Blatt/
sheet
D729MGB.017
Datum/
date
23.05.2007
Stand/
version C-07.09.2011
Geprüft/
approved WAT/MZE
Änderungen vorbehalten!
Subject to change without notice!
Progressive Safety Gear
USG-25P
Operating Instructions
4.1
First acceptance test
Operational reliability of the installation is as-
sured. The quality and function of individual com-
ponents are subject to thorough inspection and is
checked before dispatch from our works. The
safety gear system should undergo an opera-
tional test before commissioning or before possi-
ble inspection done from the local authorities.
First test run after installation
Before the first test run:
Clean the guide rails!
The protective coating of grease is to be
carefully removed from the guide rails!
The cleaning of the guide rail must be
done with a disc brake cleaner or a similar
fluid. It is not allowed to do mechanical
cleaning like filing, grinding. If the surface
cannot be cleaned properly contact the
guide rail manufacturer.
Clear all people and objects from the lift
shaft before commencing the test run
Risk of crushing injuries!
The entire lift travel path should be slowly trav-
elled (in inspection mode) before the functions
tests. Attention should be paid to the clearance of
all fastened parts, especially with regards to the
guide brackets/safety gear devices. Find and re-
move any protruding bolts or other dangerous re-
strictions well in advance.
Preparations before tests:
When sliding guides shoes are used, a thin
coating of the guide rail oil is to be ap-
plied to the guide rails.
When roller guide shoes are used the
guide rail may not be lubricated at all.
The lubrication oil may not include high
pressure additives.
•
Check the activating force of the safety gear
synchronisation (it should be between 200
and 250 N). This value can be higher if the
travel is over 75m. Calculate the minimum re-
quired force F
1
as follows:
F
1
=
mass of overspeed governor rope x down-
wards acceleration x safety factor (2)
e.g.:
F
1
min = 80kg x 1,5m/s 2 x 2=240N
This is the minimum force which should be
measured on the safety gear synchronisa-
tion to prevent unintended gripping. If the
force is less than the retaining spring of
the safety gear synchronisation must be
adjusted.
•
Check the tripping force of the overspeed
governor F
2
:
This force must be at least twice as high as
the force measured on the safety gear
synchronisation.
e.g.:
F
1
= 240N =>
F
2
min = 2 x F
1
= 2 x 240 = 480N
The maximum tripping force F
2
max of the
overspeed governor is 1100N +100N.
4
Function testing
