Important Notices On Safety; Danger Cases; Warning Cases - RKI Instruments SD-1GH Operating Manual

Important Notices on Safety

2-1. Danger Cases

DANGER
About explosion-proof
• The window plate material is a polycarbonate resin. Do not use organic solvents and alkali types
(liquid or vapor) as they may change the color or shape of the window plate.
• Do not open the lid when applying current.
• Do not attempt to repair the detector.
• For the lid, use hexagon socket head bolts specified by RKI
• Do not apply a strong force or shock to the window plate. The explosion-proof performances may
be deteriorated due to damages. The explosion protection conditions for the detector is "low
(2J)" possibility of mechanical damage.
• Contact RKI if the transparent window has a crack or the explosion-proof joint surface is
abnormal, or the clamping screw or bolt is changed, lost etc.
• Do not repair the explosion-proof joint surface.
• Be careful not to hit the window plate with a sharp object.

2-2. Warning Cases

WARNING
Power supply
Before turning on the detector, be sure the voltage is properly applied. Using an unstable power
supply may cause malfunctions.
Need of grounding circuit
Do not cut the grounding circuit or disconnect the wire from the grounding terminal.
Defects in protective functions
Before starting the detector, check the protective functions (such as protective grounding) for
defects. Do not start the detector if protective function defects are found.
External connection
Before connecting the detector to an external control circuit, securely connect it to a protective
grounding circuit.
Zero adjustment in the atmosphere
Check the atmosphere for freshness before performing a zero adjustment. If gases exist in the
atmosphere, the adjustment cannot be performed properly.
Response to gas alarm
A gas alarm condition indicates that there are extreme dangers. Take proper actions based on your
judgment.
SD-1GH
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