrent protection or
fuse, circuit ampacity, and other elec trical
specifications. Refer to the wiring diagram provided
inside of the electrical box for proper power
connections.
CAUTION: THIS EQUIPMENT MUST BE
PROPERLY GROUNDED! FAILURE TO DO SO
CAN RESULT IN SEVERE PERSONAL INJURY
FROM ELECTRICAL SHOCK!
This unit is provided with an equipotential
grounding lug that is to be properly attached to the
rear of the frame by the authorized installer. The
installation location is marked by the equipotential
bonding s ymbol ( 5021 of IEC 60417-1) on both the
removable panel and the equipment's frame.
S Stationary appliances which are not
equipped with a power cord and a plug or
another device to disconnect the appliance
from the power source must have an all-pole
disconnecting device with a contact gap of
at least 3 mm installed in the external
installation.