9
MAINTENANCE
General
Scheduled maintenance consists of changing lubricating oil every
250 to 1500 hours of operation. Change the oil more frequently if
pumping corrosive vapors or where excessive operating
temperatures are encountered. Boosters with mechanical seals on
the rotors can generally run the full 1500 hours before an oil
change is required.
Proper oil drain schedules require oil to be changed before the
contaminant load becomes so great that the oil’s lubricating
function is impaired or heavy disposition of suspended
contaminants occur. To check the condition of the oil, drain a
sample into a clean container and check for the presence of water
or solids. Slight discoloration of the oil should not necessitate an
oil change.
NOTE:
When changing oil be sure to reseal the drain and fill
plugs. This is especially important on slinger seal series which
have no mechanical seals on the rotors. Air leaks past these plugs
can cause rapid loss of oil from end covers resulting in booster
failure. Oil levels should be checked every 24 hours of operation.
Spare Parts
Refer to the parts list and assembly drawing for your particular
model. Repair kits are available for all models. These kits contain
all the seals, bearings, o-rings, locks and special retaining screws
necessary for an overhaul. Always have complete booster model
number and serial number when ordering.
In developing a stock of spare parts, consider the following:
1) The degree of importance in maintaining the booster in a “ready”
condition.
2) The tie lag in parts procurement.
3) Cost.
4) Shelf life (seals and o-rings).
Contact Tuthill Vacuum Systems Sales Department for any
assistance in selecting spare parts.
