9
Installation
– continued –
NRG 16-50 S, step 1
1. Screw electrode tip
4
into measuring electrode
1
.
Fig. 3
2. Carefully determine required measuring length of electrode.
3. Mark length of electrode tip
4
.
4. Unscrew electrode tip
4
from measuring electrode
1
and cut tip.
5. After visual inspection screw electrode tip
4
into measuring electrode
1
. Slide spring
3
along
electrode tip
4
so that its end completely enters the small hole
2
.
NRG 16-50 S, step 2
6. Check seating surfaces.
Fig. 4
7. Put flange joint
9
onto connecting pipe socket
0
.
Fig. 4
8. Put level electrode onto connecting pipe socket and fix it with four bolts M 16.
9. Tighten bolts in diagonally opposite pairs. The tightening torque depends on the flange joint used.
n
Make sure that the sealing surface of the connecting pipe socket is accurately
machined!
n
Do not bend electrode tip when mounting.
n
Do not lag electrode body above the hexgonal section.
n
Observe minimum spacing of 14 mm between measuring electrode / electrode tip and
protection tube / level pot!
Fig. 5, Fig. 6
n
Observe the minimum spacings when installing the electrode!
Attention
Note
n
For the approval of the boiler standpipe the relevant regulations must be considered.
n
Refer to pages 10 for typical installation examples.
Tools
n
Open-end spanner A. F. 13, DIN 3110, ISO 3318
n
Scriber
n
Hacksaw
n
Flat file, medium cut, DIN 7261, form A
