Graco 257100, Operation

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Troubleshooting
3A0245A 23
Drywall feed pump does not
run at all Is motor overheating? NOTE: Motor must be cooled down for the test.
1. Allow unit to cool. If unit runs when cool, correct
cause of overheating. Keep unit in cooler location
with good ventilation. If unit still does not run, follow
Step 1.
2. Check fan and air intake.
3. Check motor thermal switch.
4. Check thermal device leads (yellow wires) at control
board.
5. Disconnect thermal device connector from control
board socket. Make sure contacts are clean and
secure.
Check Motor Thermal Switch: Unplug thermal
wires. Set meter to ohms. Meter should read 6.2k
ohms. If reading is not correct, replace motor.
6. Replace motor control board.
Digital display shows E=06
Control board status light
blinks 6 times repeatedly
Drywall feed pump does not
run at all Control is not receiving a motor
position sensor signal 1. Turn power OFF.
2. Disconnect motor position sensor and inspect for
damage at connectors.
3. Reconnect sensor.
4. Turn power ON. If error continues, replace motor.
Digital display shows E=09
Control board status light
blinks 9 times repeatedly
Drywall feed pump does not
run at all Check to see if control board is
over heating. 1. Make sure motor air intake is not blocked.
2. Make sure fan has not failed.
3. Make sure control board is properly connected
to back plate and that conductive thermal paste
is used on power components.
4. Replace control board.
5. Replace motor.
Digital display shows E=10
Control board status light
blinks 10 times repeatedly
TYPE OF PROBLEM WHAT TO CHECK HOW TO CHECK
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ti13140a