GESTRA NRR 2-52 - How to Use this Manual; Illustrations and Symbols Used; Hazard Symbols in this Manual

6 NRR 2-52, NRR 2-53, URB 55 - USA- Installation & Operating Manual - 850698-00
How to use this Manual
This Installation & Operating Manual describes the correct use of the NRR 2-52, NRR 2-53 level
controller in combination with the URB 55 visual display and operating unit. It applies to persons
who integrate this equipment in control systems, install, bring into service, operate, maintain and
dispose of this equipment. Anyone carrying out the above-mentioned activities must have read this
Installation & Operating Manual and understood its contents.
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Read this Manual in full and follow all instructions.
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Please also read the instructions for use of any accessories.
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The Installation & Operating Manual is part of the product package. Keep it in an easily acces-
sible location.
Availability of this Installation & Operating Manual
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Make sure this Installation & Operating Manual is always available to the operator.
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If you pass on or sell the equipment to a third party, please also hand over the Installation &
Operating Manual.
Hazard symbols in this Manual
Danger zone, dangerous situation
Danger of death from electric shock
Illustrations and symbols used
1. Action to be taken
2.
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Lists
◆ Bullet points in lists
A Keys to illustrations
Additional
information
Read the relevant
Installation & Operating Manual