RKI Instruments GD-70D Series - Manual (Page 30)

3 How to Operate 3-1. Preparation for start-up
GD-70D - 30 -
3
How to Operate
3-1. 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.
• Connect the detector to a grounding circuit.
• Check whether the wiring is connected to external circuit properly.
• Check whether the power supply voltage is compliant with the specification.
• Because the external contact may be activated during the adjustment, take measures to prevent an
activated contact from having influences on external circuits.
• Verify that there is no clogging or leak in the connected tube. (If the connected tube is clogged, pressure is
applied to the sensor unit, causing errors and malfunctions. Please note that the reading is fluctuated in the
galvanic cell type, which may result in a false alarm.)
• Verify that the filter is attached correctly. (The filter is specified based on the gas to be detected.)
3-2. How to start the detector
• Before turning on the power switch, check whether the detector
is installed properly.
• The power switch is protected by a cover to prevent access to it
in a normal time. To turn ON/OFF the power switch, rotate the
switch cover. (Return the switch cover to the original position
after the switching is completed.)
• Turn ON the power switch.
• After the detector completes the start-up, it enters the detection
mode.
Power switch
OFF ON
Slide
When the switch cover
is closed
When the switch cover
is open