1-2
TO THE INSTALLER
Models 345, 346, 349, 355 NPR
To the Installer
1
Air-Cooled Machines
Do not obstruct air intake and discharge openings.
Air-cooled machines require 6 in. (152 mm) minimum air
space around all sides of the freezer to allow for
adequate airflow across the condenser(s). Failure to
allow adequate clearance can reduce the refrigeration
capacity of the freezer and possibly cause permanent
damage to the compressor.
Water Connections
(Water-Cooled Machines Only)
An adequate cold-water supply must be provided with a
hand shutoff valve on the two water inlet lines. On the
underside of the base pan, three 1/2 in. IPS water
connections for inlet, outlet, and carbonator have been
provided for easy hookup. Permanently connect the
machine using 1/2 in. (12.7 mm) inside diameter water
lines. Flexible lines are recommended, if local codes
permit.
Failure to use adequately sized water lines may cause
the machine to go off on high head pressure and shut
down. 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 are two water in connections and one water out
connection. Do not install a hand shutoff 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
open trap drain.
Important! Water pressures are preset at the factory. Do
not adjust the water. Improper water adjustments may
cause operation discrepancies.
IMPORTANT! A backflow prevention device is
required on the incoming water connection side. Please
see the applicable national, state, and local codes for
determining the proper configuration. Water pressure to
the unit must not exceed 150 psi (1034 kPa).
It is always a good practice to have a filter system to
improve the quality of the water and to avoid clogging the
operating components.
Important! The water filter (064422-SER) must be
thoroughly flushed with water before connecting it to the
machine. This removes carbon particles that could clog
the flow control. To flush the filter, connect the inlet end of
the filter to the water supply. Position the outlet end of the
filter over an empty pail. Open the water supply. Allow
water to flow through the filter until the water exiting the
filter is clear. Close the water supply. Attach the outlet
end of the filter to the machine. Reopen the water supply.
Figure 1-1
Electrical Connections
In the United States, this equipment is intended to be
installed in accordance with the National Electrical Code
(NEC), ANSI/NFPA 70-1987. The purpose of the NEC is
the practical safeguarding of persons and property from
hazards arising from the use of electricity. This code
contains provisions considered necessary for safety.
Compliance therewith and proper maintenance will result
in an installation essentially free from hazard. In all other
areas of the world, equipment should be installed in
accordance with the existing local codes. Please contact
your local authorities.
Each freezer requires one power supply. Check the data
label on the freezer for branch circuit overcurrent
protection or fuse, circuit ampacity, and electrical
specifications. See the wiring diagram provided inside
the control box for proper power connections.
FOLLOW YOUR LOCAL ELECTRICAL CODES.
To Next Page
Loading...