GDS 301, Руководство по эксплуатации

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5
Operation
On power up the green power indicator will flash for 60 seconds indicating that the sensors
are stabilising, during this period all alarms are held in the off position.
After the stabilisation period any gas detected by the sensor will be indicated on the digital
display with any alarm level being exceeded resulting in the sounder and appropriate red
LED and relay activating.
Pressing the reset pad will result in the sounder being silenced, alarm indicators and relays
may only be reset when the indicated gas level has reduced to below that of the alarm trip
points.
Testing
The unit may be electrically tested by pressing the test pad for 15 seconds after which the
gas alarm indicators and sounder will activate intermittently, maintaining pressure on the
pad for a further 15 seconds will result in constant sounder/indicators and activation of
alarm relays.
During servicing alarm relays may be isolated by pressing the reset pad for 15 seconds
after which the fault indicator will come on indicating inhibit mode, to remove inhibit press
the reset pad for 15 seconds the fault indicator will turn off.
To ensure that the system responds correctly to the presence of gas, the sensor should be
gas tested by injecting an appropriate test gas sample into the system at point (A) see detail
on page 8). It is advisable to carry out this test at six monthly intervals (Minimum).
Operational notes
Water Drain: - where a catch pot is fitted water may collect within the bowl, this will be more
noticeable where hot samples are being drawn along the sample line and condensing along
its path - water should not be allowed into the system - damage to the sensor will occur.
Sensor
Sample
Pump
Power
Board
Flow
Monitor
Particulate
Filter
standard layout