Tag Archives: bore repair

Centrifugal Bore Pump Troubleshooting Guide

Centrifugal Bore Pump
Centrifugal Bore Pump

The following diagnostic guide applies when your centrifugal pump motor is running but water problems exist.

For any bore pump problems call us on 9246 0111 seven days a week for telephone advice or to book a service  Perth metro-wide. You can also visit our main website here.

(If pump is not starting at all then an electrical problem exists not covered in this guide. Call to book  a visit from one of our water bore / pump specialist electricians who have all the necessary tools for diagnosis or repair of pump electrical problems. More info covered here .)

Pump runs but no water?

  • Priming –  suction pipe not completely filled with water.
  • The check valve has failed
  • Discharge head too much – depth to water beyond pump range.
  • Suction lift too high.  Suction pipe may be too small or long, causing excessive friction loss.
  • The Impeller is blocked.
  • Suction pipe/screen/strainer completely blocked.
  • Pump motor running in reverse (check direction).
  • Air pocket in suction line.
  • Air leaks in suction line and/or shaft seal, gland packing.
  • Discharge line closed off, solenoid valve not opening or gate valve closed.

Poor flow?

  • Priming – casing and suction pipe not completely filled with liquid.
  • Discharge head higher than anticipated.  Check friction loss in piping.
  • Suction lift too high.  Suction pipe may be too small or long and causing excessive friction loss.
  • Impeller partially plugged.
  • Suction pipe/screen /strainer partially blocked.
  • Pump motor running in reverse (check direction).
  • Air pocket in suction line.
  • Air leaks in suction line and/or shaft seal, gland packing.
  • Foot valve too small.
  • Suction pipe not into the  water enough after draw-down.
  • Mechanical faults such as the Impeller damaged, gland-packing of shaft seal damaged or wear rings worn.

Water pumps OK then stops?

  • Leak in suction line.
  • Leakage of air into pump casing.
  • Air pocket in suction line.
  • Suction lift too high.
  • Insufficient groundwater.

Not Enough Pressure?

  • Speed to low.
  • Air in water.
  • Wrong impeller diameter.
  • Mechanical fault – Wear rings worn. Impeller damaged. Shaft seal or gland-packing damaged.
  • Wrong direction of rotation.

Water pumps OK then stops but pump still running

  • Leak in suction line.
  • Leakage of air into pump casing.
  • Air pocket in suction line.
  • Suction lift too high.

Pump is noisy.

  • Hydraulic noise – cavitation,  too much suction head.
  • Mechanical Faults including  – pump and drive unit out of alignment ,rotating elements binding, shaft bent, bearings worn.

Pump leaks .

  • Gland Packing worn/loose. Shaft seal damaged.
  • Packing incorrectly inserted or not properly run in.
  • Shaft scored.
  • Housing damaged.

Submersible Bore Tripping Mount Pleasant

James from Mount Pleasant phoned regarding his submersible pump that was tripping the circuit breaker.    (Call us anytime on 9246 0111 if you need help too)

The water bore was drilled in his driveway and it was very useful to know that the paver to show where the bore was located was a different color. As pictured the bore head was was covered by an old concrete lid pit.

Mt Pleasant submersible water bore needs repair
Head of submersible water bore under pavers in driveway

Our senior experienced bore electrician Dave reported the motor was about 8 years old. The 1.1 kw 2 wire subbie motor was dead short to earth and although the motor’s windings appeared to be intact the internal capacitor had ruptured. So we replaced it with a new 1.1 kw sunbmersible pump motor and replaced the start box and junction box.

Bore electrical junction box
We replaced the junction box too. This joins the cables coming up from the pump to the cables going to the house.

We have drilled and repaired many water bores in Mt Pleasant,  Applecross,  Bateman  Ardross and surrounds. We are very experienced with the conditions in the area. If your water bore or retic is in need of repair call us on 9246 0111 or check out our main website HERE

 

 

Water Bore Repair Marmion

One of our bore service team went to a job this morning in Marmion. The bore was installed at this Marmion garden in December 2014 and it is 20 metres deep.

The bore was turning on normally with the power meter spinning faster when the bore pump was turned on with all the normal sounds and the tell tale click but there was no water.

We thought it was going to be a blown poly rising main pipe down the submersible bore hole but it was in fact a split fitting in the bore box. It was probably caused by the surface pipe connections to the retic having being completed and rigid before the pump was turned on for the first time. The very first running of a submersible pump fills the rising poly main with water which is then held there every after by the pumps check valve. This weight most likely stretched the stainless steel draw wire slightly and put undue pressure on the fitting which subsequently split.

Split fitting causes no water
Split fitting in bore box

We replaced the fitting and the bore is up and running.

If you have a water bore in Perth that is not working call us on 9246 0111 or book a bore service HERE

Bore Automation Old Well

Bore automation Bull Creek
Manual gate valve feeding front station from bore

Today we are visiting a client in Bull Creek about automating his old well.

At the moment he turns on the old well manually from the DOL starter near the metre box. He then turns on two manual gate valves near the old well to send water to the front and back of his Bull Creek home.

We will send our specialist bore election to fully automate the system. He will install a new reticulation controller to interface with the bore. He will also run cables to the gate valves and we will replace with automatic 24 volt solenoid valves turned on and off by the reticulation controller.

We are expert at the automation of water bores. For more information check out our website HERE or call Troy on 9246 011

Bore Automation Perth

We are automating an old bore in the southern Perth suburb of Shoalwater.

As pictured it is an old style well with a tin lid.

The sprinkler system is currently manually operated with five inground gate valves. This is common with these older style Perth water bores.

We will replace manual valves with 24  V solenoid valves which will be wired into a new reticulation controller. Our electrician will do the interface to start the bore automatically via a 24 V relay.

We do this type of Perth bore automation quite regularly with single station bore automations from as low as $750.

If you are in Perth and we can help you with a bore automation check out our website HERE or call one of our team on 9246 0111

Get your Leederville garden ready for summer

Leederville is a bright and vibrant area to live in. It is time to start thinking about getting your garden ready for summer.

We have drilled and repaired many water bores and retic systems throughout Leederville our experience will save you money in bore and retic service or repair. If you are checking your water bore to make sure it is ready for summer and your pump is not starting, we can send our specialist bore electrician to work out the problem and fix it. Dave is an excellent electrician with many years of experience fixing water bores.

Don’t forget to also test your reticulation system. If there are any issues with your reticulation off a bore or mains water we can fix it. These issues can include faulty solenoid valves or even finding your solenoid valves. We find and fix broken solenoid wires and resolve sprinkler coverage issues.

Call us about any issues with your Leederville bore or reticulation systems leading into the summer season on 9246 0111 or check out our main website HERE

We service Perth Bores, pumps and retic in any suburb from Two Rocks to Secret Harbour. Our Perth bore pump and retic service teams are only a phone call away.

Pulling up a submersible water bore.

If your modern submersible water bore is not working call us on 9246 0111 and we can talk through over the phone what the problem may be.

Portable winch used to pull up submersible pumps
Portable winch used to pull up submersible pumps

In some circumstances a submersible pump and motor will need to be pulled up to the surface by one of our water bore repair teams with a winch designed for the task.

The torpedo like submersible water bore pump is usually suspended at the bottom of the borehole by a stainless steel cable used to retrieve the pump. Also coming to the surface from the pump will be a flexible poly pipe that delivers the water and an electrical cable that powers the motor.

Our service teams connect the stainless draw wire to one of our purpose built portable electric winches and simply winch the pump to the surface. Simultaneously though it is important that we also manually gently pull up the electrical cable to prevent jamming and damage to the heat shrink joint.

If your water bore needs fixing call us on 9246 0111 and we will assess what we think is the problem over the phone and send the correct member of our team to fix your water bore. If you submersible pump needs to be pulled to the surface call 9246 0111 or get some detailed information on your submersible pump HERE 

Ready to winch up a submersible pump.
Ready to winch up a submersible pump.

Sand in your bore?

If you have a water bore and have white sand coming from your sprinklers call us on 9246 0111.

You’re never meant to see white sand coming from a sprinkler. In the case of this customer they had an old style well.

Screen failed allowing in sand
Sand coming out of sprinkler

The screen had failed which allowed in sand. It is very white sand that comes from water bearing ground that is washed almost iridescent over the years. The options for this broken Perth water bore was to either redrill a spear into the existing well or drill a new submersible bore.

After assessment by our bore serviceman it was decide it was more economical to opt for a new modern submersible water bore. Our bore installation and service team at can help with any bore problem in Perth. Call us on 9246 0111 or you can book a bore service HERE .

Water bore start capacitor problem

We often get water bore repair calls where the problem turns out to be the start capacitor. Call on 9246 0111. 

Water bore start box and capacitor
Start capacitor and start box
Start capacitor in start box
Start capacitor in start box

In a single phase submersible bore pump the start capacitor is ordinarily in the 240 volt start box. Three phase submersible pumps do not have start capacitors. In some centrifugal pumps the capacitor can be mounted externally on the pump motor housing. It is surprising how often a faulty capacitor is missed as the cause of a bore pump problem particularly when tests are carried out by someone who is not specifically experienced in bore pump service work. Even trained general electricians can misdiagnose this simple problem.

Often a capacitor problem can spotted visually as it will commonly swell or rupture. A start capacitor should be perfectly cylindrical. Sometimes though a faulty capacitor can only be diagnosed by the serviceman actually testing it when disconnected. As the start box is mains powered it does need a licensed electrician or certified electrical worker to test and replace the start capacitor. Our specialist bore electrician Dave is expert at this. 

Burnt out start capacitor
Close up burnt bore start capacitor

One of our clients from Baldivis sent us these pics of inside his submersible water bore start box.

This is a single phase start box and is a particularly dramatic example of a blown start capacitor.

Burnt bore start capacitor Perth
Burnt bore start capacitor in start box

Our mobile bore service teams carry a variety of different size start capacitors and can quickly diagnose and fix this common bore problem. We repair water bores in all Perth suburbs, call us on 9246 0111 or book a service online