Having trouble with your APC UPS due to power fluctuations? Watch CoastTec’s Troubleshooting Video now!Click here to read a video transcript
Hi, it’s John Sevel from CoastTec.
In today’s video, we are going to be talking about if you get a unit back and it’s going in and out of battery at the wrong time, how we can adjust that.
If you start to see your unit going into either AVR boost, AVR trim, or even battery too much and you aren’t seeing lights going out or any issues in the building, it’s very common that the voltage coming into the unit might not be agreeable to the unit.
These units are designed to be very sensitive to power fluctuations; that’s what they do. They want to react to a power fluctuation before you have the equipment that is hooked into it can. The problem that you have is:
Typically line voltage in this country is 120 volts coming out of the wall, coming out of the receptacle. The utility company is designed and regulates that voltage coming out of the wall only to 20%. It’s saying that a 20% reduction in your voltage is considered acceptable. While it might be acceptable to the lighting in your house, your dishwasher or at the office, your copier, it is not acceptable to computers and to sensitive switch equipment. That is why these units exist. But, if you take a 20% reduction and your line volt is 120, you are going to be down to about 108 volts- normal 108. This unit is designed to go into battery or to react to a trim or boost at 103 volts on the low side. So if you are at 108 normal, you could very easily go in and out of that 103-volt range and this causes you to go in and out of battery, which is going to decay your battery life. There is an adjustment on the back of this unit that you can make in cases where your line voltage is too low or too high, where it adjusts the sensitivity of the unit and it opens up the window of when this unit will go in and out of battery or in and out of trim or boost; in and out of when it’s going to make some kind of action to counteract the fluctuating voltage.
Let’s take a look at how this is done. It’s a very simple once technical procedure.
Turn the unit around.
If you look at the back at the top up here you see this little green light; this little LED. Right next to it is a little small black button, which you could hit with a pencil, or I could actually get it with my finger here.
There are three settings: High sensitivity, medium sensitivity and low sensitivity. High sensitivity is actually normal, that’s where the units are coming from the factory; that’s where they are, coming from here. If you are having issues, let’s first start by moving it down to medium sensitivity so it opens up the window just a little bit.
It’s very simple to do. You see the green light is very bright right now, we are going to press the button one time – it might be a little hard to see, but the light dims – now it is at a medium sensitivity.
If you are still having issues and you want to set it to a low sensitivity, click it one more time and you see the light almost extinguishes – it is now very, very dim.
So those are the three settings. If you press it again it goes back to high sensitivity – normal.
High Sensitivity – All green & bright.
Medium Sensitivity – Dim green
Low Sensitivity – Pretty much extinguished.
If you are still having any problems, please give us a call here at CoastTec, 410-521-1000. We are happy to help you.