![Graco LineLazer IV 3900 Скачать руководство пользователя страница 20](http://html.mh-extra.com/html/graco/linelazer-iv-3900/linelazer-iv-3900_repair-parts-list-manual_2250945020.webp)
Control Board Diagnostics
20
312195B
Control Board Diagnostics
Digital Display Messages
Relieve pressure before repair; page 6. No display does not mean that sprayer is not pressurized.
After a fault, follow these steps to restart sprayer:
1.
Correct fault condition.
2.
Turn sprayer OFF.
3.
Turn sprayer ON.
Display
Sprayer Operation
Indication
Action
No Display
Sprayer may be pres-
surized.
Loss of power or dis-
play not connected.
Check power source. Relieve pressure before
repair or disassembly. Verify display is con-
nected.
Sprayer may be pres-
surized.
Pressure less than 200
psi (14 bar, 1.4 MPa).
Increase pressure as needed.
Sprayer is pressur-
ized. Power is applied.
(Pressure varies with
tip size and pressure
control setting.)
Normal operation.
Spray.
Sprayer stops. Engine
is running.
Exceeded pressure
limit.
Remove any filter clogs or flow obstructions.
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 connections. Clean contacts.
2.
Measure 1.2 +0.2 Ohms (LineLazer IV 3900);
1.7 +0.2 Ohms (LineLazer IV 5900) across
clutch field at 70°F.
3.
Replace clutch field assembly.
ti631
4
a
psi
bar
MPa
ti6315a
ti6316a
ti631
7
a
ti6318a