12
Attention
■
Do not bend the electrode tip when mounting.
■
Do not lag the electrode body.
■
Provide a min. spacing of 14 mm between electrode and earth (flange, boiler wall),
Fig. 7, Fig. 8
■
Observe the minimum distances for the installation of the electrode.
Installation
NRG 16-11S, step 1
1. Screw electrode tip
4
into measuring electrode
1
,
Fig. 4
2. Carefully determine required measuring length, taking minimum length into account.
3. Mark length of electrode tip
4
.
4. Unscrew electrode tip
4
from measuring electrode
1
and cut tip.
5. Screw electrode tip
4
into measuring electrode
1
and tighten. Slide spring
3
along electrode
tip
4
, so that its bent end completely enters into small bore
2
.
6. Slip disk
6
onto electrode tip
4
ensuring that the electrode tip protrudes 2 mm from disk.
Fasten disk with grub screw
5
. Push retaining ring
7
from below over electrode tip against disk
6
.
NRG 16-11S, step 2
1. Check seating surfaces of flange provided on boiler standpipe.
2. Place flange seal
8
onto the connecting standpipe
!
,
Fig. 5
3. Mount level electrode onto the connecting standpipe and fasten with bolts.
4. Tighten bolts uniformly in diagonally opposite pairs.
Important notes
■
For the approval of the boiler standpipe observe the relevant regulations.
■
For typical installation examples refer to page 13 and 14.
Tools
■
Scriber
■
Hacksaw
■
Flat file, cut 2, DIN 7261, form A
