Riken Keiki GD-3EC, Technical Manual

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7. Maintenance 7-5 Setting environmental settings 1
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NOTE

Enabling the inhibit setting causes the LED display to alternate between [InHI.] and [0.0] (gas
concentration) when in detection mode.
7-5-2 Alarm setpoint setting
Set the gas alarm setpoints (first alarm setpoint and second alarm setpoint).
Set each alarm setpoint within the following range:
Alarm setpoint Alarm setpoint range
First alarm setpoint ([AL1]) 0 - 10 % of full scale (H-HH)
Second alarm setpoint
([AL2])
Combustible gas First alarm setpoint to 60 % of full scale (H-HH)
Other gases First alarm setpoint to full scale (H-HH)
1 Press the ▲ or ▼ key in maintenance mode to select [2-4],
then press the SET key.
2 Press the ▲ or ▼ key to select [2-4.1], then press the SET
key.
3 Press the ▲ or ▼ key to select [AL1] or [AL2], then press
the SET key.
To set the first alarm setpoint, select [AL1]. To set the second
alarm setpoint, select [AL2].
4 Press the ▲ or ▼ key to set the alarm setpoint, then press
the SET key.
The display returns to [AL1] or [AL2].
NOTE
 The alarm setpoints can be checked by displaying the settings in user mode. (Refer to ‘5-7-1 Checking
alarm setpoints’.)