
Troubleshooting
32
3A6491E
Sprayer does not run at all
AND
Control board status light blinks 3
times repeatedly
Check transducer or transducer
connections (control board is not
detecting a pressure signal).
Turn ON/OFF switch
OFF
and
disconnect power to sprayer.
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).
Sprayer does not run at all
AND
Control board status light blinks 5
times repeatedly
Control is commanding motor to run
but motor shaft does not rotate.
Possibly locked rotor condition, an
open connection exists between
motor and control, there is a problem
with motor or control board, or motor
amp draw is excessive.
1.Remove pump and try to run
sprayer. If motor runs, check for
locked or frozen pump or drive train.
If sprayer does not run, continue to
step 2.
2.Turn ON/OFF switch
OFF
and
disconnect power to sprayer.
3.Disconnect motor connector(s) from
control board socket(s). Check that
motor connector and control board
contacts are clean and secure. If
contacts are clean and secure,
continue to step 4.
4.Set sprayer to OFF and spin motor
fan 1/2 turn. Restart sprayer. If
sprayer runs replace control board.
If sprayer does not run, continue to
step 5.
Problem
What to Check
How to check
Содержание ST MAX II 395 PC Pro
Страница 35: ...Troubleshooting 3A6491E 35 Electrical cont Sprayer Will Not Run See following page for steps ...
Страница 36: ...Troubleshooting 36 3A6491E ...
Страница 49: ...Notes 3A6491E 49 Notes ...
Страница 52: ...Battery Replacement 52 3A6491E Battery Replacement BlueLink Units Only ...
Страница 53: ...Wiring Diagrams 3A6491E 53 Wiring Diagrams 110 120V Models 395EU 490 495 595 ...
Страница 55: ...Wiring Diagrams 3A6491E 55 120V 110V Model 650 ...
Страница 57: ...Notes 3A6491E 57 Notes ...
Страница 63: ...Graco Information 3A6491E 63 ...