Operating manual Pneumatic double diaphragm pump ZIP52 (PF Eco) Finishing
8 Cleaning and Maintenance
Order number 2332848 | Edition 08/2020
45
B_07801
1
12 Nm
8.8 lbft
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.
4. Remove the released diaphragm with its corresponding internal disc, and remove the
shaft from the motor block.
5. Clamp the end of the shaft released from the diaphragm in a bench vice (with soft jaws
to avoid damaging it) and remove the external diaphragm disc from the opposite end
of the shaft. Then remove the second diaphragm with its internal disc.
Assembly
1. Assemble the new diaphragm with its internal disc and properly fasten it to the
relevant external disc.
2. Remove the shaft from the bench vice and put it in the motor block. Grease the shaft
inside and outside (beyond the underside of the motor block). Thereby move the shaft
into different positions. See Chapter Spare Parts [
55].
3. Mount the inner diaphragm disc, the diaphragm and the outer disc and tighten them
properly onto the nut of the opposite outer discs using two wrenches.
4. Attach the silencer and the pressure side cover. Check the correct positioning of the
cover and its seal.
5. Attach the outer diaphragm cover and the manifolds. Ensure correct position of seals of
the ball valves when doing so.
6. Screw on and tighten the cover screws. Fasten the manifold screws. Apply the correct
torque, in accordance with Chapter Spare Parts [
55].
8.4 CLEANING/REPLACEMENT OF THE SUCTION AND DELIVERY NON-RETURN VALVES
1. Remove the suction and delivery manifold.
2. Remove the seals, seats and balls from the diaphragm covers and the manifold's
housings.
3. Check the condition of wear of the ball guide/stops inside the diaphragm cover and
manifold. Replace if worn.