An inspection or replacement of the backstop is also required in the following circumstances:
- in case of disassembly of the gear unit or one of its components
- in the event that abnormal wear or material break-out of gears, bearings or any other component or
pollution of the oil has been detected in the gear unit, since this may have affected the condition of the sprags
and raceways of the backstop.
The outcome of the periodical inspection is to be reported in a log book.
Never loosen any part of the backstop while the gear unitis loaded: loosening the backstop may
cause reversal of the drive and running back of the load. Check if the gear unit is not loaded before
loosening the backstop and secure the drive against unintentional movement.
STANDARD BACKSTOP INTEGRATED IN THE GEAR UNIT:
These backstops are lubricated by the oil bath of the gear unit and require, apart from the regular inspections
indicated above, no further maintenance.
Alteration of the direction of rotation of a backstop may only be carried out by qualified personnel
authorized by Hansen Industrial Transmissions nv.
11. START UP
11.1. ALL GEAR UNITS
Check the internal components of the gear unit for corrosion before starting up the gear unit.
Repeat this check after each extended period of standstill (refer to section 12.6).
The result of this inspection must be documented and made available on request.
Any evidence of corrosion on internal components of the gear unit must be reported to Hansen Industrial
Transmissions nv.
Before start up, check the oil level with the dipstick and make sure that all grease lubricating points are
filled.
Although all greasing points have been greased before delivery, it is advisable to give a few shots with a grease
gun before start up.
Check all fixation points between gear unit and foundation. They may require retightening after some running
time.
Make sure that protection hoods and air guiding plates, if any, are properly fitted.
Gear units can rotate in both directions except when direction of rotation is indicated.
Always refer to the stickers on the gear unit and to the certified drawing.
11.2. GEAR UNITS EQUIPPED WITH A BACKSTOP
The customer has to check the good functioning of the backstop.
On gear units equipped with a backstop, check whether the direction of rotation of the motor
corresponds to the backstop freewheeling direction, before coupling the motor to the gear unit.
In case of complete drive groups, the direction of rotation of the motor has to be checked by means of a phase
meter.
Rotation of the gear unit in reverse direction, even momentarily, may damage the backstop, and is
therefore not allowed.
ENGLISH
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Direction of rotation: clockwise (CW) Direction of rotation: counter-clockwise (CCW)
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