Intervention on Piller and UPS


Subject: Intervention on Piller and UPS
Maximiliano.Sioli@lngs.infn.it
Date: Mon Feb 28 2000 - 08:23:55 EST


        Salve,

        next Wednesday, Mar. 1st, there is a scheduled intervention
        for the maintenance of the Piller and UPS.

        A power interruption will be simulated to identify broken
        batteries of the Piller; in any case, the continuity of electrical
        power is guaranteed and it is not required a detector shutdown.
        This operation will take about 10 minutes.
        
        A similar intervention will be done on the UPS near the counting
        room building to check possible malfunctions, as
        signalled during the last days.
        In this case, VXMACA/B shutdown is required and the ACQ will be
        performed on the backup system, supplied from the other power line.
        The UPS must be completely discharged, so the duration of this
        operation will depend on the electric load used.

        Best regards,
                                Max Sioli



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