UPS 120, UPS 150, UPS 250 and UPS 300 Uninterruptible Power Supplies Caterpillar


Oil Level - Check

Usage:

UPS 250 APZ


Illustration 1g00666183
(1) Sight Glass

Observe the oil through the sight glass.

An oil change may not be required under the following conditions:

  • The oil is even with the level/fill line.

  • The oil does not show any signs of contamination.

An oil level that is higher than the level/fill line may indicate condensation of vapor. This situation requires the oil to be changed.

A dark-colored oil indicates that the oil has been contaminated. This situation requires the oil to be changed.

A low level indicates that oil should be added to the pump. 190-8487 Vacuum Pump Oil is available from your Caterpillar Dealer.

Caterpillar Information System:

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