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5 Safety
5.4.1
Hazards during transporting
The device may be damaged when lifting and putting down, tipping over or falling
down. By disregarding the load bearing capacity of the lifting gear, the device may
fall. There is a risk of severe injuries for persons in the vicinity.
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• Lift the device only on the intended lifting eyes.
• Before lifting, make sure that the load is safely secured.
• Never stand under suspended loads.
Observe the weight specifications for the ultrasonic gas meter at hand.
5.4.2
Hazards during installation
When you carry out work on electric systems in potentially explosive environ-
ments, incorrect work may lead to explosions.
• Make sure that no potentially explosive atmosphere is at hand before starting
work.
If personnel that have insufficient qualifications carry out work, they can incorrectly
assess hazards. Explosions can occur.
• Carry out the work only if you have the respective qualification and are a
trained specialist person.
• Carry out the installation according to the following standards:
• CAN/CSA-C22.2 No. 0-1191
• CSA C22.2 No. 30
• CSA C22.2 No. 142
• UL 916
• UL 1203
or similar national standards.
In potentially explosive atmospheres, dangerous voltages can still remain as igni-
tion sources for up to one minute after being switched off.
• Disconnect the device from the power supply before starting the maintenance
work.
• Securing against reconnection.
• Cordon-off the work area of the device, e.g., using a barrier and signs.
• After switching off the device, wait at least one minute before starting work. En-
sure that the device is voltage-free. Then connect to earth and short-circuit.
Manual USM GT400 · EN10 · May 2021
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