Kentec Electronics Sigma XT K11031F2 Operation And Maintenance Manual

Kentec Electronics Sigma XT K11031F2 Operation And Maintenance Manual Manual pdf 23 page image

Product Manuals/Man-1088_Sigma XT_26 Page 23 of 40Note: Indication of a mains failure may be delayed by 30 minutes by setting configuration option2d15.10 System faultThe System Fault LED will light if the configuration memory has not been set or has becomecorrupt.15.11 General faultWill illuminate under any fault condition.This LED will also light if the configuration option jumper (see figure 18) has been left in theaccess level 3 position and the enable controls key has been removed from the front panel.15.12 Lamp testAll LED indicators can be tested at any time by pressing the Lamp Test button. The EnableControl key does not need to be inserted to test the indicators.The buzzer can be silenced at any time by pressing the Buzzer Silence button. The enable keydoes not need to be inserted to silence the buzzer.15.13 Hold conditionActivation of the hold input at the connections inside the panel or at a remotely mounted statusunit will cause the Hold Activated indicator to light and the buzzer to sound.If the control panel is in the 2 nd stage alarm condition (i.e. it is in Automatic mode anddetection circuits are activated or it is in either Automatic or Manual mode and amanual release input is operated) then the extinguishant release sequence shall behalted and the pulsing, 2 nd stage sounders shall change to 1 second on, 2 seconds off.Release of the Hold input shall re-start the countdown release timer from maximum.15.14 Released conditionThe released pressure switch input is connected to a pressure switch mounted on theextinguishant cylinder which operates when the extinguishant has been released. This will activatethe released indicator on the control panel. If the extinguishant has been released by mechanicalmeans i.e. the control panel is not in the activated condition, operation of the released pressureswitch input will cause the second stage sounders and second stage relay to operate.15.15 Low pressure switchThe low pressure switch input on the panel is connected to a pressure switch on the extinguishantcylinder which will operate if the pressure in the cylinder falls below a set point. This will happenafter the extinguishant has been released but may happen before release through a leak. Whenthis input is operated the Low Pressure Indicator will light, The Fault Relay will operate and theflooding zone fault indicator will light and the buzzer will sound.The pressure switch input can be configured as normally open or normally closed via configurationoption C2C (software version 1.2 and above only).15.16 Test modeFire alarm systems must be tested regularly to ensure that they are functioning correctly. Thesystem can be tested single handed by using a test mode. When in test mode, activation of a firealarm will be automatically reset after a few seconds to eliminate the need to return to the controlpanel to reset after every activation.Test mode is entered in a similar way to disablements. With the Enable Control key inserted,press the Mode button until “t” appears in the first of the seven segment displays. Then press theSelect button until the required zone number appears. Pressing the Enter button will cause theTest and Zone Fault LEDs to illuminate indicating the zones which are in test mode.Disablements and zone tests are cleared by repeating the sequence that is used to select them,i.e. the "db" function (for example) toggles between sounders disabled and sounders enabled.