Electrical - Graco 695 Operation Manual

Electrical

Symptom: Sprayer does not run, stops running, or will
not shut off.
Perform Pressure Relief Procedure; page 13.
1. Plug sprayer into correct voltage, grounded outlet.
2. Set power switch OFF for 30 seconds and then ON
again (this ensures sprayer is in normal run mode).
3. Turn pressure control knob clockwise 1/2 turn.
4. View digital displayy.
Keep clear of electrical and moving parts during trou-
bleshooting procedures. To avoid electrical shock haz-
ards when covers are removed for troubleshooting, wait
5 minutes after unplugging power cord for stored elec-
tricity to dissipate.
TYPE OF PROBLEM
Sprayer does not run at all
Display is blank
ProGuard status light and
control board status light never
light
Sprayer does not run at all
Display shows CODE 02
Control board status light blinks
2 times repeatedly
332916E
WHAT TO CHECK
See flow chart, page 33.
Check transducer or transducer
connections
ProGuard Status Light
For units without a display, see ProGuard (page 18). If
there is a voltage supply issue (CODE 04, 08, or 17), the
ProGuard status light will blink continuously when the
ON/OFF switch is ON. To determine which code (or any
other code besides voltage supply) refer to the control
board status light. Turn the ON/OFF switch OFF, remove
the control cover then turn power back ON. Observe the
status light. Blinking LED total count equals the error
code (for example: two blinks equals CODE 02).
HOW TO CHECK
1. Make sure there is no pressure in the system (see
Pressure Relief Procedure, page
path for clogs, such as clogged filter.
2. Use airless paint spray hose with no metal braid
1/4 in. x 50 ft minimum. Smaller hose or metal braid
hose may result in high-pressure spikes.
3. Set sprayer to OFF and disconnect power to
sprayer.
4. Check transducer and connections to control board.
5. Disconnect transducer from control board socket.
Check that transducer and control board contacts
are clean and secure.
6. Reconnect transducer to control board socket.
Connect power, set sprayer ON and control knob
1/2 turn clockwise. If sprayer does not run properly,
set sprayer to OFF and go to next step.
7. Install new transducer. Connect power, set sprayer
ON and control knob 1/2 turn clockwise. Replace
control board if sprayer does not run properly.
Troubleshooting
Control Board Status Light
13
). Check fluid
27