Troubleshooting
10
310796F
Troubleshooting
Problem
Cause
Solution
System stops or will not start.
Air pressure or volume too low.
Increase; check air compressor.
Closed or restricted air line or air
valve.
Open or clean.
Fluid valves closed.
Open.
Clogged fluid hose.
Replace.
Air motor worn or damaged.
Repair air motor; see 309347.
Displacement pump stuck.
Repair pump; see 307944.
System speeds up or runs erratically. Fluid containers are empty.**
Check often; keep filled.
Air in fluid lines.**
Purge; check connections.
Displacement pump parts worn or
damaged.
Repair pump; see 307944.
Pump operates, but resin output
pressure drops on upstroke.*
Dirty, worn, or damaged resin pump
piston valve or piston packings.
Clean, repair pump; see 307944.
Pump operates, but resin output
pressure drops on downstroke.
Dirty, worn, or damaged resin pump
intake valve.
Clean, repair pump; see 307944.
Pump operates, but resin output
pressure drops on both strokes.*
Hardener output restriction.
Clean, unplug hardener side.
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 307944.
Pump operates, but hardener output
pressure drops on downstroke.*
Dirty, worn, or damaged hardener
pump intake valve.
Clean, repair pump; see 307944.
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 around packing nut.
Loose packing nut or worn throat
packings.
Tighten; replace; see 307944.
Relief valve opens too soon or will
not close.
Relief valve is dirty or damaged.
Replace valve cartridge (209) with kit
246842.
No pressure on one side; fluid leak-
ing from fluid manifold.
Overpressure rupture disk blown.
Determine cause of overpressuriza-
tion and correct. Replace rupture disk
assembly (202).
Pressure and flow surges on
upstroke.
Feed pressure too high. Every pound
of feed pressure adds 2 psi boost
during upstroke.
Reduce feed pressure. See Techni-
cal Data, page 27.
Fluid outlet pressure gauges split at
top changeover (if one gauge drops,
the others will rise).
Not fully loading one side on
upstroke.
Increase pressure on side that
dropped.
Increase feed hose size.
Clean inlet strainer (12a).
* Fluid ratio will be wrong.
** Purge all air from system before proportioning fluids.
Troubleshooting continued on page 11.
Содержание Hydra-Cat TI5556b
Страница 12: ...Troubleshooting 12 310796F...
