BOREHOLE PUMP INSTALLATION AND TESTING – 0723763173
A reliable borehole water supply depends on choosing the correct pump, installing it properly, testing its performance, and maintaining the complete water delivery system. Whether you are installing a new borehole pump, replacing an old submersible pump, upgrading a water supply system, or investigating poor water delivery, professional borehole pump installation and testing helps ensure that your equipment operates efficiently and reliably.
Pro-Logic Technologies Limited provides technical support for borehole pump installation, performance checks, electrical inspections, flow testing, pressure testing, control system checks, and troubleshooting. Our objective is to help property owners, farms, institutions, commercial premises, residential developments, and industrial facilities achieve dependable water delivery from their boreholes.
Correct borehole pump installation and testing is not simply a matter of lowering a pump into a borehole and switching on the electricity. The installation must account for borehole depth, static water level, pumping water level, expected yield, pump capacity, pipe diameter, delivery height, electrical supply, cable sizing, control equipment, and the destination of the water.
A pump that is too powerful for the borehole may lower the water level excessively and cause dry-running problems. A pump that is too small may fail to meet the property's water demand. Incorrect cable connections, poorly selected protection devices, leaking delivery pipes, and unsuitable control settings can also reduce performance or cause equipment failure.
For professional assistance with borehole pump installation and testing, contact Pro-Logic Technologies Limited on 0723763173.
WHY PROFESSIONAL BOREHOLE PUMP INSTALLATION MATTERS
Borehole pumps work under demanding conditions. A submersible pump operates below ground, often at considerable depth, where access is difficult. Its motor, hydraulic section, electrical cable, non-return valve, rising main, and control system must work together correctly.
A poorly installed pump may initially deliver water but develop problems after a short operating period. These can include low discharge, repeated electrical trips, overheating, excessive starting and stopping, water hammer, damaged cable insulation, leaking joints, or premature motor failure.
Professional borehole pump installation and testing helps identify installation problems before the system is placed into normal service.
Correct pump selection
Pump selection should be based on the required flow rate and total dynamic head, rather than borehole depth alone. The total dynamic head includes the vertical lift from the pumping water level, the required delivery pressure, and friction losses in the pipework and fittings.
For example, a borehole that is 100 metres deep does not automatically require a pump capable of delivering water through 100 metres of head. The pumping water level may be much higher than the bottom of the borehole, and the required operating head depends on the actual installation.
Likewise, a deep borehole does not automatically need the largest available pump. Its sustainable yield and the water level during pumping must be considered.
Protection of the pump and motor
A suitable installation includes correctly rated electrical protection and appropriate operating controls. Depending on the system, these may include overload protection, short-circuit protection, phase-failure protection for three-phase equipment, underload or dry-run protection, and surge protection.
The correct combination depends on the motor, supply arrangement, pump manufacturer's instructions, and local electrical requirements.
Reliable water delivery
The pump must be able to deliver the required volume of water at the pressure needed by the property's plumbing system. Testing confirms whether the installed equipment meets the intended duty and helps establish a baseline for future maintenance.
SITE ASSESSMENT BEFORE PUMP INSTALLATION
The first stage of borehole pump installation and testing is a technical assessment of the borehole and the intended water supply system.
Before recommending or installing a pump, the relevant site information should be collected and checked.
1. Borehole depth and construction
The borehole completion report, where available, should be reviewed to establish the total drilled depth, casing details, screen intervals, and recommended pump-setting depth. The borehole must also be checked for restrictions, obstructions, or other conditions that could affect safe installation.
The pump should not simply be placed at the bottom of the borehole. Its position must allow adequate clearance from the bottom and maintain the required submergence during pumping, while respecting the borehole design and manufacturer's installation requirements.
2. Static water level
The static water level is the depth from a defined measuring point to the water surface when the borehole has recovered and is not being pumped.
This measurement provides a starting point for determining the vertical lift required by the pump. It should be recorded together with the date, measuring point, and relevant borehole conditions.
3. Pumping water level
The pumping water level is measured while the borehole is producing water. It may be significantly deeper than the static water level because pumping causes drawdown.
The difference between the static and pumping water levels is important when determining the operating head and assessing whether the pump is withdrawing water faster than the borehole can sustainably supply it.
4. Borehole yield
The borehole's available yield must be assessed against the property's water demand. A pump should not be selected solely on the assumption that a large motor will provide more water.
If the borehole has a limited sustainable yield, installing a high-capacity pump can result in excessive drawdown, loss of submergence, sediment disturbance, or dry-running conditions.
5. Water delivery destination
The installation team should determine whether water will be delivered to an elevated storage tank, a ground-level tank, a pressure vessel, an irrigation system, livestock facilities, or a commercial process.
Each arrangement has different pressure and control requirements. A tank system may use level switches, while a pressurised supply may require a pressure switch, pressure transducer, or variable-frequency drive configured for the pump and motor.
CHOOSING THE RIGHT BOREHOLE PUMP
Correct equipment selection is one of the most important stages of borehole pump installation and testing. The pump must match the hydraulic conditions, water demand, electrical supply, and borehole limitations.
Submersible borehole pumps
A submersible pump is installed below the water level and pushes water through the rising main to the delivery point. These pumps are widely used for domestic, agricultural, institutional, commercial, and industrial water supply systems.
Important selection factors include the required flow rate, total dynamic head, pump efficiency, motor rating, installation diameter, water quality, and compatibility with the borehole casing.
Pump flow rate
Flow rate is the volume of water delivered over a given period. It may be expressed in litres per minute, litres per hour, or cubic metres per hour.
The required flow rate should reflect the actual demand. A residence may have a different demand profile from a hotel, apartment block, school, farm, hospital, or manufacturing facility.
The pump's rated flow should be evaluated against its performance curve at the required head. A pump's maximum advertised flow is not necessarily the flow it will deliver at the installed operating head.
Total dynamic head
Total dynamic head represents the energy per unit weight that the pump must provide to move water through the system. In practical terms, it includes:
- The vertical lift from the pumping water level to the discharge point.
- The pressure required at the destination.
- Friction losses in the rising main, valves, elbows, filters, and other fittings.
- Additional losses caused by the design and operating conditions of the system.
For example, delivering water to a tank on a tall building may require a different pump duty from delivering the same volume into a tank close to ground level.
Pipe diameter
Pipe diameter affects water velocity and friction losses. A pipe that is too small for the required flow may increase head losses and energy consumption. An unsuitable pipe can also contribute to excessive pressure losses and reduced delivery.
The selected rising main must withstand the operating pressure, suit the installation environment, and be compatible with the pump outlet and fittings.
Electrical supply
The pump motor must be compatible with the available supply voltage, frequency, and phase arrangement. The installation should include suitable cable sizing, motor protection, earthing, isolation, and control equipment.
For long borehole installations, cable voltage drop is an important consideration. The cable must be sized according to the motor current, cable length, installation conditions, allowable voltage drop, and applicable electrical requirements.
PREPARING FOR BOREHOLE PUMP INSTALLATION
Before installation begins, the equipment and work area should be prepared to reduce the risk of damage and installation errors.
The pump, motor, rising main, electrical cable, cable guards, approved joints, non-return valve where required, support arrangements, and control equipment should be checked for compatibility.
The pump model and motor nameplate information should be recorded. This information is useful for confirming electrical requirements, selecting protection devices, and planning future maintenance.
Inspecting the pump and motor
Before lowering the pump, inspect the pump body, outlet, motor housing, cable entry, cable insulation, and other accessible components for damage. The equipment should be handled according to the manufacturer's instructions.
If the pump requires a specific installation orientation, cooling arrangement, or minimum flow past the motor, these requirements must be followed.
Electrical checks should be conducted using appropriate instruments and safe procedures by a qualified technician. Insulation resistance testing, where applicable, must be carried out in accordance with the manufacturer's guidance, particularly where electronic components or integrated controls could be damaged by inappropriate test voltages.
Checking the rising main
The rising main carries water from the pump to the surface. It must be suitable for the expected pressure, flow rate, water conditions, and installation depth.
Pipe joints must be assembled correctly, and the complete line should be inspected for visible defects before installation. The design should account for the weight of the water-filled pipe and the mechanical load imposed during lowering and operation.
Preparing the electrical cable
The pump cable must have the correct conductor size, insulation rating, and environmental suitability. Where a cable joint is necessary, the joint must be appropriate for continuous submersion and the applicable electrical requirements.
Improper cable joints can allow water ingress, leading to insulation failure, leakage current, motor damage, or electrical hazards.
THE BOREHOLE PUMP INSTALLATION PROCESS
The installation procedure depends on the borehole design, pump type, installation depth, and equipment manufacturer's instructions. The following stages describe the general process for a conventional submersible borehole pump.
Step 1: Confirm the installation plan
Confirm the pump-setting depth, rising-main arrangement, cable route, electrical protection, discharge arrangement, and control system before lowering the equipment.
The installation plan should ensure that the pump remains adequately submerged under expected operating conditions. It should also account for the position of the borehole screens, the possibility of sediment, and any manufacturer's minimum-clearance requirements.
Step 2: Assemble the pump and motor
Where the pump and motor are supplied separately, assembly must follow the manufacturer's instructions. Couplings, fasteners, seals, and electrical connections must be checked for compatibility and correct installation.
Do not improvise connections or use components that are not rated for the equipment's operating conditions.
Step 3: Connect the rising main
Connect the rising main to the pump outlet using suitable fittings and the specified assembly method. Connections should be secure and suitable for the expected operating pressure.
A non-return valve may be required to prevent water from flowing back through the pump when it stops. The correct arrangement depends on the pump design and system requirements.
Step 4: Secure the electrical cable
The electrical cable should be secured along the rising main using appropriate cable guards or fastening arrangements. It must not be allowed to hang loosely, become trapped between the pipe and borehole casing, or carry mechanical loads for which it was not designed.
Cable protection is especially important where the rising main is lowered through a narrow casing.
Step 5: Lower the pump carefully
The pump and rising main should be lowered using suitable lifting equipment and safe handling procedures. The assembly must not be suspended by the electrical cable.
The installation team should monitor the pipe, cable, and connections throughout the lowering process. Sudden impacts, excessive bending, and uncontrolled movement can damage equipment or create hazards.
Step 6: Secure the borehole head
At the surface, the pump installation should be supported and sealed using suitable borehole-head equipment. The arrangement should protect the borehole against contamination and prevent unauthorised access.
The discharge pipe, electrical cable entry, and any measuring or sampling provisions should be arranged neatly and securely. The borehole head should be designed for the site's conditions and applicable requirements.
Step 7: Complete the electrical connections
The pump should be connected through the appropriate isolation, protection, and control equipment. The motor nameplate, wiring diagram, supply arrangement, and manufacturer's requirements must guide the connection process.
For three-phase motors, phase sequence and phase condition may affect operation. For single-phase motors, the starting arrangement and any required capacitor or control box must match the motor design.
All electrical work should be undertaken by a qualified person with the equipment safely isolated during installation.
BOREHOLE PUMP TESTING AFTER INSTALLATION
Installation alone does not prove that the system is operating correctly. Borehole pump installation and testing should include checks of the pump, motor, controls, water flow, delivery pressure, and borehole response.
Testing should be planned and recorded rather than relying on a brief switch-on test.
Initial inspection
Before starting the pump, inspect the installation for loose connections, visible leaks, damaged cables, incorrect valve positions, and unsecured equipment.
Confirm that the discharge route is ready to receive water safely. Where sediment or debris may be present, the discharge should be directed to an appropriate location without causing flooding, erosion, or contamination.
Electrical checks
The technician should confirm that the electrical supply and protection equipment are suitable for the installed motor. Where appropriate, record supply voltage, running current, phase balance, and other electrical readings under the conditions specified by the manufacturer.
Readings should be compared with the motor nameplate and expected operating conditions. A single current reading cannot independently establish that a pump is healthy, because current depends on hydraulic load, supply conditions, motor design, and the type of fault.
Initial operation
Start the pump according to the approved procedure and observe its operation. Look for abnormal noise, vibration, unusual pressure changes, electrical trips, leakage, and signs of unstable water delivery.
If the pump runs without producing water, stop and investigate rather than allowing it to continue running dry or under an unsafe operating condition.
Flow-rate testing
Flow testing measures how much water the pump delivers over a known period. The result can be recorded in litres per minute, litres per hour, or cubic metres per hour.
For example, if a system delivers 600 litres in 10 minutes, the measured flow rate is 60 litres per minute under those particular test conditions.
The result should be interpreted alongside the pumping water level, delivery head, pressure, and pump performance curve. Flow measured at one operating point does not prove that the pump will maintain the same output under every condition.
Pressure testing
Pressure testing confirms whether the delivery system achieves the required pressure at the test point. A suitable pressure gauge should be installed at an appropriate location.
Pressure readings must be interpreted in relation to the system layout, flow rate, elevation, valve positions, and pressure losses. A high pressure reading at low or zero flow does not necessarily indicate that the pump can deliver the required volume of water.
Water-level monitoring
During a suitable pumping test, record the water level before pumping, during pumping, and after the pump stops. This helps assess drawdown and recovery.
If the water level falls excessively, the pump may be withdrawing water faster than the borehole can sustainably provide. The appropriate response may involve reducing the pumping rate, adjusting the control arrangement, reviewing pump selection, or conducting a more detailed borehole assessment.
Extended operational testing
Where appropriate, the system should be operated for a suitable period to evaluate stability. The duration and procedure should reflect the borehole, pump, water demand, and purpose of the test.
Record flow, pressure, water level, and electrical readings at suitable intervals. Any signs of unstable performance, excessive drawdown, overheating, or repeated trips should be investigated before the installation is accepted for normal operation.
TESTING THE BOREHOLE PUMP CONTROL SYSTEM
A reliable pump installation requires suitable control equipment. The control system should protect the pump and coordinate its operation with the water storage or distribution arrangement.
Water-level controls
Where water is pumped into a storage tank, level controls can start the pump when the tank needs water and stop it when the tank reaches the designated level.
The system should be configured to prevent repeated rapid switching and should include suitable protection against low borehole water levels where required.
Pressure controls
A pressurised water system may use a pressure switch, pressure transducer, or variable-frequency drive. The correct arrangement depends on the pump, motor, pressure requirements, and system design.
Pressure controls must be set within the ratings of the pipework, valves, pump, and storage equipment.
Dry-run protection
Dry-running occurs when the pump operates without sufficient water for safe operation. Depending on the pump design, this can cause overheating, loss of lubrication or cooling, and premature failure.
Dry-run protection may use water-level sensors, underload detection, specialised pump controllers, or other suitable methods. The choice must be compatible with the pump and the conditions at the borehole.
Overload and phase protection
Overload protection helps disconnect the motor when current or operating conditions exceed the appropriate limits. Three-phase systems may also require phase-loss, phase-imbalance, and phase-sequence protection.
The devices must be selected and configured according to the motor specifications and applicable electrical standards.
Functional testing
During commissioning, the technician should verify that the controls respond correctly to their intended inputs. This may include checking tank level controls, pressure settings, protective shutdowns, and restart behaviour in accordance with the equipment manufacturer's instructions.
Protection functions should be tested safely and without deliberately exposing the pump to damaging conditions.
COMMON PROBLEMS DISCOVERED DURING PUMP INSTALLATION AND TESTING
Testing often identifies problems that may otherwise remain unnoticed until the pump fails or the water supply becomes unreliable.
Pump runs but produces no water
Possible causes include an incorrect pump rotation direction on a three-phase system, a blocked or damaged hydraulic section, a disconnected or leaking rising main, an unsuitable pump setting, or a water level that has fallen below the required operating range.
The technician should also confirm that the pump is correctly supplied with power and that the installed equipment matches the borehole conditions.
Low water flow
Low flow may result from an unsuitable pump duty, excessive head losses, a partly closed valve, a blocked pipe, worn pump components, or excessive drawdown.
The correct diagnosis requires comparing measured flow and water levels with the expected pump performance. Replacing the pump without identifying the cause may not solve the problem.
Low delivery pressure
Low pressure can be caused by insufficient pump head, leakage, an incorrect pressure-control setting, pipe restrictions, or high demand elsewhere in the system.
Pressure should be measured at appropriate points so that the technician can distinguish a pump problem from a distribution-system problem.
Frequent electrical trips
Repeated trips may indicate overload, a short circuit, damaged cable insulation, moisture ingress, an incorrect protection setting, supply problems, or a failing motor.
The system should be isolated and inspected by a qualified technician. Repeatedly resetting a tripping breaker without identifying the fault can expose equipment and people to serious hazards.
Pump starts and stops too frequently
Rapid cycling may result from unsuitable pressure settings, an undersized pressure vessel, leaking plumbing, a faulty level control, or a poorly configured automation system.
The solution depends on the type of control system and the operating conditions. Simply increasing a pressure setting without checking the pump and pipework can create additional problems.
Water contains sand or sediment
Sediment may indicate a borehole-development issue, unsuitable pump placement, excessive pumping rate, deteriorating borehole conditions, or changes in the water-bearing formation.
The pump should not be operated at an excessive rate in an attempt to clear the water without proper assessment. Persistent sediment may damage the pump and other system components.
BOREHOLE PUMP INSTALLATION FOR HOMES AND RESIDENTIAL DEVELOPMENTS
Domestic borehole systems need to provide dependable water for bathing, cooking, cleaning, laundry, toilet flushing, and other household uses.
A properly designed domestic installation should account for peak demand, storage capacity, delivery height, plumbing layout, and the sustainable yield of the borehole.
For a single home, a tank-based arrangement may provide a practical buffer between pumping and daily consumption. For a multi-storey building or residential development, the design may need additional pressure management, larger storage capacity, and more detailed control arrangements.
Borehole pump installation and testing for residential properties should verify that the pump fills the intended tank or supplies the pressure system correctly, without excessive drawdown or frequent electrical trips.
Where several homes share a borehole, the water allocation, pump schedule, storage arrangement, and demand profile should be considered together. A system that works for one household may not be adequate for an apartment block or estate.
BOREHOLE PUMP INSTALLATION FOR FARMS AND IRRIGATION
Agricultural water systems often have demand patterns that differ from residential installations. Irrigation may require a relatively high flow rate for specific periods, while livestock watering may require consistent supply throughout the day.
The pump should be selected according to the irrigation method, operating pressure, pipe network, elevation, and available borehole yield.
For drip irrigation, the system may require filtration and pressure regulation. For sprinkler irrigation, the pump must meet the required operating pressure and flow. The filter, valves, and distribution network should be included in the total head calculation.
A borehole that produces sufficient water for household use may not support continuous high-volume irrigation. A suitable storage tank can help balance intermittent borehole production against short periods of high demand.
Testing should confirm the actual flow rate and operating pressure under representative conditions. This helps determine whether the installed system meets the farm's requirements and whether the borehole needs a controlled pumping schedule.
BOREHOLE PUMP INSTALLATION FOR SCHOOLS, HOTELS AND INSTITUTIONS
Schools, hotels, hospitals, offices, and other institutions may experience large changes in water demand throughout the day. The pump installation must account for these demand patterns and the consequences of a water-supply interruption.
Storage capacity, backup arrangements, control reliability, and maintainability should be considered during planning.
Where several pumps are installed, the control system may alternate operation or provide standby capacity, depending on the design. Each pump should be tested individually, and the overall system should be checked under appropriate operating conditions.
A commissioning record can help the facility manager understand normal operating pressure, expected filling times, motor current, and other baseline readings. These records make it easier to identify changes during later maintenance.
MAINTENANCE AFTER INSTALLATION AND TESTING
Correct installation is only the beginning of reliable pump operation. Regular maintenance helps identify developing faults and supports longer equipment life.
Maintenance frequency should be based on operating hours, water quality, pump design, borehole conditions, manufacturer's recommendations, and the criticality of the water supply.
Useful maintenance activities include:
- Inspecting the borehole head, delivery pipework, valves, and visible joints.
- Checking electrical connections and protective devices using safe procedures.
- Recording running current, supply voltage, pressure, and flow where appropriate.
- Monitoring changes in pumping water level and recovery.
- Checking tank level controls and pressure-control operation.
- Investigating unusual noise, vibration, sediment, or frequent cycling.
- Reviewing the pump's operating history and comparing new readings with commissioning records.
Maintenance should not involve lowering unqualified personnel into a borehole or working on live electrical equipment. Pump removal, electrical testing, and work involving lifting equipment should be undertaken by competent personnel using suitable safety procedures.
WHY CHOOSE PRO-LOGIC TECHNOLOGIES LIMITED?
Choosing a service provider for borehole pump installation and testing involves more than fitting a pump. The work should consider the complete water delivery system, from the borehole and pump to the controls, electrical supply, storage, and final delivery point.
Pro-Logic Technologies Limited supports customers who need technical assistance with borehole pump installation, system checks, testing, troubleshooting, and maintenance planning.
Our approach focuses on understanding the reported problem, checking the available equipment information, evaluating the system's operating conditions, and identifying practical next steps.
For a new installation, useful information includes the borehole depth, borehole report, static water level, expected yield, required water demand, delivery height, and available electrical supply. For an existing installation, details about the pump model, motor rating, symptoms, flow rate, pressure, and control equipment can help guide the assessment.
To discuss borehole pump installation and testing, contact Pro-Logic Technologies Limited on 0723763173 or visit https://prologictecnologies.co.ke.
FREQUENTLY ASKED QUESTIONS ABOUT BOREHOLE PUMP INSTALLATION AND TESTING
1. How do I know which borehole pump is suitable?
The correct pump depends on the required flow rate, total dynamic head, borehole yield, pumping water level, pipework, and electrical supply. Pump selection should be based on the manufacturer's performance curve and the actual installation requirements.
2. Does a deeper borehole always require a bigger pump?
No. Borehole depth alone does not determine pump size. The pumping water level, required delivery head, flow rate, and pipe losses must all be considered.
3. Why should a borehole pump be tested after installation?
Testing helps confirm that the pump delivers the required water volume and pressure, that the electrical system operates correctly, and that the borehole water level responds acceptably during pumping.
4. How is borehole pump flow rate measured?
Flow rate is measured by determining the volume of water delivered over a known period using a suitable flow meter or other appropriate measurement method. The result should be recorded alongside the operating conditions.
5. What causes a borehole pump to run without delivering water?
Possible causes include a low water level, blocked pump, leaking rising main, damaged hydraulic components, or an electrical or installation fault. The cause should be investigated before continued operation.
6. Why does my borehole pump trip the breaker?
Possible causes include motor overload, damaged wiring, cable insulation failure, supply problems, moisture ingress, or incorrect protection settings. A qualified technician should isolate and diagnose the system safely.
7. Can a borehole pump be too powerful?
Yes. A pump that withdraws water faster than the borehole can sustainably provide may cause excessive drawdown, unstable operation, or dry-running conditions. Pump capacity must be matched to the borehole yield.
8. How often should a borehole pump be tested?
The appropriate schedule depends on operating conditions, water quality, equipment recommendations, and the importance of the water supply. Testing should also be considered when flow or pressure changes, the pump begins tripping, or repairs are completed.
9. What information should I provide when requesting pump installation?
Provide the borehole depth, available borehole report, expected water demand, pumping or static water level if known, delivery height, intended storage arrangement, and available electrical supply. Existing pump details are also useful when replacing equipment.
10. Can testing identify whether the fault is in the pump or the borehole?
Testing can help distinguish pump, electrical, pipework, and borehole-related problems. Flow measurements, water-level monitoring, pressure checks, and electrical readings provide evidence for diagnosis, although some cases require additional investigation.
BOOK BOREHOLE PUMP INSTALLATION AND TESTING
A dependable borehole water system begins with correct pump selection and continues with careful installation, electrical protection, functional testing, and ongoing monitoring. Skipping these steps can lead to low flow, unstable pressure, avoidable breakdowns, and unnecessary repair costs.
Professional borehole pump installation and testing helps establish whether the pump, motor, controls, pipework, and borehole are working together as intended.
For assistance with a new borehole pump, replacement installation, performance testing, or troubleshooting, contact Pro-Logic Technologies Limited.
Call 0723763173 for service enquiries.
Website: https://prologictecnologies.co.ke
Pro-Logic Technologies Limited — Borehole Pump Installation, Testing, Troubleshooting and Maintenance.