14
PBT3N: Air Supply Piping/Operation
1. Use only clean air, which has been run through an air trap, filter, oiler, etc.
2. Make sure there is no foreign matter, particularly dirt or sealing tape, in the
pneumatic actuator.
3. The table below shows the relationship between the air supply and valve
opening/closing.
Port: A
Port: B
Valve
Supply
Exhaust
Open
Exhaust
Supply
Closed
4. When checking operation of the pneumatic actuator before installation, keep
fingers well clear of the bypass blowdown valve section.
Air Supply to Port A (air-to-open)
Air supply pressure: 0.3 – 1.0 MPaG
Air Supply to Port B (air-to-close)
Air supply pressure: 0.3 – 1.0 MPaG
Open/Closed Indicator
5. Carry out an operational check of the actuator under no-load conditions (no
pressure) before actual operation to ensure that the air is supplied properly.
The “Open/Closed” Indicator located in the lower part of the actuator indicates
whether the valve is opened/closed.
6. Make sure that the integrated ball valve is closed at start-up, causing the product to
function as a trap.
The state of the integrated ball valve can be confirmed using the “open/closed”
indicator. Open the inlet and outlet valves slowly and check to make sure that the
product functions properly. If there is a problem, determine the cause by using the
“Troubleshooting” section in this manual.
7. To use the bypass function, supply air through port A and exhaust the air in the
actuator through port B. The integrated ball valve will open.
8. To stop using the bypass function, supply air through port B and exhaust the air in
the actuator through port A. Integrated ball valve will close.
9. The integrated ball valve should be closed when the product is used as a trap.
172-65162M-03 (BT3N/MBT3N/PBT3N) 5 Jul 2013
