Flowserve NRGS 16-1 - Manual (Page 10)

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5. Check seating surfaces of threads or flange provided on vessel or boiler standpipe.
Fig. 5
6. Place joint ring onto seating surface of electrode Fig. 3. Use only joint ring
(of stainless steel 1.4301) D 33 x 39 to DIN 7603 supplied with electrode.
7. Apply a light smear of silicone grease (e. g. DOW Corning 111 Compound)
to electrode thread .
8. Screw level electrode into threads or flange provided on vessel or boiler standpipe
and tighten with a 41 mm open-end spanner. The torque required is 140 Nm when
cold.
Technical Data –
continued
Installation
NRGS 16 -1, NRGS 16 -1 S
NRGS 16 -1
Indicators and adjustors
4 red LEDs for signalling “electrode submerged”, “output relay energized”
1 four-pole DIP switch for changing sensitivity
Cable entry
Cable gland with integral cable clamp
2 x PG 9
1 x PG 16
Protection
IP 65 to DIN 40050
Max. admissible ambient temperature
70 °C (158 °F)
Weight
approx. 1.8 kg
1. Determine required measuring lengths of electrode rods and enter data in table 1
Fig. 3, Fig. 4
2. Cut electrode rods 1 , 2 , 3 and 4 accordingly.
3. Deburr faces of electrode tips.
4. Strip off 50 mm of PTFE insulation from the ends of electrode tips.
NRGS 16 -1 S
9. Check seating surfaces and place flat gasket on connection standpipe.
0. Place blind flange with bore together with level electrode onto connection
standpipe and fix with bolts. Tighten bolts in diagonally opposite pairs. Fig. 4
1
D D D D D
C C C C C B B B B B
A A A A A