Braking System EBRA20
Operating instruction
5.2 Dynamic functions test
Nobody should be in the lift car or on the
car roof when carrying out test runs or
functions tests!
Test procedure according to EN81-1: 1998
appendix (D) point (n) page 73:
The test can be made while the empty car is
ascending at not less than rated speed, using only
EBRA20 for braking.
The car can be driven upwards using the motor
and when the nominal speed is reached the
EBRA20 is activated by the OSG switch (F) and the
motor brake is kept open manually during the
braking.
The EBRA20 can be actuated as well by switching
OFF the battery (J) and then the power supply (G).
Do not open the overspeed governor con-
tact switch (F) shortly after recycling the
EBRA20 (G) because there is 200VDC over
the overspeed governor contact switch
contacts and they may be burned if
opened. The voltage drops to about 30 VDC
in 2 seconds.
5.2.1 Visual checks after a braking test
After each test or activation of the EBRA20 check
that there are no defects that can impair the nor-
mal run of the elevator.
Go onto the car and check following items:
- existence of sliding inlays
- existence of brake lining
- visual defects of brake system parts
- friction marks
- defects on the EBRA20 body
If there is any defect the safety gear must
be replaced!
Change sliding inserts or brake lining if
necessary.
Blatt/
sheet
D7AJMGB.012
Datum/
date
23.05.2002
Stand/
version
23.05.2002
Geprüft/
approved
WAT/MZE
THE LMC LIFTCOMPONENTS MANUFACTURING AND COMMERCE COMPANY
Änderungen vorbehalten! Subject to change without notice!
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