Graco Reactor A-20 Repair Parts

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

Graco Reactor A-20 Specifications

General

Brand	Graco
Model	Reactor A-20
Category	Paint Sprayer
Language	English