I have an eaton UPS 9355 and i would to know how can i find the solution of some alarme codes like #74 #119 etc

Without the exact model number, it is difficult to best assist you. Perhaps I suggest you give Eaton a call:
Toll Free: 1 800 843 9433
International: +1 919 871 1800
E-mail: [email protected]
You can view the manual here in the documentation tab:
Eaton 9355 UPS (if this is the model you are referring to).

do a self check

Over load fault

it looks like you have a faulty static switch

Cannot find an alarm code list.
This is a good manual- http://lit.powerware.com/ll_download.asp?file=164201626_9355_30_UPS_RevC-Rel.pdf.
Here is a source for documentation- http://powerquality.eaton.com/products-services/backup-power-ups/9355.aspx?cx=3&GUID=1FFC6155-2FD6-4350-967C-3B23A88CBC32.

Seems to have had a power glitch, is the system back to normal?

Bypass failure is the same as your input unless you have a dual input. You lost power and the UPS did not hold the load because the batteries are bad. Replace the batteries and you will be ok.

it indicates you have a polarity issue on your bypass feed. Most likely L1, L2 or L3 are mixed up (rotated). So you are using L2 as L1 or something like that. You should check (measure) the phase rotation/polarity.

Here is the documentation page for the Plus 36: http://powerquality.eaton.com/Products-services/legacy/plus-info.asp The Powerware Plus 36 can be serviced but it is a legacy product that is no longer manufactured. Eaton purchased Powerware and retained the service organization so there are lots of people trained to service this unit. For a replacement unit, you'd probably be looking at the Eaton 9355: www.eaton.com/9355 For Plus 36 service, here is the contact info: Toll Free: 1 800 843 9433
E-mail: [email protected]