Electrical - Graco 25T804 Operation, Parts

Electrical

Symptom: Sprayer does not run, stops
running, or will not shut off.
Problem
Sprayer does not run at all.
Sprayer will not shut off after
reaching or exceeding
maximum pressure.
Basic electrical problems
3A8179C
1.
2.
3.
4.
What to Check
Check battery charge.
Check pressure control
connections.
Check pressure control.
Check motor leads.
Check pressure control.
Motor leads are securely
fastened and properly mated
Troubleshooting
Perform Pressure Relief Procedure,
page 12.
Install fully charged battery, see Battery
Installation and Removal, page 17.
Turn the ON/OFF switch OFF, wait 30
seconds and then turn power back ON
again (this ensures sprayer is in normal
run mode).
Turn pressure control knob clockwise
1/2 turn.
How to check
Press charge level indicator on
battery. Charge battery or
install a new battery, if needed.
Make certain connector is
clean and firmly connected.
Connect known good pressure
control. If the motor runs,
replace pressure control.
Make certain terminals are
clean and firmly connected.
Disconnect pressure control, if
sprayer still runs, replace
control board. If the sprayer
stops, replace pressure
control.
Replace loose terminals; crimp
to leads. Be sure terminal are
firmly connected.
Clean circuit board terminals.
Securely reconnect leads.
31