Replacing The Diaphragm (Preventive Maintenance) - WAGNER ZIP52 Translation Of The Original Operating Manual

Operating manual Pneumatic double diaphragm pump ZIP52 - ZIP80
8 Cleaning and Maintenance
6. Slowly open the air cut-off valve (4).
7. Slowly turn air pressure up on the pressure regulator (3) and only until the pump is
running regularly. Be ready to switch from air to working product and prevent back
spray.
8. Close pressure regulator (3) as soon as pure working material starts coming from the
return tube (6).
9. Close return valve (2).
10. Point the spray gun, without nozzle, into the tank (8) and open it.
11. Slowly open pressure regulator (3).
Be ready to switch from air to working product and prevent back spray.
12. As soon as pure working material without air bubbles is flowing, close pressure
regulator (3).
13. Close and secure the spray gun.
14. Carry out pressure relief in accordance with Chapter Pressure Relief / Work Interruption
[8 38].
15. Dispose of the contents of the tank (8) according to the local regulations.
If the pump doesn't start up, carry out the following steps:
1. Close the air cut-off valve (4).
2. Turn the pressure regulator (3) counterclockwise (0 bar pressure).
3. Open the air cut-off valve (4).
4. Turn the pressure regulator (3) clockwise until the pump starts.
If necessary, repeat the operation several times.
8.3 REPLACING THE DIAPHRAGM (PREVENTIVE MAINTENANCE)
Mark the coupled parts (diaphragm covers, manifold, covers) with a felt-tip pen so as to
make subsequent reassembly easier.
B_07801
Info
When executing the following operations it is imperative to avoid any rotation of the
shaft in the motor block!
Disassembly
1. Remove the suction and delivery manifolds.
2. Disassemble the fastening nuts and remove the outer diaphragm covers. Dismount the
pressure side cover (1).
3. Hold the end nut of the outer diaphragm disc with a wrench. Loosen the end nut of the
other diaphragm disc and dismount it.
46
1
12 Nm
8.8 lbft
Order number DOC 2330426 | Edition 09/2021