Graco 3A2098H important safety instructions Flow Meter

		Troubleshooting
Flow Meter
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	Flow meter not calibrated	Calibrate flow meter, page 42
inconsistent
	Flow meter is worn	Replace flow meter
Fluid Regulator
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	Replace cartridge, or clean seat
	between ball and 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	Clear obstruction in line. Service
	line	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	Clear obstruction in line. Service
	line	regulator if necessary
	Using valve beyond its rated flow	Install valve for each spray valve or
	capacity	dispensing valve
	Large change in inlet air or fluid	Stabilize air and fluid regulator inlet
	pressure	pressures
Fluid leaks from spring housing	Loose fluid housing	Tighten the four cap screws
	Damaged diaphragm	Replace diaphragm
Chatter	Excessive pressure differential be	Reduce pump pressure to not more
	tween pump and valve	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

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