High vacuum pumps, exhausters and blowers operating manual
23
WARNINGE
Use exclusively the following oils to lubricate the pump bearings:
• MOBIL SHC 624.
• TEXACO CETUS PAO 46
Change the gear and bearing oil as follows:
Disconnect the pump from the mains and bring the work chamber to the atmospheric pressure
Undo the oil filler plug
Get a container large enough to hold all oil and open the oil drain plug
Drain out all oil
Close drain plug and fill in fresh oil through the filler plug up to mid-range on the oil sight glass.
Close the oil filler plug and remove any oil spillage from the pump and/or floor
Connect to mains again and verify correct rotation direction of the pump (see 4.9)
WARNING
Regarding HV/FP pumps series, the oil filler plugs should be leak-tight. During vacuum running the
introduction of outside air through plug leakages could cause air containing oil to enter into the pump work
chamber through the rotor seals increasing the consumption of oil in the pump.
WARNING
A too low oil level jeopardizes the lubrication of gears and bearings, while a too high level might
contaminate the oil free work chamber of lobe rotors.
DANGER
Wear appropriate personal protection equipment to perform said operations.
DANGER
Comply with local regulations regarding the collection and disposal of used or polluted oil.
7.2.3 - REPLACEMENT OF THE 1ST SUPPLY SHAFT SEAL OIL
The pump is supplied complete with oil of first topping up.
Bearing’s life is also depending on the degree of contamination
of the lubricant. It is vital that the oil does not get contaminated and it must be changed after the first 500 hours, and then
periodically every 5000 hours of usage or at least every 18 month.
Change the gear and bearing oil as follows (
repetition of the previous chapter)
:
Disconnect the pump from the mains and bring the work chamber to the atmospheric pressure
Undo the oil filler plug
Get a container large enough to hold all oil and open the oil drain plug
Drain out all oil
Close drain plug and fill in fresh oil through the filler plug up to mid-range on the oil sight glass.
Close the oil filler plug and remove any oil spillage from the pump and/or floor
Connect to mains again and verify correct rotation direction of the pump (see 4.9)
WARNING
Use exclusively the following oils to lubricate the pump bearings:
• MOBIL SHC 624.
• TEXACO CETUS PAO 46
Check frequently the oil level trough the transparent plug. If adding is needed use upper vent plug; lower plug to drain.
The position of the plugs is shown in the dimensional drawings later in this manual.
The pump is supplied complete with oil of first topping up also in the cavity of the pump/motor connection where
the
motion transmission shaft seal is housed.
WARNING
To lubricate the motion transmission shaft seal of the pump use the same type of oil used for the gears
and bearings, such as:
• MOBIL SHC 624.
• TEXACO CETUS PAO 46