Maintenance Factor

Illumination Systems are designed to fulfill the required lighting level at the end of an operation term and not at day one of the new installation. The luminous flux of the system is going down over lifetime. This is a normal process, no product is lasting forever but the required illuminance levels should not be depreciated at any time. If a lighting system is setup, the maintenance plan has to be fixed too. So the facility managers know how often to clean the room, the luminaries and how frequently to change lamps. A reasonable time needs to be found between maintenance and operating hours, as maintenance cycles are connected to costs. The longer the operation time without maintenance, the more luminaries need to be installed to guarantee the required illumination level at the end of the term. The more frequent the maintenance cycles, the higher the maintenance factor, but also the related costs for the facility service.

Which Points are influencing the Maintenance Factor? Different factors influence the decrease in lighting level like the soiling of the room surfaces, the soiling of the luminaries, depreciation of luminous flux by the light sources or lamps failure.

Room Surface Maintenance Factor: The room surface maintenance factor is the ratio of the room surfaces reflectance before and after cleaning. It is the reduction of the lighting level according to soiling of the room. Luminaire Maintenance Factor: The luminarie maintenance factor is the ration of the luminaries luminous flux before and after cleaning. It depends on the luminarie construction and design (open housing or closed one) as well as on environmental conditions (dirty or clean). Lamp Lumen Maintenance Factor: The lamp lumen maintenance factor is the ration of luminous flux at a specific time compared to a new lamp. It is describing the aging of the lamp or the reduction of light intensity over time. Manufacturers offer comprehensive tables about their lamps luminous flux behavior. Lamp Survival Factor: The lamp survival factor depends on the service lifetime of a lamp. Some lamp lifetimes are reduced by frequent switching. The lamp manufacturers provide tables indicating the lamp survival factor. If a lamp is not working any more, the decision for immediate replacement or group replacement needs to be taken. If the lamp is replaced immediately (mostly in areas where the luminaire is easily reachable) the LSF can be set 1. On the other hand, the decision could be to replace lamps in special terms or group-wise. This could be the case in huge halls, where machines need to be stopped to reach the luminaires.

A maintenance factor of 0.8 shows, that the new lighting system needs to be over driven by 25% not to undercut the minimum required illumination level after 10 years. LED lighting systems are flexible and easy to connect to control systems. The installed load will provide efficient luminous flux at the end of the operation time but the energy that is “over” in the beginning can be saved. The new installation would illuminate an area with required 300lx by about 450lx. The energy can be saved by lighting management systems that are regulating the power concerning the luminous flux depreciation. HID lamps are not easy to control. The energy load that is “over” in the beginning is wasted. No change to save it.

Conclusion: Think carefully when setting up a lighting installations maintenance plan. This starts already with the choice for the light source. LED Modules are efficient, likely not failing and offer long lifetimes between 50,000h and 100,000h. The control possibilities are comprehensive. The luminaries overload, that needs to be installed to guarantee the end of lifetime illuminance levels, can be saved by light management systems. Regarding all the mentioned points, LED is the competing light source. The features are dominant over traditional light sources. Take the chance and install or renew your lighting system by  energy efficient LED light sources and luminaries. If you have further questions please contact the lighting experts at MyLEDLightingGuide.com and discuss products as well as solutions.

By: Jason Lee

Halloween is over which means the holidays are officially here. That means the relatives are on their way and you’ll be using your large appliances more often causing your electric bill to look scary long after Halloween has ended. Don’t let the increase in relative visits and vampire electric devices drive up the electric bill.

To keep the electric bill down, remember to only use the dishwasher when it is full. Running the dishwasher when it is only half full will amount to a lot more energy consumption.

Items like washers and dryers are guilty of consuming more energy during the holidays too. Washing clothes in cold water and setting the dryer on low heat will help in reducing the electric bill.

Knowing when to say goodbye to your old system is another way to save on energy. Older appliances run up the electric bill. If you have an appliance that is over 10 years old, consider replacing it with a newer, energy efficient model.      

It is also a good idea to have all large household appliances connected to their own dedicated circuit. To many of these large appliances operating at the same time on the same circuit can cause a blown fuse or a tripped breaker. A dedicated circuit for each large electrical household appliance will keep this from happening.

Lastly, don’t let your everyday electrical devices like laptops, cell phones or tablets get greedy and hog the power outlets. Only charge these items when they need it.                                                     

You’ll have enough to worry about as the holidays set in. Take the electric bill off the list by doing these simple energy savings tips from Mr. Electric.

In need of a 24-hour electrician in Washington, DC? The experts at Kolb Electric would urge caution! We’ve spent some time talking about scammers in the past, and this situation could put you at risk. Wondering how? For starters, when you need an electrician RIGHT NOW you’re more likely to pay less attention to credentials and reputation. This could lead to shoddy work, dangerous wiring fixes, or just a plain scam!

Looking for a reliable and certified 24-hour electrician in Washington, DC? Contact Kolb Electric right away!

On the surface, nothing at all. Our team offers reliable 24-hour services, and most certified and licensed electricians do. The worry here is pressure. You’re in a pickle, and need a solution right now. And for each trusted professional out there, there’s a scammer who knows you don’t have the time to worry about credentials.

In our posts about scamming and why you should choose a trusted electrician, we talk about how to go about recognizing trustworthy service. We detail things like looking for certification, and checking local peer reviews. And these are all super-duper important! Thing is, you’ve got an emergency on your hands. No one has time to do research in a time like that.

Well, you can certainly do a quick online check. Sites like the BBB (Better Business Bureau) can give you a good idea of whether or not you’re dealing with an accredited and trusted business. But taking your time usually yields better results. The key is to find a team beforehand.

As homeowners, we like having “regulars.” Businesses that we know we can call when we need answers. We do it with a family doctor, or local food joints that we love. Why not do it with home services, too? You should always have major businesses hand-picked for your needs before you need them. Find some roofers, find an HVAC expert, and of course, find an electrician!

Follow these steps to find a reliable electrician for your home:

Our certified and licensed professionals have been providing dependable, trustworthy service to Maryland, DC, and Virginia for nearly a century! We’re proud to say that our satisfied consumers always turn to our team in an emergency. Need a 24-hour electrician in Washington, DC? Contact us!