Riken Keiki GD-3EC, Technical Manual

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5. Usage Instructions 5-1 Preparations for startup
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5
Usage Instructions
5-1 Preparations for startup
Carry out the following checks before connecting the power supply. Failure to perform these checks may result
in electric shock or damage to the product.

Check to confirm that the product is grounded.
 Check to confirm that external wiring is correctly connected.

Check to confirm that the power supply voltage is within the rated range.

External contacts may operate while adjustment is under way. Take precautions to prevent any external
effects from the contacts operating.
<How to read display examples>
LED display examples are shown as follows in this operating manual.
The display examples are for cases in which the detection target gas is combustible gas (display units: %LEL
lit).
PW A1 A2 F
PPM %LEL %
PW: POWER (Power lamp) lit (green) / flashing (green)
A1: ALM1 (Alarm lamp) lit (red)
A2: ALM2 (Alarm lamp) lit (red)
F: FAULT (Fault lamp) lit (yellow)
PPM: Units lamp lit (green)
%LEL: Units lamp lit (green)
%: Units lamp lit (green)