Troubleshooting
38
3A8429A
When paint is sprayed, coverage is
inadequate.
Material is going on too thin.
Move gun slower.
Choose spray tip with larger hole size.
Choose spray tip with narrower fan.
Make sure gun is close enough to
surface.
Fan pattern varies dramatically while
spraying.
Pressure control switch is worn and
causing excessive pressure variation.
Take sprayer to Graco authorized
service center.
Cannot trigger spray gun.
Spray gun trigger lock is engaged.
Rotate trigger lock to disengage trigger
lock. See page 9.
Paint is coming out of pressure control. Pressure control is worn.
Take sprayer to Graco authorized
service center.
Paint is leaking through drain tube.
Sprayer is over pressurizing.
Take sprayer to Graco authorized
service center.
Paint leaks down outside of pump.
Pump packings are worn.
Replace pump packings with new
ProXChange module. See page 32.
Motor is hot and runs intermittently.
Motor automatically shuts off due to
excessive heat. Damage can occur if
cause is not corrected.
Vent holes in enclosure are plugged or
sprayer is covered.
Keep vent holes clear of obstructions
and overspray and keep sprayer open to
air.
Battery has insufficient charge.
Charge battery.
Motor needs to be replaced.
Take sprayer to Graco authorized
retailer, distributor, or service center.
Sprayer makes no sound when pres-
sure control is ON and ON/OFF switch
is ON (illuminated).
ON/OFF switch light blinks two times
when pressure control is ON. Indicates
incorrect voltage.
Replace battery with charged battery.
Battery has reached end of life. Replace
battery.
Motor damaged, replace motor
assembly.
ON/OFF switch light blinks three times
when pressure control is ON. Indicates
battery temperature is too hot or too
cold.
Allow battery to cool down or warm up to
room temperature.
ON/OFF switch light blinks four times
when pressure control is ON. Indicates
locked rotor condition.
Replace pump and/or motor assembly.
ON/OFF switch light blinks five times
when pressure control is ON. Indicates
motor temperature is too hot.
Allow motor to cool down to room
temperature.
ON/OFF switch does not illuminate
when pressed.
Indicates battery is not installed, has
insufficient charge, or is damaged.
Install battery correctly, ensure battery is
fully charged, or replace battery.
Control board is damaged.
Replace control board.
Problem
Cause
Solution
Содержание GX21 Cordless
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