Flowserve NRGS15-1 - Manual (Page 14)

14
Establishing Functions
– co ntinu ed –
S elect function
- co ntinu ed -
Factory setting
The factory setting of level switch NRGS 15-1 without pushbuttons is function 1 and with
pushbuttons is function 2.
The preset time delay for pump control is 5 sec. and the preset sensitivity range is
10 µS/cm.
Cutting electrode tips to length
1. Determine the lengths of the electrode rods as a function of the level-dependent
switchpoints (measured from the gasket face
) and enter the data in the table blow.
2. Then cut all electrode tips (see Fig. 2) to the required lengths by using a bolt cutter.
3. Deburr faces of electrode tip ends.
4. Strip off 50mm of PTFE insulation from the ends of the electrode tips (see Fig. 2).
Make sure that there is an electrical resistance path of > 14 mm between the electro-
de tips.
5. Arrange PTFE spacer discs so that the electrode tips cannot come into contact with
each other.
Function 5
Electrode rod 1 Low level alarm 1
Electrode rod 2 Pump off
Electrode rod 3 Pump on (discharge control) tv= 0 sec.
Electrode rod 4 High level
Electrode
tip
Function
Cable/
Connector
Length
[mm ]
1 1
2 2
3 3
4 4
ON
1 2 3 5 4 6 7 8 910
E