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Its sounds like you may a line interactive UPS. You can test function by unplugging the the UPS and seeing if your computer stays up. Make sure you have saved everything and have your computer in a state where it will not be negatively affected by a loss of power. These smaller UPS sytems...

Make sure you wire the battery modules properly. Not just polarity but there is a battery connection midway through the string that must done properly otherwise you will get an alarm and it will trip your system to bypass. Good luck Don

I would suggest an APC symmetra. They are scalable up to 16kva N+1. They also cn hold up to 4 strings of batteries in the main frame. Your 9kw is 11kva. This is the max current draw. Your constant load will will be less. The symmetra is a very popular UPS and is Modular. 90% of the parts...

Since it is an older UPS, I would waste your money or time replacing batteries. You can get a brand new one inexpensively. with smaller ups, only replace the batteries once then buy a new one. You'll save yourself alot of head aches. Good Luck

You do not need to completely power down the UPS. You can transfer the load to bypass and replace the batteries. If there is a battery breaker you should be able to open that breaker and replace them. Just make sure your voltage and polarity are correct. Good Luck

APC is the leader in smaller UPS systems. I would check them first. www.apcc.com Good Luck

APC tends to overcharge the batteries so watch bulging batteries. If you cannot remove the batteries due to bulging you need to drill out and replace the rivets. Good Luck

Using any refrigerator on a UPS is a bad Idea. I have had several calls about UPS' overloading due to A fridge or a laser printer being on the output. When the compressor turns on the inrush current shoots up and the UPS cant handle that much current rise. Good Luck

APC products tend to over charge the batteries. These type batteries last 3-5 years as an industry standard. Since APC overcharges the batteries i would replace them every 3 years. When you Charge a battery with a higher voltage the positive plate swell and make the cases bulge. When this...

The idea behind having dual power supplies on a server is to lessen the chance of failures. One input should be plugged into a properly sized UPS and the other should be plugged into a Utility Source. If either one fails the other should pick up the load. Your primary input should be plugged...

YOu would have to do this through you computer. The UPS regardless of what brand, does turn on one plug at a time. Its either on Inverter, bypass or off. UPS' are an all or nothing type of device. Good luck

HI, The E7 Error means that the PCB on the back of your Extended run cabinet in faulty. You can pull it out by loosen 4 screws on the back of the frame and reseat it. If the problem persists then the PCB requires replacement. The part # is SYXRCC. Good luck