MEC 2000/P MEC 3000/P MEC 4000/P Owner’s Record Date of Purchase: ____________________________ Purchased from: _____________________________ Model: ______________________________________ Serial Number: _______________________________ National Vacuum Equipment, Inc.
© 1998 National Vacuum Equipment, Inc. No part of this manual may be reproduced without the written permission of National Vacuum Equipment, Inc.
Contents Introduction About National Vacuum Equipment, Inc. . . . . . . . 5 Limited Warranty Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Warranty Procedures . . . . . . . . . . . . . . . . . . . . . . . 9 The MEC Series Pumps Pump Specifications . . . . . . . . . . . . . . . . . . . . . . 11 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 System requirements . . . . . . . . . . . . . . . . . . . . . . 13 Operating Instructions Installation . . . . . .
Parts List - MEC /P Series Pumps Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Parts Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Parts List - MEC /540 Series Pumps Parts List and Diagram . . . . . . . . . . . . . . . . . . . . 38 Parts List - MEC Mixer Valve Manifold Parts List and Diagram . . . . . . . . . . . . . . . . . . . . 39 Parts Details - Lubrication Systems Automatic Lubrication System . . . . . . . . . . . . . . 40 Automatic Oil Pump . . . . .
Introduction General Information NVE About National Vacuum Equipment, Inc. Congratulations! You now own a quality vacuum/pressure pump exclusively distributed in North America by National Vacuum Equipment, Inc. You have not only acquired a superior piece of equipment from a qualified dealer, you have hired a team of vacuum experts. We stand ready to work with your dealer to answer your questions and provide you with the information necessary to keep your equipment in peak working condition.
OUR HISTORY: National Vacuum Equipment, Inc. was founded in 1980 by Bruce Luoma. The Company started as a retailer of vacuum pumps. Soon after it started, the Company secured the rights to exclusive distribution of the Battioni vacuum pumps in North America. This helped the Company to evolve into its current status as a wholesale supplier.
Be sure to line up the oil pump drive key and the oil pump shaft prior to tightening the assembly to the pump. 23. Connect the oil lines to the oil pump. The pump is now ready to run. 24. Start the pump at a slow RPM and allow to run for a few minutes until oil can be seen in the lines or dripper. Limited Warranty MEC 2000/P MEC 3000/P MEC 4000/P National Vacuum Equipment, Inc. guarantees that the product it provides is free of manufacturer’s defects, including materials and workmanship.
pumps received for warranty consideration must retain the original NVE serial number tag. 2. The one (1) year period shall begin the day the product is shipped from our warehouse, unless we are provided with an authentic copy of the original resale invoice, in which case the one (1) year period shall begin at such invoice date. 3. The covered product must be used in an application for which it was intended. We do not recommend our product for particular uses or applications. 4.
. Manufacturer’s liability as stated herein cannot be altered except in writing signed by an officer of National Vacuum Equipment, Inc. 10. Certain products provided by National Vacuum Equipment, Inc. are covered by their respective manufacturer’s warranties (e.g., engines used in the NVE engine drive packages). These products are not covered by the National Vacuum Equipment, Inc. Manufacturer’s Warranty.
The MEC Series Pumps Model-Specific Information for the MEC 2000/P MEC 3000/P MEC 4000/P MEC Series Pump Specifications Model Number 2000 RPM Range 800–1400 Max. Air Flow-CFM 90 Max. Continuous Vacuum 20 Max. Intermittent Vacuum 27 Max. Continuous Pressure 15 Max.
Performance MEC 2000/P PERFORMANCE PRESSURE PSI RPM 1400 1200 1000 VACUUM – INCHES OF MERCURY 30 25 HP 12 11 9 8 6 4 3 4 4 4 4 5 5 5 6 6 CFM 67 70 73 76 80 85 90 88 87 86 84 80 77 71 64 42 HP 11 9 8 6 5 3 2 3 3 3 3 4 4 4 5 5 CFM 54 57 61 66 68 72 75 74 72 70 68 64 60 54 40 30 20 15 10 5 0 3 6 9 12 15 18 21 24 27 H.
System requirements High quality components • The pump body and rotor are constructed of cast iron with free sliding vanes made of special nonmetallic, heat resistant material. • Because vanes are nonmetallic, flammable fluids may be handled without danger. • Vanes wear evenly because tips always remain in contact with the wall surface. • For maximum life and proper performance we recommend the use of our compatible components, Portal F-801-2A, Moisture Trap F-901-2A, and Oil Catch Muffler F-1002-4A.
Operating Instructions MEC 2000/P MEC 3000/P MEC 4000/P Installation • Check pump rotation. See Determining the Rotation of Pump. • Pump should always be mounted in a level, horizontal position on a firm, flat surface. • Grade 5 bolts should be used in installation. It is important to use flat washers and lock washers. • We recommend the use of oil resistant hose on both the inlet and outlet sides of the pump. If using direct drive system, always use a flexible coupling.
Lubrication procedure for all vacuum pumps on start up (This procedure must be followed prior to the operation of a new vacuum pump.): • With force feed lubrication type, install dripper on top of pump and connect rubber lines.* • Remove dipstick and fill oil reservoir with recommended turbine oil. • With 540 RPM pumps: fill gear housing to level of clear plastic sight plug on the side of the housing with SAE 90 gear oil. • Remove plastic cap on air inlet and pour 2 oz. turbine oil into pump.
Adjusting the automatic oil pump The automatic oil pump is a metered piston-type pump. If you wish to adjust the pump, please follow these instructions: Adjusting the oil rate Oil flow is changed by adjusting the length of the stroke of the piston. 1. To adjust the oil rate, remove cap #P16. Under this cap you will find a jam nut #P15 and adjusting screw #P11. 2. To adjust oil rate loosen jam nut and turn adjusting screw clockwise to reduce oil flow or counterclockwise to increase oil flow. 3.
Testing flow rate after adjustment 1. Observe oil drip rate in oil view meter or oil line to ensure adequate lubrication. 2. Adjustments should be done gradually so as not to starve the vacuum pump of oil. Recommended lubrication We recommend that turbine grade oil be used in all our pumps. Turbine oil is more highly refined than motor oil and is much less likely to create carbon. Turbine oil is available from your local oil distributor. Below is a list of acceptable oils. • Penzoil Penzabell 68 T.O.
Maintenance • With force feed type, the lubrication rate is adjustable at dripper and should be checked on a regular basis. Oil should be supplied to pump at a rate of 1 drop every 2 seconds. • Average usage of oil is approximately 1 Gal. per 10 hours, depending on operation. • Oil should be changed every 2000 hours in gear per housing, if equipped. • Front bearing should be greased approximately every 4 months. Use caution when greasing bearing not to over grease, as this can cause damage to seals.
• It is good practice to clean your pump on a regular basis as this will normally increase the life of your pump greatly. • Vane wear should be checked every 12 months. A new vane will be flush with the outside diameter of the rotor. • When vane wear exceeds 1/4" the vanes should be replaced. It is a good idea to have an extra set of vanes, seals and gaskets on hand at all times.
Troubleshooting MEC 2000/P MEC 3000/P MEC 4000/P Pump overheats • No oil in pump • Oil adjustment set too lean • Rpm too fast • Prolonged operation Too much oil use • Oil adjustment set too rich • Oil seals defective • Cracked pump body Pump doesn’t turn • Broken vane • Frozen • Pump endplate bolts too tight • Faulty PTO or drive set up 21
No vacuum or pressure in tank • Suction valve in neutral • Defective seal or vanes • Pump not driven fast enough • Check valve or suction line clogged • Leak in tank or fittings 22
Pump Rebuilding MEC 2000/P MEC 3000/P MEC 4000/P Please read these instructions completely before attempting repair. Vane checking 1. MEC pumps are equipped with a vane checking port. 2. Remove the Allen head plug in an endplate. 3. Measure the wear. 4. If the wear is more than 1/4” the vanes should be replaced. Vane replacement 1. Clean off the exterior of the pump. 2. Remove the oil supply line at the oil pump and drain the oil tank.
3. Remove the 3 6x20mm screws attaching the oil pump assembly to the vacuum pump. 4. Remove the oil pump drive key from the end of the rotor. 5. Remove the six bolts that attach the endplate to the pump. Secure two 10x50mm bolts to screw into pull holes. Screw the bolts into the pull holes evenly and pull off the endplate. If you cannot locate 10x50mm bolts, you can use the endplate bolts and shim behind the endplate as the endplate comes off.
6. Note the number of gaskets on the endplate. You must use the same number of gaskets during reassembly. 7. Inspect vanes, bearings and seals and replace as necessary. A new vane is flush with the outside diameter of the rotor. If they are worn more than 1/4" they should be replaced. We recommend replacing vanes in sets. If the ends of the vanes are chipped or delaminated they should be replaced. The seals should be soft and pliable. The bearing should turn smoothly. 8.
9. Coat the housing and vanes with oil and install the vanes in the rotor. The vanes should slide freely in the vane slot. 10. Locate the replacement seals and install them in the endplate with the seals positioned back to back. 11. Lubricate and install the bearing in the endplate. 12. Locate the proper number of gaskets and install them on the endplate. Do not use any gasket sealer.
13. Lubricate seal sleeve and install the endplate on the end of the rotor and carefully drive the endplate on the rotor. 14. When the endplate is close enough to the housing install the endplate bolts lift the endplate-rotor assembly to allow proper alignment of the bolts and bolt holes and start the bolts into the housing. Just prior to making contact with the housing, lift the endplate -rotor assembly again to insure proper clearance between the rotor and the housing.
16. At this point you should be able to turn the pump by hand. 17. Reinstall the oil pump drive key and oil pump mount assembly to the pump. Be sure to line up the oil pump drive key and the oil pump shaft prior to tightening the assembly to the pump. 18. Connect the oil lines to the oil pump . The pump is now ready to run. 19. Start the pump at a slow RPM and allow to run for a few minutes until oil can be seen in the lines. The pump is now ready to go to work.
Complete rebuild 1. Follow steps 1-7 in the vane replacement instructions. 2. Place a cushion under the rotor to prevent damage when the front endplate is unbolted. 3. Remove the six bolts attaching the endplate to the housing. Support the rotor shaft prior to loosening the last bolt. Slide the rotor out 4. Remove the front endplate, front bearing and bearing cover from the rotor with a puller or hydraulic press. Put an identifying mark on the endplate so as to not confuse it with the rear.
5. 6. Count the number of gaskets. Clean the rotor, rotor slots and housing and inspect for wear or damage. If the housing needs to be bored or honed, remove only as much material as is necessary to give a smooth clean bore. The maximum over bore we recommend is .060 inch. (A new housing has a bore of 6.300 inches.) If you bore or hone the housing, remove the four way valve assembly and internal check valve ball prior to machining. 7. Inspect vanes, bearings and seals and replace as necessary.
8. Locate the replacement seals and install them in the endplates with the seals positioned back to back. Replace the seal in the bearing cover with the lip facing outward. 9. Lubricate and install the bearings in the endplates. 10. Locate two pieces of threaded rod 3/8-18 thd. to use as guides and screw them into the two top holes in the housing. Locate proper number of gaskets and slide on the threaded rods. Do not use any gasket sealer. 11. Lubricate the housing bore. 12.
13. Slide rotor-endplate assembly into the pump housing. Slide the cushion material used during disassembly under the rotor on the opposite end to gain leverage during assembly of endplate to housing. 14. Lift the rotor-endplate assembly and slide over the 3/8 inch threaded guides and install the endplate bolts.
Tighten the bolts sufficiently to make contact between the endplate and the housing. 15. Coat vanes with oil and install the vanes in the rotor. The vanes should slide freely in the vane slots. 16. Locate the proper number of gaskets and install them on the rear endplate. Do not use any gasket sealer. Locate the two 10x50mm bolts used for pulling the endplate and insert them in bolt holes on either side of the endplate to capture the gaskets. 17.
Tighten endplate bolts to the point where the endplate just touches the housing. 19. With a prybar and a block of wood, lift the endplate to make certain the seal gap is properly set and tighten the endplate bolts to 35-40 ft lb of torque. Tighten both endplates in this manner. 20. Seat the bearings on both endplates with a bearing driver or punch. 21. At this point you should be able to turn the pump by hand. 22. Install the seal in the front bearing cover.
Parts List – MEC /P Series Pumps MEC 2000/P MEC 3000/P MEC 4000/P See Parts Diagram on the next page. Part # Description M1 ME1 MEC1 M3 M3/P M4 M5/P ME5/P MEC5/P M5 ME5 MEC5 AM10 AM11 M12 M13 M16 M17 M18 M20 M27 Housing - 2000 Housing - 3000 Housing - 4000 Rear Endplate Front Endplate Gasket Rotor - 2000/P Rotor - 3000/P Rotor - 4000/P Vane - 2000 Vane - 3000 Vane - 4000 Dipstick (mm .
Parts Diagram MEC 2000/P MEC 3000/P MEC 4000/P Parts list continued from previous page.
National Vacuum Equipment, Inc.
MEC 2000/540 - 3000/540 - 4000/540 MEC 2000/540 – MEC 3000/540– MEC 4000/540 Parts Diagram Part # Description M2 M4 M5/M ME5/M MEC5/M M6 M7 ME7 MEC7 M12 M16 M17 M18 M21 Gear Casing Gasket Rotor - 2000/540 Rotor - 3000/540 Rotor - 4000/540 Key Vane - 2000 Vane - 3000 Vane - 4000 Bearing Bolt (m10x30) Washer (10) Seal (48-62-8) Oil FIll Plug Part # Description M23 M24 M25 M26 M27 M28 M29 M30 M32 M33 M34 M35 M43 Drain Plug Washer Bearing Gear Seal Gasket Gearbox Front Cover Plug Locknut Gear Bolt (m8x25)
MEC 2000 - 3000 - 4000 Mixer Valve Manifold MEC 2000 – MEC 3000 – MEC 4000 Mixer Valve Manifold Parts Diagram Part # Description Part # Description M8 M10 M11 M16 M17 M34 M35 M39 M40 M44 M45 Fitting Dipstick Bolt Bolt Washer Bolt Washer Gasket Seal Dripper Spring M46 M60 M63 M64 M66 M69 M72 M83 M84 M85 Hose Handle Flange O-ring Bolt 4-Way Valve Housing Gasket 2” Hose Connection Mixer Valve Cover 4-Way Valve Plug 39
Automatic Lubrication System MEC 2000 MEC 3000 MEC 4000 See Parts Diagram opposite. Part # Description LA1 LA11 LA13 LW32CD LW32CS LF8 M13 M49 R3 R15 R31 R33 R34 R36 R37 R46 Bearing Cover Hose (4mm x 6mm x 9.5") Hose (2 mm x 4 mm x 18.
Detail Automatic Lubrication System MEC 2000 - 3000 - 4000 R15 LA13 R46 R37 LA11 R37 R33 LA1 R31 R34 R3 LF8 R36 LW32CD LW32CS M13 M49 41
Automatic Oil Pump See Parts Diagram opposite.
Detail Automatic Oil Pump Two One Outlet Type Part # LW32CD Clockwise – One Outlet Part # LW32D Clockwise Part # LW32CS Counterclockwise – One Outlet Part # LW32S Counterclockwise 43
Gear-Type Lubrication System MEC 2000/P MEC 3000/P MEC 4000/P See Parts Diagram opposite. Part # Description LF1 LF2 LF3 LF4 LF6 LF7 LF8 LF12 LF12CCW LF12G LF12GL LF13 LF15 LF17 LF19 LF20 LF21 LF22 M13 Cover Plate Cover Plate Gasket Drive Gear Driven Gear Bolt Oil Pump Housing Drive Tab Dripper – T-Type (Clockwise) Dripper – V-Type (Counterclockwise) Dripper Gasket Dripper Glass Fitting (Housing Oil Reservoir - M10 x 1) Hose (5mm x 10.5 mm x 6.75") Fitting (Gear Type Oil Pump - M6 x 1) Hose (5mm x 10.
Detail Gear-Type Lubrication System MEC 2000/P • MEC 3000/P • MEC 4000/P LF12 LF20 LF19 LF15 LF13 LF17 LF17 LF17 LF1 LF3 LF7 LF8 LF6 LF2 M13 LF4 45
Index A H P Air Flow 11 Automatic Lubrication 40 Automatic Lubrication System 40 Automatic Oil Pump 42 Hose 15 Housing 25, 29, 35 Housing bore 31 Housing, boring or honing 30 Hydraulic press 29 B I Bearing 11, 19, 25, 29, 30, 34 Bearing cover 29, 31 Bearing driver 34 Bore 30 Identifying mark 29 Installation 15 Instructions, rebuilding 23 Parts Diagram 36 Parts Diagram Foldout 35, 40, 42, 44 Parts List 35, 40, 44 Performance 12 Piston 17 Portal F-801 13 Porting size 11 Pressure, continuous 11 Pressu
System requirements 13 T Tank 22 Threaded rod 31 Torque 27, 33 Troubleshooting 21 Turbine oil 18 V Vacuum, continuous 11 Vacuum, intermittent 11 Vacuum, none in tank 22 Valve, changeover 19 Valve, check 22 Valve, four way 11 Valve, pressure relief 19 Valve, suction 18 Vane 13, 19, 21 Vane breakage 8 Vane life 19 Vane replacement 23, 29 Vane wear 18 Vanes 25, 30, 32 Vanes, chipped or delaminated 25, 30 W Warranty 7 Warranty procedure 9 Washers 15 Weight 11 Woods Sure Flex Couplers 15
