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Motors, Maintenance & More...- Tuesday, March 22, 2016

Here at Fanbuyer we care about the quality and workmanship of the products that we supply and we know that a well looked after fan and motor should provide you with years of efficient and reliable service. So we’ve listed a few essential rules to consider when it comes to handling, storage, operation and maintenance.

Do:

-          Store motors in a clean, dry area with a humidity of 60% or less and away from sources of vibration.

-          Check minimum loads are maintained at all times to ensure the shaft can rotate on the motor.

-          Consider coupling your motor with a variable speed drive in order to reduce the strain on components, improve efficiency and enable tighter process control.

Don’t:

-          Activate a motor that has been stored for an extended period of time before checking the installation resistance of the windings to ensure that moisture damage has not occurred.

-          Excessively lubricate bearings, causing overheating.

-          Oversize motors, as this can cause poor performance and increased electricity consumption.

-          Allow dust to accumulate.

-          Ignore unusual noises such as grinding and scraping as these can indicate that the shaft or bearings may be damaged.

When taken out of storage, the fans and motors should be in perfect working order and ready for operation. Ensuring that the above is followed will enable your equipment to remain in good condition for a prolonged period of time.

The Fanbuyer collection includes a wide range of fans and fan accessories for use with various applications making it simple, quick and easy to purchase the product that you need. Why not give us a call to discuss your requirements. 

Tags :  fansmotors
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We've Had It Up To Here! UK Floods - Monday, February 1, 2016

We all know that England is the home of rain. It's traditional to expect a lot of it, it's why we all carry an emergency umbrella just in case, but we’re also aware of the incidents where heavy rain has forced many British residents to evacuate their homes recently. The widespread flooding meant Britain experienced its wettest month last December 2015 since the Met Office records began in 1910.

Fanbuyer.co.uk Man CoolerThe floods have caused lots of damage including broken fences, damaged houses and countless trees uprooting and falling down blocking roads. Inches of rain fell in the worst affected areas and winds of up to 70mph left some parts of England under water. As the level of water rose, a large group of people were left with no power for several hours while some residents had no choice but to abandon their homes and even cars in some cases.

Weather forecasters advised that the risk of flooding will continue for some time to come and warned of further heavy storms across England, Wales and Ireland but recognise how natural disasters cannot be avoided especially if located close to seafronts or rivers. 

So what can be done when the floods have gone and so many residents are left with wet buildings? Good ventilation will of course aid out the drying but it’s a long process. Opening windows and doors on dry days will naturally ventilate the building as moisture can only escape when it can get out. Therefor it’s advisable, if possible to utilise the use of fans such as the Fanbuyer Man Cooler to help circulate the air and draw any humidity out of the building. Fans are more beneficial than heaters as they speed up the whole process by increasing the air flow and evaporation rate within the damp environment.

"The Man Cooler is a very useful portable fan which can be used in a variety of ways. It is a portable version of a cased axial fan and is fully adjustable when it comes to tipping the air jet up and down, so much so that the fan will actually blow directly upwards. The fan comes complete with guards, feet and a manual switch."

There are tools that can be purchased to monitor if a building has dried but a lack of condensation may indicate that a building has dried out. The length of time that a building takes to dry out is extremely variable and will be affected by a number of factors, including the severity of the flood and the type and thickness of the building materials that have been in contact with the flood waters. You should be prepared for the process to take months rather than weeks in the case of dramatic flooding.

Tags :  VentilationFloodsDryingHumidityAirflowPortable FansFanbuyer
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Top Marks For Top Ventilation- Thursday, January 7, 2016

How often do you hear people talking about pollution, air quality and the cleanliness of outdoor air? The fact of the matter is that most of us spend up to 90% of our time indoors and remain unaware of the quality of the air that we breathe in when indoors, be it at home, school, at our workplace or other indoor areas. Studies show that indoor air can be as much as 50x more polluted than the air outside. 

Let's look at when this matters, children spend a significant amount of time, almost one fifth of their week indoors. School being the main habitant Monday to Friday. What impacts the Indoor Air Quality within buildings such as these? We can look at the pollutants that are naturally emitted from everyday items, namely carpets, curtains, furnitures and even cleaning products. At high levels, these pollutants can cause health problems including asthma and eczema. Coupled with Industrial pollution from outdoor air from a window or open door or even ventilation systems if these are incorrectly maintainned this can lead to inadequate levels of clean indoor air. 

Effective ventilation is extremely important in providing good indoor air quality especially to ensure effective ventilation in schools. Many studies have proven that well ventilated clean air can lead to better student performance by maintaining student alertness and maintaining health. Whether sufficient Natural ventilation or Mechanical ventilation, the level of Carbon Dioxide should be monitored to not exceed the recommended level of 5000 parts per million (ppm) in a teaching day. The level can be reduced throughout the day by introducing fresh air to the room. 

Does this sound like a challenge? With many reputable engineers now installing and commissioning modern energy efficient systems, there's now no excuse to have bad indoor air quality, whether it be at home, work or school. 

If you have a question about how we can help with cooling, do not hesitate to contact us on 0844 412 0890

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Poor Ventilation: A Christmas Tale- Friday, December 4, 2015

It's the run up to Christmas, it's getting colder outside and the heating is being turned up indoors so it's an important time to consider some of the problems caused by poor ventilation in our homes. Fanbuyer explore a little deeper....

  • Poor ventilation: Stale Air - The stale air is usually caused by the cooking smells, people smoking, the odours remaining in the bathroom, a general lack of ventilation around the house as well as by a damp atmosphere. All these problems can cause an certain level of discomfort (which can be avoided!) as well as the risk of respiratory illness and general poor health.
  • Poor ventilation: Condensation - Problems can occur when the steam from the kitchen or bathroom finds cooler surfaces around the house on which to condense. When we attempt to conserve the heat by sealing the windows – and therefore reducing the natural ventilation – we actually make this problem even worse. Condensation can cause some considerable problems from peeling wallpaper and mould growth to severe structural damage such as wood rot and damp.
  • Negative Pressure and Infiltration - Another ventilation problem plaguing residential structures nationwide is negative pressurisation. When a home is under negative pressure, air is drawn into the home wherever it can get through. Often, it travels through attics, small spaces and other dirty spaces before reaching living areas. To resolve the issue of negative pressure in houses, we can either bring in outside air through a duct tied into the return ducting of the HVAC system or bring in outside air by adjusting an HRV (heat recovery ventilator system) to bring in slightly more air than the structure exhausts.


Why ventilate? - For centuries homes weren’t ventilated, and they did all right, didn’t they? Why do we need to go to all this effort (and often considerable expense) to ventilate houses today? There are several reasons that ventilation is more important today than it was long ago. Most importantly, houses 100 years ago were really leaky. Usually they didn’t have insulation in the walls, so fresh air could pretty easily enter through all the gaps, cracks, and holes in the building envelope.

Also, the building materials used 100 years ago were mostly natural products that didn’t result in significant offgassing of volatile organic compounds, flame retardants, and other chemicals that are so prevalent in today’s building materials, furnishings, and other stuff.

Ventilation options

Ventilation can take many different forms. Very generally, systems can be categorized into about a half-dozen generic types:

    1. No ventilation. This is almost certainly the most common option in American homes. There is no mechanical system to remove stale indoor air (and moisture) or bring in fresh outside air. In the distant past, when buildings weren’t insulated, this strategy worked reasonably well—relying on the natural leakiness of the house. It’s worth noting, though, that even a leaky house doesn’t ensure good ventilation. For this strategy to work there has to be either a breeze outside or a significant difference in temperature between outdoor and indoors. Either of these conditions creates a pressure difference between indoors and out, driving that ventilation. On calm days in the spring and summer, there might be very little air exchange even in a really leaky house.
    2. Natural ventilation. In this uncommon strategy, specific design features are incorporated to bring in fresh air and get rid of stale air. One approach is to create a solar chimney in which air is heated by the sun, becomes more buoyant, and rises up and out through vents near the top of the building; this lowers the pressure in the house, which draws fresh air in through specially placed inlet ports. Many homeowners may think of opening windows as part of their ventilation strategy, but most people only open windows in the summer—if at all—and because of the pressure differential issue just mentioned, open windows don't guarantee good air exchange.
    3. Exhaust-only mechanical ventilation. This is a relatively common strategy in which small exhaust fans, usually in bathrooms, operate either continuously or intermittently to exhaust stale air and moisture generated in those rooms. This strategy creates a modest negative pressure in the house, and that pulls in fresh air either through cracks and other air-leakage sites or through strategically placed intentional make-up air inlets. An advantage of this strategy is simplicity and low cost. A disadvantage is that the negative pressure can pull in radon and other soil gases that we don’t want in houses.
    4. Supply-only mechanical ventilation. As the name implies, a fan brings in fresh air, and stale air escapes through cracks and air-leakage sites in the house. The air supply may be delivered to one location, dispersed through ducts, or supplied to the ducted distribution system of a forced-air heating system for dispersal. A supply-only ventilation system pressurizes a house, which can be a good thing in keeping radon and other contaminants from entering the house, but it risks forcing moisture-laden air into wall and ceiling cavities where condensation and moisture problems can occur.
    5. Balanced ventilation. Much better ventilation is provided through a balanced system in which separate fans drive both inlet and exhaust airflow. This allows us to control where the fresh air comes from, where that fresh air is delivered, and from where exhaust air is drawn. Balanced ventilation systems can be either point-source or ducted. With ducted systems, it makes sense to deliver fresh air to spaces that are most lived in (living room, bedrooms, etc.) and exhaust indoor air from places where moisture or pollutants are generated (bathrooms, kitchen, hobby room).
    6. Balanced ventilation with heat recovery. If there are separate fans to introduce fresh air and exhaust indoor air, it makes a lot of sense to locate these fans together and include an air-to-air heat exchanger so that the outgoing house air will precondition the incoming outdoor air. This air-to-air heat exchanger—more commonly referred to today as a heat-recovery ventilator or HRV—is the way to go in colder climates. A slightly different version, known as an energy-recovery ventilator (ERV), is similar but transfers moisture as well as heat from one airstream to the other, keeping more of the desirable humidity in the house in the winter and reducing the amount of humidity introduced from outdoors in the summer.
Credit: Alex Wilson
Tags :  Ventilation
Axial Fans- Tuesday, October 21, 2014

Choosing an Axial Fan

Struggling with which type of axial fan to choose? Let us help.

FanBuyer offer two types of axial fan, a medium power and a high power. Although they have similar sized impellers and can rotate at the same speed, they are quite different.

The high power models can be identified by their orange coloured impellers. These are fitted with traditional motors which offer a high level of ingress and water protection (IP65). They tend to be quite robust and can be installed in dirtier environments where there is a risk of dust or splashed water. These models generally offer more air than the other type (about 20%, depending on the variant). The downside is that they have a deeper profile and tend to be noisier.

The medium power versions have black impellers. These are fitted with External Rotor Motors which are compact and benefit from the impeller being directly attached to the motor. They offer better characteristics and controllability than high power models, but with smaller motors. Due to their construction, they offer a lower level of ingress protection (IP44 or IP54). The advantage is that they offer a slimmer profile than the high powered ones and are quieter. Ultimately, they are also cheaper!

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Rosenberg Accessories- Tuesday, February 11, 2014

Rosenberg Accessories

So, you need to buy a fan, but what accessories will you need to make sure you get the best results from your chosen system? To coincide with the arrival of our new range of accessories, FanBuyer provides a basic guide to the most essential fan accessories.

Anti-Vibration Mounts

What Do You Need Them For?Anti-Vibration Mounts help to prevent any unwelcome noise and vibration that may be generated by the fan.
Used With: Cased Axial Fans

Back Draught Dampers

What Do You Need Them For? They allow air to flow in one direction but not the other, they shut when the fan stops to prevent a draught entering the room.
Used With:In-Line Duct Fans

Band Clamps

What Do You Need Them For? Stainless steel braces for holding objects together and in place, used to support the attachment of ducting and ducting accessories.
Used With: In-Line Duct Fans

Case Feet

What Do You Need Them For? Can be fixed to flat surfaces to provide stability, also help to prevent any unwelcome noise and vibration.
Used With:Cased Axial Fans

Connectors & Clips

What Do You Need Them For? Elastic assemblies that allow for the joining of two parts, help to absorb vibration caused by shock from rotating parts.
Used With: In-Line Duct Fans

Ducting

What Do You Need It For? Cylindrical or rectangular piping that is used to transport and propel extracted air; can be used to carry air to another room, etc. Can be rigid or flexible.
Used With: In-Line Duct Fans

Finger Guards

What Do You Need Them For? Prevent fingers coming into contact with fan blades and causing injury. Also protects against certain objects falling into the fan and damaging the blades.
Used With: In-Line Duct Fans

Isolators

What Do You Need Them For? Basically a stop/start switch, removes power supply to fan to allow for repair, maintenance, etc.
Used With: In-Line Duct Fans

Mounting Brackets

What Do You Need Them For? Allow the fan to be fixed to flat surfaces, such as walls, ceilings and floors.
Used With: In-Line Duct Fans

Speed Controllers

What Do You Need Them For? Allow for the adjustment of speed and airflow, this can be useful in winter when you do not require as much cooling from your fan.
Used With: Fans with single-phase motors

Spigots

What Do You Need Them For? Assist with the attachment of ducting to fan inlet or outlet.
Used With: Cased Axial Fans

Shutters

What Do You Need Them For? Act as a cover or screen to prevent unwanted objects, such as dust or rain, from entering the fan. Louvre shutters have slats which open when the fan is on and close when the fan is off.
Used With: Cased Axial Fans

Transformer Controllers

What Do You Need Them For? Another device used for controlling speed and airflow.
Used With: Specifically designed for single phase fans

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ErP Directive- Thursday, October 24, 2013

Understanding the ErP Directive

The aim of the ErP (Energy-related Products) Directive is to lower the amount of energy used by certain products, in order to reduce the effect that this can have on the environment. Any product than can be classified as either energy using or energy related, must now meet specific efficiency standards as set by the European Commission (EC). This affects the way that these products are designed and the amount of power that they require to operate.

The aim of the ErP (Energy-related Products) Directive is to lower the amount of energy used by certain products, in order to reduce the effect that this can have on the environment. Any product than can be classified as either energy using or energy related, must now meet specific efficiency standards as set by the European Commission (EC). This affects the way that these products are designed and the amount of power that they require to operate.

The ErP Directive is being launched in two stages:
Stage 1 - Started at the beginning of January 2013
Stage 2 - Start at the beginning of January 2015

What are the benefits?

The ErP Directive encourages a greater commitment to environmentally sound design and is part of the 20-20-20 target, whereby energy use should be reduced by 20% and renewable energy use increased by 20%, by 2020.

As a consumer, the directive should save you money, allowing savings of up to 65% in energy costs.

How does the Erp Directive affect fans?

As of January 2013, certain fans now have to be manufactured in line with the specific efficiency standards; these standards will become even more rigid with the launch of the second stage.

Which fans are affected?

All fan types with electrical power input between 125W and 500kW. The only real exceptions are those fans which are designed to be used in hazardous conditions such as, ATEX fans (explosion proof), temperature fans (operating continuously at temperatures above 100°C) and emergency smoke extraction fans.

How does this affect you as a fan consumer?

ErP ready fans will be more energy efficient and therefore cheaper to run.

It is estimated that around 50% of fans currently available in the EU will not be compliant with 2015 ErP requirements. It is the responsibility of the manufacturer to ensure that what they offer is compliant. Some manufacturers and distributors are still uncertain of the regulations and may be offering non-compliant fans. It is worth being aware of this and avoiding ‘rogue traders’.

You are not required to replace your existing fans or systems.

How do you identify ErP compliant fans?

As of January 2013, only those fans that are compliant with the ErP Directive will be awarded the CE symbol, this will be displayed on the fan in the form of a sticker or marking. Fans may also be marked with the 'ErP ready' logo, either on the product and/or the packaging or datasheet.

If a Fanbuyer fan is ErP ready then this will be highlighted in the product description.

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Man Cooler- Wednesday, July 10, 2013

The Man Cooler is a very useful portable fan which can be used in a variety of ways. It is a portable version of a cased axial fan and is fully adjustable when it comes to tipping the air jet up and down, so much so that the fan will actually blow directly upwards. The fan comes complete with guards, feet and a manual switch.

As you may have guessed from the name the Man Cooler’s main function is to cool your work force as they work in the office, factory, warehouse, etc. One of the Man Cooler’s main advantages is that it can be moved to the best location to suit your work force making it a very good option for keeping areas cool that can become very hot and uncomfortable to work in.

Some other uses for the Man Cooler are cooling people down when loading trucks, temporary spot cooling on machines, use in gyms, halls, etc. The fan only comes in one size (450mm diameter) and has an airflow which will reach an astounding 15 meters!

This portable fan is made of robust construction and is protected on both sides of the steel case. The fans impeller is made from polyamide plastic and the motor is protected to IP54 Dust and ingress water.

Man Cooler

View the Man Cooler's product page to buy and get more information!

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New Portable Fan from FanBuyer- Tuesday, May 14, 2013

Fanbuyer have now got an exciting new portable fan called the “Man Cooler.”

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Voltage Variation- Wednesday, February 20, 2013

Voltage / Speed Control for Cased and Plate Axial Fans


Simple voltage control can be applied to the single phase Cased Axial Fans and Plate Axial Fans on Fanbuyer, by means of a Transformer Controller.
 
Using a transformer, the resultant voltage output to the fan motor is known as 'sinusoidal' and is as 'clean' as the mains input. The motor therefore does not suffer from electro-magnetically generated noise or additional self heating due to waveform harmonics. The downside is the cost, weight, and space required for the transformer.  

Electronic voltage controllers rely on devices that switch the voltage waveform 'on' at a particular 'conduction angle' that is varied by the turning of a potentiometer. The advantage is low cost low weight and low space.  

External rotor motors have high resistance rotors - which are necessary to enable voltage control. Most will work with electronic voltage controllers because the extra heat is lost to the airstream. It is only in larger sizes of external rotor motor that transformer control can become necessary.  

Standard (internal rotor) industrial motors are not designed for voltage control and - depending on the type of fan - are likely to overheat once the voltage drops out of the normal tolerance band - e.g. a normal 230V means 216.2V to 253V in the UK.  

Three phase voltage control by transformer is extremely expensive, because there is a transformer for each phase.

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