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Summary of Contents for fluid-o-tech ROTOFLOW
- Page 1 Fluid-O-Tech PUMP TECHNOLOGY AT ITS BEST WWW.FLUID-O-TECH.COM Office: 161 Atwater St., Plantsville, CT 06479 Phone: (860) 276-9270 Fax: (860) 620-0193 “ROTOFLOW” ROTARY VANE PUMP REBUILD MANUAL 08/09 Ed., Rev. B Page 1of 16...
- Page 2 Contents 1) Materials Needed 2) Disassembly 3) Inspection 4) Reassembly 5) Testing 6) Rebuild Specifications CAUTION: Proper safety precautions should always be observed. Always wear proper eye protection when working. 08/09 Ed., Rev. B Page 2of 16...
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Page 3: Materials Needed
Materials Needed # 1) Internal Retaining Ring Pliers/Spanner Wrench Pliers with the capacity to remove a 2” internal retaining ring, or spanner wrench if your pump has a screw-on cap. # 2) Arbor press Arbor press with at least 12“ of clearance underneath the ram. # 3) Metal Rod Rod to press out the shaft. - Page 4 # 5) Metal Rod Rod to press out the washer and counterface. It should be about 3/4“ diameter. # 6) Plastic Rod Short length of plastic rod for pressing the counterface in place. Nylon is ideal, and should be about 1.1”. The end should be flat and squared.
- Page 5 # 10) Blocks or supports Blocks or supports to hold the pump when pressing pieces in or out. # 11) Repair kit Repair kit for the Fluid-O-Tech rotary vane pump you plan to repair. 08/09 Ed., Rev. B Page 5of 16...
- Page 6 Disassembly 1) If your pump has a retaining ring on the cap, use the retaining ring pliers to remove the ring. Supporting the pump under the arbor press and using the ram to apply pressure aids in removal of the retaining ring, and can help prevent it from flying off. If your pump has a sticker on the cap and no retaining ring, remove the sticker.
- Page 7 6) Once the bearing is out, support the pump again on its rim with the bearing end facing up, making sure nothing is obstructing components from being pushed out of the body. Now use the metal rod (material #5) to press out the washer, counterface, and any remaining pieces. Be sure that the rod presses only on the washer, and not on the small retaining ring or lip.
- Page 8 Inspection Once disassembled, the reusable components of the pump will need to be inspected for damage. This includes the body, the rotor and the bypass. 1) Pump Body: Check the pump body for dents on or around the rim that may impair the insertion of the new graphite.
- Page 9 out, and/or wear the graphite quickly. First, visually inspect the rotor for surface finish, nicks, or scrapes. If it appears in good shape it should be tested. Run a new vane through each slot by hand. It should slide freely through each slot. Assemble the rotor with the vanes, pins(if applicable), liner, and flanges.
- Page 10 Reassembly 1) Before beginning to reassemble the pump, make sure all the pump parts and your work area are clean. The clearances of the pump are very tight, and even small particles can damage the pump or keep it from functioning properly. Carefully refer to the parts diagram to ensure the proper selection and orientation of all parts.
- Page 11 9) Sometimes pushing the seal over the shaft in the next few steps can be difficult. It helps to wet the seal and shaft with water, or even better, ethyl alcohol prior to doing this. The same applies to the counterface which will be inserted later. Do not use any type of grease or oil to install the seal or counterface.
- Page 12 13) Take the pump body place it over the top of the rotor/graphite assembly, with the acorn nut facing directly to the left and the ports facing upward (toward 12 o’clock). Locate the ball bearing and position it in the hole on the top of the pump body. Using the metal tube (material #10), press the body and bearing over the graphite/rotor assembly slowly and carefully, guiding the graphite into the pump as you go.
- Page 13 the screw back into the acorn nut, returning it to the desired setting. If you want to test the bypass setting, refer to the section “Testing” below. 08/09 Ed., Rev. B Page 13of 16...
- Page 14 1) Connect the pump to a motor using the proper coupling and adapter if necessary (contact Fluid-o-Tech for details, or visit www.fluidotech.com). Plumb the inlet of the pump directly to a source of clean water, using tubing with an ID sufficiently sized for the flowrate of the pump.
- Page 15 this the pump performs properly without leaking, it has been successfully rebuilt. If the cap leaks, the cap o-ring and mating surfaces should be checked and replaced if necessary and re-tested. If the pump leaks from the weep holes, the seal and counterface should be checked and/or re-placed, then reassembled and tested.
- Page 16 Rebuilding Specifications Liner Inside Diameters: 070 32.7mm 32.9mm 33.3mm 33.7mm 34.1mm 34.4mm 34.8mm 35.2mm Pin Lengths: 16.2mm 16.2 mm 16.5mm 16.9mm 17.2mm 17.6mm 17.9mm 18.1mm Max Shaft Torque: 2.6 in.-lbs. Seal Depth: 21mm +/- .1mm Ball Bearing: 11mm ID 30 mm OD 08/09 Ed., Rev.
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