ClimaCool IOM FLEX SERIES - Manual (Page 35)

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COMPRESSOR INFORMATION
The compressors used on the ClimaCool chiller are scroll
compressors. They are highly efficient and extremely reliable.
However, the information contained in this document will be
useful for their care.
Compressor Rotation
All scroll-type machines are unidirectional and will only
compress in one direction. Operating in the reverse rotation
can be destructive and will be indicated by a load operating
noise together with a lack of compression.
Compressor Lubrication
The compressor operates on a sealed system and oil can only
be lost if leak occurs. There are few cases when oil will need
to be added to a machine in normal operation.
Oil Type
The oil in ALL scroll compressors used in ClimaCool
chillers is polyester type oil, (POE), and is intended for the
dual usage of either refrigerant R22 or R407C selected for
use. All (POE) refrigerant oils require special handling and
should be protected from contamination. They are extremely
hygroscopic and will absorb moisture rapidly from the air. It
is strongly recommended to store and dispense POE oils from
sealed metal cans. Suitable POE oils are:
* Copeland Ultra 22 CC
* Mobil EAL Arctic 22 CC
* ICI Emkarate RL 32 CF
Oil Levels
The oil level in the compressor should be checked with the
compressor running. The compressor oil level may vary
during operation and particularly on start-up. The normal
operating compressor oil level should be between 1/3 and 1/2
of the sight glass. During operation, a certain amount of oil
is carried out into the refrigeration system. The system has
been designed to bring the oil back to the compressor. If the
level in the sight glass falls, it may be due to the operating
conditions and enough time should be given to allow the oil to
return before more oil is added. This could take up to 6 hours
of operation. The compressor should not be allowed to operate
with less than 1/8" oil sight glass for an extended period of
time (longer than 4-6 hours).
Adding Oil
The compressor must never be run in a vacuum. A suitable
hydraulic pump should be used to add oil and reserved for
this process. Oil should only be added to a compressor while
it is operating to observe valid oil sight glass levels. Oil is
pressure-injected either into a gauge connection on the suction
line or injected into the oil process port at the bottom of the
compressor housing. Only enough oil should be added to raise
the level above the 1/3 sight glass point.
Compressor Information
! ATTENTION INSTALLER
3 Phase Scroll Compressor Units
• If this unit uses a 3 Phase Scroll Compressor, the following
instructions MUST BE followed:
- Unit power supply MUST BE wired in the proper sequence to avoid
damage to the 3 Phase Scroll Compressor;
- Scroll Compressors with INCORRECT rotation show the following
characteristics:
1.) High sound level;
2.) High suction pressure and low dischage pressure;
3.) Low current draw.
- If any of the three above characteristics exist, swap two of the
three supply wires at the disconnect and recheck compressor for
incorrect rotation.