2Model 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 prevent recirculation of warm air. Failur e
to allow adequate clearance can reduce the
refrigeration capacity 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 rear of
the base pan, two 3/8” I.P.S. (for s ingle-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” inside diameter water lines
should be connected to the machine. (Flexible lines
are recommended, if local codes permit.) Depending
on local water conditions, it may be advisable to
install a water strainer to prevent foreign substanc es
from clogging the automatic water valve. 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 t he
water “out” line! Water should always flow in this
order: first, through the automatic wat er valve;
second, through the condenser; and third, through
the outlet fittingto an opentrapdrain.
A back flow prevention devi ce is
required on theincoming water connection side.
Please refer to the applicable National, State, and
local codes for determining the proper configuration.
Electrical Connections
In the United States, this equipment is intended t o
be installed in accordance with the National
Electrical Code (NEC), ANSI/NFPA 70-1987. T he
purpose of the NEC code is the practical
safeguarding of persons and property from hazards
arising from the use of electricity. This c ode contains
provisions considered necessary for safety. In all
other areas of the world, equipment should be
installed in accordance with the existing local codes.
Please contact your local authorities.
FOLLOW YOUR LOCAL ELECTRICAL CODES!
Each unit requires one power supply for each data
label on the unit. Check the data label(s) on the
freezer for branch circuit overcurrent prot ection or
fuse, circuit ampacity, and other electrical
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. T he
installation location is marked by the equipotential
bonding symbol (5021 of IEC 60417-1) on both the
removable panel and the equipment's frame.
SStationary 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.