Troubleshooting
42
3A4381M
Troubleshooting
Always follow the
on page
26 before servicing the system.
Fluid ratio will be wrong.
Purge all air from system before proportioning fluids.
Problem
Cause
Solution
System stops or will not start.
Air pressure or volume too low.
Increase air pressure; check air
compressor.
Closed or restricted air line or air valve. Open or clean the air line and air
valve.
Fluid valves closed.
Open the fluid valves.
Clogged fluid hose.
Replace the fluid hose.
Air motor worn or damaged.
Repair air motor; see your air motor
manual.
Displacement pump stuck.
Repair pump; see your lower pump
manual.
System speeds up or runs
erratically.
Fluid containers are empty.
Check fluid containers often; keep
filled.
Air in fluid lines.
Purge; check connections.
Displacement pump parts worn or
damaged.
Repair pump; see your lower pump
manual.
Pump operates, but resin output
pressure drops on upstroke.
Dirty, worn, or damaged resin pump
piston valve or piston packings.
Clean, repair pump; see your lower
pump manual.
Pump operates, but resin output
pressure drops on downstroke.
Dirty, worn, or damaged resin pump
intake valve.
Clean, repair pump; see your lower
pump manual.
Pump operates, but resin output
pressure drops on both strokes.
Hardener output restriction.
Clean, unplug hardener side. Open
manifold restrictor.
Fluid supply low.
Refill or change container.
Pump operates, but hardener
output pressure drops on
upstroke.
Dirty, worn, or damaged hardener pump
piston valve or piston packings.
Clean, repair pump; see your lower
pump manual.
Pump operates, but hardener
output pressure drops on
downstroke.
Dirty, worn, or damaged hardener pump
intake valve.
Clean, repair pump; see your lower
pump manual.
Pump operates, but hardener
output pressure drops on both
strokes.
Resin output restriction.
Clean, unplug resin side.
Fluid supply low.
Refill or change container.
Fluid leak in packing nut.
Loose packing nut or worn throat
packings.
Tighten; replace; see your lower
pump manual.
Fluid leak under packing nut
Packing cartridge o-ring.
Replace o-ring; see your lower pump
manual.