Replacement Flush + N2H2 Manifold - Bosch ACS 753 Repair Instructions

Plumbing and Mechanical

Replacement Flush + N2H2 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
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 flush + N2H2 manifold. See Figures 4-3
through 4-6.
When installing hoses, solenoid(s), or check
valve, replace the O-rings and use thread
sealant where necessary.
Removing the Flush + N2H2 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 flush
+ N2H2 manifold to the panel of the unit.
4. Disconnect the plastic hose inlet lines from
the manifold block.
5. Remove the coils cables from the manifold.
6. Remove the complete block.
SP00D00609 2018-03-26
extreme caution
82
ACS 753, ACS 763, ACS 863 Service Manual
Installing the Flush + N2H2 Manifold
1. Attach the inside plastic hose to the flush +
N2H2 manifold.
2. Connect the wiring to the injector block
solenoid(s).
3. Install the flush + N2H2 manifold to the
panel and secure with two screws.
4. Mount the front plastic covers.
5. Connect the unit to the power source,
perform a function test, and check for leaks.
Hose
Connections
N2H2 Inlet
Solenoid (S19)
N2H2 Vent
Solenoid (S20)
Figure 4-6. Flush + N2H2 Manifold
High and Low Flush
Ports
N2H2 or N2
inlet port
Robert Bosch GmbH