Troubleshooting
Troubleshooting
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| ✖ Fluid ratio will be wrong. | ||
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| ◆ Purge all air from system before proportioning | ||
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| fluids. |
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| Problem |
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| Cause | Solution | |||||||
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System stops or will not start. | Air pressure or volume too low. | Increase; check air compressor. | ||||||||||
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| Closed or restricted air line or air | Open or clean. | ||||
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| valve. |
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| Fluid valves closed. | Open. | ||||
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| Clogged fluid hose. | Replace. | ||||
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| Air motor worn or damaged. | Repair air motor; see 311238. | ||||
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| Displacement pump stuck. | Repair pump; see 311762. | ||||
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System speeds up or runs erratically. | Fluid containers are empty.◆ | Check often; keep filled. | ||||||||||
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| Air in fluid lines.◆ | Purge; check connections. | ||||
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| Displacement pump parts worn or | Repair pump; see 311762. | ||||
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| damaged. |
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Pump operates, but resin output | Dirty, worn, or damaged resin pump | Clean, repair pump; see 311762. | ||||||||||
pressure drops on upstroke.✖ | piston valve or piston packings. |
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Pump operates, but resin output | Dirty, worn, or damaged resin pump | Clean, repair pump; see 311762. | ||||||||||
pressure drops on downstroke. | intake valve. |
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Pump operates, but resin output | Hardener output restriction. | Clean, unplug hardener side. Open | ||||||||||
pressure drops on both strokes.✖ |
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| manifold restrictor. | |||||||
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| Fluid supply low.◆ | Refill or change container. | ||||
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Pump operates, but hardener output | Dirty, worn, or damaged hardener | Clean, repair pump; see 311762. | ||||||||||
pressure drops on upstroke.✖ | pump piston valve or piston packings. |
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Pump operates, but hardener output | Dirty, worn, or damaged hardener | Clean, repair pump; see 311762. | ||||||||||
pressure drops on downstroke.✖ | pump intake valve. |
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Pump operates, but hardener output | Resin output restriction. | Clean, unplug resin side. | ||||||||||
pressure drops on both strokes. |
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Fluid supply low.◆ | Refill or change container. | |||||||||||
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Fluid leak in packing nut. | Loose packing nut or worn throat | Tighten; replace; see 311762. | ||||||||||
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| packings. |
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Fluid leak under packing nut | Packing cartridge | Replace | ||||||||||
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Relief valve (AM) leaks back to sup- | Relief valve is dirty or damaged. | Replace valve cartridge (302) with kit | ||||||||||
ply, opens too soon, or will not close. |
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| 262520. | |||||||
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No pressure on hardener side; fluid | Overpressure rupture disk blown. | Determine cause of overpressuriza- | ||||||||||
leaking from hardener pump outlet |
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| tion and correct. Replace rupture disk | |||||||
rupture disc fitting. |
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| assembly (140) and | |||||||
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| cartridge (302). | |
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Pressure and flow surges on | Feed pressure too high. Every pound | Reduce feed pressure. See Techni- | ||||||||||
upstroke. | of feed pressure adds 2 psi boost | cal Data, page 53. | ||||||||||
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| during upstroke. |
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3A0420H | 31 |