GDS GasVac LG-1, Руководство по эксплуатации

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7
HOLDING THE DISPLAY
As the display cycles through the active sensors sequentially, it may be required to stop on a
particular channel for maintenance.
This can be achieved using the + (4) button on the front panel which when pressed will hold the
current sample for 999 seconds. A countdown is displayed on the LCD showing that hold is in
progress. At the end of this time normal display sequencing will resume.
The gas values displayed on the LCD during hold are still the current live readings from the sensors.
Hold can be removed at any time by pressing the + (4) button for a second time.
As the sequence of display continues it is sometimes required for maintenance to choose another
sensor for display and this can be achieved using
UP (1) .
This button when pressed terminates the current display it moves to the next displayed channel and
if pressed continuously, this button will step through all available sensors When the desired channel
is reached and the button released, press
+ (4 ) to hold this display for 999 seconds. Pressing + (4)
will release the system back to normal.
TESTING THE LEDS
(7)
AND RELAYS
(8)
To test all LED’s and beep the buzzer, use menu number 7 and press SELECT (3) to make all LED’s
illuminate in dimmed mode to see if they are functioning. At the end of the test, the buzzer beeps
twice to confirm its operation.
When a remote relay board is present in the system, each of the 64 relays can be energised or de-
energised using USER menu number 8.
When selected, use the
UP (1) and DOWN (5) buttons to choose a relay and then the + (4) and
– (2) buttons to energise or de-energise respectively.
When finished, use the SELECT (3) button to return to the USER menu.
INHIBITING A SENSOR
(14/3)
During maintenance, it is sometimes required to inhibit the alarms on a particular sensor. A front
panel LED will illuminate and inhibit relay will operate if any sensor or the system is inhibited (see
appendix 1 numbers 3 and 14.
Pressing
SELECT (3) moves the selection to the CAN networked sensors and the buttons are used in
the same way.
Pressing
SELECT (3) moves the selection to inhibit system for 30 mins. Any alarm or fault will be
inhibited. All relays will go back to their normal state. Press (1) to activate 30 mins maximum or
press (5) to deactivate. 30 min timer can be viewed when active on main screen.