Webasto BCT010300A Service And Repair Manual - page 41
Component Replacement - Refrigeration Unit
www.webasto.us
39
Webasto Product N.A., Inc.
™
9. Component Replacement -
Refrigeration Unit
Figure 36. Refrigeration Unit
9.1
General Information and Safety
Precautions
Refrigeration and air conditioning devices are extremely
complicated by nature. Servicing, repairing, and
troubleshooting these products should be done only by
those with the necessary knowledge, training, and
equipment.
Before replacement of components, a thorough
troubleshooting and diagnosis of the BlueCool Truck
system must be conducted to identify the reason for the
component failure and the correct remedy.
Never service, repair, or troubleshoot
unless you are a professional air
conditioning/refrigeration service person.
Improper servicing can lead to serious
injury or death from fire, electric shock,
or explosion.
Failure to properly remove the
compressor and related components can
result in serious injury or death from
electrocution, fire or sudden release of
refrigerant and oil.
Follow these precautions when removing components
from the refrigeration circuit:
•
Disconnect electrical power.
Switch the power inverter OFF. Ensure it remains
off while working on and around the compressor.
(NOTE: The system may have more than one
power supply.)
•
Be sure refrigerant is recovered using the
appropriate equipment before removing any
of the refrigeration circuit components.
Attempting to remove components before
removing all refrigerant from the system can cause
a sudden release of refrigerant and oil.
Among other things, this can:
•
Cause a variety of injuries including burns and
frost bite.
•
Expose service personnel to toxic gas.
To avoid serious injury or death, be sure to remove and
recover all refrigerant before removing components of
the refrigeration circuit.
9.2
Compressor Replacement
Replace the compressor only after all other possible
causes for compressor malfunction have been ruled out
according to the troubleshooting procedures in Section 5
and Section 6.
Before beginning work, refer to “Compressor
Replacement and System Service” on page 36.
1. Switch the power inverter OFF.
2. Remove refrigeration unit cover.
Be sure refrigerant is recovered using the
appropriate equipment before removing the
compressor. Webasto recommends that the system
be serviced using a recovery, recycling and
recharging station such as a Robinair
®
unit or
similar equipment designed for R134a refrigerant
systems.
3. Remove protection cap on top of compressor.
4. Disconnect wiring. Refer to Fig. 35, on pg. 38 when
reconnecting wires after compressor replacement.
5. Disconnect refrigerant lines from compressor.
Protect open lines with plastic caps or wrap to
prevent the ingress of moisture and contaminates.
6. Remove the band clamp securing the compressor to
the enclosure.
7. Remove the 3 hex-nuts holding the compressor to
the enclosure base.
8. Remove compressor.
9. Inspect compressor for possible contamination by
dirt, water, etc. If contaminated, service system
according to the precautions and recommendations
in Section 6.2.8 after replacing the compressor.
WARNING
WARNING