Dual Starting Systems
February 19, 2014
Do you have generators with dual starters & battery sets for redundancy? How many battery chargers are supporting your battery sets? If you answered “one battery charger”, this is your primary risk area.
If your only battery charger fails, you no longer have the ability to charge all four batteries, and therefore have lost the redundancy that was designed into your starting system. Dual starting systems for generators and fire pumps should have dual battery chargers to ensure the highest level of reliability.
For life safety systems and mission critical systems, dual battery chargers for 24 volt systems can reduce starting risk when your systems are called upon during a power outage or fire.
Quick Tip: Run Your Unit Every Week!
October 15, 2013
The single most important step you can take to preserve your equipment's value and dependability is to...
Run Your Unit Every Week!
Why is this so important? Quite simply, engines are made to run - not sit idle in readiness for an emergency. When they sit, all sorts of bad things can happen. Air can get into the fuel lines, lubricating oil can drain from the rubbing parts, water can condensate on electrical parts, and many more. In contrast...
By running your unit each week (called "exercising the unit"), you accomplish the following:
a) make the unit happy by preventing bad things from happening and, equaly important,
b) you get positive verification your unit is ready for a power outage.
Most units have some type of "exercise clock" that will automatically exercise the unit. If you are not sure, call.
Common Maintenance Mistakes: Failure to Maintain Your Automatic Transfer Switch
August 30, 2013
Unless you maintain your Automatic Transfer Switch (ATS) each year, you risk failure of your emergency power system just when you need it -- and that’s when the power goes out.
All the ATS makers, without exception, recommend an annual maintenance. This includes Zenith, ASCO, Westinghouse, Onan, Kohler, etc. The makers know their equipment best, so if they require it every year, it’s important to listen.
NFPA110 (the National Fire Protection Association) calls for a yearly maintenance on all ATS units. NFPA is the most commonly used standard in our industry, and your local Fire Marshall probably uses this standard as well. Please call us for a copy if you don’t have one.
Your ATS is 50% of your system. Obviously, if your generator set doesn’t perform you won’t have emergency power. Likewise, if your Automatic Transfer Switch doesn’t perform, you won’t have emergency power. Both are critical, and both should be maintained as intensively as possible.
Important next steps:
1) Check Your Records. If you haven’t had this ATS maintenance work done in the last year, that work is due.
2) Get Information: Begin to gather the information you’ll need to understand how this work must be performed and how to manage the potential internal disruption. Call us and ask for “Automatic Transfer Switch maintenance...what do I need to know?” We’d be happy to talk you through the impact to your facilities.
3) Call us to Schedule the Work. We are flexible and can schedule this work during off-hours to minimize disruptions..
Remember: Your maintenance program must include an Automatic Transfer Switch Maintenance or -- by definition -- it is not comprehensive!
What is "Meggering"(TM) or "Insulation Resistance Testing"?
May 1, 2013
Insulation resistance testing is a specialized procedure where the integrity of the electricity producing portion of your generator set (alternator) is tested in a safe & isolated condition. During the test, DC voltage is applied to the alternator windings to determine if the insulation is damaged and may cause a short circuit under normal operation. This test is a crucial part of maintaining a reliable on-site emergency power producing plant and is recommended annualy by NFPA 110. This test can identify and prevent catastrophic failures to not only the generator set, the Automatic Transfer Switch as well as anything on the entire emergency load circuit.
This test identifies weakness of the dielectric strength of the internal components that may under normal conditions not be detectable until a total failure occurs. Identifying these impending failures is a relatively simple process and typically will not impact any supported building systems. If problems are found, steps can be taken to ensure your on-site power needs are met and costly damage to your entire emergency circuit can be avoided.
Is My Diesel Fuel Still OK?
March 13, 2013
Fuel studies have shown that diesel fuel starts to deteriorate and form solids within 60-90 days after refining.
As this change occurs, naturally accumulating particulates increase in size and mass. Heavy deposits are soon to be found in the filtration equipment and sludge forms in tanks and other fuel system components. This sludge (or “algae”) is the most common cause of clogged filters, loss in engine rpm, excessive exhaust smoke, and damaged fuel injectors.
Additionally, water condenses inside fuel tanks wherever there is open space, Correspondingly, it is highly advised that tanks be maintained at full levels. NFPA 110 recommends an annual test of your diesel fuel by sending a sample to a laboratory for analysis per ASTM Standards.
So what should I do to manage my diesel fuel properly? You have a few choices:
1. Use up your fuel within two years.
Why two years? It takes approximately that long for the deterioration of the fuel to become serious. If you “turn over” your fuel within that period, you should be OK. This means if you have a 100 gallon tank, you should burn 100 gallons in two years.
But what if you can’t? Then you should...
2. Recondition your fuel.
What does this mean?
It means you remove the contamination from the fuel every two years. This process is a called fuel polishing.
Fuel polishing systems use multi-stage filtration, enabling sludge and water to be removed from the fuel tank. Fuel additives are introduced as well. These additives work in conjunction with the filtration process to ensure the fuel is free of particulates, sediment and water.
Typically, the cost for this service is about half the cost of new fuel.
3. Drain & refill with new fuel.
This is the easiest and quickest approach. But it is also the most expensive.
The net result of active fuel management is clean tanks, enhanced combustion, elimination of carbon deposits, reduction in harmful emissions, and lower fuel consumption.