Flowserve ER 50-1 - Manual (Page 15)

5
Electrical Connection
Wiring via four-pole connector.
Screened four-core cable, e. g. I-Y(St)Y  x  x 0.8 or LIYCY 4 x 0.5 mm².
Max. length 00 m with conductivities from 0 μS/cm.
Max. length 30 m with conductivities from 0.5 μS/cm.
Max. length 5 m with conductivities from 0.5 μS/cm and application of the ancillary unit URN 
(4 V DC).
. Loosen screw
5, Fig. 6.
. Take the terminal box off the level electrode, leaving the sealing element 9 on the contact plate 0.
3. Remove cover 6.
4. Press connecting plate 8 out of the upper part of the terminal box 7.
The upper part of the terminal box can be turned in steps of 90°.
5. Detach cable gland and cable clamp ! from the upper part of the terminal box 7.
6. Run cable through cable gland " and upper terminal box 7 and connect the terminals of the
connecting plate 8 according to the wiring diagram.
7. Press connecting plate 8 into the upper part of the terminal box and align the cable.
8. Hold cable with cable clamp ! and cable gland " in position.
9. Mount cover 6 and insert screw 5.
0. Put upper part of the terminal box onto the level electrode and fix it firmly with screw 5.
ER 50-1, ER 56-1
Tools
■
Screwdriver for cross-recess head screws, size 
■
Screwdriver for slotted screws, size .5, completely insulated according to DIN VDE 0680
■
Open-end spanner 7 mm A. F.
Wiring diagram
Fig. 11