ACS 753, ACS 763, ACS 863 Service Manual
SP00D00609 2018-03-26Robert Bosch GmbH
75
Plumbing and Mechanical
Replacement Compressor
WARNING: Disconnect the unit from
the power source before beginning
service work. Incorrect use or
connections can cause electrical
shock.
WARNING: Wear safety goggles
when working with refrigerants.
Refrigerants can cause eye injury.
WARNING: Use extreme caution
when disconnecting hoses.
Pressurized refrigerant may be
present in hoses. Point hoses away
from you and anyone nearby.
Instructions
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.
Removing Compressor
1. Disconnect the unit from its power source.
2. Open the service rear door.
3. Disconnect the copper line from the
compressor.
WARNING: There may be pressure in
the copper line.
4. Remove the compressor mounting bolts and
washers and slide the compressor away
from the rear retainer.
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.
CAUTION: To prevent personal injury,
use caution when removing the
compressor. The capacitor may still
be energized.
Installing Replacement Compressor
Refer to Figure 4-1 during this installation.
1. Install the rubber mounts (included in kit)
into the base of the compressor. Place two
metal sleeves in the front mounts only.
2. Place the compressor into the unit. It may be
necessary to lubricate the rear compressor
mounts. If needed, apply a small amount of
light oil, such as compressor oil, to the top
and bottom of the rubber mount.
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 manifold
block. Replace the O-rings where used on
the hoses.
5. Secure the compressor into place with the
hardware in the RA 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.
PLUMBING AND MECHANICAL SYSTEM REPAIR
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