PUMPSYSTEMMALFUNCTION
MALFUNCTION | CAUSE | REMEDY |
The Pressure and/or | Worn packing seals | Replace packing seals |
theDeliveryDrops | Brokenvalvespring | Replacespring |
| Beltslippage | Tighten or Replace belt |
| Worn or Damaged nozzle | Replacenozzle |
| Fouleddischargevalve | Cleanvalveassembly |
| Fouledinletstrainer | Cleanstrainer |
| Worn or Damaged hose | Repair/Replacehose |
| Worn or Plugged relief valve on pump | Clean,Reset,andReplacewornparts |
| Cavitation | Check suction lines on inlet of |
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| pumpforrestrictions |
| Unloader | Check for proper operation |
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Water in crankcase | Highhumidity | Reduceoilchangeinterval |
| Worn seals | Replaceseals |
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Noisy Operation | Wornbearings | Replacebearings,Refillcrankcase |
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| oilwithrecommendedlubricant |
| Cavitation | Checkinletlinesforrestrictions |
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| and/orproper sizing |
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Rough/Pulsating | Wornpacking | Replacepacking |
Operationwith | Inletrestriction | Check system for stoppage, air |
Pressure Drop |
| leaks,correctlysizedinletplumbing |
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| to pump |
| Accumulatorpressure | Recharge/Replaceaccumulator |
| Unloader | Check for proper operation |
| Cavitation | Checkinletlinesforrestrictions |
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| and/or proper size |
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Pressure Drop at | Restricteddischargeplumbing | |
Gun |
| flow rate of pump |
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ExcessiveLeakage | Wornplungers | Replaceplungers |
| Wornpacking/seals | Adjust or Replace packing seals |
| Excessivevacuum | Reducesuctionvacuum |
| Crackedplungers | Replaceplungers |
| Inlet pressure too high | Reduceinletpressure |
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HighCrankcase | Wrong Grade of oil | Giant oil is recommended |
Temperature | Improper amount of oil in crankcase | Adjust oil level to proper amount |
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