UPS Probs

[Simon Queripel]

Hi,

I've just managed to get hold of an old Powerwise L900 UPS for my system at home, and found that when I plug it in and switch on, all I get is a continuous beep and no lights on the front. I have taken it back and got a second one but this is doing exactly the same.

The UPS's are old one's that my company used to use but have now gone for a full rack- mounted system and no-longer require them. we have no documentation, and no-one seems to know how to use them.....

Any idea's as it would be a real shame to throw them away.

P.S. this thread has been moved from Archived Desktops and Workstations Boards > general to Servers > general - HP Forums moderator

[Denver Osborn]

maybe they have a blown fuse that needs replaced?

[Jennifer Chiarelli]

If they were not in use for a while, the batteries may be dead. There should be a button to silence the alarm. Then try letting it charge the battery. If the battery is any good, that should help.

[Patrick Wessel]

Simon,
The PowerWise UPSs are OEMs from APC. Maybe you are able to find the 'original' APC model name and ask the same question in the "APS Forum" http://www.apcc.com/support/forums.cfm

[Koen_1]

Hello,

I also have a PowerWise L900 from HP, and i also have the same 'problem' as Mr. Simon Queripel.

Now, i have checked the battery's and all of the fuses.
The 4 battery's should deliver a voltage of 48V, i mesured 25,42 so i guess they are in poor condition.
Also i have checkt for an APC product identification number or any clue, but failed to find one.
I am going to charge all 4 of the battery's manualy, and hope that this will solve my problem... :-)

Koen.

[Tihomir]

The problem is that some electrolytic capacitors are dried because of time and high temperature. Try to replace all 10uF/50V capacitors around CPU ( there are 5 -6 of them ) This helps me to revive around 10 HP PowerWise L900 and L1250.

And check the bateries of course...

[osama_2]

I have the same problem on L900 Power wise UPS,
this UPS have problem with cooling ,,,
so if u do the following you will solve "hopfully":
must put something on the fan path,,
i do it by hand ''and wait some time the fan will stop,,,after 1 minute switch on the UPS.
And good luck