Installation manual

Section 300: AC Installation

The UPS must be installed by a qualified electrician.

301 Removing the Covers and Knock Outs

❑ 1. Remove the UPS side covers. To do this, remove the seven screws at the sides and top of the

UPS. Then, lift each cover straight up and off.

❑ 2. At the UPS back panel, remove knock outs for AC Input and AC Output.

❑ 3. Remove the lower cover from the external bypass switch (if applicable).

❑ 4. At the external bypass switch, remove knock outs for AC Line Input, AC to UPS Input, AC

from UPS Output, and AC to Loads.

CAUTION!

A. All UPS units contain hazardous AC and DC voltages. Because of these voltages, a qualified

electrician must install the UPS and AC line service. The electrician must install AC line

according to local and national codes.

B. Before installing, maintaining, or servicing the UPS, always remove or shut off all sources of

AC and DC power and shut off the UPS. Disconnect AC line input at the service panel, turn the

main DC switch on the battery pack(s) to “OFF” (if you have external batteries), and turn the

UPS key switch to “OFF” to make sure it will not supply output voltage.

C. Whenever AC and/or DC voltage is applied, there will be AC voltage at the UPS terminals. The

UPS can supply power from AC line or from its batteries. To avoid equipment damage or

personal injury, always assume that there may be voltage at the UPS terminals.

D. Before you install the external bypass switch, make sure that both the UPS Bypass Switch and

the AC Line Disconnect Switch are turned to “OFF.”

E. To reduce the risk of fire or electric shock, install the UPS and the batteries in a temperature-con-

trolled and humidity-controlled indoor area free of conductive contaminants. See Section 103 for

operating environment specifications.

CAUTION!

To prevent electrical shock or damage to your equipment, make sure the key switch inside the front

door of the UPS is “OFF” before you remove the UPS cover. The circuit breaker or AC disconnect

switch must be turned off at the AC input service panel.