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Dry Screw Vacuum Pump Problems And Solutions

Dry Screw Vacuum Pump Problems And Solutions

Sunren   |   Updated : 23 Dec, 2022, 12:33 am

if you are looking for Dry Screw Vacuum Pump Problems And Solutions. this article will help you a lot.

Dry vacuum pump technology is evident and tangible in a number of essential applications, especially hybrid variable pitch screw pumps. There is no oil in these vacuum pumps. There is no need to lubricate vacuum stages or seals with these pumps. In this way, dry vacuum systems are pollution-free and emit no effluent.

Dry Screw Vacuum Pump Problems

there are many types of problems that your dry screw vacuum pump can face. let’s discuss it.

Insufficient Pumping Capacity

This could be due to:

  • There is a clog in the suction filter or strainer – clean or replace it.
  • Too much clearance – Check clearance.

Overload on Electric Motor

This could be due to:

  • The screw and casing of the pump could be clogged with foreign matter – adjust or replace them
  • There is an increase in pressure loss in the piping – check the pressure differential between the inlet and outlet.
  • Screw interference – Make the clearance between the casing and the screw larger and adjust the side clearance
  • Discharge or line is clogged & back pressure is increased – Drain and clean the discharge port and line


Dry Screw Vacuum Pump Problems

The pump may overheat for the following reasons:

  • Check the level of oil in the front end cover if there is an excessive lubricant
  • The high temperature at the vacuum pump inlet – Reduce inlet temperature
  • Check suction and discharge pressures with a high compression ratio
  • The screw and casing are interfering with each other – the cause of the interference must be found
  • Cleaning the cooling water line is a solution to the problem with cooling water flow
  • If back pressure is increasing due to clogged discharge ports and lines, drain and clean the ports and lines


This could be due to:

  • The system must be repositioned if the timing gear and screw are not positioned correctly.
  • Impropersembly – Reassemble
  • Overloading or improper lubrication damages the timing gear – replace the gear if necessary.

Damaged Bearing or Gear

This could be due to:

  • Improper Lubricant – Change Lubricant
  • Lubricant low – Refill lubricant
Posted By: Kalbro Pumps on 23 Dec, 2022

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