50GL
Single-Package Electric Cooling Unit
with Puron® (R-410A) Refrigerant
A Guide To Operating and Maintaining Your
Single-Package Electric Cooling Unit
NOTE TO INSTALLER
This manual should be left with the equipment owner.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance. Failure to
follow this warning could result in fire, serious injury, or
death.
Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the
unit and to replace any part of the control system which has
been under water. Failure to follow this warning could result
in electrical shock, fire, serious injury, or death.
Before performing recommended maintenance, be sure the
main power switch to unit is turned off. Electric shock could
cause serious injury or death.
TO START UNIT
Step 1—Turn on the electrical power supply to unit.
Step 2—Select temperature and set system switch to
desired mode.
TO SHUT UNIT OFF
If unit is being shut down because of a malfunction, call your
dealer as soon as possible.
Step 1—Set system switch to OFF.
Step 2—Turn off the electrical power supply to unit.
ROUTINE MAINTENANCE
All routine maintenance should be handled by skilled, experienced
personnel. Your dealer can help you establish a standard proce-
dure.
For your safety, keep the unit area clear and free of combustible
materials, gasoline, and other flammable liquids and vapors.
To assure proper functioning of the unit, flow of condenser air
must not be obstructed from reaching the unit. Clearance of at least
36 in. is required from top of unit and on sides except the power
entry side (42 in. clearance) and the duct side (12 in. minimum
clearance).
MAINTENANCE AND CARE FOR THE EQUIPMENT
OWNER
Before proceeding with those things you might want to maintain
yourself, please carefully consider the following:
1. TURN OFF ELECTRICAL POWER TO YOUR UNIT
BEFORE SERVICING OR PERFORMING MAINTE-
NANCE. ELECTRIC SHOCK COULD CAUSE SERI-
OUS INJURY OR DEATH.
2. When removing access panels or performing maintenance
functions inside your unit, be aware of sharp sheet metal
parts and screws. Although special care is taken to reduce
sharp edges to a minimum, be extremely careful when
handling parts or reaching into the unit.
AIR FILTERS — Air filter(s) should be checked at least every 3
or 4 weeks and changed or cleaned whenever it becomes dirty.
Dirty filters produce excessive stress on the blower motor and can
cause the motor to overheat and shut down. Table 1 indicates the
correct filter size for your unit. Refer to Fig. 2 to access the
filter(s).
To replace or inspect filter(s) (or accessory filter rack when
supplied):
1. Remove the filter access panel using a 5/16-in. nut driver.
2. Remove the filter(s) by pulling the filter(s) out of the unit. If
the filter(s) is dirty, clean or replace with new one.
When installing the new filter(s), note the direction of the airflow
arrows on the filter frame.
If you have difficulty in locating your air filter(s), or if you have
questions concerning proper filter maintenance, contact your
dealer for instructions. When replacing filters, always use the same
size and type of filter that was supplied originally by the installer.
Fig. 1—Unit 50GL
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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
4
Tab
1b 1a
PC 101
Catalog No. 565-00014
Printed in U.S.A.
Form OM50-28
Pg 1
6-00
Replaces: New
