Tor1 UPS Maintenance - 04-Nov-2020 - 10:30am - 4:00pm Eastern Time

[porcupine]

Hi Folks,

Please be advised of the following maintenance window:

Maintenance Window: Wednesday November 4th, 2020 10:30am - 4:00pm Eastern Time
Affected Device: UPS-A.tor1
Affected Customers: Tor1 Dedicated/Colocated customers with power fed from UPS-A.tor1
Service Impacting: No - Precautionary Notice Only

Details: We will be replacing the UPS batteries powering UPS-A.tor1 with new batteries. The batteries in this UPS plant have been in service for over 6 years. While the current batteries are rated for a 10 year service life, recent tests have demonstrated increasing impedance levels, suggesting the current batteries are reaching the end of their useful service life, and should be replaced accordingly.

While we do not expect this to be a service impacting maintenance, the UPS unit will be operating on battery bypass, and should utility power fail at this time, there will be an interruption in services as the Automatic Transfer Switch (ATS) switches power from utility to generator. As such, this should be considered a precautionary maintenance window. Batteries will be replaced on a shelf by shelf basis, and efforts will be made to minimize time on bypass as one would reasonably expect.

UPS-B.tor1 will not be impacted by this maintenance, thus customers with A/B power feeds will be fully protected throughout this maintenance window, as will customers fed exclusively from UPS-B.tor1.

Regards,