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3- Handling instructions
Oil level at inclination
conditions
Compressor lateral inclination and front lifting at
the same time are allowed so consider this factor
during sight glass inspection (distorted indication).
Oil level inspection should be conducted at low
compressor speed or compressor stopped. Sight
glass cannot be used at high compressor speed
because oil surface is not visible and a mixture of
refrigerant and oil is formed.
A flashlight can be helpful to expose oil surface:
light up one of the sight glasses to read oil level at
the opposite one.
Front Lifting
In most of bus rear application, the front end of
the compressor is lifted to fit the inclination of the
engine.
1. Oil level at sight glass: oil level is distorted.
2. Oil amount: quantity appears lower than
recommended but the level is actually correct,
you do not need to add more oil.
Lateral Inclination
1. Oil level at sight glass: one sight glass will look
completely covered with oil while the other
will look inferior to recommendation or even
empty.
2. Oil amount: in this case, some of the oil is
below oil passage level, therefore you should
consider adding some oil to fill in the dead
volume that appears in the illustration on the
left.
CAUTION!
Be careful of rotating parts and high
temperature parts.
15˚ 15˚
5˚
5˚
15˚
Oil passage
Oil amount below oil
passage level
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