1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
The commercial pressure shall be below 75% of the max graduation.
Do not impose a pressure beyond the allowable limit.
Avoid sudden pressure surge or drop.
If there is a risk of pulsation or impact pressure, install overpressure protection device like dampener or gauge protector.
Do not grease the operation parts in the pressure gauge.
The regular inspection shall be made once or twice in 6 months to check contact operation.
If the indication instrument makes a big error, remove it from the product for inspection.
It may have been caused by wear, corrosion, external shock, vibration, or shock of a part.
In this case, you must remove, adjust, or exchange the part.
The standard rated current shall follow 5. 1) but it may be different when the product is equipped with a special micro software.
Please, add some allowance to the rated current written in this product, considering the inrush current.
The micro switch contact resistance is destined to increase gradually as per the elapsed time.
Under minute load in Si environment, in particular, SiO2 which is accompanied by contact operation may deposit on the contact to increase
the contact resistance abruptly, so you must ventilate or move to a clean environment. When you use the product for control sequence input,
there is more possibility of contact disorder, so please use an AC 110/220V buffer relay between the contact and the sequence.
Before you open or close the cover for pressure gauge repair or inspection, be sure to shut off the power.
Malfunctioning of the switch may ignite the explosive gas in the gauge.
12. Maintenance and Operation
16
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