Summer is finally here and with that in mind, you want your AC unit to work properly. Regular maintenance is important and it will ensure that your unit will not fail in years to come, but breaks can happen, especially when you need your AC most, just like any appliance in your home. You can contact professionals to get that fixed, but you can also try to fix it yourself.
We reached out to HVAC experts at Action AC for some tips on how to fix my AC when I can’t afford to wait for someone to fix it. Here’s what you can do even if you are not tech-savvy.
Here are What To Do When Your AC Unit Stops Working:
1. Power Off
This is a precautionary measure before you attempt to do anything. You need to ensure you are working in a safe environment, so safety first! What you need to do is locate your breaker panel which is usually outside. You can disconnect the panel to leave your AC completely without power. Only then is it safe to proceed with whatever you want to do? Do not forget this as you might put yourself at risk.
2. Check The Capacitor
When you’ve turned the power off you may proceed with the repairs. If your unit has stopped working, the first suspect you need to check is the capacitor which is located inside the compressor and it provides power for the whole unit. You can very easily test if it’s working and if not then you only need to replace it. This shouldn’t be too hard or expensive.
3. Check The Electrical Panel
If the capacitor proves to be working you can then check the electrical panel, and what you want to see there is if there’s any blown fuse or tripped breaker. If the problem is due to a faulty fuse then you can visit the closest hardware store and buy a new one. If the problem persists then it might be best to contact professionals.
4. Check The Filters
Maybe your AC is fine but the filters are clogged with debris from years of service and lack of maintenance. This issue is common with almost any appliance, and the more you take care of it the longer it should last. Filters should be replaced once or twice a year depending on how often the AC is used, and you can check if they are dirty before the start of every season. Filters should be cleaned and replaced regularly because they are very often the main cause of AC’s poor performance.
5. Regular Maintenance
If you want to ensure that your AC unit will function properly the best precaution you can take is to hire a professional to do a regular check-up. A professional will check if everything is working properly outside the season when the AC is used very little or not at all. By doing this you will avoid any surprises or sudden breaks when temperatures start going up and you need your AC to work. This little investment will save you money in the long run because breaks in the middle of the season can be expensive, and sometimes you might wait a few days before anyone can come and take a look. So the best way to deal with a potential malfunction is prevention.
6. Contact A Professional
If you feel like you’ve exhausted all the options or if you are not confident enough to check further you need to call someone with proper tools and knowledge to fix. Sometimes there’s no point trying to fix an AC because it’s due for a replacement, and you might waste time and energy trying to fix when an expert can very quickly realize that there’s no point because repairs would cost more than a new unit.
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Ever since mobile app development was introduced, it has not been without its own challenges with security being the most pertinent. Developers have always seen mobile application security as a big challenge owing to increasing cyber-attacks which has made the entire process even more vulnerable.
The major reason why mobile apps are the prime target of attackers is that they contain private and confidential data such as passwords and bank details. While several app development agencies have managed to come up with various measures to curtail the menace, it is, however, evident that mobile users cannot comprehensively rely on other third-party software. This is why has become relatively pivotal to consider the role of blockchain in-app security.
What is blockchain?
Before considering how relevant blockchain technology can be to app development, it is needful to first understand what blockchain itself is all about. Commonly referred to as the “base of all cryptocurrencies,” blockchain is generally regarded as the new big thing. In fact, there are those who consider this technology to be the next internet. Thanks to its revolutionary working principle, blockchain has not only managed to take the mobile app world by storm but it’s also influencing other sectors around the globe.
Simply put, blockchain is an open-source for all databases that cannot be tampered with or rewritten. It is designed as a digital database that contains several pieces of information such as financial transactions and other records that can be shared and used simultaneously within a wide decentralized network that can be accessed publicly. Blockchain technology functions in a way that is different from every other technology in the IT world. Basically, it seeks to enhance the speed, efficiency, security, and transparency of transactions performed across a peer-to-peer network.
While blockchain has been in existence long before now, it was, however, less prominent until the recent success of Bitcoin. Just so you know, Bitcoin is a product of the blockchain technology. Nevertheless, it is important to note that the usefulness of blockchain cuts beyond cryptocurrencies and can affect different other sectors. Due to the massiveness of its scope, virtually every industry is seeking to adopt the technology as their first choice, including the mobile app development sector.
Securing Mobile App Development with Blockchain Technology
Importance of blockchain technology in mobile app development :
Apart from its relevancy in performing peer-to-peer transactions, there are several other ways blockchain technology can be employed. When it comes to mobile application development, app developers and development agencies are very optimistic about incorporating this technology into their development process.
Generally, they believe that blockchain technology can help to greatly make mobile applications secure than ever due to the unaltered database it provides. Undoubtedly, this is amazingly true as there are several areas in which blockchain adoption can greatly impact mobile app development, including DNS/PKI, anonymous voting system, digital money transfer, maintaining healthcare records, managing property, accrediting the supply chain process, making online payments, and proving identity.
Enhancing mobile app security with blockchain :
Well, it is no more news that blockchain technology can effectively boost mobile app security. But this cannot be achieved if mobile app developers fail to understand properly the basic functionalities of blockchain and how it can affect app development. When it comes to making peer-to-peer payments (i.e. transferring funds between users on a network), there is every guarantee that such transactions are safe. This is why many mobile app development agencies are confident that technology will offer better app security. Here is how the technology can enhance mobile app security.
Safe transactions :
The incessant issue of hacking has made most mobile users afraid of online transactions. Obviously, there will be no more financial security worries with blockchain tech. This implies that users will enjoy the privilege of making funds transfer from and into their mobile wallets with absolute trust in the app knowing fully well that they are in safe hands. This will also help to drastically reduce the costs of making global payments as users will be enabled to make easy cross-border blockchain payments via their mobile apps. With these applications, users will be able to use the blockchain tech to make transactions on their smartphones and tablets. This implies that mobile users will not need to worry about owning a blockchain-enabled phone as every needed access will be provided on the app.
Absolute transparency and protection
Unlike other technologies available in the IT world, blockchain offers a unique feature that makes it uniquely different. With this technology, it is interesting to know that users’ data and information will remain securely safe as they cannot be breached. Here, absolute transparency and protection are maintained at the highest level. Even while everything on the network is carried out publicly, one thing users should know is that there is no breaching of information on the blockchain. To this end, it is imperative for mobile app developers to ensure that their development process is performed in line with blockchain’s principles so as to enable users to gain direct access to the network without having to hide anything.
Secured identity :
The main reason why hackers are gaining easy access into people’s account and stealing sensitive information is that many mobile users’ identity is not secure. But this is not the case in a decentralized platform. As a matter of fact, it is absolutely impossible for anyone to steal data from a decentralized system. In the blockchain, every user is provided with an encrypted private key that cannot be used by another user. To this end, it is highly difficult (if not impossible) for anyone to alter another user’s information or data on a decentralized platform.
No password required :
With blockchain tech, app users will no longer require a password to protect and access their mobile applications or devices. Just so you know, the technology has been designed to keep user information and data safe without the need for authentication.
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Transfer pumps are used to move liquids from one place to another. Various types are suited for different applications, fluids, and industry settings. Understanding the unique features and workings of the major transfer pump types can help you select the right one for your needs. This article explores centrifugal, rotary, reciprocating, metering, and diaphragm pumps, along with their typical uses. Read on for the insight!
Types Of Transfer Pumps
There are a variety of transfer pumps available for different applications at providers like KNF USA. The major types include centrifugal, rotary, reciprocating, metering, and diaphragm designs. Below are elaborate discussions on each of these.
Centrifugal Pumps
Centrifugal pumps are a versatile choice for transferring large volumes of low- to high-viscosity liquids efficiently. At the heart of these pumps is an impeller inside a casing that spins at high speeds to accelerate fluid outward from the center via centrifugal force. The kinetic energy imparted on the liquid creates flow through the discharge piping.
Unlike positive displacement pumps, centrifugal models provide non-pulsating flows that are perfect for services like boosting pressures across piping systems. The curved vanes of impellers can handle particulates without clogging, too. You get reliable service life even when pumping water containing suspended solids or abrasives.
While centrifugal pumps generate substantial heads or pressure rises by velocity change, adjusting impeller diameters and rotational speeds allows customizing performance for the liquid and throughput demands. These pumps can tackle everything from thin polyethylene glycols to highly viscous oils or process chemicals.
Common applications capitalizing on such adaptable pumping capabilities include:
Generating water pressures to replace gravity feed systems
Transferring diesel and lubricants in refueling operations
Moving liquid food ingredients between storage and processing vessels
Circulating hot oil to distribute heat at chemical plants
Supplying river water to filtration systems at portable plants
Whether thin or thick, corrosive or benign, centrifugal pumps represent a safe bet for continuously handling large volumes across pipelines with ease.
Rotary Pumps
Rotary pumps handle liquids through unique rotary displacement mechanisms like gears, lobes, vanes, screws, and cavities. This single shaft and bearing design not only minimizes maintenance but enables handling viscous products up to one million cPs. Such high viscosity capabilities prove invaluable when transferring adhesives, coatings, greases, tars, and heavy crude oils across food processing, chemical production, oil drilling, wastewater treatment, and paper manufacturing settings.
While providing pulse-free flow, rotary pumps allow bi-directional operation as well, either pumping or metering flow, depending on how system valves and controls are set up. This flexibility suits applications ranging from precision additive dosing to bulk transfers into tank trucks. By handling everything from solvents to sludge, you get optimal utility from just one rotary pump type.
Reciprocating Pumps
Oil patches, mines, boiler rooms, and chemical plants have relied on heavy-duty reciprocating pumps for ages to easily transfer viscous fluids. A motor-driven piston is thrust inside a cylinder to draw in suction liquid via balls check valves before discharging volumes out under high pressure—all in continuous cycles.
This positive displacement working principle is suitable for high-pressure injection duties. Plunger pumps configured for ultra-high pressures facilitate hydraulic fracturing operations across gas and oil wells to improve yields, for example. Boiler feed pumps also ensure precise metering of feedwater to maintain proper drum levels and steam output.
When handling toxic fluids like aircraft deicing agents that require containment, reciprocating pumps prevent leaks and offer explosion-proofing as well. You can count on this versatile pump style for mission-critical transfer and metering challenges.
Metering Pumps
Whether conveying ammonia, alcohol, or even fruit concentrates and medicines, metering pumps ensure accurate flow measurement and dispensing. Diaphragms pulsate or pistons stroke at controlled speeds to handle precise liquid volumes per cycle. Operating much like precision reciprocating pumps, metering units work continuously to inject additives, introduce treatment chemicals, or dose active ingredients at extremely narrow tolerances.
You gain optimized usage of expensive ingredients, prevent overdosing situations, cut loss from giveaways, and ensure product quality consistency thanks to such pinpoint flow control. Water treatment facilities, swimming pool operators, semiconductor fabs, and pharmaceutical producers rely extensively on metering pumps for regulated chemical handling day in and day out.
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Diaphragm Pumps
Diaphragm pumps lend unique advantages for abrasive fluid handling by eliminating exposure of rotating shafts and vanes to the pumping liquid. Flexible attached membranes pulsate instead to facilitate flow. This makes diaphragm pumps ideal for slurries across mining, agriculture processing, wastewater treatment, paper mass forming, and food pureeing applications where solids quickly erode steel impellers.
Check valves ensure directional flow as the elastomer membranes alternatively draw suction and achieve discharge. You don't have to worry about leaks either when transferring aggressive solvents or corrosive chemicals, thanks to the isolation membranes provide between pump internals and casings exposed to liquids. Whether high-purity beverage ingredients or hazardous paint pigments, diaphragm pumps safeguard processed products and personnel.
Choosing The Best Type For Your Needs
With insight into the major transfer pump categories, you can zero in on options fitting your capacity, liquid properties, flow rates, pressure rise, and overall application demands. Centrifugal pumps take the lead for high flow conditions, while metering and diaphragm designs manage strict precision flow control. Evaluate operating environments as well when materials compatibility is critical. Discussing details with suppliers gives you professional guidance to match a pump successfully.
The wide world of transfer pumps holds something suitable for any liquid transfer duty. Do your homework on the fluid properties and application specs. Understanding pump operating principles also guides you to the ideal selection. With these insights, you pick the right pump to fulfill your liquid handling requirements.
Conclusion
The various types of transfer pumps each serve distinct applications depending on factors like liquid characteristics, flow rates, pressures, precision, and duty environments. You now have a helpful overview of the unique features, workings, and typical uses of centrifugal, rotary, reciprocating, metering, and diaphragm pumps. With these fundamentals, you can make informed decisions when selecting a transfer pump for your needs. Discussing specifics with suppliers adds insights to hone in on the best equipment.
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Technology evolves at mind-boggling speeds. And that makes us all scramble for the latest, newest, shiniest, ‘swaggiest’ gadgets. As a result, we end up sneering at any suggestion to buy second-hand or factory refurbished laptops.
But think about it. All the advantages of refurbished, pre-owned, for-sale-again, or reconditioned equipment.
They cost less
In good condition, refurbished dell laptops work just as well as new
The peripherals are almost always brand new
A good vendor can offer customizing options
On the other hand, buying new always costs top dollar. Plus, any psychological edge or swag wears off as soon as you purchase. There will always be something better, trending, or on the verge of being released. This is true for PCs, laptops, smartphones, smartwatches, and almost any other tech gadgets for personal or business use.
Buy “Like-New”
Have you ever bought your laptop and was excited to get it home and test it out. Then when you unwrap it you find something’s not right? Either it doesn’t turn on, or the screen resolution ain't right, or a corner of the casing is cracked? Of course with a return policy, you send it back and the vendor promptly sends you a replacement.
Ever wondered where these rejects go? Well, it only makes business sense to sort out the issue and sell it again, right? But now, it can’t be sold as new. Yet it only required a keypad replacement, or a screen replacement, or maybe just a battery issue.
When you return your purchase, the retailer sends it back to the factory where it’s tested and if possible, repaired. It goes through the quality assurance stages once more, just like new, and put back on the shelves with an enticing discount and probably a renewed warranty. Would picking a brand new one offer any advantages over this sweet deal?
Get An Open-Box Deal
There are laptops that are returned even without hardly ever being removed from their packaging. Others are handled minimally before being returned.
Consider these scenarios: someone may return an unwanted gift. A retailer may ship 2 pieces for a single order. A customer may cancel an order. A laptop may lack one of its accessories or documentation in the packaging. There are many different scenarios where a laptop gets returned and can’t be sold as new.
For the second buyer, these factory refurbished laptops and refurbished desktop computers create an awesome opportunity for making huge savings without compromising on quality or making big warranty sacrifices.
Previously-Owned Bargains
As previously mentioned, w all love having the latest gadgets. This means lots of people trade in their gadgets for newer models. Some resell their almost new laptops for a competing brand. Whatever the case, factories find they have to reset and refurbish many almost-new pre-owned gadgets.
You can snag up a bargain on almost-new HP refurbished laptops that aren’t technologically too left behind. What most of these laptops require is hard disk formatting and resetting the operating system since the hardware and peripherals are still new.
What to Watch Out For
Don’t just go for refurbished laptops for sale. Go for a laptop that’s been refurbished by the original manufacturer or an established and reliable factory. Factory-refurbished laptops tend to have a higher QA standard rating than a laptop coming from a retailer.
Nonetheless, to avoid common pitfalls or being ripped off, there are some basic stuff you need to watch out for.
Limited warranty: Used laptops under 100 may come with shorter duration warranties compared to new units. The warranty may also cover less parts. Most factories and manufacturers will offer 90 days instead of the standard 1 year. Some manufacturers offer extended warranties at an additional nominal price.
Old Tech: While not always true, most refurbs tend to be at least one generation behind the current technology.
Battery Life: The previous owner may have mishandled the battery or charger. Battery life problems are usually not apparent when testing, and only become obvious upon multiple use.
Returns Policy: Go for a refurbished laptop that comes with a flexible return policy
Software: Make sure your refurbished laptop comes with original software, especially the operating system.
Factory Refurbished Laptops Vs Brand New: My Verdict
If you’re going for style over substance, then sure, get that new gadget and get your swag on. If you can’t stand the thought of using what once belonged to some stranger, then a factory refurbished laptop isn’t for you.
But if you want to get a practical machine that works as well as a new one and comes with a factory warranty/guarantee, then refurbished may be the way to go. If you want to get a tried and tested brand and model without bursting your bank account, you might want to consider factory-refurbished laptops. If you want savings to help you upgrade your laptop’s components, then factory refurbished will give you that freedom.
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