Troubleshooting

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.

110-120 AC

V

-

STEP 2:

Plug power cord in and turn switch ON. Connect wires to control board and on/off switch. Turn meter to AC Volts.

100k ohm

-

STEP 3:

Check motor thermistor. Unplug yellow wires. Meter should read according to Resistance Table on page 17. NOTE: Motor should be cool during reading.

-

 

 

 

Thermal

 

 

-

 

 

 

Black

 

 

Black

Switch

 

 

 

On/Off

+

On/Off

 

+

Switch

 

 

Switch

White

 

White

 

 

Black

 

Black

Motor

Control

 

 

 

 

Control

Power Cord

Board

 

Power Cord

Board

Thermal

 

 

 

 

Switch

 

 

 

 

 

To Optional

Potentiometer

 

Display

 

 

 

Motor

 

 

 

 

 

 

 

 

Pressure

 

 

 

 

Transducer

 

 

 

 

Black

 

 

 

 

AutoClean

Motor

 

 

 

 

Leads

 

 

 

WatchDog Switch:

 

 

 

 

 

 

 

 

On - Open

Motor

Neutral

 

 

Off - Closed

 

 

 

 

 

 

 

Sensor

 

 

 

 

Leads

 

 

 

 

 

 

 

 

Switch:

 

 

 

 

15 Amp - Closed

Green/Ground

 

 

 

20 Amp - Open

 

 

 

 

 

 

 

Black

On/Off

 

 

 

Switch

 

 

 

 

 

 

White

 

Black +

 

 

 

 

GFI Filter Coil

 

 

 

 

 

 

Green/Ground

Power Plug

 

 

 

 

- +

Yellow

Control

Board

STEP 4:

Plug power cord in and turn switch ON. Disconnect potentiometer.

Control

Board

Black

20

3A0157B

Page 20
Image 20
Graco ti14838b, ti15034a, ti15036b, ti15035b important safety instructions Step