Graco 308550ZAD important safety instructions Troubleshooting, Problem Cause Solution

Page 14

Troubleshooting

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 12.

1.Relieve the pressure before checking or servicing the equipment.

2.Check all possible problems and causes before disassembling the pump.

PROBLEM

CAUSE

SOLUTION

 

 

 

Pump cycles at stall or fails to hold

Worn check valve balls (301), seats

Replace. See page 18.

pressure at stall.

(201) or o-rings (202).

 

 

 

 

Pump will not cycle, or cycles once

Air valve is stuck or dirty.

Disassemble and clean air valve.

and stops.

 

See pages 16–17. Use filtered air.

 

 

 

 

Check valve ball (301) severely

Replace ball and seat. See page

 

worn and wedged in seat (201) or

18.

 

manifold (102 or 103).

 

 

 

 

 

Check valve ball (301) is wedged

Install Pressure Relief Valve

 

into seat (201), due to overpressur-

(see page 10).

 

ization.

 

 

 

 

 

Dispensing valve clogged.

Relieve pressure and clear valve.

 

 

 

Pump operates erratically.

Clogged suction line.

Inspect; clear.

 

 

 

 

Sticky or leaking balls (301).

Clean or replace. See page 18.

 

 

 

 

Diaphragm ruptured.

Replace. See pages 19–22.

 

 

 

 

Restricted exhaust.

Remove restriction.

 

 

 

Air bubbles in fluid.

Suction line is loose.

Tighten.

 

 

 

 

Diaphragm ruptured.

Replace. See pages 19–22.

 

 

 

 

Loose inlet manifold (102), dam-

Tighten manifold bolts (112) or re-

 

aged seal between manifold and

place seats (201) or o-rings (202).

 

seat (201), damaged o-rings (202).

See page 18.

 

 

 

 

Loose fluid side diaphragm plate

Tighten or replace. See pages

 

(105).

19–22.

 

 

 

14 308550

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Contents Instructions Parts List Important Safety InstructionsTable of Contents ModelsSymbols Equipment Misuse HazardToxic Fluid Hazard Tighten Screws Before First Use InstallationGeneral Information Toxic Fluid HazardGrounding Ground all of this equipmentTypical FLOOR-MOUNT Installation Air LineFluid Suction Line Installation of Remote Pilot Air LinesMountings Fluid Outlet LineFlange Connections Bolt Tightening SequenceChanging the Orientation of the Fluid Inlet and Outlet Ports Fluid Pressure Relief ValveVenting Exhaust AIR Air Exhaust VentilationFire and Explosion Hazard Operation Pressure Relief ProcedureStarting and Adjusting the Pump Flush the Pump Before First UseMaintenance Troubleshooting Problem Cause SolutionTroubleshooting Disassembly ServiceRepairing the Air Valve Tools RequiredReassembly Ball Check Valve Repair Relieve the pressure. Disconnect all hosesDiaphragm Repair Reassembly Standard Diaphragms Reassembly Overmolded Diaphragms 105 19 402 24 104 403 Bearing and Air Gasket Removal Detail of Air Valve Bearings Pump Matrix Husky 2150 Polypropylene and Pvdf Pumps, Series aRepair Kit Matrix For Husky 2150 Polypropylene and Pvdf Pumps, Series aAir Motor Parts List Matrix Column PartsFluid Section Parts List Matrix Column MufflerDiaphragm Parts List Matrix Column Seat Parts List Matrix ColumnBall Parts List Matrix Column 114 Torque Sequence Side View Pump Mounting Hole Pattern DimensionsFront View Dimension SST Center Aluminum Polypropylene Pvdf Cover Technical Data 14-0.8 MPa, 1.4-8 barPsi MPa, bar Performance ChartFeet meters Fluid Flow GPM lpmGraco Warranties Graco Information
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