Operating manual Pneumatic double diaphragm pump ZIP52 (PF Eco) Finishing
8 Cleaning and Maintenance
Order number 2332848 | Edition 08/2020
41
8.2.5 Emptying Pump
WARNING
Gas mixtures can explode if there is an incompletely filled pump!
Danger to life from flying parts.
Ignition of potentially explosive surrounding atmosphere.
4
Empty and fill the device slowly and in a controlled manner.
4
Avoid potentially explosive atmosphere in the surroundings.
Info
If the pumping product becomes heated, switch off all heaters and let the product cool
off.
B_06949
8
1
3
2
3
8
1
5
4
5
6
6
7
7
9
9
A
B
A
closed
B
open
1. Visual check: personal safety equipment, grounding and all devices ready to use.
2. Place an empty, grounded collection tank (7) under the return tube (6).
3. Place the suction hose in an empty, grounded tank (8).
4. Close the pump pressure regulator (1) and atomizing air pressure regulator (3) (0 MPa;
0 bar; 0 psi).
Emptying via return line
1. Open return valve (5).
2. Slowly open the air cut-off valve (4).
3. Slowly dial up the air pressure at the pressure regulator (1) until the pump operates
smoothly (approx. 0.15 MPa; 1.5 bar; 21.75 psi).
4. Be ready for the switch from working product to air.
5. As soon as working material is no longer flowing from the return tube (6), close
pressure regulator (1).
