BOREHOLE PUMP TESTING AND COMMISSIONING – 0723763173
Professional Borehole Pump Testing Services
A newly installed or repaired borehole pump should be tested before it is relied upon for daily water supply. Testing helps establish whether the pump is operating correctly, delivering the expected water volume, maintaining suitable pressure, and working within the borehole's operating limits.
Pro-Logic Technologies Limited provides technical support for borehole pump testing, commissioning checks, flow-rate measurement, pressure assessment, electrical inspections, and troubleshooting. These services help residential property owners, farms, schools, commercial buildings, and industrial facilities assess their water supply systems.
Borehole pump testing involves more than switching on the motor and confirming that water comes out. A complete assessment may require measuring flow, recording delivery pressure, monitoring the pumping water level, checking electrical readings, and verifying that the control system responds correctly.
These checks can reveal problems such as an incorrectly selected pump, a restricted delivery pipe, excessive drawdown, unstable electrical supply, or a defective control device.
For borehole pump testing and commissioning, contact Pro-Logic Technologies Limited on 0723763173 or visit https://prologictecnologies.co.ke.
WHAT IS BOREHOLE PUMP COMMISSIONING?
Commissioning is the process of checking and documenting an installation before it enters normal service. It helps confirm that the equipment has been installed correctly and that the complete system operates according to its intended design.
A borehole pump commissioning process may include reviewing the installation, checking electrical connections, verifying protective devices, measuring water flow and pressure, testing automatic controls, and recording the initial operating conditions.
The exact procedure depends on the pump model, borehole conditions, electrical arrangement, water demand, and manufacturer's instructions.
Why commissioning is important
Commissioning helps identify installation problems before they lead to an unexpected interruption.
For example, an unsuitable control setting may cause repeated starting and stopping. A restricted pipe may prevent the pump from delivering its expected output. An incorrect pump duty may result in insufficient pressure or excessive drawdown.
Identifying these problems during commissioning provides an opportunity to correct them before the water supply becomes critical.
CHECKING THE BOREHOLE BEFORE TESTING
The condition of the borehole affects pump performance. Before conducting a test, review the available borehole records and confirm the installation details.
Borehole depth and pump-setting depth
Record the total borehole depth and the pump-setting depth where this information is available. The pump must be positioned according to the borehole design and manufacturer's requirements.
It should not simply be lowered to the bottom. Adequate clearance and submergence must be maintained, taking account of the borehole screens and the expected pumping water level.
Static water level
The static water level is the depth to the water surface when the borehole has recovered and is not being pumped.
Recording this level provides a reference for assessing the water-level changes that occur during pumping.
Pumping water level
The pumping water level is measured while the pump is operating. The difference between the static and pumping levels is known as drawdown.
Monitoring drawdown helps establish how the borehole responds to the pumping rate. A substantial or continuing decline may require the pumping rate and borehole conditions to be reviewed.
Available borehole yield
The borehole's sustainable yield should be considered when assessing pump performance. A pump that can deliver a high flow under certain conditions may withdraw water faster than the borehole can sustainably supply it.
Pump flow rate and sustainable borehole yield are different measurements. A suitable pumping test may be needed to assess the borehole's response over time.
BOREHOLE PUMP FLOW-RATE TESTING
Flow-rate testing measures the volume of water delivered over a known period.
The result helps establish whether the installed pump is meeting the intended water demand and whether its performance has changed.
How flow is measured
A suitable flow meter may be installed in the delivery pipe. Alternatively, an appropriate volume-measurement method may be used where practical and safe.
For example, if a system delivers 1,500 litres in 30 minutes, its measured flow rate is 50 litres per minute under those test conditions.
The result should be recorded together with the test duration, delivery pressure, pumping water level where available, and relevant valve settings.
Interpreting the result
The measured flow should be compared with the expected pump performance at the actual operating head.
If the flow is lower than expected, possible causes include pump wear, pipe restrictions, leakage, an unsuitable pump selection, or changes in the borehole water level.
A low reading does not automatically mean that the pump is damaged. Additional checks may be needed to determine the cause.
BOREHOLE PUMP PRESSURE TESTING
Pressure testing establishes the pressure available at a selected point in the water delivery system.
The result should be considered alongside the flow rate and the installation layout. Pressure can change because of elevation, friction losses, valve positions, demand, and the pump's operating point.
Static pressure
Static pressure is measured when there is no flow at the measurement point under the relevant system conditions.
This reading can help assess the system's pressure behaviour, but it does not prove that the pump can supply the required flow during normal use.
Operating pressure
Operating pressure is measured while water is flowing. It provides information about the system under load.
For example, a pump may show acceptable pressure when few outlets are being used but struggle when several outlets operate simultaneously.
Identifying pressure loss
Where appropriate, measurements at different points can help identify pressure losses across pipework, filters, valves, or other components.
The results must be interpreted in relation to elevation and flow conditions. The technician should not increase pressure settings without considering the ratings of the pump, pipes, valves, and connected equipment.
ELECTRICAL CHECKS DURING COMMISSIONING
The electrical system must be suitable for the installed pump motor.
Checks may include confirming the supply voltage, reviewing the motor nameplate, assessing running current, inspecting cable connections, and verifying the operation of protective devices.
Supply voltage
The supply should be checked against the motor's rated requirements. Unsuitable voltage conditions can affect motor performance and reliability.
Running current
Where appropriate, motor current should be measured during operation and compared with the motor specifications and expected operating conditions.
An abnormal reading may indicate an electrical fault, unsuitable loading, supply problems, or another operating issue. Current readings should not be used in isolation to diagnose the fault.
Cable and connections
The cable must be suitable for the installation depth, current, environmental conditions, and allowable voltage drop.
Cable joints and terminations should be inspected and tested using appropriate procedures. Submerged connections must be designed for the actual installation conditions.
Motor protection
The installation should include appropriate protection against electrical faults and operating conditions that could damage the motor.
Depending on the system, this may include overload protection, short-circuit protection, phase protection, surge protection, and dry-run protection.
Electrical work and testing should be carried out by qualified personnel using safe isolation procedures.
TESTING THE BOREHOLE PUMP CONTROL SYSTEM
Automatic controls regulate pump operation and help protect the equipment.
Tank-level controls
A pump supplying a storage tank may use level switches or sensors to start and stop the pump at designated water levels.
Commissioning should verify that the controls respond correctly and that the arrangement avoids unnecessary rapid cycling.
Pressure switches and transducers
A pressurised system may use a pressure switch, pressure transducer, or variable-frequency drive.
The settings should match the intended system requirements and remain within the ratings of the equipment. Incorrect settings can lead to unstable operation or unsuitable pressure.
Dry-run protection
Dry-run protection helps prevent the pump from operating without sufficient water. The appropriate protection method depends on the pump design and installation conditions.
Where such protection is installed, its function should be verified using the manufacturer's approved procedure rather than deliberately exposing the pump to damaging conditions.
Overload and phase protection
The technician should verify the relevant protective devices and confirm that their settings are compatible with the motor and supply arrangement.
Three-phase installations may require checks for phase loss, phase imbalance, and phase sequence.
TESTING AFTER PUMP INSTALLATION
A new installation should be checked systematically before normal operation begins.
First, inspect the pump installation, visible pipework, valves, cable entry, and control panel. Confirm that the discharge route is ready and that water can be directed safely.
Next, start the system according to the approved procedure and observe its initial operation. Investigate abnormal noise, vibration, leakage, unstable pressure, or repeated electrical trips.
Measure the flow rate and pressure under suitable operating conditions. Where required, monitor the pumping water level and record relevant electrical readings.
Finally, verify that the automatic controls and protective functions operate as intended. Record the results so they can be used as a reference during future maintenance.
TESTING AFTER BOREHOLE PUMP REPAIR
A repaired pump should be tested to establish whether the work has restored the expected performance.
The test procedure depends on the repair. Replacing a pressure switch may require different checks from repairing a motor or replacing the pump.
Suitable checks may include confirming normal starting and stopping, measuring flow, checking pressure, recording electrical readings, and inspecting accessible pipework for leakage.
If the system still performs poorly, further investigation may be necessary. The remaining problem could involve the borehole, rising main, control system, or the pump's suitability for the operating conditions.
COMMON FAULTS DISCOVERED DURING TESTING
Low flow rate
Possible causes include a restricted pipe, worn pump components, leakage, excessive drawdown, or an unsuitable pump operating point.
Low pressure
Possible causes include inadequate pump head, pressure-control problems, high demand, leakage, or excessive friction losses.
Pump trips during operation
Possible causes include overload, damaged cable insulation, supply problems, motor faults, or unsuitable protection settings.
Unstable pump operation
Repeated starting and stopping may indicate a control-system fault, leakage, unsuitable pressure settings, or a problem with the storage arrangement.
Excessive drawdown
A substantial decline in the pumping water level may indicate that the pumping rate needs to be reviewed against the borehole's sustainable capacity.
Sediment in the water
Persistent sediment may require investigation of the borehole, pump position, pumping rate, or water-bearing formation.
In each case, the correct response depends on test results rather than assumptions based on a single symptom.
BOREHOLE PUMP TESTING FOR HOMES
Domestic borehole systems may supply a storage tank, household plumbing, or a pressurised water system.
Testing can establish whether the pump provides enough water for normal household use and whether the system responds correctly to changing demand.
Where a tank is installed, the assessment should include its level controls and filling arrangement. If the home uses a pressure system, the required pressure at the outlets should be considered.
The pump should be evaluated against the actual water demand and the borehole's available yield.
BOREHOLE PUMP TESTING FOR FARMS
Agricultural installations may require water for irrigation, livestock, washing, and other farm operations.
Testing should reflect the intended application. An irrigation system may require a specific combination of flow and pressure, while a livestock system may prioritise reliable filling of storage tanks.
The borehole's sustainable yield must be considered when selecting the operating rate. If demand exceeds the borehole's capacity, a suitable storage arrangement and controlled pumping schedule may help balance water production and consumption.
BOREHOLE PUMP TESTING FOR COMMERCIAL BUILDINGS
Commercial buildings, schools, hotels, and institutions may have significant variations in water demand throughout the day.
Commissioning and periodic testing can help verify that the system delivers the required water volume and pressure under representative operating conditions.
Where several pumps or pressure zones are installed, each relevant operating arrangement may require separate checks. Standby equipment should also be tested according to the system design.
WHY COMMISSIONING RECORDS MATTER
Commissioning records provide a baseline for future troubleshooting and maintenance.
A useful record may include the pump and motor details, installation depth, measured flow rate, delivery pressure, water levels where measured, electrical readings, control settings, and observations made during testing.
When a later inspection shows a change in performance, the technician can compare the new readings with the original results.
Consistent records help distinguish a new fault from a condition that has existed since installation.
WHY CHOOSE PRO-LOGIC TECHNOLOGIES LIMITED?
Pro-Logic Technologies Limited provides technical support for borehole pump testing, commissioning, flow measurement, pressure checks, electrical inspections, and troubleshooting.
The assessment is guided by the reported symptoms, available installation information, and the measurements appropriate to the system.
The aim is to establish whether the pump and supporting equipment are operating as intended and to identify any issues that require correction.
For borehole pump testing and commissioning, contact Pro-Logic Technologies Limited on 0723763173.
Website: https://prologictecnologies.co.ke
FREQUENTLY ASKED QUESTIONS
What does borehole pump commissioning involve?
Commissioning involves checking the installation, electrical supply, controls, flow, pressure, and other relevant operating conditions before the system is accepted for normal use.
Why measure flow and pressure together?
Flow measures the volume of water delivered, while pressure indicates the pressure available at a particular point. Together, these measurements provide a clearer picture of pump performance.
Can testing show whether the borehole is producing enough water?
Testing can help assess the borehole's response, but sustainable yield may require a properly planned pumping test and interpretation of drawdown and recovery data.
Should a pump be tested after replacement?
Yes. Appropriate commissioning checks help confirm that the replacement is suitable for the installation and that the system operates correctly.
What should be recorded during testing?
Record the test date, pump details, flow rate, pressure, relevant water levels, electrical readings, operating conditions, and any faults observed.
How do I arrange borehole pump testing?
Contact Pro-Logic Technologies Limited on 0723763173 and provide the pump details, borehole information, reported symptoms, and the type of water delivery system.
BOOK BOREHOLE PUMP TESTING AND COMMISSIONING
Proper testing helps establish whether a borehole pump installation is operating as intended. Flow measurements, pressure checks, electrical inspections, and control-system testing can identify problems that might otherwise interrupt the water supply.
For borehole pump testing, commissioning, and troubleshooting, contact Pro-Logic Technologies Limited on 0723763173.
Visit https://prologictecnologies.co.ke for more information.
Pro-Logic Technologies Limited — Borehole Pump Testing, Commissioning and Performance Checks.