Giant LP301A-5100 installation instructions Pump System Malfunction

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PUMP SYSTEM MALFUNCTION

MALFUNCTION

CAUSE

REMEDY

The Pressure and/

Worn packing seals

Replace packing seals

or the Delivery

Broken valve spring

Replace spring

Drops

Belt slippage

Tighten or Replace belt

 

Worn or Damaged nozzle

Replace nozzle

 

Fouled discharge valve

Clean valve assembly

 

Fouled inlet strainer

Clean strainer

 

Worn or Damaged hose

Repair/Replace hose

 

Worn or Plugged relief valve on pump

Clean, Reset, and Replace worn parts

 

Cavitation

Check suction lines on inlet of

 

pump for restrictions

 

 

Unloader

Check for proper operation

Water in crankcase

High humidity

Reduce oil change interval

 

Worn seals

Replace seals

Noisy Operation

Worn bearings

Replace bearings, Refill crankcase

 

 

oil with recommended lubricant

 

Cavitation

Check inlet lines for restrictions

 

 

and/or proper sizing

Rough/Pulsating

Worn packing

Replace packing

Operation with

Inlet restriction

Check system for stoppage, air

Pressure Drop

 

leaks, correctly sized inlet

 

Accumulator pressure

plumbing to pump

 

Recharge/Replace accumulator

 

Unloader

Check for proper operation

 

Cavitation

Check inlet lines for restrictions

 

 

and/or proper size

Pump Pressure as

Restricted discharge plumbing

Re-size discharge plumbing to Drop at

gun

 

flow rate of pump

Rated, Pressure

 

 

Excessive

Worn plungers

Replace plungers

Leakage

Worn packing/seals

Adjust or Replace packing seals

 

Excessive vacuum

Reduce suction vacuum

 

Cracked plungers

Replace plungers

 

Inlet pressure too high

Reduce inlet pressure

High Crankcase

Wrong Grade of oil

Giant oil is recommended

Temperature

Improper amount of oil in crankcase

Adjust oil level to proper amount

Preventative Maintenance Check-List & Recommended Spare Parts List

Check

Daily

Weekly

50hrs

Every

Every

Every

 

 

 

 

500 hrs

1500 hrs

3000 hrs

Oil Level/Quality

X

 

 

 

 

 

Oil Leaks

X

 

 

 

 

 

Water Leaks

X

 

 

 

 

 

Belts, Pulley

 

X

 

 

 

 

Plumbing

 

X

 

 

 

 

 

 

Recommended Spare Parts

 

 

Oil Change (1 Gallon) p/n 1154

 

 

X

X

 

 

Seal Spare Parts (1 kit/pump)

 

 

 

 

X

 

Valve Spare Parts (1 kit/pump)

 

 

 

 

 

X

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Contents Model LP301A-5100 Installation Instructions Specifications Model LP301A-5100 Exploded View LP301A-5100 LP301A-5100 Parts List To Check Valves To Check Seals and Plunger Pipe Weep Hole To Dismantle Gear END To ReassemblePump System Malfunction LP301A-5100 Dimensions Inches mm Giant Industries Limited Warranty