Specifications

FS-250 Installation and Operation Manual

MAINTENANCE

GENERAL

Device sensitivity may be read out and alarm thresholds controlled on a per-point basis, as

well as setting overall percent obscuration and day/night variations. Individual points may

also be disabled for service.

To perform these functions on the unit, enter the 4-digit maintenance password into the

control panel or LCD annunciator. When the menu is displayed, select the desired function

or sub-function and press the appropriate operating button. When the function is complete,

the menu will provide a command for exiting the maintenance mode.

Note that any abnormal condition, such as disabled points, will report a trouble.

Confirmation of disabling or re-enabling a point is required to complete the action, but

acknowledgment of the trouble is not required, since it results from operator action.

Activation of an alarm condition or a timeout after no button activity terminates Maintenance

mode.

The system may automatically scan the operating points and report to a printer, facilitating

NFPA 72 test requirements. The control panel may perform this scan once a day, with the

time selectable by the user.

To initiate a non-programmed automatic test cycle, enter the 4-digit maintenance password

into the control panel or LCD annunciator. When the menu is displayed, select Auto-test

and press the associated switch. The Auto-test cycle will be completed and the control

panel will return to normal. Results will be displayed on the display (anomalies only) or the

printer (full data) according to the selected mode.

• The system will automatically monitor drift of quiescent detector output levels and report

a maintenance alert if a preset level is passed, or if a detector drifts too quickly. This

maintenance alert is annunciated as a trouble.

• The system may be programmed to report the number of times the alarm verify function

is initiated by device, time of day, and/or day of week, allowing location of environmental

problems. This datum is available on the display as described in paragraph 1 above.

• The system may be programmed to alert the operator when scheduled maintenance is

required.

• A 2000 event history is maintained, with all events available for chronological review at

the operator level. This history may be cleared only with the Maintenance Level Code.

For details on included data and use of the history, see operation instructions.

To clear history when data has been read out and restoration of memory space is desired,

activate maintenance mode as described above and follow menu instructions for clearing

the event history.

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