Graco Reactor H-VR Repair And Parts Manual page 26

Troubleshooting
Ratio Lock Handle
B Pump Arm
B (Resin)
Proportioning
Pump
Change Over Box
Hydraulic Cylinder
F . 1. Pump Line when viewed from rear of machine
IG
Table 2. Directional Valve Indicator Status
Left Pump Directional
Indicator Lighted
B-side pump piston valve
dirty or damaged
A-side pump inlet valve
dirty or damaged
26
1
3
2
Right Pump Directional
Indicator Lighted
B-side pump inlet valve
dirty or damaged
A-side pump piston valve
dirty or damaged
1 2 3
Pressure/Material Imbalance
To determine which component is out of balance, check
the color of some sprayed material. Two-component
materials are usually a mix of light and dark fluids, so
the under-proportioned component can often be readily
determined.
When you have determined which component is
under-proportioned, spray off-target, focusing on the
pressure gauge for that component.
For example: if component B is under-proportioned,
focus on the B-side pressure gauge. If the B gauge
reads considerably higher than the A gauge, the prob-
lem is at the gun. If the B gauge reads considerably
lower than the A gauge, the problem is at the pump.
A Pump Arm
Ratio Adjustment
Wheel
A (ISO)
Proportioning
Pump
Reversing
Switches
Switch Disk
r_256886_313540_4
313540L