ACS 653, ACS 663 Service Manual
SP00D00624 2021-04-08 Robert Bosch GmbH
86
Plumbing and Mechanical
These instructions outline the steps to replace
the existing compressor. See Figure 4-1,
Plumbing Interconnection Diagram. Refer to this
schematic of the unit plumbing and mechanical
system when performing all removals and
replacements of plumbing or other mechanical
parts and assemblies.
1. Disconnect the unit from its power source.
2. Open the service rear door.
3. Disconnect the copper line from the
compressor.
.
4. Remove the compressor mounting nuts and
washers.
5. Disconnect the hoses from the compressor.
6. Disconnect the compressor pigtail from the
COMP connector on the main harness.
7. Remove the compressor from the unit.
.
Refer to Figure 4-1 during this installation.
1. IInstall the rubber mounts into the base of
the compressor. Place four metal sleeves
(included in kit).
2. Place the compressor into the unit.
3. Connect the compressor pigtail to the
COMP connector on the main wire harness.
4. Refer to the illustration and install the hoses
connecting the compressor to the main
manifold. Replace the O-rings where used
on the hoses.
5. Secure the compressor into place with the
hardware in the kit.
6. With the O-rings in place, connect the
copper line to the discharge side of the unit.
7. Close the service rear door.
8. Connect the unit to the power source,
perform a function test, and check for leaks.
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