Points For Attention During Installation; 6.1 General; Cable Joints - VARISCO K Serie Instrucciones Para El Uso Y La Manutención

resistance should be measured and the pump run for 30 mins each month. If the
pump cannot be run due to lack of water in the sump it should be inspected and
turned over by hand each month & prior to being put back into service. If the insulation
resistance drops below 10 Mega-Ohm contact VARISCO.
5.2.2 The power source must be shut off and isolated at the control panel when the pump
is not in service
5.2.3 If the pump is disconnected from the control panel when not in service the cable end
should be protected as described in paragraph 5-1-3.

6.POINTS FOR ATTENTION DURING INSTALLATION

6.1 GENERAL

6.1.1 Check that the dimensions of the sump are correct and large enough so that the
pump can be installed and removed for servicing.
6.1.2 Thoroughly clean and remove all rubbish from the sump and general installation area
to prevent this finding it's way into the pump and clogging the impeller causing possible
motor failure.
6.1.3 Check the accessories and controls are complete.
6.1.4 Carry the pump only as described in section 4.
6.1.5 If the pump is being installed free standing in a river or other area where the bed is
mud or sand place a support of bricks on the bottom first to prevent the pump settling
into the mud. (see figure 1)
6.1.6 To prevent mechanical damage all cables laid under ground must be properly installed
in underground electrical conduit specifically designed for this purpose, cables must
not be installed directly in the ground or in concrete. (Please refer to figure 2 below).
6.1.7 The pump must be earthed by connecting the earth (green) wire. Verify the grounding
continuity by checking that the grounding wire
6.1.8 Ensure all electrical cables are securely supported and that there is no loose cable
which could be sucked into the pump inlet
6.1.9 After installing the pump, secure the lifting chain or wire rope to a wall or other rigid
surface, outside of the pit, to prevent the possibility of it becoming submerged in
waste.
6.2

CABLE JOINTS

6.2.1 If it is necessary to extend the pump supply cable ensure that the cross sectional
area of the extension cable used is of sufficient area to prevent voltage drop. Ensure
that the cable joint is waterproof and secure.
6.2.2 Connect each pair of wires (R-U, S-V, T-W) using a Sleeve Joint and staggering the
joints as shown below in figure 3
Primary Insulation layer: Paste each individual wire joint with glue and wind with a
strip of natural rubber. Then wind with waterproof vinyl.
Secondary Insulation layer: Gather together all the individual wires into one cable
and repeat the above insulating procedure on the complete cable ensuring that the
insulation covers the original cable insulation at both ends by a minimum of 220mm.
The thickness of the joint must be less than twice the original cable diameter.
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