Graco XM Series Operation page 64

Troubleshooting
Alarm Codes and Troubleshooting
See XM Plural-Component Sprayers Repair-Parts manuals for non-alarm based troubleshooting.
Alarm
Code Alarm Problem
DAAX Pump runaway, above 80
DABX cpm for 10 sec.
DDAX Pump cavitation; dives
DDBX more than 1/2 of stroke.
F7AX System Detects
F7BX Unexpected Pump
Movement (Fluid Flow).
F8RX No movement occurred in
circulation mode
P1AX Pressure low.
P1BX
P4AX Pressure high.
P4BX
P4RE Pressure high.
P5RE Pressure high.
P9AX A pump pressure is
abnormally low compared
to B pump pressure.
64
When Active
Always No material in pump or lines;
no fluid restriction.
Spray No fluid or valve closed.
Material is too cold or thick.
Pump inlet check valve not
closing.
Feed pump not providing
material.
Inlet strainer plugged (if used).
Spray Recirculation valve or dosing
valve open or leaking for more
than five seconds.
Circulation Pump did not move for 5
seconds while in circulation.
User may have attempted to
spray in circulation mode.
Spray, Pump Fluid pressure is below 1000
Test, Leak psi (7 MPa, 70 bar) for spray
Test mode, or below 1500 psi (10.3
MPa, 103 bar) for test modes).
Always Fluid pressure is above
maximum.
Recirculation Pressure is above maximum
advisory limit of 3000 psi (21
MPa, 210 bar) on A side.
Recirculation Pressure is above maximum
warning limit of 5200 psi (35.9
MPa, 359 bar) on A side.
Spray A air motor is icing up causing
restriction and lower fluid
pressure.
A pump is binding.
A motor is hanging up.
Cause
Refill material in tank or hoses;
install fluid tip.
Refill supply and open inlet valve.
Increase material temperature to
reduce viscosity. Follow Heat
Fluid, page 40. Shear material
with agitation to reduce viscosity.
Clear debris from check valve. Or
replace ball, seat, and seal.
Check feed pump (if used).
Check and clean strainer. See
your proportioner repair manual.
Close or repair recirculation valve,
and run Pump Test. Follow Pump
and Metering Test, page 51.
Use spray mode for spraying.
Increase main air regulator.
Decrease main air regulator.
Decrease pump air regulator
pressure.
Decrease pump air regulator
pressure.
Open the air motor de-ice bleed
air controls. Allow ice to melt. Dry
compressed air. Heat compressed
air.
Use a smaller tip.
Repair lower. See manual your
proportioner repair.
Repair air motor. See your
proportioner repair manual.
Solution
312359R