PISCO RVV Series, Manual, Page: 7 / 22

Detailed Safety Instructions
Before using PISCO products, be sure to read “Safety Instructions” and “Safety Instruction
Manual” and “Common Safety Instructions for Vacuum Series”.
Warning
1. Do not use a ø30mm pressure gauge for positive pressure. When positive pressure within the operating
range is supplied, use a Digital pressure sensor with large display. Excessive positive pressure may
cause damage to the product.
2. Before operating the product, thoroughly read users manual of Small Vacuum Regulator Series and
vacuum source side product. Carry out a trial operation.
Caution
1. Avoid an excessive load or impact on display, sensor and gauge port. Otherwise, there is a possibility of
damaging the product or dropping the indication accuracy.
2. Make sure to fix the product properly. Use a spanner to tighten a hexagonal-column (hex. 27mm) for
thread type. Do not tighten other place except the hexagonal-column, otherwise, it may cause damage to
the product.
3. When a gauge or a pipe is attached to gauge port, tighten a hexagonal-column (hex. 12mm) on the
port with a spanner. Refer to the following recommended tightening torque for tightening M5x8 port.
Otherwise, there is a possibility of damaging the product or dropping the indication accuracy.
■
Table: Recommended tightening torque
Thread size Tightening torque
M5×0.8 1.0 ~ 1.5N·m
4. If there is a possibility of sucking dusts or granule, be sure to place a filter on adjusting pressure side (work-
piece side) of Small Vacuum Regulator. Suction of these foreign substances may cause malfunctions.
5. Do not block the leak port and the relief port to maintain a stable secondary pressure.
6. When applying a positive pressure to Small Vacuum Regulator, a small amount of air comes out from the
leak port. Be careful when it is operated in cleanroom.
7. When applying a blow-off air, consider the air released from the leak port to set the blow-off air amount.
8. Do not use a pressure gauge in a large pressure fluctuation (high-cycle).
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