NORD Drivesystems B1904 - Manual (Page 18)

Operating and Installation Instructions FDB (Getriebebau NORD)
Version 08.2011
Page 18 of 23
- Tighten the fastening screws with the tightening torque according to 3.2.2.3
- Position the O-ring (item 13; only for brakes with option “Operating noise-damped”)
- Position the dust ring (item 9; only for brakes with option S )
- Screw the manual release lever (item 5.1) with the washer in position into manual release
bracket (item 5) and tighten it at the hexagon faces (only brakes with manual release =
option H
)
- Adjust the braking torque by means of the threaded ring (item 10). Adjusting values: refer to
3.2.2.2 (only brakes according to design C)
4.2 Electrical Installation
Carry out the electrical connection with power off. The operating voltage (DC) of the brake is
indicated on the magnet housing (see 3.1.1 and illustration 3.2 ).
ÎStop!
For the electrical connection the detailled Instruction „Electrical connection
of PRECIMA Spring-Applied Brakes“ has to be observed!
4.3 Conversions and Supplements
4.3.1 Change of Braking Torque
A change of the braking torque (with design C in addition to the adjusting ring as per 3.2.2.2)
can be carried out by changing the number of springs according to table 3.2.2.1. In doing so,
pay attention to the uniform distribution of the externally arranged springs.
4.3.2 Subsequent Assembly of Manual Release (illustration 4.2)
Brakes that were directly ordered as brakes with a manual release (option H), have already a
manual release mounted and the adjustment must not be changed (refer to safety information
undsr 3.2.1).
A manual release handle can be fitted by the customer using the procedure below:
- Place the manual release handle (item 5) onto the magnet body (item 1.1 / 1.2) and insert
the two pins with cross threaded hole (item 23) in the appropriate bores of the manual
release handle.
- Insert the screw (item 20) with the washer in position (item 21) and the pressure spring (item
22 ) into the bores of the armature disk. The screws will pass through the armature plate and
magnet body; the washer is positioned between the head of the screw and the armature
plate The pressure spring runs through the armature and is held by the washer and magnet
body on the other side.
- Screw the screws into the pins (item 23) and adjust the dimension y according to 3.2.2.3.
Lock both screws in the correct adjusting position by means of screw sealing wax.
Î Attention!
For safety reasons, the adjustment of the manual release must not be changed even after
a subsequent mounting by the customer! A readjustment of the braking air gap a
(refer to
5.1.3.1) does not require any adjustment of dimension y!