SB-520-2
24
!
!
NOTICE
Do not mount the compressor solidly on the
heat exchanger!
Risk of damage to the heat exchanger (fatigue
fractures).
!
!
NOTICE
Potential chemical reactions due to air penetra-
tion!
Proceed swiftly and keep shut-off valves closed
until evacuation.
Provide sufficient free space under the suction gas filter
housing for dismounting and mounting the suction gas
filter (> 450 mm).
4.3
Direct drive via coupling
DANGER
Hair, hands or clothes may get caught in the
coupling!
Serious injuries are possible.
Secure the coupling zone with a separating
cover (protective grid)!
Information
Observe safety standards EN ISO 13857 / EN
294 / EN 349 and national regulations.
Use only couplings with elastic intermediate ele-
ments which can compensate for slight shifts in
axial direction, but do not exert their own axial
force.
!
!
NOTICE
Risk of damage to the compressor due to wrong
couplings!
Use only couplings approved by BITZER !
Approved coupling:
• KS900
The compressor is connected to the motor via the
coupling housing:
• Clean mating surfaces on the compressor, motor
and coupling housing.
• Install the motor on rails.
• Slide the coupling half for the compressor side (in-
cluding parallel key) on the compressor shaft, make
sure that it is flush and fasten it with screws, fasten
the compressor to the coupling housing.
• Slide the coupling half for the motor side (including
parallel key) loosely on the motor shaft, fasten the
coupling housing to the motor.
• Remove protective grid from the coupling housing,
move the coupling half on the motor side until the
clearance is 2 .. 5 mm, then fasten it with screws.
• Make sure to re-install the protective grid afterwards!
!
!
NOTICE
Poor coupling alignment may cause premature
coupling failure and damage to bearings and
shaft seal!
Carefully align the motor and compressor shaft!
!
!
NOTICE
Risk of damage to compressor and coupling!
Firmly tighten the fixing elements of both coup-
ling halves to prevent them from getting loose
during operation!
Tightening torque: 15 Nm.
Provide additional support for the compressor on the
base frame.
Direct drive without coupling housing is possible, but it
requires a very stable base frame and an exact align-
ment of the compressor shaft and motor shaft. The
shaft ends must not touch each other. For height ad-
justment, use stable supports (flat sheets).
Special drives (e.g. combustion engines) require indi-
vidual consultation with BITZER.
4.4
Connecting the pipelines
WARNING
The compressor is under pressure!
Serious injuries are possible.
Depressurize the compressor!
Wear safety goggles!
!
!
NOTICE
Potential chemical reactions due to air penetra-
tion!
Proceed swiftly and keep shut-off valves closed
until evacuation.
