VERDER VA 10 Air-Operated Diaphragm Pumps

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Service Tools Required Torque wrench One 11 mm and two 13 mm socket wrenches Phillips screwdriver O-ring pick 13/32” EZY-OUT bearing extractor Rubber mallet Vise with soft jaws Diaphragm Repair Disassembly NOTE: A Fluid Section Repair Kit is available. See page 21 for the correct kit. Parts included in the kit are marked with an asterisk, for example (401*). Use all the parts in the kit for the best results. Warning To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 10. 1. Relieve the pressure. Disconnect all hoses. 2. Remove the air valve from the pump (see page 13). 3. Remove the manifolds (102) and disassemble the ball check valves as explained on page 17. Always replace the o-rings (108) with new ones. 4. Using a 7/16” socket wrench, remove the clamp nuts (113) and the grounding strip (112). Loosen the clamps (111) and slip them over the housing (1). Pull the covers (101) off the pump, then remove the clamps from the housing. See the Detail in Fig. 14. 5. Using a 1/2” socket wrench on both outer diaphragm plates (103), unscrew one plate from the diaphragm shaft (23). Remove one diaphragm (401), inner diaphragm plate (118), and o-ring (404). Pull the opposite diaphragm assembly and the diaphragm shaft out of the pump housing (1). See Fig. 14. Clamp the shaft in a vise with soft jaws and unscrew the outer plate (103), then disassemble the remaining diaphragm assembly. 6. Inspect the diaphragm shaft (23) for wear or scratches. If it is damaged, check the bearings (31) also. Replace parts as needed. To remove the bearings, place a 13/32 EZY-OUT in a vise. Position the pump housing (1) over the EZY-OUT (see Fig. 14). Turn the housing in the direction shown by the arrows to remove the bearing. 7. Hook the shaft seals (30) with an o-ring pick and pull them out of the housing (1). 8. Clean all parts and inspect for wear or damage. Replace parts as needed. Reassembly 1. Install the shaft seals (30) in the housing (1). Using a rubber mallet, carefully drive the bearings (31) flush into the housing so the holes face out. See Fig. 14. 2. Grease the diaphragm shaft (23) and slide it into the housing (1). Install the o-rings (404*) in the grooves of the housing. 3. Assemble the inner diaphragm plates (118), diaphragms (401*), and outer diaphragm plates (103) as shown in Fig. 14. Apply medium-strength (blue) Loctite or equivalent to the threads of the fluid-side plates (103), and torque the plates to 8.5 to 9.6 Nm at 100 rpm maximum using a 1/2” socket wrench. Do not over-torque. These parts must be assembled correctly. Caution Do not over-torque the outer diaphragm plates (103). Doing so will damage the hex heads. 4. When installing the covers (101), slip the clamps (111) over the housing (1) before positioning the covers. See the Detail in Fig. 14. Engage the notches in the covers with the locator tabs on the housing, then position the clamps over both parts. The clamp bolts should be on the air valve side of the housing, and pointing down toward the bottom of the pump. Install the grounding strip on the bolts. Apply thread lubricant to the bolts, then install the clamp nuts (113). Using a 7/16” socket wrench, torque the nuts to 5.6–6.8 Nm. See Torque Sequence, page 25. 5. Reassemble the ball check valves and manifolds as explained on page 17. Always install new o-rings (108*), and make sure they are seated properly. 6. Reinstall the air valve, using the six mounting screws (15). See Fig. 8. 18 819.0154
Service 1 2 3 4 6 Grease shaft. Apply thread lubricant. Flat side faces ball. Beveled end up. Round side must face toward diaphragm. 1 106 8 9 104 2 7 8 9 Apply medium-strength (blue) Loctite or equivalent. Torque to 8.5–9.6 Nm at 100 rpm maximum. Torque to 5.6–6.8 Nm. See Torque Sequence, page 25. Do not over-torque. 10 Notches must engage tabs. 102 *108 202* 4 301* 201* 3 101 112 *404 101 111 10 113 8 23 1 118 *401 103 7 2 8 111 113 *108 106 202* 4 301* 1 201* 3 2 01440 DETAIL OF CLAMPS AND COVERS 404* 1 Acetal Model Shown 102 107 106 8 9 30 FLUID SIDE AIR SIDE 31 01441 1 103 7 9 30 31 *401 Fig. 14 118 6 23 1 CUTAWAY VIEW OF DIAPHRAGM ASSEMBLIES IN PUMP HOUSING 13/32 IN. EZY-OUT 01443 01442 DETAIL OF BEARING REMOVAL USING EZY-OUT 819.0154 19
Page 1 and 2: INSTRUCTIONS-PARTS LIST VERDER VA 1
Page 3 and 4: Warning TOXIC FLUID HAZARD Hazardou
Page 5 and 6: Installation Grounding Warning FIRE
Page 7 and 8: Installation BUNG-MOUNT TRANSFER IN
Page 9 and 10: Installation Air Exhaust Ventilatio
Page 11 and 12: Maintenance Lubrication The air val
Page 13 and 14: Service Tools Required Torque wr
Page 15 and 16: Service Tools Required 1. Relieve t
Page 17: Service Tools Required Torque wr
Page 21 and 22: Repair Kit Listing For VERDER VA 10
Page 23 and 24: Parts Fluid Section Parts List Flui
Page 25 and 26: Torque Sequence Always follow torqu
Page 27 and 28: Technical Data Pumps with PTFE Diap
Page 29 and 30: Customer Services/Guarantee CUSTOME
Page 31 and 32: EC-DECLARATION OF CONFORMITY EG-VER

VERDER VA 10 Air-Operated Diaphragm Pumps

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