Service manual

PREFACE
This service manual is primarily intended for the use of
qualified individuals specially trained and experienced in
the service of this type of equipment and related system
components.
Installation and service personnel are required by some
states, counties or cities to be licensed. Persons not
qualified shall not attempt to service this equipment or
interpret this service manual.
SCOPE
This is not a basic refrigeration and air conditioning
manual and does not therefore, cover the principles of
refrigeration or air conditioning. The user of this manual
should have already accomplished a thorough study of
refrigeration and air conditioning.
WARNING
Improper installation may damage equipment, can
create a hazard and will void the warranty.
The use of components not tested in combination with
these units will void the warranty, may make the
equipment in violation of state codes, may create a
hazard and may ruin the equipment.
!WARNING – SHOCK HAZARD!
TO PREVENT THE POSSIBILITY OF SEVERE
PERSONAL INJURY, DEATH OR EQUIPMENT
DAMAGE DUE TO ELECTRICAL SHOCK,
ALWAYS BE SURE THE POWER SUPPLY TO THE
APPLIANCE IS DISCONNECTED BEFORE DOING
ANY WORK ON THE APPLIANCE. THIS CAN
NORMALLY BE ACCOMPLISHED BY
SWITCHING THE BREAKER FOR THE AIR
CONDITIONER TO OFF, DISCONNECTING ALL
EXTERNAL ELECTRICAL CONNECTIONS AND
CORDS, SWITCHING ON-BOARD ELECTRICAL
GENERATORS AND INVERTORS TO OFF, AND
REMOVING THE CABLE FROM EACH POSITIVE
TERMINAL ON ALL STORAGE AND STARTING
BATTERIES.
DANGER
SOME DIAGNOSTIC TESTING MAY BE DONE ON
ENERGIZED CIRCUITS. ELECTRICAL SHOCK
CAN OCCUR IF NOT TESTED PROPERLY.
TESTING TO BE DONE BY QUALIFIED
TECHNICIANS ONLY.
6757A7201
SERVICE TEST DEVICE
This test device is an invaluable aid in quickly diagnosing repairs
to all Airxcel, Inc. roof top air conditioners produced after 1979.