Graco Reactor E-8p 3A1602H, Instructions - Parts Manual

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Troubleshooting
30 3A1602H
Troubleshooting Chart
Problem Cause Solution
Reactor E-8p does not operate. No power. Plug in power cord.
Cycle Motor Power off ,
then on to reset breaker.
Motor does not operate. Power turned on with function knob
set to a run position. Set function knob to Stop/Park
, then select desired function.
Loose connection on control board. Check connection at J11 (120V
models) or J4 (240V models). See
page 37.
Worn brushes. Check both sides. Replace brushes
worn to less than 1/2 in. (13 mm),
see page 44.
Broken or misaligned brush springs. Realign or replace, page 44.
Brushes or springs binding in brush
holder. Clean brush holder and align brush
leads for free movement.
Shorted armature. Replace motor, page 43.
Check motor commutator for burn
spots, black pitting, or other dam-
age. Remove motor. Have motor shop
resurface commutator, or replace
motor, page 43.
Failed control board. Replace board. See page 37.
Fan not working. Loose fan cable. Check that cable is connected at fan
and at J9 on control board. See
pages 44 and 37.
Defective fan. Test and replace if necessary,
page 44.
Pump output low. Plugged fluid inlet strainer. Clear, see page 24.
Plugged disposable mixer. Clean or replace.
Leaking or plugged piston valve or
intake valve in displacement pump. Check valves. See pump manual.
One side doesn’t come up to pres-
sure in spray mode. Dirty or damaged Recirc/Spray
valve. Clean or repair, page 33.
Plugged fluid inlet strainer. Clear, see page 24.
Pump intake valve plugged or stuck
open. Clean pump intake valve. See
page 34.
Material is too viscous to siphon
feed. Warm the material feed pails with
flexible band heaters. See
Acces-
sories
on page 55.
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