Graco Mark V Premium - 110 V Models: Electrical Troubleshooting; Voltage, Switch, and Thermal Checks (110 V); Potentiometer Disconnection (110 V)

Troubleshooting
18 3A2333B
110V Models:
110-120 AC
V
-
+
-
110-120 AC
V
-
+
-
STEP 1:
Plug power cord in
and turn switch ON.
Connect wires to
control board and
on/off switch. Turn
meter to AC Volts.
STEP 2:
Plug power cord in
and turn switch ON.
Connect wires to
control board and
on/off switch. Turn
meter to AC Volts.
Black
Black
Black
Black
On/Off
Switch
Control
Board
White
Power Cord
Control
Board
On/Off
Switch
Power Cord
White
-
100k ohm
+
-
STEP 3:
Check motor thermal switch.
Unplug yellow wires. Meter
should read according to
Resistance Table on page 16.
NOTE: Motor should be cool
during reading.
STEP 4:
Plug power cord
in and turn switch
ON. Disconnect
potentiometer.
Yellow
Black
Control
Board
Control
Board
Thermal
Switch
Motor