•
Shut down the power supply; keep the brake
manually open.
The elevator should accelerate to the tripping
speed of the Overspeed governor. When the
tripping speed is reached the Overspeed gov-
ernor must activate the safety gear and the
safety gear must stop the elevator.
If this does not work correct (the elevator
does not stop after 2 - 3 m) release imme-
diately the motor brake so the elevator is
stopped by it.
•
Drive the elevator in up direction in order to
release the safety gear.
Force to lift the elevator after gripping:
F = 1,25 x Fmax
(without rope)
F = 0,6 x Fmax
(with rope)
•
Drive the elevator to a floor and remove the
test weights from the car (only for testing car
safety gear).
•
Do the checks described in the following
chapters.
4.3
Gripping distance
4.3.1
Measuring of the gripping distance “s”
Measure and calculate the gripping distance “
s
” as
described in the following instruction:
Progressive Type Safety Gear
WSGB04, WSGB10
Operating instructions
Blatt/
sheet
D7AMMGB.29
Datum/
date
11.04.2003
Stand/
version D-16.02.2010
Geprüft/
approved WAT/MZE
Änderungen vorbehalten!
Subject to change without notice!
After gripping the wedges leave a slight but defi-
nite polished marking length
L
on the guide rail.
The actual gripping distance s is calculated as fol-
lows:
s = L - Y - 18 (cm)
Y ... Distance between safety gears (see figure on
page D7AMMGB.014)
y= 0 for Simplex arrangement
Before doing a gripping test, it is recommended to
mark the guide rail with a non-greasy pencil in the
area where the gripping should happen. This marks
the measurement of the gripping distance easier.
Gripping traces
