Kracht GmbH Installation | 6
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a) Position the housing on the connection plate.
ð Make sure that the seal fit properly.
ð The contact surface must be free of dirt, residual paint etc.
b) Tighten all fastening screws with the specified torque.
ð Rule out any distortion of the device.
ð Pay attention to sufficient screw-in depth of the fastening screws.
1 Fastening screws
Tightening torques Fastening screws
Nominal size 0.025 – 0.2 0.4 - 1 3 - 5 12 - 16
Screw size M6 M8 M12 M20
Strength class 8.8 10.9 – 12.9 10.9 – 12.9 10.9 – 12.9
8.8 – 10.9 –
12.9
Tightening
torques
10 Nm 14 Nm 35 Nm 120 Nm 400 Nm
External manufacturer connection plate/valve block
NOTICE
Use only connection plates or valve blocks from external manufacturers with specified sur-
face and shape tolerances.
Nominal size 0.025 0.04 0.1 0.2 0.4 1 3 5 12 16
Evenness [µm] 10 20
Roughness
height R
t
[µm] 10 10
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