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8–1
62-11637
SECTION 8
SERVICE
WARNING
!
APX control system equipped units may
start automatically at any time the
START/ RUN-OFF switch is in the START/
RUN position. Also, the unit may be fitted
with two way communication equipment
that will allow starting of the unit from a
remote location even though the switch
is in the OFF position.
WARNING
!
When performing service or maintenance
procedures: ensure any two way commu-
nication is disabled in accordance with
the manufacturer’s instruction, ensure
the START/RUN-OFF switch is in OFF
position and, whenever practical, discon-
nect the negative battery connection.
WARNING
!
Beware of moving belt and belt driven
components.
WARNING
!
When working with belts, beware of
pinch points.
WARNING
!
Never use air or gases containing oxygen
for leak testing or operating refrigerant
compressors. Pressurized mixtures of air
or gases containing oxygen can lead to
explosion.
CAUTION
!
Disconnect batteries before doing any
electrical welding on unit or chassis to
which unit is attached (trailer, container,
rail car, metal building, etc).
NOTICE
Unit uses R404A and POE oil. The use of
inert gas brazing procedures is manda-
tory for all Carrier Transicold refrigera-
tion units; otherwise compressor failure
will occur. For more information Refer to
Technical Procedure 98-50553-00 Inert
Gas Brazing.
8.1
SECTION LAYOUT
Service procedures are presented herein under the fol-
lowing major sections:
• Scheduled Maintenance -
• Pre-trip Inspection -
• External Surface Service (automatic fresh air
exchange, grille, surround, doors and display
module) -
• Engine And Engine Related Systems Service -
• Refrigerant System Service -
• Compressor and Unloader Service -
• Refrigerant System Component Service -
• Electrical System Component Service -
Refer to the Table of Contents to locate specific topics.
8.2
SCHEDULED MAINTENANCE
For the most reliable operation and for maximum life,
your unit requires regular maintenance. This includes
oil and filter changes, fuel and air cleaner replacement,
coolant replacement and pre-trip inspections. Mainte-
nance is to be performed in accordance with the proce-
dures provided in
Summary of Contents for Transicold X4 7300
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