User's Manual

Troubleshooting

36 332144C

Proportioner

Before performing any troubleshooting procedures:

1. Shut off Heater Power.

2. Shut off Motor Power.

3. Relieve pressure, page 23.

4. Allow equipment to cool.

Try the recommended solutions in the order given for

each problem, to avoid unnecessary repairs. Also,

determine that all circuit breakers, switches, and con-

trols are properly set and wiring is correct before assum-

ing there is a problem.

PROBLEM CAUSE SOLUTION

Reactor does not operate. No power. Plug in both power cords.

Cycle Motor Power and Heater

Power off , then on

to reset both breakers.

Motor does not operate. Power turned on while function knob

set to a run position.

Set function knob to Stop/Park ,

once status LED turns on. Then

select desired function.

Loose connection on control board. Check connection at motor power

connections on bottom board. See

. 12, page 45.

Worn brushes. Check both sides. Replace brushes

worn to less than 1/2 in. (13 mm), see

page 54.

Broken or misaligned brush springs. Realign or replace, page 54.

Brushes or springs binding in brush

holder.

Clean brush holder and align brush

leads for free movement.

Shorted armature. Replace motor, page 53.

Check motor commutator for burn

spots, black pitting, or other damage.

Remove motor. Have motor shop

resurface commutator, or replace

motor, page 53.

Failed control board. Replace board. See page 44.

Pump output low. Plugged fluid inlet strainer. Clear, see page 24.

Leaking or plugged piston valve or

intake valve in displacement pump.

Check valves. See pump manual.