9
Function
Function
Please enter function!
Electrode rod/
Connecting terminal
Length [mm]
Please enter length
Electrode body
Functional earth
e. g. MIN alarm
1
e. g. pump OFF
2
e. g. pump ON
3
e. g. MAX alarm
4
Installation
NRG 10-52, NRG 16-52, step 1
1. Determine required measuring lengths of electrode tips and enter data in
table “Functions”
.
2. Use a bolt cutter to cut the four electrode tips
1 2 3 4
.
2. Deburr faces of electrode tips.
3. Strip off 50 mm of PTFE insulation from the ends of the electrode tips. Make sure that the remaining
insulation is at least 30 mm long, measured from the lower edge of the screwed connection.
NRG 10-52, NRG 16-52, step 2
7. Check seating surfaces.
Fig. 3
8. Place supplied joint ring
2
onto seating surface of the threaded standpipe or flange.
Fig. 3
9. Apply a light smear of heat resistant silicone grease (e.g. WINIX
®
2150) to electrode thread
3
.
10. Screw level electrode into threaded standpipe or flange and tighten with an open-end spanner A. F.
41 mm. The torque required
when cold is 140 Nm.
1
Thermal insulation, provided on site, d = 20 mm (outside of thermal insulation of steam boiler)
2
NRG 1..-52: Joint ring 33 x 39, form D, DIN 7603, 1.4301, bright annealed
3
Electrode thread
4
Insulation of electrode tips
5
Electrode tips
Key
Table “Functions”
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