Graco XM Series Operation page 70

Troubleshooting
Possible Alarms by Mode
The following table outlines the alarms that you may receive while operating the system. The alarms are categorized
according to each mode.
Mode
Spray
Park
Circulation
Pump Test
70
Dosing valves close for startup test; green light blinks.
If fluid pressure is under 1000 psi (7 MPa, 70 bar), STOP.
If pumps move (indicating internal leakage), STOP.
If fluid pressure is more than 103% of allowed maximum, air motor shuts off
until fluid pressure drops.
If is pressure more than 110% of allowed maximum, STOP.
Dosing valve A opens, and dosing valve B cycles to maintain ratio.
A and B blue lights illuminate when dosing valves are operating.
If there is not enough B component to hold ratio, dosing valve A closes
momentarily.
If A or B component is more than 5% off ratio setpoint, STOP.
If A dose size is too large, STOP.
A and B dosing valves close momentarily at each pump changeover.
Spray mode turned on with system in Weight Mode and uncalibrated.
Both dosing valves open; A and B blue lights turn on.
User opens circulation valves or sprays gun. When pump reaches bottom
stroke the blue light turns off.
If park does not complete in 10 minutes, turn off air to both motors.
A and/or B dosing valves close and motor air turns on.
If fluid pressure exceeds 3000 psi (21.0 MPa, 210 bar) on the A pump,
receive yellow light advisory.
If fluid pressure exceeds 5600 psi (39.2 MPa, 392 bar) on the A pump,
STOP.
If no movement in 10 minutes, turn off air to both motors.
Pump did not move for 5 seconds while in circulation mode.
Both dosing valves close; green light blinks.
If fluid pressure is under 1000 psi (7.0 MPa, 70 bar), STOP.
If pumps move (indicating leakage) STOP.
Turn on A blue light, open A dosing valve, user opens sampling valve.
Close A dosing valve on upstroke; check for no movement.
Close A dose valve on down stroke; check for no movement.
Open A dose valve and dispense total of 750 ml material, close valve, turn
off blue light.
Repeat for B side.
If both pumps pass pump test, display shows two beakers of 750ml each.
Control Logic Alarms
--
P1AX
F7AX, F7BX
None
P4BX
--
--
R5BE
R1BE, R4BE
QDAE
--
R5DX
--
--
DEAX, DEBX
--
P4AX
P4AX
DEAX, DEBX
F8RX
--
P1AX, P1BX
F7AX, F7BX
--
DFAX
DGAX
--
DFBX, DGBX
--
312359R