Series ’90 Refrigerated Bakery
Page 7
DANGER:
Electric shock hazard. Do not operate unit with
panels removed.
A.
Mount condensing unit indoors as close to the remote display as practical. The
refrigeration line should be as short as possible.
B.
All refrigeration and/or electrical materials between the condensing unit and display
case are to be supplied by installing contractor.
C.
Route properly sized and designed refrigeration lines from the condensing unit to the
cabinet. Horizontal suction lines should be pitched downward towards the condensing
unit and least ½” per 10’ run to aid the oil drainage. A “P” trap must be installed in the
suction line at the foot of every riser to insure oil return. Dry nitrogen should be used to
flow through tubing while brazing refrigeration lines.
D.
Suction line must be insulated the entire length with armaflex (or equivalent). Do not
run liquid line inside insulation with suction line.
E.
The filter drier, sightglass, and low pressure control are not furnished with remote
display case models. The recommended low pressure setting for R134A refrigerant is
32# cut in and 0# cut-out.
F.
Leak check condensing unit, cabinet, and all connecting tubing. Cabinet and
condensing unit tubing should be checked to insure no leaks occurred during shipping
or from rough handling. Make certain all refrigeration valves are opened and evacuate
system to 500 microns. Charge the system with refrigerant type specified on the data
plates.
Grill Removal
The front of the case has a removable base panel to access the anti-fogging fans and the
front leg levelers from inside of the case. Normally it is not necessary to remove the panel to
install the case. This panel must be in place for proper operation of the case.
There are two (2) removable panels on the back of the case. The left side panel allows
access to the light ballasts, the pullout condensing unit, and the field wiring connection box.
Remove this panel to make field wiring connections.
The right side panels has the thermometer, power switch, light switch, and thermostat
mounted to it. Removing this panel allows access to the terminal board, branch circuit fuse,
condensate evaporator, and compressor service ports. Normally it is not necessary to
remove this panel to install the case.
Condensate Evaporator
This case is furnished with an electric condensate evaporator. Plumbing connections are
not required.
The condensate evaporator is located behind the control panel box and is accessible from
the rear of the case.
