Graco RTX5000 Operation, Parts page 23

Problem
Power switch is on and sprayer
is plugged in, but motor does
not run, and pump does not
cycle. (cont'd)
Sprayer continues to run when
gun trigger is released.
Sprayer does not start when
gun is triggered.
Sprayer cycles ON and OFF
when trigger is released.
or
Sprayer cycles ON and OFF
when gun is triggered.
3A3265A
Cause
Material and/or water is frozen
or hardened in pump.
Prime valve is plugged
Gun is plugged.
Pressure switch is damaged.
Compressed air system leak.
Flow switch is stuck.
Flow switch is stuck.
Pressure switch is damaged.
Compressed air system leak.
Flow switch is stuck.
Check valve is damaged.
Troubleshooting
Solution
Unplug sprayer from outlet. If
frozen do NOT try to start
sprayer until it is completely
thawed or you may damage
the motor, control board and/or
drivetrain.
Make sure power switch is
OFF. Place sprayer in a warm
area for several hours. Then
plug in powercord and turn
sprayer ON. Slowly increase
pressure setting to see if motor
will start.
If material is hardened in
sprayer, pump or pressure
switch may need to be
replaced. Take sprayer to
Graco authorized service
center.
Remove and clean prime
valve.
Disassemble and clean gun.
Replace pressure switch.
Locate leak; check gun, twin
line hose, or internal system.
Reseal leaky fitting or replace
hose.
Replace flow switch.
Replace flow switch.
Replace pressure switch.
Locate leak; check gun, twin
line hose, or internal system.
Reseal leaky fitting or replace
hose.
Replace flow switch.
Replace check valve.
23