Professional AC repairers know a lot about the main parts of an air conditioner. This info is more useful on repairs than ac installations. If your air conditioner is no longer performing well, it could be a fault on one of these ac replacement parts. The basic parts of an ac unit are: –
In this case, we focus on a split ac unit only. The split aircon unit is the most common type of aircons in South Africa. Additionally, it is easier to understand the link between ac replacements parts on a split system. Other ac unit types will also have these typical ac parts, but will vary in arrangement and other support structures. Ducts for instance, are common components of central air conditioning system.
The components of an ac unit in a split unit are in two main sections. First, the outdoor ac unit parts and then the indoor ac unit parts.
The Main Parts of an Air Conditioner Found Inside
The indoor parts of an air conditioner.
First, the evaporator. This unit enables the liquid refrigerant (coolant) to turn into a gas. As air from the room passes this unit, the refrigerant absorbs the heat very fast. The liquid coolant then turns into gas. The gas coolant is then sent to the compressor. Meanwhile, the room gets cooler as more heat from room temperature air is being used up to heat the coolant and boil it into gas.
Second, the refrigerant (coolant) is a special fluid that moves round the system in a loop. It is responsible for absorbing heat from room air and to release it outside. The coolant has good quality in terms of the ease to convert from liquid to gas and back again. Therefore, it is a chosen medium of heat transfer in air conditioning units. Heat transfer is the main activity in the air conditioning and refrigeration services.
Filters – the indoor unit also contains filters and the display functions of an air conditioner are on the indoor unit. The unit is usually a wall mount or a ceiling mount position. Filters help trap dust and therefore are vital for making sure that the air is fresh. Furthermore, dust hinders the spread of cool air, and end up compromising the cooling ability of the unit. Additionally, filters also aid in keeping the ac drain clean, a blockage in the drain will strain the compressor. Consequently, this will cause the pump to over work and run down.
Outdoor AC Unit Parts
Let us look at the outdoor parts of an air conditioner.
The compressor receives the coolant from the evaporator in gas state, and turns it into liquid by pressing it. As the pump presses the gas, its turns to liquid and is sent to the condenser. The liquid coolant is then sent to the condenser coil.
Condenser Coil – By the time the refrigerant gets to the condenser coil, it is already hot and at high pressure. As it passes through the condenser coil, it releases heat and becomes cooler. The cool liquid is then taken back to the evaporator where it absorbs more room temperature air and the cycle continues.
This ac unit part used to be in the indoor, but now commonly found outdoor. Although the coolant leaves the condenser in its liquid state and cooler state, it is still too hot to enter the evaporator coils. The expansion valve is a main part of the air conditioner for this work, and it further lowers the heat levels of the refrigerant to levels that the evaporator can accept.
These three parts, together with the electrical components supplying the compressor, are the main parts of an air conditioner on the outside.
A paving contractor prepares ground and pave surfaces with bricks, concrete, stones, blocks and other desired material. Paving companies work on domestic and commercial property to meet the needs of either human traffic or vehicle traffic. It is therefore clear that home pavement projects have short cycles. Some contractors choose to focus on only one type, either residential pavement or industrial pavement.
In commercial projects, paving companies work on roads and surfaces that support vehicle movement. In other cases, such pavement will bear load for heavy trucks loading and off-loading bays. Other projects prepare concrete floors for storage of equipment and other material.
Apart from installing pavement, there is also the maintenance and repair of pavement to look at.
Builders may also be able to do some paving work, especially pavement around the house. However, it is available to choose a company that specializes in paving because their rates are usually lower. This is because paving contractors are faster and more effective. They have more experience which helps them to complete tasks faster thereby cutting costs.
What to Look Out for on a Paving Company
A good maintenance contractor is one able to advise client on the cost implications of design options or renovation proposals. Similarly, a paving company should spend time with the client, discussing and verifying options available, with costing. Such a consultation process should aim at making the most from the available budget. Therefore, getting several pavement installation quotations in detail will aid a client to decide on how to select the best contractor.
Examples Where Paving Contractors are Required.
Here are a few examples of what a paving company deals with:
Laying and paving driveways, walkways, and footpaths.
Paving patios, pool surrounds and washing areas.
Surfacing and resurfacing courtyards and car parking lots.
Roads and commercial surfaces.
A paving walkway can make a huge difference in terms of creating a welcoming and warm reception to your visitors. Whether it is a home or business premise, you can create easier passage from the garage or main gate to the door. Also, you can get affordable paving contractors that can help you achieve your dream at a low cost.
Not only do you get an opportunity to protect surrounding landscape features, but you can enhance the overall landscape by making use of a complementary sidewalk pattern.
A wide selection of different shapes, sizes, and colours so you can create the exact pattern and design of choice, in line with existing elements.
Furthermore, you can choose paving walkways with border lines or without border outlines.
Pavers with open edges allows the blending of paving with lawn and gardens, creating a fading away impression on your entire landscape.
Types of Pavers for Walkways
Natural Stone Pavers
They are non-slip, soft in texture and available in different shapes and dimensions.
Stone pavers are strong and long lasting, making them an ideal choice for sidewalk paving.
Additionally, stone pavers appear in many colours, giving you extra authority in designing a dream home landscape.
Moreover, the cost to maintain stone paved sidewalk is extremely low.
Concrete pavers can follow any shape and form according to your existing landscape. On top of that, various colour schemes are possible so there is plenty of choice in design. If your sideway is to accommodate heavier traffic, this could be the material of choice for a walkway paving.
The cost of installing and maintaining a brick paved sidewalk is low. Brick pavers are easy and quick to fit in. The removal and reinstallation of a portion of the walkway is much easier for brick paving than for concrete for instance. The potential for varied patterns is numerous. Therefore, it’s easier to complement your entire landscape with brick pavers.
Your home improvements service provider can assist you with options.
Advantages of Paving Walkways
Clarity of passage to walk from garage to front door, or from gate to door.
Paved walkways can bring out the beauty of surrounding features and can be designed to bring special attention to other garden elements.
Give an opportunity to improve the aesthetic value of property, the chance to match and complement the overall colour and design of the house, including material that complements each other. Therefore, your property resale value is enhanced.
Completes the entire home landscape, giving it a more appealing look.
Provides a level surface for visitors to walk along safely.
A clear passage for delivery of other items that needs to roll along or be pushed along.
A safe route for children to navigate on.
Sidewalk can protect your gardens throughout your home.
Geyser safety valve installation is a must in order to comply with geyser fittings requirements in South Africa. Safety valve serves to protect water heating cylinder from possible explosion that results from faulty thermostats. Sometimes a geyser thermostat can get stuck on one position, and that may result in overheating.
In such cases, the heating element will continue to boil water since the “monitor” is stuck and there is no instruction to cut off power supply to the geyser. This creates pressure from the steam built up in a closed cylinder.
If the geyser safety valve is not installed, such a case will result in geyser explosion.
The safety valve works by opening to let out air and reduce pressure whenever the pressure rises beyond the safe value.
The second function of this valve is over pressurizing. This normally occurs when your pressure reducing valve fails. When that happens, there is no reducing of pressure from municipal lines.
The safety valve will immediately sense such a surge in pressure and open to release extra pressure out.
Installation of Geyser Safety Valve
Alternatively, turn off the water at the house supply valve.
After that, the removal of the relief valve is done by turning it anticlockwise with a large pipe wrench. Then application of a sealant to the threads of the new relief valve takes place.
Finally, the valve is inserted into the opening in the tank and threaded in. The valve should be tight enough not to allow water to escape.
When you have a geyser not heating up, there are 3 possibilities. The first one is no power supply. If a geyser is not receiving power, it will obviously not perform its function. Therefore if you face a geyser issue where there is no hot water, you should begin by checking that there is power getting to the water heater. Simply checking that the circuit breaker is on and is in working order can save you trouble. A faulty circuit breaker is easy to replace.
Besides the no electric supply problem, there are also other electric problems that may cause a geyser to malfunction. An example is poor contact points, or exposed wires that may result in geyser tripping electricity. Professional geyser installers always make sure there is power isolation to specifically supply geyser for repairs to take place effectively.
Geyser Parts to Check When Geyser Not Heating Properly
There are 2 geyser parts making crucial in the heating function of a geyser.
The heating element and the geyser thermostat are the two parts to check when you do not get hot water, or when the water is not hot enough.
Let us look at a situation when the water is hot but not hot enough. So clearly, geyser is on and receiving power supply, but there is an issue with temperature. In this case, the thermostat temperature setting needs adjustment. The temperature should be set at no less than 50 degrees Celsius.
Secondly, if there is no hot water at all, that could mean a faulty thermostat or a faulty element. Thermostat is a device that keeps the temperature of water inside geyser at a desired level. It does this by cutting off the power supply once the temperature reaches the set level. It also resumes connection once the temperature falls below the set value.
Therefore, if a thermostat completely fails, there is no activating power supply to the element if temperature falls.
Faulty Heating Element
A Heating element is one that gets hot and in turn heats up the water within the tank. Just like an electric kettle with an inbuilt thermostat, the heating element converts electric energy to heat.
If an electric heating element fails, it simply needs replacement. Call for a geyser service provider to assess and determine the cause for your geyser not working properly.
Key factors for Geyser installation service works. Professional geyser installers follow proper steps for the fitting of water heaters, to ensure safe working and use. These are important safety aspects of hot water storage tanks that needs to be considered for proper function. According to the regulations and requirements of SANS 10252-1 and SANS 10254, all mandatory parts must be included.
Geyser installation service providers should include all the mandatory geyser parts when fitting a new geyser or replacing an old water heater.
Temperature And Pressure Valve
The temperature and pressure valve should be fitted and have a pressure rating not exceeding the one in the existing system. The tp valve can have equal pressure rating to the one on the existing system.
Expansion Control Valve
The expansion control valve should be fitted and have a pressure rating not exceeding the one in the existing system. The expansion control valve can have equal pressure rating to the one on the existing system.
Pressure Control Valve
The pressure control valve should be fitted and have a pressure rating not exceeding the one in the existing system. The pressure control valve can have equal pressure rating to the one on the existing system.
A Safe Geyser Installation Service Should Consider the Strength of Support Where it Sits.
Water heaters should sit on a solid structure. The dip tray and water heater, must be placed on
tie beams that are supported on load bearing walls. The spacing of such beams must not be more than 500mm apart.
Drip tray should be professionally installed and have proper discharge pipe for drainage.
installed in the correct manner. The drainpipe should be fitted to allow smooth draining of water away from the building and should be easy to see from outside.
These are fitted on cold water supply as well as hot water disposal pipes.
This will ensure no siphonage of the water heater.
Isolating valve must be installed on the inlet pipe of the pressure control valve.
Electrical faults that occur most in homes and offices relate to tripping electricity, electric shock, circuit breaker failure, and electricity surge. Electrical issues are not to be taken lightly, as they pose a threat to life, safety and damage to appliances or property. We look at basic electric problems that are easy and correct. However, it is advisable to hire your local electrician if the problem is bigger and complex.
Electric Faults Relating to Circuit Breaker
Circuit breaker is an extremely import safety device of an electric circuit. Its job is to instantly cut off power whenever electrical current jumps beyond the safe value. Therefore, if your circuit breaker is tripping, it is a good sign of a working safety system. This means that you have cover from possible fires at home or in your office. Additionally, your electrical appliances and machines are safe from electrical damage as well as from overheating or melting.
Although a tripping circuit breaker shows a working safe system, repeats in electrical tripping suggests an electric issue that needs attention. Here are some of the things to look out for if you have tripping electric problems.
Loose or rusted wires – it is often advisable to call an electrician even for small problems like fixing loose wires or rusted wires.
Circuit overload – use only a number of appliances at once and not more, as they cause overload and tripping.
Faulty appliances – if your tools and appliances are not in good working order, this too can result if electrical issues.
Using multiple large appliances at once can push the amount of current flowing to levels above safe capacity. This will trigger tripping the breaker. It is easy to identify which appliance is faulty. Every time that gadget is in use, it will trip electricity even if you change the plug from which it is getting power supply.
Bad wiring is another cause for circuit breaker tripping.
Electrical Problems Faults Electricity Surges
Electric surge is a sudden rise of electric charge. The risk of electric surge is damage to electrical appliances. The damage may occur at the time of incident, or can be a gradual weakening of gadgets that will eventually cause total damage.
In order to maintain a long lifespan of electrical appliances, you have to protect them against surge.
Unlike other electrical faults, a surge is often something that a homeowner can prevent or predict the time of occurrence. Electrical surge problems do not begin in the house, but can be a result of natural and man-made causes. Lightening, slip ups form companies and issues with powerlines can induce a surge in houses.
The use surge protectors is a very good protection of appliances against surge-related damage.
Scarce or Dead Outlets
A very few power outlets can result in overloading the few ones that are present. When that happens, you will have electric tripping more often.
Homeowners should be careful to repair damaged or dead power outlets. Call your electrician to fix such a problem as soon as you notice it.
Electrical Faults That Results in Electrical Shocks
Although electric shocks are usually mild, they can be severe at times and cause serious harm.
Electrical shocks happen when you turn a device on or off. The problem can often be traced to faulty appliance or poor wiring.
Electric faults may also result from accidental damage during renovations, especially where ground digging or drilling of walls takes place. That is why you may need to get utilities detection services before renovation. A good maintenance contractor can also give advice on the matter, or have this service included in his price.
Hazards for electric shock
Damaged or worn electrical cords
Equipment and appliances with improper or faulty wiring
Contact with electrical sources while wet or while you handle wet substances or stand on wet floor.
Ensure your hands are not wet as you use plugs and other electrical sources.
Do not plug anything with exposed wires be it a cable or an appliance.
Blocked sewer lines pose a risk to health. Apart from the bad smell and the ugly site of a blocked drains spilling dirty water outside, there are health issues relating to exposure to sewer drain gases. Health problems common from raw sewerage exposure can come from bacteria or parasites. Clogged sewer drain is a problem that needs no motivation to act on, and drain cleaning specialists are always ready to jump at short notice.
Sewerage pipe systems transfer waste water that collects from sinks, bathrooms and other home appliances. Domestic appliances such as washing machines, dish washers and ice machines for instance, will collect and end up in sewer pipes.
The drainage pipes collecting waste water from all other areas are smaller than the one that collects from toilet. However, drain pipes within a building connect outside the building into one system. Therefore, the sewer drainage pipes outside are wider in diameter than the ones from inside.
How Sewerage Pipes Run
Drain pipes run at slope to enable movement of raw sewerage. The drainage pipe system is therefore not working under pressure except the natural effect of gravity. This means that the system should be free of objects that prevent flow of water. Sanitary pads, hairs, fatty substances and other forms of unwanted solids are the main culprits for a clogged sewerage pipe.
Ideally, sewer pipes should have an inspection point, to allow for drain plumbers to clean out the sewer clog.
For obvious reasons, a sewer line runs underground. Therefore, sewer drain system is one of the most common forms of underground utilities.
PVC is now the most common material in use for sewerage drain pipes. Pipe diameter usually for domestic outside sewer drainage pipes outside the house is 110mm diameter. For sink, bathroom, washing machines and all interior waste water drainage, a 50mm size PVC pipe is used.
Grease, fatty substances, soaps and food particles are common causes for interior drain blockages.
How to Detect Early Warning Signs of Blocked Sewer Lines
Slow draining of toilets and bathroom should not be ignored. They indicate that a drain block is present. Debris can begin to pile up following this, and eventually a full drain block will occur.
Additionally, if you start smelling funny and foul smells then it is time to consider a drain cleaning exercise.
Another common sound is the unmistaken gurling sound that follow after flushing, or when water from a tub is released.
The last thing to confirm a total blockage of sewerage system is a flooding on the outside of the house. At this point, the drain pipe is fully blocked.
Electric Geyser Installation Prices in South Africa
Electric geyser replacements on average cost less than fitting a geyser where no geyser existed before. Geyser installers often charge for supply and installation all inclusive.
Price of fitting a replacement geyser however varies slightly according to brand name, tank size and whether or not other support system needs changing.
It may be necessary to replace shut off valves, dip trays or make small changes to the pipe work if the replacement geyser is not an exact fit.
Connection points to supply water and distribute water may have a small off-set from the previous geyser, but this is a simple matter for plumbers to address.
Additionally, geyser prices also vary slightly according to size and brand choice.
Popular electric geyser brands in South Africa includes Kwikot, Heattech, and Builders geyser. Prices are therefore different since demand for brands is not same. For example, Kwikot geyser installation is slightly higher than builders high pressure geyser fitting.
Electric Geyser Installation Prices for Replacement Geysers
Geyser replacement cost is roughly R7500 all inclusive.
For geyser sizes between 5oliters and 150liters, price is not much different. For instance, a 100liter geyser is not that much different in price with a 150liter geyser. However, as the sizes increases to 200liter and beyond, there is a bigger difference in prices.
Therefore, you need to check what size you want, that will meet your needs.
On average, labour charges for geyser fitting are R2500.
Replacing a water heater is much easier to estimate the price since plumbers make use of existing piping system. This means you can get a price of geyser fitting telephonically, if you know exactly what you want.
Cost Of Installing New Geyser Where There Was No Geyser at All
All things being equal, the cost of installing a geyser from scratch equals the cost of geyser replacement plus additional material for supply and distribution. Such additional material includes dip tray, copper pipes, electrical isolators, shut off valves and any other part that does not come standard when buying a geyser. Basically, all geyser parts that do not come standard when buying a geyser will make a difference on price.
Hence, distance to from the nearest possible water supply, and nearest link to distribute hot water counts.
It is clear that the final quotation for fitting a new geyser from scratch is determined after a site inspection. Also, labour might also be slightly higher depending on additional hours needed to install the support system.
Geyser thermostat data that is just good to know, for consideration when you are not getting hot water from your water heater.
A thermostat is a heat sensor that controls the level of heat in a system. This is made possible by switching a load on or off as the heat levels rises or drops.
These sensors are useful in any systems where one needs to maintain heat levels to a pre-set value.
Heat sensors have a wide range of uses in areas such as heating and cooling systems, central heating systems and many others.
Position of Geyser Thermostat and its Function
For a geyser, the heat sensor does not get in contact with water, therefore it senses the heat levels of the element.
The element is the one that actually gets hot and in turn heats water within the tank.
A water heater thermostat has a head and a rod “tail” attached to the head. The rod fits into a hollow socket of the element, and senses temperature of element.
A desired temperature is pre-set on the thermostat. One the level is reached, the unit cuts off power to the element. Conversely, if the heat level drops below the pre-set level, the sensor will reconnect the element.
When your water is not hot at all, geyser installation and repairs professionals begin by testing if geyser thermostat is in working order. If this sensor fails, it means it ceases to sense anything and therefore can not trigger the element to heat up or to stop supply heating.
How To Adjust Thermostat Settings
First, ensure power supply is cut off as a safety measure for geyser maintenance.
Then locate and remove the protective cover, also known as a geyser gasket. The gasket can be easily taken out by turning screws with a flat screw driver.
In modern heat sensors, the adjusting lever is out in the open, so all one has to do is turn it to the temperature of choice. There are marks around the head of the sensor and the lever has to point to the desired value. It is important to use the correct range of geyser thermostat temperature. Correct thermostat setting ensures safety as well as best energy use. Ideally, temperature should range between 50 degrees and not more than 70 degrees.
No hot water is the most common sign of a faulty thermostat. However, a faulty sensor is not the only cause of no hot water. If you are not sure about a faulty geyser, call your local plumbers for help.