4.3
Braking mark
4.3.1
Measuring of braking mark
The braking mark is measured on the side of the
tripping wedge.
If the braking marks didn’t have the same
length on the left and right side, take the
shorter measurement.
The different length between the two
braking marks must be less than 35mm.
As long, as the general appearance of the
scratch patterns on the different sides are
similar, slightly different scratch patterns
on the different sides are acceptable
(caused e.g. by the guide rail surface eve-
ness) if the test is done according manual
and the length of the brake mark is within
the limits.
s = length of the braking mark
4.3.2
Check of braking mark “S”
Read the minimum and maximum tolerated brake
distance from the belonging table based on the
weight situation of the lift.
-
If the braking distance “
s
” is within the toler-
ated values, the safety gear is set correctly!
-
If the braking distance “
s
” is out of the toler-
ated values, the safety gear must be replaced
(please contact WITTUR).
Example:
Test method A
Medium Car: P/Q=0,81-1,2
P.....mass of empty car (incl. sling and door)
Q.....rated load
Test speed:
vtest = 1,6 m/s
The braking distance:
s = 25 cm
The table shows that the value for the braking dis-
tance “s” is in the tolerated values - i.e. the brak-
ing mark is OK (the braking distance for vtest = 1,6
m/s is min. 22,4cm and max. 35,7 cm).
Änderungen vorbehalten!
Subject to change without notice!
© WITTUR – All rights reserved
s
Progressive Type Safety Gear
CSGB-01C
Operating instructions
Blatt/
sheet
PM.7.003609.EN.017
Datum/
date
14.07.2016
Stand/
version
Geprüft/
approved
WAT/MZE
A-02.05.2017
