New Cosmos Electric KS-7D, Instruction Manual

Page: 21 / 40

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7-4-5. Alarm Test [Mode 4]
▪
When an alarm test is executed, the alarm test value (concentration) will be displayed on the LCD,
and corresponding analog output and alarm outputs (external relay contacts, audio alarm, alarm
lights) will activate. This will allow the user to test the alarm operation.
1) Enter the User mode. Press the
▲
/
▼
button
to select
“4”. (each press of the button is
followed by one beep)
“AL T” and “4” will be alternately displayed.
2) Press the maintenance button. (one beep)
The current alarm test value (ppm) will be
displayed.
3) To change the alarm test value (ppm), press
the
▲
/
▼
button.
4) Press and hold the maintenance button for 3
seconds to start an alarm test. (two beeps)
5) To cancel the ongoing alarm test, press the RESET
button. (one beep) The current alarm test value (ppm)
will be displayed.
(Note: If the RESET button is pressed and held, the
alarm will not be cancelled and the unit will return to
normal operation mode.)
6) To change the test value, repeat steps 3) to 5).
7) Press and hold the RESET button for 5 seconds to
return to normal operation mode.
If the unit is in the Maintenance mode, the external relay contacts and audio
alarm are disabled (alarm lights and analog outputs are active).
NOTE
An alarm test activates the external relay contacts of the detector. If the detector
’s external
relay contacts are used to activate external devices
’ interlocks, etc., notify the people
concerned then release the interlocks of the external devices, as needed in order to prevent
a possible activation of the external relay contacts.
CAUTION
To increase/decrease the test value,
press the
▲
/
▼
button. Holding the
button continuously
increases/decreases the value.
NOTE
(Ex. Test value is
currently set to 75ppm)
(Ex. Test value is
changed to 150ppm)