2T-HA10F-CD 3.6 kVA Uninterruptible Power Sys Oper Info

This document is the "Operating Information" manual for the 2T-HA10F-CD 3.6 kVA Uninterruptible Power System (UPS), produced by Digital Equipment Corporation and revised in August 1992.

The manual provides comprehensive information for users, covering:

1. Introduction: A general description of the UPS, explaining its function in providing conditioned and uninterrupted power, protecting against various AC power problems (e.g., blackouts, surges). It details the bidirectional converter and battery backup (six 12V lead-acid batteries, providing approximately 10 minutes of backup at full load), as well as Digital Equipment Corporation's modifications, which include adding six 240V output receptacles and related wiring.
2. Specifications: Detailed electrical (input/output voltage, current, frequency, distortion), environmental (operating temperature, humidity, noise), and physical dimensions and weights for both the UPS and battery units.
3. Operation: Descriptions of the UPS controls (AC input circuit breaker, battery circuit breaker, alarm silence button) and indicators (status lights for Normal, Bypass, On Battery, Fault, Low Battery, and an audio alarm). It also covers output distribution through NEMA 6-15R receptacles and the emergency shutdown plug, providing step-by-step procedures for normal power-up/power-down and manual transfer between normal and bypass modes.
4. Removal and Replacement: Procedures primarily for service personnel due to high voltage and weight.
5. Maintenance: Guidelines for preventive maintenance (e.g., cleaning), troubleshooting using status lights (recommending Digital Services for faults), periodic battery checks (load test every 6 months after 3 years, aiming for at least 7 minutes of backup), and storage procedures (fully charging, turning off, and recharging every 90 days).

Throughout the document, warnings are emphasized regarding high voltages and the fact that the unit contains no user-serviceable parts, advising that only qualified personnel should access internal components for repair or troubleshooting.