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Troubleshooting
3A2098H 63
Flow Meter
Fluid Regulator
Problem Cause Solution
No flow measurement Flow meter pick-up sensor loose Tighten flow meter pick-up sensor
Flow too low Verify flow rate is above minimum
for the installed flow meter
Loose wiring Verify connection from flow meter to
FCM
Damaged flow meter pick-up sensor Replace pick-up sensor
False measurement Flow meter not calibrated Calibrate flow meter, page 42
System not grounded properly Verify system ground
Noisy power source Verify clean power supply power to
main enclosure
Flow reported is not correct or
inconsistent
Flow meter not calibrated Calibrate flow meter, page 42
Flow meter is worn Replace flow meter
Problem Cause Solution
No pressure regulation Damaged diaphragm Replace diaphragm
Leaking or dirty seat Replace cartridge, or clean seat
No fluid flow Damaged valve actuator Replace valve actuator
Pressure creeps above setting Metal chip or contamination
between ball and seat
Replace cartridge, or clean seat
area
Damaged diaphragm Replace diaphragm
Damaged o-ring or improper seal Replace the o-ring under the seat
Damaged or clogged air regulator or
line
Clear obstruction in line. Service
regulator if necessary
Leaking or dirty seat Replace cartridge, or clean seat
Large change in inlet pressure Stabilize regulator inlet pressure
Pressure drops below setting Empty/clogged supply line Fill/flush supply line
Damaged or clogged air regulator or
line
Clear obstruction in line. Service
regulator if necessary
Using valve beyond its rated flow
capacity
Install valve for each spray valve or
dispensing valve
Large change in inlet air or fluid
pressure
Stabilize air and fluid regulator inlet
pressures
Fluid leaks from spring housing Loose fluid housing Tighten the four cap screws
Damaged diaphragm Replace diaphragm
Chatter
Excessive pressure differential be
tween pump and valve
Reduce pump pressure to not more
than 2000 psi (14 MPa, 138 bar)
greater than required valve pres-
sure.
Excessive flow rate
Reduce fluid flow through regulator.
Connect only one spray gun or dis-
pense valve to each fluid regulator