Gear Unit With Backstop; Gear Unit With Auxiliary Drive - Siemens FLENDER B3 E Series Assembly And Operating Instructions Manual

7.1.3

Gear unit with backstop

Observe details at item 5.8 and item 5.9, "Backstop"!
Before start­up, check whether the backstop can be turned manually in the free­wheeling direction without
exerting undue force. Observe the direction­of­rotation arrows on the housing.
To avoid damaging the backstop or the gear unit, the motor must not be run adversely
to the stop direction of the gear unit.
Observe the notice fixed to the gear unit.
If the gear unit is operated at speeds below the speed at which the backstop
disengages, the backstops must be regularly renewed. The frequency of change is
stated on the dimensioned drawing prepared in accordance with the order and on
a plate on the gear unit. This plate is attached to the gear­unit housing close to the
backstop.
If a backstop with release mechanism is used, the operating instructions for this
backstop must be followed.
Moreover, the dimension "x
that stated on the backstop rating plate.
Before connecting the motor, determine the direction of rotation of the three­phase current supply using
a phase­sequence indicator, and connect the motor in accordance with the pre­determined direction of
rotation.
The unit can be started up once the amount of oil indicated on the notice has been
poured in through the oil­filler plug screw of the backstop. Always use oil of the same
type and viscosity as for the gear unit.
7.1.4

Gear unit with auxiliary drive

Before start­up, check whether the backstop and the overrunning clutch can be turned
manually in the free­wheeling direction without exerting undue force.
Observe the direction­of­rotation arrows on the housing.
The backstop is in free­wheeling operation, when the drive shaft of the main gear unit is rotated
in operating direction of rotation.
Rotation in the other direction of rotation is prevented by the blocking action of the backstop.
The overrunning clutch is in free­wheeling operation, when the motor shaft of the auxiliary
drive is rotated in opposed operating direction of rotation.
When rotating in the operating direction of rotation, the blocking action of the overrunning
clutch (carrier operation) becomes effective. Coupling and, thus, rotation of the output shaft of
the main gear unit in operating direction of rotation takes place.
In the case of auxiliary drives designed for load operation, the brake at the auxiliary motor must
first be lifted in order to check for proper functioning of the overrunning clutch.
To avoid damaging the backstop or the gear unit, the motor must not be run adversely
to the stop direction of the gear unit.
Observe the notice fixed to the gear unit.
Before connecting the main and auxiliary gear motor, the respective rotating field of
the three­phase supply network should be determined by means of a phase­sequence
indicator and both motors should be connected according to the predetermined
direction of rotation.
The main motor and the motor of the auxiliary drive should be interlocked electrically in such
a manner that only one of the two motors can be switched on at the same time.
Prior to startup, the disabling function of the speed­monitoring device of the auxiliary drive,
designed for maintenance drive, should be checked according to item 5.17.1.
" must be checked; "x
min.
BA 5033 EN 03/2011
77 / 96
" must not be smaller than
min.