Graco Inc 2104E, 800-053 manual Problem, Causesolution, 801-392

PROBLEM

CAUSESOLUTION

-0w~pressure.

Worn nozzle.

Belt slippage.

Air leak in inlet plumbing.

Relief valve stuck, partially plugged or improperly adjusted, valve seat worn.

Inlet suctionstrainer clogged 01 improper size.

Replace with nozzle of proper Size.

Tighten or replace; usecorrect belts and replacl both at same time.

Disassemble, reseal, and reassemble

Clean, and adjust relief valve; check for worn and dirty valve seats. Kit available.

Clean. Use adequate size. Check more frequently.

. .

’ump runs extremely rough, Iressure low.

Worn packing. Abrasives in pumped fluid or severe cavita- tion. Inadequate water supply.

Fouled or dirty inlet or discharge valves.

Worn inlet or discharge valves. Leaky discharge hose.

Restricted inlet or air entering the inlet plumbing.

Inlet restrictions and/or air ‘eaks. Stuck inlet or discharge talve.

Install proper filter. Check flow available to pump.

Clean inlet anddischarge valve assemblies.

Replace worn valves, valve seats and/or discharge hose.

Proper size inlet plumbing; check for airtight seal.

Clean out foreign material, replace worn valves

.

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:” -...: .

Nater leakage from under :he manifold.

Nater in pump crankcase.

:requent or premature ailure of the packing.

;trow surging at the inlet lnd low pressure on the lischarge side.

-caking H.P. seals.

vVorn packing.

May be caused by humid air :ondensing into water inside the :rankcase.

Scored plungers.

3ver pressure to inlet manifold.

lamaged or worn plungers.

4brasive material in the fluid )eing pumped.

ixcessive pressure-and/or tem. )erature of fluid being pumped.

h e r pressure of pumps.

lunning pump dry.

:oreign particles in the inlet or lischarge valve, or worn inlet Ind/or discharge valves.

Replace seals.

Install new packing

Change oil at 3 month or 500hour intervals usins Graco Crankcase Oil (other approved oil evenl month or 200 hours) P.N. 801-144.

Replace plungers,

Reduce inlet pressure.

Replace plungers.

Install proper filtration on pump inlet plumbing,

Check pressures andfluid inlettemperature; be sure they are within specified range.

Reduce pressure.

Do not run DumD without water.

Check for smooth lap surfaces on inlet and. discharge valve seats. Discharge valve seats and inlet valve seats may be lapped on a very fine oil stone.

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