4
Mechanical installation
Installing the gear unit
Assembly and Operating Instructions – Explosion-Proof Gear Units
36
4.6.1
Installation in damp locations or outdoors
NOTICE
Paint can block the breather valve and damage the sealing lips of the oil seals.
Damage to property.
•
Thoroughly cover the breather valve and sealing lip of the oil seals with strips
prior to painting/re-painting.
•
Remove the strips after painting.
Drives are supplied in corrosion-resistant designs with an according surface protection
coating for use in damp areas or outdoors.
•
Repair any damage to the paint work (e.g. on the breather valve or the lifting
eyes).
•
When mounting the motors onto AM, AQ adapters and to AR, AT start-up coup-
lings and slip clutches, seal the flange areas with a suitable sealant (e.g. Loctite
®
574).
•
In case of setup outdoors, the drives must not be exposed to direct sunlight. Install
appropriate protection devices e.g. a cover or a canopy. The protection device
must not cause heat build-up.
•
The system operator must ensure that no foreign objects (e.g. falling objects or
coverings) affect the operation of the gear unit.
4.6.2
Tightening torques for retaining screws
Mount the gearmotors with the following tightening torques:
Screw/nut
Tightening torque ± 10%
Strength class 8.8
Nm
M6
11
M8
27
M10
54
M12
93
M16
230
M20
464
M24
798
M30
1597
M36
2778
M42
3995
M48
6022
M56
9650
24804134/EN – 05/2018
