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INTRODUCTION

Congratulations on your purchase of a MINUTEMAN "AT" Series Synchroni zed Sinewave
Uninterruptible Power Supply (UPS). Each unit is designed to provide s uperior, total power
protection for personal computers, telephone systems and any other sensit ive or critical electronic
equipment against all commercial power anomalies. These models pro vide light and audible
alarm indications, so the user will know the status of both commerc ial power and the
MINUTEMAN "AT" Power Supply at all times. Each unit is designed t o be maintenance free and
to provide years of excellent service. Other features of the "AT" Series include:
Light weight and small footprint
Quiet operation
High non-linear current capability
(Crest Ratio = 3:1)
Computer grade sinewave output
LAN Communications Port

RECEIVING INSPECTION

Remove and inspect the unit for shipping damage. If damage is found, im mediately notify the
carrier and your dealer. If no damage is found save both the shipping cont ainer and the packing
foam in case the unit may later need to be returned to the factory or shippe d to another location.

WARRANTY REGISTRATION

Locate your warranty registration card in the back of this manual and c omplete and return within
10 days of receipt of the unit(s) to register your warranty. Failure to regis ter your warranty
renders it non-valid.
IMPORTANT SAFETY INSTRUCTIONS

(Save these instructions)

Units in this manual are intended for installation in a temperature-contr olled, indoor area
free of conductive contaminants.
Read all instructions carefully before operating the UPS. Al l operating instructions should
be followed and all cautions must be adhered to.
CAUTION -- UPS units use batteries for generation of AC voltages, so output receptacles
may be electrically hot even when the unit is not connected to comm ercial power.
Trained service personnel should perform all repairs, since an electrical shock hazard
exists.
CAUTION -- Do not remove the cover, there are no user serviceable parts inside.
CAUTION -- The 3-wire plug supplied with the unit provides earth ground for the UPS
unit chassis to prevent electrical shock. Plug the UPS unit into a 3-wir e grounding type,
commercial receptacle with grounding conductor connected to earth ground at the
service equipment. Removal of the ground pin from the plug or use of a 3-wir e-to-2-wire
adapter will defeat this safety feature and may result in a shock hazard. Additionally, if