Maintenance Tips

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General

  • Even smooth running of the pump rotor is essential
  • When delivering from a tank the liquid level must always be well above inlet opening
  • The performance as indicated on the driver nameplate must not be exceeded
  • The stuffing box must always drip slightly to remove friction heat from the sealing faces. If the leakage intensifies and does not decrease when the gland is tightened evenly, the packing must be renewed. Also take care that the surface of the shaft sleeve is still perfectly smooth. Otherwise change shaft sleeve.
  • If a pump shaft is equipped with a mechanical seal, practically no attention is required. During the running in period occasional slight leakage may occur..
  • When handling hot liquids (pump design “with stuffing box cooling”), pay attention to the flow of the cooling water for the shaft seal and the oil bath cooling, if any.
  • The cooling water flow should be adjusted so that the heating of the cooling water does not exceed 15degree Celsius. Sudden changes in temperature of the liquid handled from cold to hot or vice versa should be avoided.
  • On the standard pump design the oil level can be checked through the oil level sight glass when the pump is at rest. The oil level must not exceed the mark in the middle of the sight glass.
  • If the pump is equipped with a constant level oiler (see-sub section), merely check that there is oil in it is container.
  • The bearing temperature must not exceed 80 degree Celsius

Oil Specification

NAME OF THE FIRM LUBRICATING OIL FOR TEMPERATURE UPTO 80°C
SPEED UPTO 1500 RPM SPEED OVER 1500 RPM
INDIAN OIL SERVO SYSTEM 150 SERVO SYSTEM 68
HINDUSTAN PETROLEUM ESSTIC 55
TERRESSCO 56
ESSTIC 50
TERRESSCO 52
MOBIL MOBIL VACTRA-Heavy Duty
MOBIL D.T.E- Heavy Duty
Vac HLP 49
MOBIL VACTRA-Heavy Duty
MOBIL D.T.E- Heavy Duty
Vac HLP 36
SHELL SHELL VITREA 33
SHELL OIL 33
SHELL VITREA 31
SHELL OIL 29

Grace Specification

NAME OF THE FIRM SPEED UPTO 1500 RPM SPEED OVER 1500 RPM
INDIAN OIL SERVOGEM 3 SERVOGEM 2
CALTEX STARFAK 3 STARFAK 2
HIDUSTAN PEROLEUM NATRA 3 or LITHON 3 NATRA 2 or LITHON 2

For quantity of lubricant refer operation and instruction manual.