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Troubleshooting, Checklist, And Solution Of Positive Displacement Pump.

Troubleshooting, Checklist, And Solution Of Positive Displacement Pump.


 



Like other Positive Displacement Pumps or reciprocating machines, a reciprocating pump requires proper attention to the inspection checklist, monitoring, troubleshooting, solution, and maintenance for smooth operation. Troubleshooters should have to inspect as well as monitor the whole pumps sincerely. Periodical inspection Troubleshooting, Checklist, And Solution Of Reciprocating Pump may increase the lifetime. Periodical Troubleshooting, Checklist, And Solution Of Reciprocating Pump may decrease intercepted production and also increase productivity.

Many problems may crop up during startup, and running times, so one needs to know about a reciprocating pump & Troubleshooting. Possible reciprocating pump and troubleshooting and their probable remedies are disguised below:

 

01. Low Capacity:

Possible Causes:

  • The speed is too low.

  • Liquid end valves leaking.

  • The piston ring or liner is worn.

  • Undersized Plungers.

Remedy Or Action:

  • Increase speed.

  • Re-lap or replace the valve.

  • Replace worn parts.

  • Install the correct size.

 

02. Excessive Wear:

Possible Causes:

  • Misalignment.

  • Bent position/ rod/ plunger.

  • Worn bore.

Remedy Or Action:

  • Check alignment.

  • Check for straightness.

  • Replace the liner or Rebore.

 

03. Overheating:

Possible Causes:

  • Stuffing box overheating.

  • Bearing overheating.

  • Fluid is too viscous.

Remedy Or Action:

  • Check that packing is not too tightened or badly fitted.

  • Check packing lubricant.

  • Review the specification of the Pump.

  • Check oil level or lubricant condition.

  • Correct the bearing for misalignment or excessive tightness.

  • Check the fitting and condition of the oil seals.

  • Reduce fluid viscosity.

 

04. Pumps Requires Excessive Power:

Possible Causes:

  • Pumps speed or RPM too high.

  • Misalignment of pumps.

  • Internal friction.

  • Tight bearings.

  • Lack of lubrication.

Remedy Or Action:

  • Correct against the recommendation speed.

  • Check the alignment of the pump and Driver, also Foundations.

  • Repair the rubbing contact, clogging, etc.

  • Check bearing and packings.

  • Check the quantity and quality of lubricant.

 

05. Vibration And Noise.

Possible Causes:

  • Cavitation.

  • Misalignment.

  • Bent shaft,

  • Faulty Bearings.

  • Excessive fluid viscosity.

  • Improper pump assembly.

Remedy Or Action:

  • Check pump operating conditions.

  • Correct alignment with the driver.

  • Check and replace if necessary.

  • Correct or review product suitability.

  • Check and rectify.

 

06. Short Packing Life:

Possible Causes:

  • Incorrect packing

  • Misalignment of a plunger or piston rod with a stuffing box.

  • Worn plunger or piston rod.

  • Worn stuffing box bore.

  • The packing gland is too tight.

  • Too much packing in the box.

  • Abrasive in pumpage.

  • Inadequate packing lubricant.

Remedy Or Action:

  • Install correct packing.

  • Improve alignment.

  • Replace worn parts.

  • Repair or replace the stuffing box.

  • Lossen gland packing.

  • Reduce the number of rings.

  • Strains or filters in late.

  • Improve lubrication.

 

07. No Discharge:

Possible Causes:

  • Cavitation.

  • The speed is too low.

  • Not Primed.

  • Excessive suction lift.

  • Air Leaks.

Remedy Or Action:

  • Check Priming.

  • Increase speed.

  • Reduce suction lift.

  • Check the system and eliminate air leaks by sealing etc.

 

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