Figure 36: Test rod check: Step 3
5. If one or more deflector mirrors are used, then the test rod should also be guided
slo
wly through the area to be protected directly in front of the deflector mirrors.
6. Watch the field indicator on the receiver during the check. The field indicator on
the receiver must continuously light up red. The field indicator must not light up
green or flash yellow.
7. After the test rod has been removed from the protective field, make sure that the
protective field is clear and the field indicator is green or yellow.
8. If a dynamic protective field width is used, carry out the test rod check with
minimum and maximum protective field width.
9. If multiple devices are connected with each other in a cascade, carry out the
entire test for each device of the cascade. During the field indicator test, watch the
device that is currently being checked.
4.5.2 Visual check of the machine and the protective device
The following points are often helpful for the definition of the check:
•
Has the machine been retrofitted?
•
Have machine parts been removed?
•
Have modifications been made to the surroundings of the machine?
•
Have the protective device or its parts been dismantled?
•
Is it possible to enter the hazardous area without being detected?
•
Is the protective device damaged?
•
Is the protective device severely contaminated?
•
Is the front screen contaminated, scratched or destroyed?
•
Are there any damaged cables or open cable ends?
If one of the points applies, the machine should be shut down immediately. In this
case, the machine and the protective device must be checked by appropriately qualified
safety personnel.
PROJECT PLANNING 4
8023872/18YZ/2021-01-14 | SICK O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex II 3GD
65
Subject to change without notice
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