Troubleshooting - Graco Reactor A-20 Repair Parts

Troubleshooting

Troubleshooting
Power
PROBLEM
Reactor does not operate
No power when disconnect switch is
turned on; using 230V, 1 phase or
230V, 3 phase power
External main supply power circuit
breaker trips and Reactor disconnect
switch fails when switch is turned on.
No temperature display lights at star-
tup
Reactor stops working; all lights are
off except temperature displays
Pumps and Pressures
PROBLEM
Pump does not run up and down but
green switch light is on
Pump runs but no fluid pressure
Fluid pressure low or dropping
Pump output low
One pressure gauge drops when
pumps are stalled on both the
upstroke and the downstroke
One pressure gauge drops when
pumps are stalled on the downstroke,
but not the upstroke
8
CAUSE
No power
Power cord not connected properly
Power terminal jumper still at 380V, 3
phase position, as shipped from fac-
tory
Power terminal jumper was left in
230V, 1 phase position. When using
230V, 3 phase or 380V, 3 phase
power
No power
Control power fuses blown
Red stop switch was pushed
CAUSE
PARK/RUN switch in PARK position
No air supply
Air pressure regulators set at 0 psi
Fluid inlet ball valves closed
Air supply pressure low when spray-
ing
Icing in air motor quick exhausts or
mufflers
Obstructed gun impingement ports or
filters
Leaking pump throat
Leak between pump and gun
Spray gun is leaking on one side
Inlet ball check not sealing
Inlet check seat o-ring not sealing
SOLUTION
Plug in power cord
Turn Main Disconnect Switch ON
Check connections
Place jumpers in correct position; see
operation manual 311511 and label
inside front lower cabinet.
Place jumpers in correct position; see
manual 311511. Replace main power
disconnect switch; see page 26.
Plug in power cord
Turn Main Disconnect Switch ON
Check and replace fuses on long ter-
minal strip
Reset all control switches to START
SOLUTION
Turn PARK/RUN switch to RUN
Air supply line not connected
Open inlet air ball valve
Turn up air pressure regulators
Open fluid ball valves
Increase inlet air pressure
Increase air compressor size to meet
flow requirements
Remove airline quick disconnects
Use 3/8 in. (0.95 cm) ID or larger air
supply hose
Check and repair fan
Check inlet filter water separator; see
page ##. Stop spraying for 5 minutes
while fan melts ice.
Flush and clean gun; see gun manual
Repair pump; see 309577
Check fluid tubes, heater, and hoses
Clean and repair spray gun
Clean or replace; see 309577
Repair pump; see 309577
311512A