Graco 233627, Instructions-Parts List Manual

Page: 20 / 40

Control Board Diagnostics
20 309414N
Control Board Diagnostics
Digital Display Messages
After a fault, follow these steps to restart sprayer:
1. Correct fault condition
2. Turn sprayer OFF
3. Turn sprayer ON
No display does not mean that sprayer is not
pressurized. Relieve pressure before repair. See
Pressure Relief Procedure , page 7
DISPLAY SPRAYER OPERATION INDICATION ACTION
No Display Sprayer may be pressur-
ized. Loss of power or display not con-
nected Check power source. Relieve pres-
sure before repair or disassembly.
Verify display is connected.
--------------
Sprayer may be pressur-
ized. Pressure less than 200 psi *14
bar, 1.4 MPa) Increase pressure as needed
Sprayer is pressurized.
Power is applied. (Pressure
varies with tip size and pres-
sure control setting.) Normal operation Spray
Sprayer stops. Engine is
running. Exceeded pressure limit Remove any filter clogs or flow
obstructions. Make sure gun trigger
is locked open if using AutoClean
valve.
Sprayer stops. Engine is
running. Pressure transducer faulty, bad
connection or broken wire. Check transducer connections and
wire. Replace transducer or control
board, if necessary.
Sprayer stops. Engine is
running. High clutch current
1. Check clutch 7-pin bulk-head
connector. Clean contacts.
2. Measure 1.2±0.2
Ω
(LineLazer III
3900); 1.7±0.2
Ω
(LineLazer III
5900) across clutch field at 70°F.
3. Replace clutch field assembly.
Sprayer stops. Engine is
running. Display alternates
E=06. High clutch temperature.
1. If clutch is new, let sprayer cool
down and the restart.
2. inspect clutch. Replace clutch if
there is excessive wear.
3. Remove pump pin, separate pin-
ion housing from clutch housing.
Rotate rotor clockwise to check
for excessive drag.