2 Important Notices on Safety
2-2. Warning cases
RP-D58 Series
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2-2. Warning cases
WARNING
Power supply
Before turning on the pump unit, always check that the voltage is properly applied. Do not use an
unstable power supply because it 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 pump unit, check the protective functions for defects. When seeming defects are
found in the protective functions, such as protective grounding, do not start the pump unit.
External connection
Before connecting the pump unit to the external control circuit, securely connect it to a protective
grounding circuit.
Do not use the pump unit in the presence of silicone or sulfides.
The flow sensor is made of metal porous sintered alloy permeated with an oxidation catalyst.
If silicon or sulfide compounds are accumulated on the surface of porous sintered alloy, the area of
the gas sensing part becomes smaller, which may result in serious deterioration of its sensitivity.
