Riken Keiki GD-1DOX-AS, Operating Manual

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5 How to Operate 5-1. Preparation for start-up
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5
How to Operate
5-1. Preparation for start-up
Before connecting a power supply, read and understand the following precautions. Ignoring these
precautions may cause an electric shock or damage the detector.
•
Check that the detector is installed properly.
•
Connect the detector to a grounding circuit.
• Check that the wiring is connected to external device properly.
• Check that the power supply voltage is compliant with the specifications.
•
Check that there is no clogging or leak in the connected tube. (If the connected tube is clogged,
pressure is applied to the sensor, causing errors and malfunctions.)
• Check that the filter is attached properly. (The filter is specified based on the gas to be detected.)
5-2. Basic operating procedures
Before supplying power to the detector, check that the preparations described in "5-1. Preparation for
start-up" are completed. The detector lacks a power switch. Analog output from the oxygen sensor is
sent directly to the indicator/alarm unit via the cable connected without signal conversion. Assuming the
cables are correctly connected, the detector will start operating as soon as the indicator/alarm unit power
is turned on. Turn on the indicator/alarm unit power and check that it functions normally with reference to
the operating manual of the indicator/alarm unit.
Span adjustment must be performed when a detector is first installed. Indicated oxygen concentrations
may be incorrect until this adjustment has been made.
CAUTION
• When installing for the first time, adjust as described in "6-2. Calibration method" to ensure the
indicator/alarm unit displays accurate oxygen concentrations. Adjust the indicator/alarm unit.
The detector itself cannot be adjusted. For information on adjusting the indicator/alarm unit,
refer to the indicator/alarm unit operating manual.