Ohio Medical Area Installation And Maintenance Manual
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Contents
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Ohio Medical Corporation., 1111 Lakeside Drive, Gurnee, IL 60031-4099 (800/448-0770) www.ohiomedical.comMedical Gas Alarm Manual ■ 255098 (Rev.8) 07/08Page 82.2 Annunciator PanelThe Annunciator Panel is the main processing board for the Medical Gas Alarm System. TheAnnunciator Panel accepts information by two different means. For gas pressure, the inputsignal comes from the Sensor Module and goes to the annunciator to evaluate the pressurebeing observed. This information is then transmitted directly to the corresponding Area AlarmModule where the pressure or vacuum is displayed via the ribbon cable. For sourceequipment, a condition is relayed to a point on a master alarm module first and thentransferred to the Annunciator via the ribbon cable. In normal operation, the Annunciatorcontinuously monitors all pressure, vacuum, and source equipment for alarm conditions.When an alarm condition is detected, an audible alarm (approximately 80 decibels measuredat 3 feet) will sound and the appropriate red LED will illuminate from the corresponding Areaor Master Alarm Module. The audible alarm will sound under one of the four conditions listedbelow.■ When the pressure input increases above a specified high set-point□ When the pressure or vacuum decreases below a specified low set-point■ When an alarm condition is detected on the Master Alarm Module■ When one of the Sensor Module’s wiring has become disconnectedThere are two momentary push buttons on the Annunciator Panel, which are labeled as“TEST” and “ALARM SILENCE/RESET”. To stop the audible alarm from sounding, press the“ALARM SILENCE” button. However, the alarm will re-sound again after the specified repeattime has elapsed unless the alarm condition has been cleared. When a new alarm conditionis detected from another alarm panel, the audible alarm will sound again. Each time the“Alarm Silence” button is pressed the alarm repeat time will reset. To review if the alarm’sdisplays and audible alarm are in working order, press the “TEST” button for approximately 3seconds. While testing, all display segments and independent LED’s will be illuminated andthe audible alarm will sound.The Annunciator has a relay for wiring an external buzzer to a remote location. This relayenergizes the external buzzer when the audible alarm sounds.A communications port is provided on the Annunciator Panel that allows for integration with aLonWorks® network system allowing the medical gas alarm system to communicate with aLonWorks® capable building management system. |
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