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Release 7/2009 Ver. 1.0
Technical Manual: GS-120 Light Curtain Systems
TAPESWITCH CORPORATION
Phone: 631-630-0442
100 Schmitt Boulevard
38
Fax: 631-630-0454
Farmingdale, New York 11735
www.tapeswitch.com
5.0 PERIODIC CHECKING,
SERVICING, AND MAINTENANCE
5.1 PERIODIC CHECKING
5.1.1 COMMISSIONING CHECKS
The commissioning examination should be carried out
by persons who are competent and who possess all the
information supplied with the machine and its safety
equipment. The results of the examination should be
recorded and copies of this record should be kept by the
user and the employer of the person performing the
examination. The person carrying out the examination
should ensure that the following general standard of
performance is met:
(a)
It should not be possible for the dangerous parts of
the machine to be set in motion while the light curtain is
penetrated.
(b)
Penetration of the light curtain during a dangerous
phase of the operation of the machine should result in
the dangerous parts being arrested or, where
appropriate, assuming an otherwise safe condition,
before any part of a person can reach them. It should
not be possible for the dangerous parts to be set in
motion until the curtain has been cleared, the safety
system has been restored to its normal condition, and
the machine controls have been reset.
The person performing the examination should also:
(c)
Inspect the position of the light curtain to ensure that
it is set at the correct distance from the dangerous parts
of the machine as recorded on the machine information
label or plate.
(d)
Ensure that additional safeguarding measures have
been provided where necessary to prevent access to
the dangerous parts of the machine not protected by the
light curtain.
(e)
Where appropriate, test the overall system response
time using a suitable device and ensure that it is the
same or less than that recorded on the machine
information label or plate.
(f)
Test the detection capability of the light curtain as
described in section 5.1.4 of this manual.
(g)
Examine the machine controls and connections to
the GS-120 system to ensure that the requirements
described in this manual and in the machine manual
have been met.
(h)
Examine the stopping performance monitor (if
installed) to ensure that it is installed and functioning
correctly. Ensure that the means whereby the stopping
performance can be assessed by the operator is
indicating correctly.
(i)
Test the muting arrangements (if installed).
(j)
Examine brakes or clutches (if installed) as
recommended.
NOTE: No stopping performance monitor or muting
facility is provided with the basic GS-120 system
and there is no means provided for the connection
of such devices to the system. These devices may
however have been provided elsewhere in the
machine control system.
5.1.2
6 OR 12 MONTH PERIODIC CHECKS
These examinations should be carried out by competent
persons. The results should be recorded and a copy
kept by the user.
The person should ensure that the general standard of
performance as described in section 5.1.1
(a)
and
(b)
is
achieved.
The person should perform the commissioning
inspections and tests detailed in section 5.1.1. When
checking the stopping performance monitor, item
(h)
,
any equally effective means of determining that the
overall system response time, as recorded on the
machine information label or plate, is not exceeded is
acceptable.
In addition the person should:
(a)
Examine all switching elements in the switching
paths controlled by the light curtain outputs to ensure
that they are functioning correctly and are not in need of
maintenance and or replacement.
(b)
Inspect the machine to ensure that there are no
mechanical or structural aspects which could prevent
the machine from stopping or assuming an otherwise
safe condition when called upon to do so.
(c)
Examine and inspect the machine controls and the
connections to the GS-120 system to ensure that no
modifications have been made which could adversely
affect that system, and that suitable modifications have
been correctly performed and properly recorded.