Graco Geo Blaster GB1200, Операция и комплектующие

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Troubleshooting
3A4167C 21
No blast air flow when the blast con-
trol switch is engaged. The water
pump
does not cycle while the blast
control switch is engaged.
Inadequate air supply. Make sure the air inlet pressure
gauge reads 100-150 psi (6.8–10 bar,
0.68–1.0 MPa). If the gauge does not
read 100–150 psi, check the air com-
pressor for proper setup.
Emergency Stop is engaged. Disengage the Emergency Stop.
E
lectric blast control circuit is mal-
functioning.
Inspect the hose cable for damaged
or shorted wiring. Check the battery
and control panel connections. Make
sure the DC power source is 12V.
Check the current flow in the circuit. If
current exists, replace the air relay
assembly.
P
neumatic blast control circuit is
malfunctioning.
S
ee
“Air Line Tubing” on page 46.
The blast control switch is not
engaged, but blasting occurs. Main air regulator is malfunctioning
or is stuck open. Repair main air regulator.
B
last control tubing is not connected
properly.
Ensure air tubing is routed and con-
nected properly. See “Air Line Tub-
ing” on page 46.
Electric blast control circuit is mal-
functioning. Inspect hose cable for damaged or
shorted wiring.
Pneumatic blast control circuit is
malfunctioning.
S
ee
“Air Line Tubing” on page 46.
Air relay is mechanically hung in
active position. Engage the e-stop (push it down). If
blasting stops replace the air relay.
Problem Cause Solution