Amendment of the original operating
instructions
Inspection of the bolted connection of the
worm wheel of the elevator machines
ZAS0, ZAS1, ZAS2, ZAS3
A-TIA19_04-GB
ZIEHL-ABEGG SE | Heinz-Ziehl-Straße | 74653 Künzelsau | Tel. +49 7940 16-0 | drives@ziehl-abegg.de | www.ziehl-abegg.de
A-TIA19_04-GB Ausgabe: 1912 Index 001 Erstellt am: 22.03.2019
Seite 4/8
As an option, the empty elevator car can be sent to the lowest floor, by a light and controlled
activation of the manual hand release, the worm wheel can be brought to the required position as
well.
2.3.3 Inspection of tightening
The elevator must be switched off by the main
switch and protected against restart.
Do not activate the manual hand release!
Inspection goal:
Identi
ication of loose nuts.
pply the suitable tool (2) onto the nut (1) of the
bolted connection and turn clockwise with
moderate force according to the following table
ithout any jerk.
On the side of the fitting bolt no spanner is
applied for counterholding.
Figure 4: Direction of the rotation of spanner for
inspection of tightening the nuts
Gearbox SW
Nut
Inspection
torque
approx
Lever
length
approx
Force
approx Force
approx
Nm mm N kg
SWG0 16 / 17 20 200 100 10,0
SWG1 18 / 19 35 220 150 15,0
SWG2 18 / 19 35 220 150 15,0
SWG3 21 / 22 55 180 300 30,0
Table 1: Overview gearboxes – spanner sizes – test forces
After the evaluation of the tightening, according to 2.3.4, the next nut has to be brought into
position according to 2.3.2.
The inspection of the bolt connection of the worm wheel of the gearbox, is completed when all 6
nuts of the worm wheel have been inspected according to the described method above.
