Flowserve NRGS15-1 - Manual (Page 19)

19
Wiring
Connect level switch NRG S 15-1
Use multi-core flexible control cable with a min. conductor size of 0.75 mm² as mains and
control cables.
1. Undo the housing screws and remove the housing lid .
2. Unplug the two-pole terminal strip and the twelve-pole terminal strip from the
electronics insert.
3. Strip off approx. 40 mm of cable insulation coating and remove approx. 5 mm of con-
ductor end insulation.
4. Loosen cable glands and run the mains cables through the lower cable gland
and the control cables through the upper cable glands .
5. Connect mains and control cables according to the wiring diagram (inside of housing
lid) to terminal strips
, .
6. Plug terminal strips , to electronics insert.
7. Seal cable entries by tightenting cable glands . Use sealing plugs for cable
glands that are not used.
8. Replace the housing lid and tighten the housing screws firmly.
Tools
■ Screwdriver for cross recess head screws, size 1 and 2
■ Screwdriver for slotted screws, size 2.5, completely insulated according to VDE 0680
G F
J H
I I
I
H J
H J
I I
F G
Attention
The following relocations of cables with basic insulation are not permissi-
ble: Mains and control cables in low voltage areas
Provide level switch and control circuit with a slow-blow 2.5A fuse.
Provide connected contactors with RC combinations according to manu-
facturer's specification to ensure interference suppression.
Note that the sealing plugs are not scope of the supply.