Flowserve NRGS 16-4 - Manual (Page 4)

4
Important Notes
Usag e for the intended purpose
The level electrode NRG 16-4 is exclusively designed for detecting and signalling levels in liquids with a
minimum electrical conductivity.
The equipment must only be used within the admissible pressure and temperature ratings.
Any type of use differing from the usage described above must be considered as improper. The resulting
risk will have to be borne by the user alone. The manufacturer hereby expressly rejects any claims for any
damage resulting from improper usage.
Safety note
The equipment must only be installed and commissioned by qualified and competent staff.
Retrofitting and maintenance work must only be performed by qualified staff who - through adequate train-
ing - have achieved a recognised level of competence.
For installation, removal, commissioning and operation of the equipment every person who works with the
equipment must have read and understood the complete installation manual. Furthermore, responsibilities
must have been defined clearly and unambiguously and must be adhered to.
Usage of the equipment for the intended purpose includes compliance with the rules and notes in these
installation instructions for installation, removal, commissioning and operation.
The operating company must ensure that, whenever the equipment is being operated, it is in perfect condition.
Working methods that jeopardise safety must not be used!
Danger note
When loosening the level electrode steam or hot water might escape. This presents the dan-
ger of severe scalds to the whole body.
It is essential not to mount or dismantle the electrode unless the boiler pressure is verified
to be zero!
The level electrode becomes hot during operation. Touching the hot equipment presents the
risk of severe burns to hands and arms. All installation, removal and maintenance work must
only be performed when the equipment is cold.
ATEX (Atm osphères Explosibles )
The equipment is a simple item of electrical equipment according to DIN EN 50020 section 5.4. According
to the European Directive 94/9 /EC the equipment must be equipped with approved Zener barriers if used
in potentially explosive areas.
Applicable in Ex zones 1, 2 (1999/ 92/EC).
The equipment does not bear an Ex marking.
The suitability of the Zener barriers is certified in a separate document.
Dange r