Graco Reactor E-XP1 Troubleshooting Manual page 33

Reactor Error Code Trouble Shooting Guide
2c) If "B" (RESIN) side is lacking at the gun, and "B" side fluid gauge reading is higher
than the "A" side, this is an indication of restriction on the "B" side, anywhere from the
gun mix chamber back to the fluid outlet manifold.
Causes:
o Restrictions that can include,
 blockage in the, mix chamber,
 gun screen,
 whip hose,
 hose temperature sensor,
 main fluid line,
 Manifold outlet
o "B" side chemical is thicker than the "A" due to cold material or primary heater problem.
o "A" side port has been increased by wear, reducing the "A" side back pressure causing an
ISO rich, or too much "A" condition.
2d) If "B" (RESIN) side is lacking at the gun, and "B" side fluid gauge reading is lower
than the "A" side, this is an indication of a problem from the fluid outlet gauge back to the
"B" drum feed supply.
Causes:
o Starving the supply with one of the following.
 Supply feed pump malfunction,
 Restriction of the feed hose or filter strainer,
 Drum is not properly vented due to bung cap in place or desiccant breather
clogged.
 Debris in the bottom of the drum container,
 Dented drum bottom restricting the feed pump inlet,
 "B" side proportioner pump has debris or a stuck ball in the inlet or discharge ball
check seat area.
 If circulating material back to the drum, the pressure relief/spray valve could be
leaking, or diverting pressure and material back to the drum.
Rev 2.6 (02/2014) Page 33