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Troubleshooting
44
309738L
Flow Meter
Regulator
Problem
Cause(s)
Possible Solution(s)
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 flow meter selected
Loose wiring
Verify wiring connections from flow
meter to junction box
Damaged flow meter pick-up sensor
Replace pick-up sensor
False measurement
Flow meter not calibrated
Calibrate flow meter
Flow meter cable shield wire not
connected
Verify shielding to ground
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
Flow meter is worn
Replace flow meter
Problem
Cause(s)
Possible Solution(s)
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 (air-operated regulator only)
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 (air-operated regulator only)
Clear obstruction in line. Service
regulator if necessary
Using valve beyond its rated flow
capacity
Install valve for each spray gun or
dispensing valve
Large change in inlet pressure
Stabilize regulator inlet pressure
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 gun
Reduce pump pressure to not more
than 2000 psi (14 MPa, 138 bar)
greater than required gun pressure.
Excessive flow rate
Reduce fluid flow through regulator.
Connect only one spray gun or dis-
pensing valve to each fluid regulator