Graco LineLazer ES 1000 Operation - Repair - Parts page 28

Troubleshooting
Problem
Sprayer does not run at all
AND
Control board status light blinks 2
times repeatedly
Sprayer does not run at all
AND
Control board status light blinks 3
times repeatedly
28
What to Check
Check transducer or transducer
connections
Check transducer or transducer
connections (control board is
not detecting a pressure signal).
How to check
Make sure there is no pressure in the system (see
Pressure Relief Procedure, page 13). Check fluid path
for clogs, such as clogged filter.
Use airless paint spray hose with no metal braid. A small
hose or metal braid hose may result in high-pressure
spikes.
Turn ON/OFF switch OFF and disconnect power to
sprayer by unplugging power cord and disconnecting
battery.
Check transducer and connections to control board.
Disconnect transducer from control board socket. Check
that transducer and control board contacts are clean and
secure.
Reconnect transducer to control board socket. Connect
power, turn ON/OFF switch ON and control knob
1/2 turn clockwise. If sprayer does not run properly, turn
ON/OFF switch OFF and go to next step.
Install new transducer. Connect power, turn ON/OFF
switch ON and control knob 1/2 turn clockwise. Replace
control board if sprayer does not run properly.
Turn ON/OFF switch OFF and disconnect power to
sprayer by unplugging power cord and disconnecting
battery.
Check transducer and connections to control board.
Disconnect transducer from control board socket. Check
to see if transducer and control board contacts are clean
and secure.
Reconnect transducer to control board socket. Connect
power, turn ON/OFF switch ON and control knob to 1/2
turn clockwise. If sprayer does not run, turn ON/OFF
switch OFF and go to next step.
Connect a confirmed working transducer to control
board socket.
Turn ON/OFF switch ON and control knob to 1/2 turn
clockwise. If sprayer runs, install new transducer.
Replace control board if sprayer does not run.
Check transducer resistance with an ohmmeter (less
than 9k ohm between red and black wires and 3-6k ohm
between green and yellow wires).
3A4603C Operation, Repair, Parts