10
1. Determine required measuring lengths of electrode tips and enter data in
table "Functions"
.
Fig. 2:
Dimensions are applicable for installation in water with a conductivity
> 10 µS/cm
/ measuring length
< 1000 mm.
Measuring surface extension
9
not required
Fig. 3:
Dimensions are applicable for installation in water with a conductivity
< 10 µS/cm
/ measuring length
> 1000 mm.
2. Use a bolt cutter to cut the three radial electrode tips
6 7 8
and the central electrode tip for
low water
LW
.
3. Only for
Fig. 3:
Reduce the length of the electrode tips
6 7 8
by 2 mm to compensate for the
measuring surface extension
9
.
4. Deburr faces of electrode tips.
5. Strip off 50 mm
Fig. 2
or 17 mm
Fig. 3
of the PTFE insulation from the ends of the electrode tips.
Fig. 4
6. A plastic bag with screws, spacer discs and measuring surface extensions is included in the
terminal box
2
.
7. Slip spacer disc
8
onto electrode tips at equal distances.
Fig. 4
9. Attach a measuring surface extension
9
(only required in
Fig. 3
) to each of the electrode tips
arranged radially around the central electrode tip.
Fig. 4
10. Attach measuring surface extension
0
onto the central electrode tip (LW) and fasten it with the
set screw
a
.
11. Put the retaining ring
b
onto the central electrode tip.
Installation
NRG 16-36, step 2
12. Check seating surfaces.
Fig. 5
13. Place supplied joint ring
4
onto seating surface of the threaded standpipe or flange.
Fig. 5
14. Apply a light smear of heat resistant silicone grease (e.g. WINIX
®
2150) to electrode thread
3
.
15. Screw level electrode into threaded standpipe or flange and tighten with an open-end spanner A. F.
55 mm. The torque required
when cold is 490 Nm.
NRG 16-36, step 1
Function of electrode tip
Connecting terminal
Length [mm]
Please enter length
Low water
LW
1+2+3+4
Pump ON
6
Pump OFF
7
MAX alarm
8
Table "Functions"
- continued -
