Troubleshooting - Graco XM PFP Instructions - Parts Manual

Troubleshooting

Troubleshooting
1. Relieve the pressure before you check or service
any system equipment.
Problem
Little or no resin output.
Little or no hardener output.
Mixed fluid will not flush out.
Hardener pressure higher than normal.
Hardener pressure lower than normal.
Spray pattern developing tails.
Resin or hardener does not shut off.
Off ratio condition after increasing spray
pressure in spray mode with a remote mix
manifold.
16
2. Check all possible causes and solutions in the trou-
Cause
Fluid inlet is plugged.
Fluid container is empty.
Fluid inlet is plugged.
Fluid container is empty.
Fluid is hardened in static mixers or whip
hose.
Solvent supply container is empty.
Solvent is not compatible with fluid.
Hardener is cold.
Resin is cold. Flow rate is low.
Static mixer and/or whip hose plugging
up.
Low pressure from sprayer.
Cold material.
Too much pressure drop.
Damaged ball or seat or seal in
valve (52).
Hoses not volume balanced.
bleshooting chart before disassembling the mani-
fold.
Clean inlet; remove obstruction. See
Clean Mix Manifold Outlet, page 15.
Refill.
Clean inlet; remove obstruction. See
Clean Mix Manifold Outlet, page 15.
Refill.
Clean with compatible solvent. See Main-
tenance, page 15. Replace as neces-
sary.
Refill.
Change to compatible solvent.
Correct heat problem. See fluid heater
section of XM PFP Plural-Component
Sprayer Repair manual 3A2989.
Correct heat problem. See fluid heater
section of XM PFP Plural-Component
Sprayer Repair manual 3A2989.
Replace restrictor.
Clean Static Mixers, page 15.
Clean spray gun and tip. See gun man-
ual.
Check air supply pressure. Check inlet air
gauges while spraying.
Increase heat. See XM PFP Plural-Com-
ponent Sprayer Operation manual
3A2776.
Use larger hoses or more heat.
Replace or rebuild valve.
Volume balance A and B closer to volume
mix ratio. See Volume Balancing the
Mix Manifold, page 13.
Solution
3A2988C