Bacharach 3015-4286 Installation & Operating Instructions Manual

Bacharach 3015-4286 Installation & Operating Instructions Manual Manual pdf 22 page image

18 Instruction 3015-4286Gas AlarmsOverviewIf the ammonia gas ppm level in the area being monitored exceeds its preset Leak, Spill, or Evacuate Alarmlevel (Page 16), the AGM-SZ will detect this alarm condition and turn ON the front panel ALARM light.Additionally, an external alarm device may activate and the monitor’s internal audible alarm may sound if thosefeatures have been enabled (Pages 10 & 16).Clearing / Silencing a Gas AlarmOnce the gas-alarm circuit has been triggered all alarm indicators remain turned ON, even after the detectedgas level returns to normal. Press the SILENCE button to clear all gas-alarm indicators after the cause of thealarm has been cleared and the detected gas level has dropped below all alarm levels.Pressing the SILENCE button while a gas-alarm condition still exists causes the internal audible alarm and allexternal alarm devices that are connected to the alarm relays to turn OFF for a period of time as set by theSILENCE function (Page 17). The front panel ALARM light remains ON, however, as an indication that analarm condition still exists, but will automatically turn OFF once the gas level returns to normal. The alarm circuitwill reactivate at the end of the silence period if the detected gas level is still above an alarm level.Viewing the Gas Alarm LogFrom the Data Display screen, use the Keypad buttons to place the arrow (>) on the display next to theALARMS function. Then press ENTER to display the alarm log.The alarm log shows the type of alarm (LEAK, SPILL, or EVAC), plus the date and time it occurred. If CLEAR isdisplayed, this indicates that an alarm was acknowledged at the date and time shown.Immediately after selecting the ALARM function, the most recent alarm event is displayed. In the examplebelow, record #03 shows that a Spill Alarm occurred on 11/10/03 at 15:06. Note that if more than 30 alarmevents have occurred, then the newest event overwrites the oldest.Note that the Alarm Log can be cleared as described in Section Clearing the Stored PPM Log, Alarm & FaultData (Page 20).System FaultsOverviewIf a system malfunction occurs, the AGM-SZ will detect the problem and turn ON the front panel SYSTEMFAULT light. Additionally, an external alarm device may activate and the monitor’s internal audible alarm maysound if those features have been enabled (Pages 10 & 16).Clearing / Silencing a Fault AlarmThe SYSTEM FAULT light and all other fault indicators will automatically turn OFF after the cause of the faulthas been eliminated.Pressing the SILENCE button while a fault condition still exists causes the internal audible alarm and theexternal alarm device that is connected to the fault relay to turn OFF for a period of time as set by the SILENCEfunction (Page 17). The front panel SYSTEM FAULT light remains ON, however, as a reminder that a faultcondition still exists. The alarm circuit will reactivate at the end of the silence period if the cause of the fault hasnot been corrected. The SYSTEM FAULT light will automatically turn OFF once the fault has been cleared.#03 SPILL @11/10/03 15:06