SMC Networks Clean Wet PAF3000 Series Instruction Manual page 10

PAF
Series
Piping and Operation: Air Operated Type (PAF3413)
Piping diagram
Pilot air supply port: P1
AIR SUP
Pilot air supply
port: P2
AIR SUP
Solenoid valve
Caution
Maintain the proper tightening torque for fittings and mounting bolts, etc. Looseness can cause problems such as fluid and air leaks, whi-
le over tightening can cause damage to threads and parts, etc.
Operation
<Starting and Stopping> Refer to the circuit examples
1. Connect air piping
Note 1)
<FLUID IN> and the discharge port <FLUID OUT>.
2. Using a regulator, set the pilot air pressure within the range of 0.2 to 0.5 MPa. Then, the pump will operate when power is applied to the
solenoid valve of the pilot air supply port and fluid will flow from the suction port <FLUID IN> to the discharge port <FLUID OUT>.
Note 2)
At this time, the ball valve on the discharge side is in an open state. The pump performs suction with its own power even without pri-
ming. Note 3) (Dry state suction lifting range: Max. 1 m) To restrict exhaust noise, attach a silencer to the solenoid valve air exhaust port.
3. To stop the pump, exhaust the air pressure being supplied to the pump with the solenoid valve of the air supply port.
Note 1) When used for highly permeable fluids, the solenoid valve may malfunction due to the gas contained in the exhaust. Implement
measures to keep the exhaust from going to the solenoid valve side.
Note 2) For the solenoid valve, use an exhaust centre 5 port valve, or a combination of residual exhaust 3 port valve and a pump drive 4
port valve. If air in the drive chamber is not released when the pump is stopped, the diaphragm will be subjected to pressure and
its life will be shortened.
Note 3) When the pump is dry, operate the solenoid valve at a switching cycle of 2 to 4 Hz. If operated outside of this range, the suction lif-
ting height may not reach the prescribed value.
<Discharge Flow Rate Adjustment>
1. The flow rate from the discharge port <FLUID OUT> can be adjusted easily by changing the switching cycle of the solenoid valve on the
air supply port.
solenoid valve
(Exhaust centre)
Air filter Regulator
Air supply
8
to the pilot air supply port <P1>, <P2> and connect piping for the fluid to be transfered to the suction port
Circuit example (1)
5 port
Process Pump
FLUID
P1
OUT
FLUID
P2
IN
Strainer
Recommended Valve
PAF3413
Refer to page 13 for further details.
Ball valve
Air filter
Air supply
Transfer fluid
VQZ140 (Exhaust centre)
Circuit example (2)
For the related products, refer to
page 13.
3 port 4 port
solenoid solenoid
valve valve
Process Pump
Regulator
P1
P2
Discharge
port
FLUID OUT
Suction port
FLUID IN
FLUID
OUT
FLUID
IN
Strainer
Transfer fluid