Graco Mark X 249628 Instrucciones página 33

Electrical
DIGITAL CONTROL BOARD
DISPLAY STATUS LIGHT
Displays high
pressure when
prime valve is
open and there
is no pressure
in sprayer
E=02 Blinks 2 x repeatedly
E=03 Blinks 3 x repeatedly
311421E
INDICATION
- Improper pressure
signal to control
Control board is
receiving excessive
pressure signal
from transducer.
Transducer may be
damaged or fluid flow
path may be clogged
Transducer or trans-
ducer connection
error
.
WHAT TO DO
Open prime valve. Connect a known good transducer in
place of the sprayer transducer. Set sprayer ON. Replace
.
transducer If sprayer runs. Replace control board If sprayer
.
does not run
1 Check fluid path for clogs, such as a clogged filter.
2 Open prime valve.
3 Use airless paint spray hose with no metal braid,
3/8 in. x 50 ft minimum. Smaller hose or metal braid
hose may result in high-pressure spikes.
4 Replace transducer if fluid path is not clogged and
proper hose is used.
.
1 Check transducer connection.
2 Disconnect and reconnect transducer plug to ensure
good connection with control board socket. Check that
transducer contacts are ok.
3 Open prime valve. Connect a known good transducer
in place of the sprayer transducer. Set sprayer ON.
Replace transducer If sprayer runs. Replace control
board If sprayer does not run.
Troubleshooting
33