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User Manual

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devices to the programmable outlets and critical devices to the general

outlets. During power failure, you may extend the backup time to critical

devices by enabling the programmable outlets.

1. With the UPS on-line switch on the load devices one by one. The

LCD display panel will display the load level by 0-25%, 26-50%,

51-75% and 76-100%.

2. If the UPS is overloaded the audible alarm will beep twice every

second and the LCD display panel will display “OVERLOAD”.

3. When the UPS is overloaded remove some load immediately.

4. When the UPS is in on-line mode, and the overload time exceeds

the duration listed in the

specification,

the UPS

will

automatically

transfer to bypass mode. At this time, if the bypass

is enabled, the UPS will supply power to the load via bypass. If

the bypass function is disabled, or the input voltage is not within

the bypass acceptable range, the UPS will cutoff power to the

load. After the overload is removed the UPS will return to on-line

mode.

5. After repetitive overloads, the UPS will be locked in bypass mode.

Remove excess loads from the UPS output. Then restart the UPS.

5.4 The UPS in Battery Mode

1. When the input voltage is not within the acceptable range or there

is a mains failure the UPS will enter battery mode. The batteries

will continue to provide an uninterrupted supply of energy to the

load.

2. When the UPS is in battery mode the LCD display panel will

display the battery level by 0-25%, 26-50%, 51-75% and 76-100%

and the battery voltage. The audible alarm will beep according to

the battery capacity. Normally, the audible alarm will beep once

every four seconds. When the battery voltage drops to low battery

voltage level, the audible alarm will beep once per second and the

UPS will automatically shut down. At this time, users could switch

off any non-critical loads to disable the shutdown alarm and pro-

long the backup time. If no more load can be removed at this time,

Ametek Surgex UPS-17202-53R User Manual

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