Date of
posting: 6 July 2006.
Schindler Lifts
Australia Pty. Ltd.
ABN 19 005 838 773
52-54 O’Dea Avenue
Waterloo NSW 2017
Australia
Tel. +02 9931 9900
Fax +02 9931 9945
www.au.schindler.com
P O Box 7153
Alexandria NSW 2015
Australia
Subject
Safety
Alert - Bronze rim of crown wheel in W200/W250 gears
Installation: (Nr,
Building Address,…)
Dear Sir / Madam
The lift/s identified
above were originally installed with a Schindler
manufactured gearbox
referred to as model
W200 or W250. During its lifetime, the gear set used in this
gearbox is
subject to measurable
wear & tear, which may require the replacement of the gear
set before
it is substantially
weakened by the loss of material.
In addition, the gear
set may be exposed to extraordinary shocks in it’s lifetime
(such as when
full load safety gear
tests are performed), and over a long period of time,
symptoms of fatigue
may occur. This may
lead in isolated cases to the bronze material of the crown
wheel rim in
the gearbox not
withstanding the loading. According to experience so far, it
can be assumed
the majority of
installations do not yet show symptoms of fatigue. However,
with continued
operation after
repeated severe impacts, deterioration in the life of the
gear set is possible,
particularly where
installations are more than ten years old.
As a preventive
measure, Schindler performs ultrasonic tests of the bronze
rim of the gears
concerned in order to
identify this risk. Should the wear continue undetected, it
could result in
a rupture of the
bronze rim, leading to uncontrolled movement of the lift
car, which may in turn
lead to serious
injuries.
Schindler Lifts
Australia Pty. Ltd.
Head Office
Page 2 of 2
responsive people, smart products
Schindler Lifts
Australia Pty. Ltd.
ABN 19 005 838 773
52-54 O’Dea Avenue
Waterloo NSW 2017
Australia
Tel. +02 9931 9900
Fax +02 9931 9945
www.au.schindler.com
P O Box 7153
Alexandria NSW 2015
Australia
This testing is
conducted on all relevant equipment maintained by Schindler.
However, as we
do not maintain your
equipment we recommend that you consider our offer in regard
to
minimising your risk.
Schindler, as original
equipment manufacturer, strongly recommends performing
ultrasonic
tests of the crown
wheel bronze rim of such installations. Upon your request,
Schindler will
perform this
measurement at a flat fee of $1,500 per gear set.
If the ultrasonic test
shows irregularities in the bronze material, the gear set
must be replaced.
If you have any
questions regarding this communication, please contact Mr
Robert Roseby at
(02) 9931 9900.
Yours sincerely
Schindler Lifts
Australia Pty. Ltd.
John Bundy
General Manager,
Existing Installations
1. Product Alert: Johns & Waygood "Special Home Unit" (SHU)
Machine Gearbox
Notified by Otis Elevator Co Pty Ltd, 5 June 2001.
Contact: John Wagschall, 02.9827.3600
2. Schindler Gears W200 & W250
Notified by Schindler Lifts Australia, 24 August 2001.
Contact: Darrin Corrigan, 02.9931.9900
3. Safety Alert: Otis Machine Type 10ATL
Notified by Otis Elevator Co Pty Ltd, 2 April 2001
Contact: John Wagschall, 02.9827.3600
4. E200 Brake shoe pin.
Notified by Kone Elevators Australia Pty Ltd, 3 August 2001.
Contact: Trevor Young, 02.9577.7000
Date of posting: 19
March 2007
