Flow Meter; Fluid Regulator - Graco PrecisionSwirl Instructions-Parts List Manual

Flow Meter

Problem
No flow measurement
False measurement
Flow reported is not correct or
inconsistent

Fluid Regulator

Problem
No pressure regulation
No fluid flow
Pressure creeps above setting
Pressure drops below setting
Fluid leaks from spring housing
Chatter
3A2098S
Cause
Flow meter pick-up sensor loose
Flow too low
Loose wiring
Damaged flow meter pick-up sensor
Flow meter not calibrated
System not grounded properly
Noisy power source
Flow meter not calibrated
Flow meter is worn
Cause
Damaged diaphragm
Leaking or dirty seat
Damaged valve actuator
Metal chip or contamination
between ball and seat
Damaged diaphragm
Damaged o-ring or improper seal
Damaged or clogged air regulator or
line
Leaking or dirty seat
Large change in inlet pressure
Empty/clogged supply line
Damaged or clogged air regulator or
line
Using valve beyond its rated flow
capacity
Large change in inlet air or fluid
pressure
Loose fluid housing
Damaged diaphragm
Excessive pressure differential be
tween pump and valve
Excessive flow rate
Troubleshooting
Solution
Tighten flow meter pick-up sensor
Verify flow rate is above minimum
for the installed flow meter
Verify connection from flow meter to
FCM
Replace pick-up sensor
Calibrate flow meter, page 46
Verify system ground
Verify clean power supply power to
main enclosure
Calibrate flow meter, page 46
Replace flow meter
Solution
Replace diaphragm
Replace cartridge, or clean seat
Replace valve actuator
Replace cartridge, or clean seat
area
Replace diaphragm
Replace the o-ring under the seat
Clear obstruction in line. Service
regulator if necessary
Replace cartridge, or clean seat
Stabilize regulator inlet pressure
Fill/flush supply line
Clear obstruction in line. Service
regulator if necessary
Install valve for each spray valve or
dispensing valve
Stabilize air and fluid regulator inlet
pressures
Tighten the four cap screws
Replace diaphragm
Reduce pump pressure to not more
than 2000 psi (14 MPa, 138 bar)
greater than required valve pres-
sure.
Reduce fluid flow through regulator.
Connect only one spray gun or dis-
pense valve to each fluid regulator
67