Graco 24M178 Maintenance and Repair, Pressure Relief Procedure, Air Filter 234402, Series B

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Maintenance and Repair

Pressure Relief Procedure

WARNING

To avoid injury, relieve air and fluid pressure before checking, cleaning, or repairing the equipment.

The following is a basic pressure relief procedure. Be sure to follow the specific pressure relief procedure in your spray gun and/or fluid supply equipment manuals.

1.Close the main air shut-off valve.

2.Trigger the gun or dispense valve and open any drain valves to relieve pressure.

Maintenance and Repair

• Relieve the pressure before cleaning, checking or repairing. Follow Pressure Relief Proce- dure, above.

Check system at least once per shift to ensure proper drainage.

A supply of low flow/low humidity air will pro- vide longer desiccant life.

Air Filter 234402, Series B

To maintain maximum filtering efficiency and avoid excessive pressure drop, the filter must be kept clean. See Manual 309919 for cleaning and parts information.

Coalescer 234397, Series B

NOTE: It is recommended that Air Filter 234402 be installed upstream of the coalescing filter to remove 3 micron and larger size particles and sep- arate large droplets of moisture from the air line.

CAUTION

Never let the liquid level in the bowl reach the base of the coalescing element.

See Manual 309919 for operation, cleaning, and parts information.

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309921N

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Contents Important Safety Instructions IncludesHow Desiccant Air Drying System Works Installation Shop Air Piping LayoutMinimum Pipe Size Recommendations Capacity LengthAir Hose Inside 10 ft 15 ft 20 ft 25 ft 50 ft 22 m 05 m 62 m 15.24 m .4 mm 309921N Coalescer Pressure Drop Indicator OperationModel 234401, Series D Model 24M178, Series BPart No. Description DescriptionMaintenance and Repair Pressure Relief ProcedureAir Filter 234402, Series B Coalescer 234397, Series BDesiccant Housing 234404, Series B Desiccant Housing DisassemblyFollow the Pressure Relief Procedure, Desiccant ChangeoutSelf-Relieving Air Regulator CleaningAir Regulator Assembly For Desiccant Air Drying System 309921N Graco Standard Warranty Graco Phone Numbers