4
Mechanical installation
Installing the gear unit
Assembly and Operating Instructions – Explosion-Proof Gear Units
41
Exceptions:
1. The following gear units are delivered with a screw plug on the provided breather
hole:
•
Gear unit with pivoted mounting position (dynamic)
•
Gear unit for mounting in an inclined position (stationary)
•
Mounting position MX
A breather valve is supplied in a separate plastic bag attached to the gear unit. Be-
fore startup, replace the highest screw plug with the breather valve provided. Ob-
serve for this the tightening torques in chapter
"
Tightening torques for oil level
plugs, oil drain plugs, screw plugs, breather valves and oil sight glasses" (→
38).
2. For
gear head units
and
gear units with pivoted mounting position
with vent-
ing on the input end, a breather valve is supplied in a plastic bag.
3.
Enclosed gear units
are delivered without a breather valve.
4. In some countries, the breather valve is installed, but not activated due to possible
pressure fluctuations during transport. In such cases the transport protection must
be removed. This activates the breather valve (see chapter
"
41)).
5. Gear units with gear unit venting on fixed piping, with expansion tank, and with
ventilation filter are delivered without a breather filter.
Activating the breather valve
1. Before startup, check whether the transport protection on the breather valve has
been removed and the valve is therefore activated. The following figure shows a
breather valve with transport protection:
2. Remove the transport protection.
ð
The following figure shows an activated breather valve:
24804134/EN – 05/2018