Ram Troubleshooting. Graco 3A5379B, Electric Supply System for Sealants and Adhesives

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Ram Troubleshooting. Graco 3A5379B, Electric Supply System for Sealants and Adhesives | Manualzz

Ram Troubleshooting

Ram Troubleshooting

Check all possible problems before disassembling the ram, pump, or platen. Refer to the appropriate pump manual for pump troubleshooting.

Problem Cause Solution

Ram will not raise or lower.

Ram raises and low ers too fast.

Air leaks around cyl inder rod.

Fluid squeezes past ram plate wipers.

Closed air valve or clogged air line.

Not enough air pres sure.

Worn or damaged piston.

Hand valve closed or clogged.

Air pressure is too high.

Worn rod seal.

Open, clear.

Increase.

Replace. See Supply Unit Repair on page 36.

Open, clear.

Decrease.

Replace. See Supply Unit Repair on page 36.

Decrease.

Pump will not prime properly or pumps air.

Air assist valve will not hold drum down or push plate up.

Air pressure too high.

Worn or damaged wipers.

Closed air valve or clogged air line.

Not enough air pres sure.

Worn or damaged piston.

Hand valve closed or clogged.

Hand valve is dirty, worn, or damaged.

Closed air valve or clogged air line.

Not enough air pres sure.

Valve passage clogged.

Replace. See

Open, clear.

Increase.

Remove and Reinstall Wipers

Replace. See pump manual.

Open, clear. See

Clean, service.

Open, clear. See

Increase.

Clean. See

Platen Maintenance

Platen Maintenance

Platen Maintenance on page 17.

on page 18.

on page 17.

on page 17.

3A5379B 23

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