Mechanical installation
Storage
l
19
BA 12.0023−EN 6.0
4.2
Storage
If you do not install the gearbox immediately, ensure appropriate conditions of storage.
ƒ
Generally
– Store gearbox in dry, clean (dust−free) and sunlight−protected indoor rooms.
– The storage location must be free of vibration and shocks (V
eff
< 0.2 mm/s) to
avoid roller bearing downtime damage.
– Temperature changes with condensate formation must be avoided.
– Do not activate breather element to prevent air exchange with ambient air.
ƒ
Up to one year:
– Store the gearbox with breather such that the breather screw is located at the top.
– Shafts and bright surfaces are delivered with protection against corrosion. Spots
with defective corrosion protection must be re−treated.
– On motors with condensation drain holes (option), the plug screw must be
ƒ
Over one year, up to two years:
– Before storage, shafts and bright surfaces must be provided with a long−term
anticorrosive agent (e.g. Anticorit BW 366 from the company Fuchs).
– Set up gearbox in mounting position A.
– Fill gearbox with oil grade filled in (see nameplate) up to the top breather / oil
bore. Then mount plug screw or breather element (do not activate) again.
4.3
Backstop
To prevent machine operation against the direction of rotation of a machine, e.g. the
running back of a sloping conveyor belt when the motor is switched off, geared motors
with mechanical backstop can be used. With backstops, operation is only possible in one
direction of rotation, the other direction of rotation is inhibited.
The backstops are fitted with centrifugally operated sprags, i.e. at a certain rotation speed,
the sprags lift off and the backstop then operates without any wear and maintenance free.
The lifting speed of the Lenze backstop is reached at a motor speed n
1
> 900 r/min.
(
Stop!
Operation below the lifting speed is only permissible for a short time during
acceleration and deceleration (max. 15 seconds). If the lifting speed is quite
often fallen below due to frequent starts or frequency inverter operation,
please contact Lenze.
Before commissioning, the direction of rotation of the drive must be checked (see Fig. 2).
The direction of rotation is indicated by an arrow on the fan cover. In case of the wrong
direction of rotation, please contact Lenze.
