On-line UPS - how to check it is faulty or not without batteries

[dvas]

Hi,

I got a True on-line UPS that looks like being in superb condition, but it is without batteries. I managed to locate the attached document (I removed some non-relevant pages due to doc size) and I found out it runs from 8x 12VDC batteries. Now, I don't have those batteries laying around just for test and I don't know how to test this beast without them.
If the UPS is OK, I will be gladly purchase them, but not just for test.

Any help is appreciated to help me do the basic troubleshooting if it is working or not.

Systel ON-LINE PM1500 UPS

Needless to say, when connected to mains, it looks dead.

thanks,
Sasha

[SeanB]

No obvious blown parts, just plug it in and see if it complains about battery fault. If so then it is likely to be working, and you can get 8 7Ah SLA batteries and test it.

[dvas]

thanks Sean for quick reply, but when plugged in, nothing is happening... dead.... no LEDs, no beeps,.....

[SeanB]

So it needs the battery to bootstrap then. You need a power supply that can deliver the required 90VDC it needs then it should start up and complain with no mains connected. If not then it is spare parts.

[dvas]

that is my problem. how to get 96VDC supply.
another option was that I scrap from different UPSs around some batteries and to ask friends for some more.

[dr.diesel]

Variac, rectifier and a few caps?

[SeanB]

And hot gloves.......

[dvas]

possible. I will see what can i easily get....

[dr.diesel]

possible. I will see what can i easily get....

Do be careful, DC is much more dangerous, especially if you got across both the positive and negative leads.