SB-110-4
57
Screwed connections with aluminium gasket:
sealing screws, plugs and screwed nipples
Size
M10
30 Nm
M18 x 1.5
60 Nm
M20 x 1.5
70 Nm
M22 x 1.5
80 Nm
M26 x 1.5
110 Nm
M30 x 1.5
120 Nm
M48 x 1.5
300 Nm
G1/4
40 Nm ①
G1 1/4
180 Nm
①: Screwed nipple of pressure transmitter: 35 Nm
Sealing screws or plugs with O-ring
Size
1 1/8-18 UNEF
50 Nm
M22 x 1.5
40 Nm
M52 x 1.5
100 Nm
Sealing nuts with O-ring
Thread
AF
3/4-16 UNF
22
50 Nm
1-14 UNS
30
85 Nm
1 1/4-12 UNF
36
105 Nm
1 3/4-12 UN
50
150 Nm
2 1/4-12 UN
65
180 Nm
AF: width across flats in mm
10.2 Special screwed connections
10.3 Sight glasses
Also mind when mounting or replacing:
▶ Tighten sight glasses only with calibrated torque
spanner to indicated torque.
▶ Do not use a pneumatic impact wrench.
▶ Tighten flanges of sight glasses in several steps to
indicated torque.
▶ Check sight glass visually in detail before and after
mounting.
▶ Test changed component for tightness.
Sight glasses with sealing flange
Screw size
M8
14 Nm
M10
18 Nm
Sight glasses with union nut
Size
AF
1 3/4-12 UN
50
150 Nm ①
2 1/4-12 UN
65
180 Nm
AF: width across flats in mm
①: also prism unit of OLC-D1
Screwed sight glass
Size
AF
1 1/8-18 UNEF
36
50 Nm ②
②: also prism unit of OLC-D1-S
Screwing cap of the opto-electronic unit of OLC
maximum 10 Nm
10.4 Electrical contacts
DANGER
Danger of electrical shock!
Disconnect supply voltage of compressor.
Size
Nut
Screw
M4
2 Nm
M5
5 Nm
M6
6 Nm
14 Nm
M8
10 Nm
25 Nm
M10
30 Nm ①
40 Nm ②
M12
40 Nm ②
M16
40 Nm ②
①: with reciprocating compressors 20 .. 30 Nm
②: 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.
