WITTUR WSG-SF Series, Руководство по эксплуатации

Страница: 76 / 112

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-SF
Operating Instructions
EN
Code: GM.8.004284.EN
Date: 28. Jan 2020
Version: 0.16
Page: 76
Technical specifications
INTORQ | BA 14.0214 | 09/2017 15
3.1.5 Hand-release (optional)
To temporarily release the brake in the de-energised state, a hand-release function is available as an option
(instead of the transport safety bolts otherwise used). The hand-release system works on both brake circuits
together.
3.1.6 Optional cover ring
This design reduces the penetration of spray water and dust. It also prevents the spread of abrasive particles
outside the brake. This is achieved by a cover ring over the armature plate and rotor.
3.1.7 Project planning notes
❚
The brakes are dimensioned in such a way that the specified rated torques are reached safely after a
short run-in process.
❚
However, as the organic friction linings used do not all have identical properties and because environ-
mental conditions can vary, deviations from the specified braking torques are possible. These must be
taken into account in the form of appropriate dimensioning tolerances. Increased breakaway torque is
common, in particular after long downtimes in humid environments where temperatures vary.
❚
Check the braking torque when the brake is being used on the customer's friction surfaces.
❚
If the brake is used as a pure holding brake without dynamic load, the friction lining must be reactivated
regularly.
NOTICE
❚
The hand-release is designed for activation via a Bowden cable.
❚
An individual brake circuit can only be released electrically.
NOTICE
It is possible to retrofit the hand-release system, 29. The hand-release is delivered as a
mounting kit. It can only be installed on the motor after the brake has been installed.