Graco ProBell 24Z221 Instructions And Parts page 28

Air controllers
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Repair
Replace the
the Voltage
Voltage to to to Pressure
Replace
Replace
the
Voltage
Note
This part is not used on Manual Air
Controllers.
Follow these directions to replace the voltage to
pressure regulator (41).
1. Follow directions at
2. Remove the turbine air solenoid. See
the Trigger or Auxiliary Solenoid Valve, page
3. Disconnect the cable (44) and tube (50).
4. Remove screws (35) to remove the regulator
assembly, including the bracket (40).
5. Remove screws (40a) to disconnect the regulator
from the bracket.
6. Remove the elbows (10, 12),the muffler (61) and
the reducer bushing (69).
7. Apply thread sealant to the threads on the elbows
(10, 12) and the reducer bushing (69). Tighten
them into the new regulator (41), along with the
muffler (61).
28
Pressure (V2P)
(V2P) Regulator
Pressure
Prepare for Service, page
Replace
Regulator
(V2P)
Regulator
8. Use screws (40a) to attach the new regulator
(41) to the bracket.
9. Use screws (35) to attach the assembly to the
controller box.
10. Reconnect the cable (44) and tube (50).
11. Reinstall the turbine air solenoid. See
24.
the Trigger or Auxiliary Solenoid Valve, page
Also see the calibration procedure on the System
27.
Logic Controller manual, 3A3955, in Inital
Setup/Calibration Screen
Note
For better accuracy, perform a "zero clear"
as detailed in the instruction manual that is
included with the V2P regulator. The unit
should be powered on with no air applied.
Replace
27.
.
3A3954D

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Probell 24z222

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