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Models 750, 751, 754, 774, 791, 794To the Installer
101027
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 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” 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 substances 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 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 p roper configuration.
Electrical Conn ection s
In the United States, this equipment is intended to be
installed in a ccordance 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 use of
electricity. This code 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 s upply for each data
label on the unit. Check the data label(s) on the freezer
for b ranch circuit overcurrent protection 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 I NJURY
FROM ELECTRICAL SHOCK!
DO NOT operate this freezer with larger fuses
than specified on the unit data label. Failure to follow
this instruction may result in electrocution or damage
to the machine.
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
symbol (5021 of IEC 60417-1) on both the removable
panel and the equipment’s frame.
Stationary appliances which are not equipped
with a power cord and a plug o r 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.
Appliances that are permanently connected to
fixed wiring and for which leakage currents may
exceed 10 mA, particularly when disconnected or not
used for long periods, or during initial installation, shall
have p rotective devices such as a GFI, to protect
against the leakage of current, installed by the
authorized personnel to the l ocal codes.