Graco Reactor H-40 Series Repair And Parts

Troubleshooting
312063Z 23
Pumps do not reverse direction or
pumps do not move.
Bent or loose activator plate, rocker
arm, or reversing switch.
See Pumps Do Not Reverse
Direction, page 25.
Loose piston packing bolt. See Pumps Do Not Reverse
Direction, page 25.
Faulty directional valve. See Pumps Do Not Reverse
Direction, page 25.
Erratic pump movement. Pump cavitation. Feed pump pressure is too low.
Adjust pressure to maintain 100 psi
(0.7 MPa, 7 bar) minimum.
Fluid is too thick. Consult your
material supplier for recommended
fluid temperature to maintain a
viscosity of 250 to 1500 centipoise.
Loose activator plate, rocker arm, or
reversing switch.
See Pumps Do Not Reverse
Direction, page 25.
Faulty directional valve. Replace directional valve.
Pump output low. Obstructed fluid hose or gun; fluid
hose ID too small.
Open, clear; use hose with larger ID.
Worn piston valve or intake valve in
displacement pump.
See your pump manual.
Inadequate feed pump pressure. Check feed pump pressure and
adjust to 100 psi (0.7 MPa, 7 bar)
minimum.
Fluid leak at pump rod seal. Worn throat seals. Replace. See your pump manual.
No pressure on one side. Fluid leaking from pump outlet
rupture disk (216).
Check if heater (2) and PRESSURE
RELIEF/SPRAY valve (SA or SB) are
plugged. Clear. Replace rupture disk
(216) with a new one; do not replace
with a pipe plug.
Inadequate feed pump pressure. Check feed pump pressure and
adjust to 100 psi (0.7 MPa, 7 bar)
minimum.
PROBLEM CAUSE SOLUTION

Graco Reactor H-40 Series Specifications

General

Brand	Graco
Model	Reactor H-40 Series
Category	Paint Sprayer
Language	English