Replacement Manifold Block - Bosch ACS 753 Repair Instructions

ACS 753, ACS 763, ACS 863 Service Manual

Replacement Manifold Block

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
w h e n d i s c o n n e c t i n g h o s e s .
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 manifold block. See Figure 4-4.
In most cases, the manifold block does not
have to be removed from the unit for repair.
Solenoids and check valves can be replaced
without complete removal of the block from the
unit. When this is possible, remove and replace
the faulty component in place, after following
steps 1 through 2 in Removing Manifold Block.
The remaining steps (3-5) outline the procedure
for removing the entire manifold block. See
Figure 4-4.
If the injector manifold is being repaired, refer
to the Replacement Manifold Solenoid or
Replacement Manifold Check Valve as needed.
When installing hoses, solenoids, and check
valves, replace the O-rings and use thread
sealant where necessary.
Robert Bosch GmbH
Plumbing and Mechanical
Removing Manifold Block
1. Disconnect the unit from the power source.
2. Remove the front plastic covers.
3. Disconnect all hoses from the manifold
block.
4. Disconnect all wires from the block
components.
5. Remove the manifold block.
Installing Replacement Manifold Block
See Figure 4-4 while performing the following
procedures.
1. Connect the hoses and lines to the manifold
block. Refer to Figures 4-1, 4-3, and 4-4 for
the proper location of the hoses.
2. Reconnect all wiring as shown in Figure 4-4.
3. Mount the front plastic covers.
4. Connect the unit to the power source,
perform a function test, and check for leaks.
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SP00D00609 2018-03-26