Apc DP300E User Manual download pdf (Page 25)

25User Guide Silcon DP300E Series 480V 120-160kVA

7OA0003 US rev. 03

Alarms

6.0 Alarms - What To Do

6.1 General

Alarms are indicated by the red LED (above the upper left corner of the keyboard)

and by a 30 secs. acoustic signal. An alarm is registered in an alarm stack as long as

it is present, and logged in the same succession as they arise.

6.2 The alarm stack

The alarm stack can be displayed by:

Action Description

1. Press

Access to the alarm stack

2. Press

or Scroll up or down through the alarm stack messages.

Last message is “No (further) alarm”.

3. Press

Exits the alarm stack. If not operated the system

will exit the alarm stack automatically after 30 seconds.

6.3 Alarm messages

The alarm messages are used together with the events logger as part of a diagnostic

system for the UPS service specialist.

Before calling for assistance you may take one or more of the following actions.

1. “Battery defective” means no back-up capacity any longer. Call for assistance.

“Battery weak” means reduced back-up capacity. Reset the battery monitor

alarm signal according to section 4.2.1 and start a battery monitor test according

to section 8.5. Record the obtained back-up time and reset the new alarm from

the battery monitor. Let the UPS recharge the battery for at least 16 hours, and

with the same load as before start a second battery monitor test. If this results

in improved back-up time, continue with further capacity tests until none or

insignificant improvements take place. Above might “wake-up” the battery –

else call for assistance.

2. “Battery operation”: Check the local utility power supply. One or more fuses may

be blown or somebody could by accident have switched off the supply.

3. “Fan fault”: Check if the cooling air intake on your UPS has been blocked.

4. “Overload”: Check display for load on the UPS - the max. output capacity may be

exceeded.

5. If there is no output voltage from the UPS - the utility supply is present and an

attempt to restart gives no result – bypass the UPS as described in section 2.6 or

2.7 if external service bypass switch is present.

IF THE UPS IS SOUNDING AN ALARM. To silence the audible alarm,

press the silence alarm key shown at the right. If you do not silence the

alarm, it will automatically silence itself after 30 seconds. Silencing the

audible alarm does not correct the problem that caused the alarm.

NOTE:

A battery monitor test can not

be performed unless the battery

is fully charged.

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Apc DP300E User Manual Page 25

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