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Borehole Pump Specialists

Installation procedure - using a crane

Read this manual thoroughly - then ensure you also have the following on site:

  • Submersible Pump & Motor
  • Base plate and wellhead assembly
  • The required length of Boreline (Supplied coiled & strapped - take care not to damage the hose if cutting off the strapping with a knife.)
  • Electrical cable - at least equal to the length of Boreline plus 5% minimum.
  • Two Boreline Couplings consisting of a coupling body and two outer rings. The latter each comprise three equal segments connected to each other by Allen screws. (For the 8" hose the two rings are of different widths.)
  • Break-Off Plug fitted to lower coupling (recommended for 3" hose & above)
  • Sufficient Boreline Cable Straps to attach the power cable to the Boreline along the entire length of the riser. A cable strap is needed for each metre (3 ft) of riser.
  • Short lengths of Polyethylene or PVC hose to act as a cable guard where cable passes over the coupling - and PVC tape to secure it to the cable.
  • 2 Boreline Installation Clamps*
  • Tripod or Crane and / or the Rolling Wheel assembly*

* These items are also required for pump retrieval.

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  1. Ensure that the ends of the riser are square - trimming with a sharp knife if necessary.
  2. Identify the lower Boreline coupling and ensure the Break-Off Plug is screwed in securely - then screw the coupling into the check-valve (non-return valve) located at the top of the pump. (If a Break-Off Plug is NOT being installed, screw either Boreline coupling into the check valve - in this case a 6mm (ΒΌ") hole should first be drilled in the non-return valve to allow draining before system removal and a vacuum relief valve should be fitted at the wellhead. Please check with the pump manufacturer before doing this as some do not condone drilling the check valve.)
  3. Push the Boreline riser over the coupling body making sure the riser end is flush with the shoulder at the threaded end of the coupling. Do not use any kind of lubricant.
  4. Fit the first ring with the three segments, over the rib closest to the threaded end of the coupling body. (For 8" hose this is the narrow ring.) Tighten all three screws evenly, ensuring the gaps between the segments are even. When fully tightened the gaps between these segments should be 1-2mm.
  5. Fit the second ring over the other rib positioning the gaps half way between the gaps of the first ring and tighten as above. (For 8" hose this is the wider ring - which will only fit over its rib one way round and will overlap the coupling body.)
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  1. The Boreline riser should be laid on the ground with the rib facing up. (All equipment for potable water boreholes must be kept clear of sources of bacterial contamination so the Boreline should be laid on a strip of new polythene sheeting - such as used for polytunnels or cloches - anchored to the ground.)
  2. Push a Boreline cable strap through the cable rib openings every metre (3 ft) along the entire length of the riser. Turn the riser over as you proceed to the next opening so that by the time all the cable straps have been inserted the rib of the riser is facing down. (A number of red cable straps are supplied - these should be used closest to the pump to serve as an indicator when the pump is being removed from the borehole.)
  3. Roll the power cable out next to the riser - allowing a little slack (5%).
  4. Fit a protective sleeve to act as a guard over the cable where it will pass over the coupling and secure with PVC tape. PVC reinforced hose or Polyethylene tube can be used.
  5. Connect the power cable to the pump motor. ( This work should be carried out by a qualified electrician only.)
  6. Fitting the Power Cable Starting from the end nearest the pump and allowing a little slack, lift the power cable onto the centre of the riser. Bring the first cable strap around the power cable, and secure using a Clove Hitch Knot (See below). Pull tight ensuring the power cable is hard against the Boreline riser. Buckle the strap. The power cable will be on the opposite side of the Boreline to the support rib.
  7. Repeat the procedure for fastening each subsequent cable strap - starting with the red straps - until the 'top' end of the hose is reached. (Remember to snake the power cable along the entire length of the riser allowing approximately 5% slack : 50mm or 2" between each strap.)
  8. Any additional high / low level probes etc. can be attached directly to the power cable using standard cable ties. (Allow the same slack in the cable as for the power cable itself.)
  9. Bundle any loose cable ends and temporarily tape them to the hose until the headworks are fitted when installation is almost complete.
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Connect the Boreline coupling to the pump discharge or check-valve / non-return valve and / or Break-Off Plug assembly and then the Boreline riser to the coupling. (Do not attach the second Boreline coupling and headworks to the hose at this stage.)

Unroll the Boreline riser along the ground. Lay the power cable next to the riser along the length.

Connect the power cable to the pump motor. (This should only be carried out by a qualified electrician.) Use the Boreline cable straps to tie the power cable to the riser at recommended intervals. (Remember to snake the power cable along the length allowing approximately 5% slack.) See 'Fitting the Power Cable' above.

Before installation inspect the pump, riser & cable and remove any loose mud & debris, washing as required with mains water. The pump and riser should be inspected during the installation process and any contamination removed before the assembly enters the borehole.

Some water suppliers may require the assembly to be disinfected during the installation operation - the appropriate procedures should be followed where this is specified. The maximum chlorine concentration should not exceed 5% to avoid damage to the hose.

Calculate the maximum height that the eye of the crane can achieve above the wellhead. Clamp the Boreline riser only (not the power cable) using a Boreline clamp approximately 1000mm (3 ft) less than the crane maximum height from the base of the pump.

Connect the clamp to the crane hook and lift the Boreline to the maximum height of the crane, guiding the pump as it is moved into the vertical position over the borehole.

Lower the pump down the borehole until the clamp rests on the wellhead.

Secure the second clamp at the maximum lifting height to the Boreline riser less 1000mm (3 ft), raise this clamp to take up the slack and release the first clamp off the well head. Once the top clamp has taken all the weight remove the lower clamp. Repeat this operation to continue lowering the pump down the borehole.

When ready to make the last lift, attach the second Boreline coupling to the headworks and the free end of the riser to the coupling. Release bundled cable(s), feed them through the surface plate and secure the loose ends neatly.

Raise the headworks until the weight of the whole assembly is taken, remove the clamp and lower the assembly onto the borehole. The Boreline and cable must not be dragged over the edge of the casing as this will cause damage.

Attachment of discharge pipework & final wiring up (by a qualified electrician) will complete the installation.

Where the water is to be used for a drinking water system, the pump discharge should be run to waste for half an hour on first start-up (or whenever the pump has not been used for a while) - to flush the components - before directing to the treatment system for further treatment and disinfection of water before entering the water supply.

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