Screwed Joints Of Terminal Box Cover; Sealing Screwed Joints For The Openings Into Terminal Box And Module Housing; Electrical Contacts - Bitzer OSKA9553 Instructions De Service

10.4 Screwed joints of terminal box cover

Size
M6
▶ Screw in all screws with washers.
Case A: terminal box and terminal box cover of metal
Case B: terminal box and terminal box cover of plastic
10.5 Sealing screwed joints for the openings into
terminal box and module housing
Size
M16 x 1,5
M20 x 1,5
M25 x 1,5
M63 x 1,5
PG16
The screwed joints consists of screw and counter nut.
Sealing plug: 2.5 Nm
LED sight glass
Size
M20 x 1,5
Gas permeable plug
Size
M20 x 1.5

10.6 Electrical contacts

DANGER
Danger of electrical shock!
Disconnect supply voltage of compressor.
SB-520-2
Case A Case B
5 Nm 4 Nm
2.0 Nm
2.0 Nm
2.5 Nm
2.5 Nm
4.0 Nm
2.5 Nm
10 Nm
Size
M4
M5
M6
M8
M10
M12
M16
①: Mount with a pair of wedge lock washers.
▶ Tighten all screwed connections on terminal plate
manually with calibrated torque spanner to indicated
torque.
▶ Do not use any pneumatically driven tool.
FI current bars at CSV.
Size
M10
▶ Mount the screwed connection in this order: screw,
washer, FI connection, current bar, pair of wedge
lock washers, nut.
Cable fixing on terminal strips
Spacing pitch
3,81 mm
5,08 mm
These tightening torques apply with and without cables.
Protective earth conductor at earth terminal strip
Size
M5
▶ Mount the screwed connection on the terminal strip
in this order: cable lug, washer, single-coil spring
washer, crosshead screw.
Protective earth conductor for housing cover at
module housing bottom
Size
M6
▶ Mount cable lug with toothed washer.
Nut Screw
2 Nm
5 Nm
6 Nm
10 Nm
30 Nm 40 Nm ①
40 Nm ①
40 Nm ①
56 Nm
0,25 Nm
0,5 Nm
1.3 Nm
Nut
4 Nm
35