Spi Sensor; Set Screws At Shaft Seals; Locking Screws Of Grooved Nuts On Shafts; Fixing Of Electrical Motor - Bitzer OSKA9553 Instructions De Service

10.8.4 SPI sensor

60 Nm, thread at sensor body. Mount with aluminium
gasket.
The SPI (slider position indicator) is mounted at com-
pressors starting at sizes HS.95, OS.95 and CS.105.

10.8.5 Set screws at shaft seals

Size
M5
M6
M8
M8
①: only for OS.95

10.8.6 Locking screws of grooved nuts on shafts

The locking screws are set screws or cheese-head
screws depending on compressor design.
Size
M4
M6
M8

10.8.7 Fixing of electrical motor

The rotor of the electrical motor is fixed to the male ro-
tor shaft.
Central screw at shaft end
Size
M10
M16
①: Use only screws with Loctite or Precote85 coating.
Grooved nuts at the shaft
Size
M40 x 1,5
M50 x 1,5
SB-520-2
3 .. 5 Nm
5 .. 9 Nm
10 Nm ①
12 .. 18 Nm
3.5 Nm
3 .. 5 Nm
5 .. 9 Nm
15 .. 20 Nm
15 .. 20 Nm ①
15 Nm
15 Nm

10.8.8 Capacity control

Thread at piston rod
Size
M12
M16
M20
M25
▶ Coat thread with Loctite 648 and tighten with calib-
rated torque spanner to indicated torque.
Fixing at piston or piston rod
Size
M10
M16
M16
▶ Tighten with calibrated torque spanner to indicated
torque.
①: only for CS.7551, CS.7561 and CS.7571.
40 Nm
100 Nm
150 Nm
220 Nm
40 Nm
100 Nm ①
150 Nm
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