Cleaning/Replacement Of The Suction And Delivery Non-Return Valves; Replacement Of The Reversing Valve - WAGNER ZIP52 Translation Of The Original Operating Manual

Operating manual Pneumatic double diaphragm pump ZIP52 - ZIP80
8 Cleaning and Maintenance
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 [8 56].
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 [8 56].
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.
4. Remove all dirt particles as well as hardened product residues. Check the balls and seats
for excessive wear. Clean or replace the components.
5. Clean the contact surfaces of the manifolds and the diaphragm cover and mount the
components. Apply the correct torque, in accordance with Chapter Spare Parts [8 56].
It is recommended that the static seals be replaced when reassembling.
8.5 REPLACEMENT OF THE REVERSING VALVE
1. Dismount the pressure side cover and remove the reversing valve.
2. To clean it, blow the housing cavity of the reversing valve out with a jet of compressed
air (wear safety goggles).
3. Install the new reversing valve. When doing so, apply the correct torque (see figure in
Chapter Replacing the Diaphragm (Due to Breakage) [8 50]). Mount the valve slider
on one of the stroke stop positions. There are four possible positions, each of them is
suitable. Attach the pressure side cover.
During the performance of the operations described above, check the positioning of the
valve's seals and cover including the seal. Apply the correct torque, in accordance with
Chapter Spare Parts [8 56]. The reversing valve of the pump is lubricated at the factory and
does not need any lubrication.
Order number DOC 2330426 | Edition 09/2021 47