Flowserve NRG 111-11 - Manual (Page 4)

4
Important Notes
Danger
When loosening the electrode steam or hot water might escape. This presents the danger
of severe scalding. It is therefore essential not to remove the electrode unless the boiler
pressure is verified to be 0 barg.
The electrode is hot during operation. This presents the danger of severe burns to hands
and arms. Installation and maintenance work should only be carried out when the system
is cold.
If the internal ceramic insulation breaks hot steam may escape through the lateral relief
vent of the electrode stem.
This presents the danger of severe scalding!
Do not stand close to the electrode during operation.
Usage for the intended purpose
Use level electrode type NRG 111-11 only in conjunction with NRS 1-7 as water level limiter
(low level alarm). The equipment must not be used in explosion risk areas.
Classification pursuant to article 1 of the Pressure Equipment Directive (PED)
Category IV
Designation Safety accessory
CE marking CE 0525
Safety Note
The equipment must only be installed and commissioned by qualified and adequately trained
personnel.
Maintenance and retrofitting must only be performed by entrusted personnel who – through adequate
training – have achieved a recognized level of competence.
Explanatory Notes
Scope of supply
NRG 111-11
1 Level electrode NRG 111-11
1 Gasket 33 x 39 DIN 7603 -1.4301
1 Sealing plug for M 20 connection
1 Surface extension disk with grub screw
1 Lock washer
1 Installation manual