Graco 3A2098H important safety instructions Troubleshooting, Problem Cause Solution

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 67, for detailed information on how error codes are communi- cated.

Fluid Plates

Problem	Cause	Solution
No outlet pressure	Air pressure low	Verify air pressure is above 60 psi
		(410 kPa, 4.1 bar)
	No “Valve On” signal from automation	Check output and wiring from auto-
	unit	mation unit
	No air signal to air diaphragm	Check for loose/disconnected con-
		nector to Voltage to Pressure (V/P)
		Transducer; tighten
	False signal being sent to control	Check outlet pressure sensor output;
		verify that it corresponds to zero
		pressure; replace sensor and/or
		amplifier
High outlet pressure	Fluid regulator needle/seat is worn	Rebuild fluid regulator; replace nee-
		dle/ seat
Air leaks from fluid plate	Loose air connections	Check air connections; tighten if nec-
		essary
	Worn gaskets	Check/replace gaskets on Voltage to
		Pressure (V/P) Transducer and sole-
		noid valve

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