Category: Updates

Categories: Updates

How to use a pressure washer: A guide for beginners

Pressure washing is a great way to clean and restore all kinds of surfaces around the exterior of your home. Here’s what you need to know to get started

A pressure washer can help you quickly clean large areas of all kinds of hard outdoor surfaces. You can use a pressure washer to spray off a wooden deck, siding, a car or a concrete surface such as a patio, walkway or driveway. They’re great for when the old “brush and soapy water” routine would take forever. Pressure washing is also useful because it can get rid of some of those hard-to-deal-with soils like grease, tar, gum, wax or even rust.

In this guide I’m going to tell you about the basics of buying a pressure washer, what kinds of jobs a pressure washer is good for and how to apply a pressure washer to various surfaces. I’ll wrap up by talking you through a few examples of a pressure washer in action.

When do I need a pressure washer?

A pressure washer is useful for cleaning any exterior surface that has caked-on dirt, grease, plant residue or other material across a large surface area.

To prevent injury, avoid pressure-washing anything living, whether it’s people, animals or plants. If you’re pressure-washing near plant beds, use garbage bags or other plastic coverings to keep the spray from damaging your plants.

Since pressure washers are mainly used for larger or dirtier jobs, it also doesn’t make a ton of sense to use them on very small areas, unless it’s a stain that you just can’t get rid of. If it takes longer to pull the machine out and set it up than the amount of time you’ll be using it, consider cleaning by hand.

Pressure washers come in two varieties: gas and electric. The price can range from about $100 for a low-end consumer-grade model up to thousands for larger commercial units.

The specs associated with pressure washers are pounds per square inch and gallons per minute. Psi tells you the force of the spray. GPM tells you the volume of water passing through the spray wand.

If you want to save time and backache cleaning off your sidewalk, deck or patio, or maybe you’re looking for an easier way to wash the car, look for a pressure washer with specs under 2,000 psi and 2 GPM. You should be able to find one at your local home store for between $100 and $300.

For more cleaning power — maybe you have some tough stains on your driveway or your deck, or you want to clean the exterior of your house — look for a pressure washer in the range of 2,000 to 3,200 psi and 2 to 3.2 GPM. Most homeowners won’t need a pressure washer with higher specs.

Do I need protective gear to operate a pressure washer?

It’s important to remember that pressure washers are not toys. You will definitely want to wear protective gear and avoid spraying other living things, such as pets, plants or pesky neighbors. For comparison, a standard garden hose probably has a psi of about 60, fire hoses start around 100 psi, and a medium-duty pressure washer can have a maximum pressure of 2,800 psi. Make sure to put on eye protection when you use a pressure washer. Ear protection isn’t a bad idea either for any loud, gas-powered model.

How does a pressure washer work?

The trick to getting such high psi from a normal garden hose connected to your pressure washer is the pump. Each pressure washer, electric or gas, has a pump that pressurizes the water before sending it to the spray wand.

How do you hook up a pressure washer?

The pressure washer itself has one connection for a standard garden hose to bring water to the pump and another connection that connects the pump to a high-pressure hose that has the spray wand on the end of it. Most units have some type of siphon hose for detergents, and any electric pressure washer will have a power cord.

The spray wand of your washer should come with different interchangeable tips that allow you to customize angle of spray for each job. Changing the angle of the spray also changes how hard the water will hit the surface. The sharper the angle, the less direct pressure on whatever surface you intend to spray.

A spray of 0 degrees concentrates the water into one small powerful stream. As you increase the angle, the spray spreads out across a wider area, which decreases the power of the spray at any one point. The greater the angle of the spray tip, the lighter the touch on the surface you want to clean.

There is no exact guide for which tip is most appropriate for which job. The combination of spray angle and the psi rating of your washer will determine the end result. If you’re not sure about the hardiness of the surface you want to spray, start with the sharpest angle tip and work your way up.

Universal color coding should also help you decide which tip to use. Usually, the tips map to the following order, from most dispersed spray angle to the most direct: black (65 degrees), white (40 degrees), green (25 degrees), yellow (15 degrees), red (0 degrees). Still, it’s a good idea to check your manual to determine the best tip for the job for your specific pressure washer.


How long can you run a pressure washer?

Assuming you have correctly set up your pressure washer, there should be no real limit to the amount of time you can run an electric model. If your unit is gas-powered, the tank capacity will be the limiting factor for run time.

What’s the difference between a pressure washer and a power washer?

A pressure washer uses water at ground temperature. A power washer uses a heating element to heat the water before spraying it out. Because of the heat, power washers are more suited to removing stains containing living bacteria, like mold. Most residential washers are pressure washers and not power washers.

Can you damage concrete with a pressure washer?

Absolutely. The main contributor to unwanted surface damage with pressure washers is using the incorrect tip. If you’re unsure, or if you’re using a new pressure washer or washing a new surface for the first time, it’s always best to start with a wide spray tip and switch to a tip with a more direct angle as needed. The white 40-degree tip is a good place to start.

You can use almost any type of liquid soap or detergent with a pressure washer, although there are pressure washer-specific detergents for jobs of all types. Your pressure washer will have a siphon hose or basin of some type, which you fill with the desired soap. Make sure any detergent cutoff valves are on, and then you can run the pressure washer as you normally would.

How do you winterize a pressure washer?

For a gas pressure washer, add a fuel stabilizer following the instructions in your manual. Also, follow the manual for instructions on how to clear any detergent. Finally, run a pressure washer pump saver through your washer by connecting it to the hose inlet. The engine doesn’t need to run during this step, nor does the spray wand or high-pressure hose need to be connected. Once you see the white foam coming from the high-pressure hose connection, you’re done.

For an electric pressure washer, you can omit the fuel stabilizer step.

And there you have it. I breathed some new life into things around the house without too much trouble. Pressure washing can be a great home maintenance tool. Get the right machine and be safe!


Categories: Updates

Halsted Brothers Simon Mazorodze Branch Grand Opening

Visit our Tech Africa Stand at Halsted Brothers Simon Mazorodze Official Opening on the 28th March 2020 and stand a chance to win various prizes.

Tech Africa will be offering the below on the day
– Live demos
– Product Quizzes
– Technical Advice

Big Announcement
There will be a Tech Africa TGP50 Petrol Water Pump on the Deluxe Draw (3rd Prize draw) on offer

1 purchase = 1 entry, no value limit and 10% off all stock for 1 day only.

12:30pm live draw – BE THERE TO WIN


#DELUXEDRAW                                                                                                                                                                                                                                                                                                                                                                           Halsteds Promotion with Tech Africa


Categories: Updates

Solar Water Pumping: The Most Ecological and Economical Way To Pump Water

Solar water pumping is the name given to the pumps that, instead of being powered by electric current, use solar energy. Our country has areas that are suffering from serious problems of desertification, access to water is unequal and unfortunately, there are areas where it is scarce. On the other hand, there are also areas in which there is no electricity supply because they are rural zones that are not urbanized and where it is not possible to obtain energy from the grid.

Solar submersible pumps are ideal for use in many environments – after all, many of the most remote areas in this country get plenty of sunshine. Solar pumps are a popular choice for watering livestock, crop irrigation, industrial water supply, and even residential and swimming pool applications. So what are the benefits?

  • Solar panels can be reliable, even in regional and remote areas.

They make an ideal choice when grid power is irregular or unavailable. When properly serviced and maintained and with adequate water storage, solar pumps offer great reliability. Some systems even offer apps to help you remotely monitor performance and flow rate.

  • They have extremely low operating costs.

One of the major advantages of a solar pump is that its energy comes straight from the sun, lowering operating costs and its environmental footprint.

  • They’re easy to transport and relocate.

Need to move a large mob of stock, or change your pump location based on the seasons? Depending on your system and site, solar water pump systems can be shifted relatively easily.

  • Solar pumps are generally low-maintenance.

Upkeep is typically minimal compared to grid power or generators – an important factor when these pumps are often used hundreds of kilometres from service bases. If PV panels lose efficiency, they can be replaced separately to the whole system.

  • Productivity increases in times of need.

When it’s hot and sunny people tend to use more water, and livestock will hang closer to water troughs. A solar water pump moves more water in sunny weather and slows appropriately when it’s overcast or raining, with the option to store a backup supply if your storage tank is adequately sized.


The possibilities for solar pump systems

Solar panels can be designed in almost any configuration, including borehole or surface configurations, and with centrifugal or positive displacement pumps. Surface pumps work well for dams, tanks, creeks, and ponds as long as the pump can be located under 6 metres above the water level. Borehole or submersible pumps can perform very effectively with solar panels as long as the system is correctly planned.

In less sunny areas there may be a benefit in installing a passive (non-motorized) or active (motorized) tracker that will shift the PV panel to gain the most energy as the day progresses. Generators or batteries can also be integrated into the system as a backup for cooler days.

Of course, the reliability and performance of your solar pump depend on the quality of your pump service. To enquire about an onsite or in-house pump service for your solar pumps, contact the Tech Africa team on +263772156504

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Categories: Updates

Good Generator Maintenance

Good generator maintenance is essential for safe, economical, and trouble-free operation for your generator. It will also help with air pollution.

These following maintenance tips apply to normal operating conditions. If you operate your generator under unusual conditions, such as sustained high load or high-temperature operation, or use it in dusty conditions, speak to your local authorized generator dealer on a necessary maintenance schedule to suit.

Fuel Recommendations for Petrol Generators

  • Use regular unleaded fuel with an octane number of 89 or higher.
  • Never use stale or contaminated fuel, and avoid getting dirt or water in the fuel tank.
  • You can use regular unleaded fuel containing no more than 10% ethanol or 5% methanol by volume.

Engine damage or performance problems that result from using a fuel with percentages of ethanol or methanol greater than this are nor covered under warranty from manufactures.

Air Cleaner Service

  • Inspect the air filter, if the air filter is dirty or broken replace it, otherwise a quick clean of the air filter can mean you can re-use it again.

Spark Plug Service

  • To ensure proper engine operation, the spark plug must be properly gapped and free of deposits.
  • You should clean your spark plug every 100 hours and change it every 300 hours.

Note – A loose spark plug can overheat and damage the engine.

Muffler & Spark Arrestor Service

  • Check the muffler & spark arrester for an excess build-up of carbon.
  • Give both the spark arrestor and muffler a good clean to remove traces of carbon deposits.

Are they in good condition? If not, replace them.

Battery Service

If your model generator is an electric start, your generator’s engine charging system charges the battery while the engine is running. However, if the generator is only used periodically, the battery must be charged monthly to maintain the battery service life.