Replacement Manifold Block - Bosch ACS 561 Repair Instructions

ACS 561 Service Manual

Replacement Manifold Block

Disconnect the unit from the power
source before beginning service
work. Incorrect use or connections
can cause electrical shock.
Wear safety goggles when working
with refrigerants. Refrigerants can
cause eye injury.
Use extreme caution when discon-
necting hoses. Pressurized refriger-
ant may be present in hoses. Point
hoses away from you and anyone
nearby.
Instructions
These instructions outline the steps to replac-
ing the existing manifold block. See Figure 4-4.
In some cases, the manifold block does not
have to be removed from the unit. Solenoids
and check valves can be replaced without
complete removal of the block from the panel.
When this is possible, remove and replace the
faulty component in place, after following steps
1 through 5 in "Removing the Manifold Block."
If the injector manifold is being repaired, refer
to the Replacement Manifold Solenoid or Re-
placement Manifold Check Vlave as needed.
When installing hoses, solenoids, and check
valves, replace the o-rings and use thread seal-
ant where necessary.
Robert Bosch GmbH
Plumbing and Mechanical
Removing the Manifold Block
1. Disconnect the unit from the power source.
2. Remove the shroud.
3. Close the tank valve.
4. Depressurize the unit.
5. Close the tank liquid valve and remove the
wires from the Tank Fill/Liquid solenoid (S4).
6. If the entire manifold block must be re-
moved, remove the knobs from the front of
the panel.
7. Disconnect the black high and low side
hoses, vacuum pump hose, tank fill/liquid
hose, and recover hose.
8. Disconnect all wires from the block.
9. Remove nuts and washers from the ball
valves holding the mainfold block to the
panel, and save for reassembly.
10. Remove the manifold block.
Installing the Replacement Manifold Block
See Figure 4-4 while performing the following
procedures.
1. Locate the mainfold block so the shafts of
the inlet valves protrude from the front of
the panel. Secure with washer and nuts
removed during removal.
2. Connect the recover, tank fill/liquid, and
vacuum pump hoses. Refer to Figure 4-2
for the proper location of the hoses.
3. Reconnect all wiring as shown in Figure 3-9.
4. Open the tank valve.
5. Connect unit to the power source, perform
a function test, and check for leaks.
6. Replace the shrouding.
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SP00D00517 2018-07-11