Troubleshooting; Fluid Plates - Graco PrecisionSwirl Instructions-Parts List Manual

Troubleshooting

Troubleshooting
NOTE: Check all possible solutions in the chart below
before you disassemble the system.
Troubleshooting for individual fluid regulators and flow
meters is also discussed in their separate manuals;
refer to Related Manuals on page 3. Also refer to Event
and Error Codes and Troubleshooting, page 71, for
detailed information on how error codes are
communicated.

Fluid Plates

Problem
No outlet pressure
High outlet pressure
Air leaks from fluid plate
66
Cause
Air pressure low
No "Valve On" signal from automa-
tion unit
No air signal to air diaphragm
False signal being sent to control
Fluid regulator needle/seat is worn
Loose air connections
Worn gaskets
Solution
Verify air pressure is above 60 psi
(410 kPa, 4.1 bar)
Check output and wiring from
automation unit
Check for loose/disconnected
connector to Voltage to Pressure
(V/P) Transducer; tighten
Check outlet pressure sensor output;
verify that it corresponds to zero
pressure; replace sensor and/or
amplifier
Rebuild fluid regulator; replace
needle/ seat
Check air connections; tighten if
necessary
Check/replace gaskets on Voltage to
Pressure (V/P) Transducer and
solenoid valve
3A2098S