Application Ranges; Oil Circulation; Mounting; Transporting The Compressor - Bitzer OSKA9553 Instructions De Service

NOTICE
!
!
Risk of compressor failure!
Operate the compressor only in the intended ro-
tation direction!

3 Application ranges

Compressor type
OS.A95
Risk of air penetration during operation in the
vacuum range
NOTICE
!
!
Potential chemical reactions as well as in-
creased condensing pressure and rise in dis-
charge gas temperature.
Avoid air penetration!
WARNING
A critical shift of the refrigerant ignition limit is
possible.
Avoid air penetration!

3.1 Oil circulation

For operation with 50 Hz resp. 2900 rpm the adjusted
oil injection into the profiles is sufficient. When operat-
ing at high condensing and simultaneously low evapor-
ation temperatures an additional oil injection into the
profiles must be opened above 50 Hz resp. 2900 rpm.
For this purpose
• depressurize the compressor,
• unscrew the plug (see figure 2, page 26, Pos. 24),
• remove the set screw mounted behind the plug,
• re-assemble the plug with new aluminum gasket
ring,
• check tightness.
SB-520-2
Permitted refrigerant
R717 (NH )
3
WARNING
The compressor is under pressure!
Serious injuries are possible.
Depressurize the compressor!
Wear safety goggles!
Oil types
Reniso KC68, Reflo 68A,
SHC226E

4 Mounting

4.1 Transporting the compressor

Either transport the compressor screwed onto the pallet
or lift it using the eyebolts, see figure 1, page 23.
DANGER
Suspended load!
Do not step under the machine!
Fig. 1: Lifting the compressor

4.2 Installing the compressor

Install/mount the compressor horizontally. Take suit-
able measures if the compressor is operated under ex-
treme conditions (e.g. aggressive atmosphere, low out-
door temperatures, etc.). Consultation with BITZER is
recommended.
Application limits
See brochure "SP-520"
and BITZER SOFTWARE
23