ACS 753, ACS 763, ACS 863 Service Manual
SP00D00609
2018-03-26
Robert Bosch GmbH
81
Plumbing and Mechanical
Replacement Injection Manifold
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 injection manifold. See Figures 4-3 through
4-5. If an injection block is being repaired,
refer to
Repairing or Replacing a Solenoid
or
Replacing a Check Valve
on the following
two pages, as applicable, once the block is
removed.
When installing hoses, solenoid(s), or check
valve, replace the O-rings and use thread
sealant where necessary.
Removing the Injection Manifold
1. Disconnect the unit from the power source.
2. Remove the front plastic covers and the
service hoses.
3. Remove the two screws securing the
injection manifold to the panel of the unit.
4. Disconnect the high- and low-side inlet lines
from the manifold block.
5. Remove the injection manifold from the unit.
6. Remove the wiring from the oil injection
solenoid(s).
7. Remove the inside high- and low-side inlet
lines.
Installing the Injection Manifold
1. Attach the inside high- and low-side lines to
the injection manifold.
2. Connect the wiring to the injector block
solenoid(s).
3. Install the injection manifold to the panel
and secure with two screws.
4. Attach the high- and low-side inlet hoses to
the manifold block.
5. Attach the outside high- (red) and low-side
(blue) service hoses to the injection manifold
assembly.
6. Mount the front plastic covers.
7. Connect the unit to the power source,
perform a function test, and check for leaks.
Figure 4-5. Injection Manifold
High and Low
Service Hose Ports
Bottle Hose
Connections
POE Solenoid
(S14)
PAG Solenoid
(S2)
Dye
Solenoid (S15)
Contaminant recovery
outlet port
(ACS 863 only)
