Troubleshooting; Fluid Modules - Graco PCF Instructions - Parts Manual

Troubleshooting

NOTE: Check all possible solutions in the chart
below before you disassemble the system.

Fluid Modules

Problem
No outlet pressure
High outlet pressure
Air leaks from fluid module
313377L
Troubleshooting for individual regulators and flow
meters is discussed in their separate manuals; refer to
Related Manuals on page 3. Also refer to Error Codes
and Troubleshooting, page 55, for detailed information
on how error codes are communicated.
Cause
Air pressure low
No "Gun On" signal from automation
unit
No air signal to air diaphragm
False signal being sent to control
Needle/seat is worn
Loose air connections
Worn gaskets
Troubleshooting
Solution
Verify air pressure is above 60 psi
(0.4 MPa, 4 bar)
Check output and wiring from auto-
mation unit
Check for loose/disconnected con-
nector to V/P valve; tighten
Check outlet pressure sensor output;
verify that it corresponds to zero
pressure; replace sensor and/or
amplifier
Rebuild regulator; replace needle/
seat
Check air connections; tighten if nec-
essary
Check/replace gaskets on V/P and
solenoid valve
51