O
PERATING
M
ANUAL
7. M
AINTENANCE
ThyssenKrupp Aufzugswerke GmbH
51
Issue 06.2004
7.3
Replacing of brake monitoring switch
•
Secure car and counterweight
•
Switch off power supply and protect installation against unintentional
switching on
•
Disconnect defective switch at connection box (fig. 11) and replace
•
Mount new switch at brake coil body, fig. 13, pos. 10, and connect to
terminal box
Setting and checking of brake monitoring switch:
•
Screw in setting screw M4 for switch operation by two to three screw
turns. The switching contact of the brake monitoring switch shall not
touch the setting screw
•
Apply operating voltage at brake circuit to be set
•
Set distance between switching contact and setting screw to 0.15 mm
using a feeler gauge
•
Unscrew setting screw until the contact of the microswitch reaches the
switching point
•
Remove feeler gauge; disconnect operating voltage
•
Check microswitch for correct functioning by switching the brakes on and
off repeatedly
•
Seal fastening screws of release monitoring using sealing wax
•
Put installation into operation
7.4
Silencing of the brakes
The used noise dampening has been adjusted at the factory. However the
noise dampening is subject to a certain aging dependent on the application
or operational conditions (switching frequency, torque adjustment, natural
drive vibration).
The brake must be completely exchanged, if the noise behaviour of the brake
rises to an inadmissible level.
An exchange of the damping elements is only possible at the manufacturer.
Содержание Mini gearless DAF270
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