Stokes Microvac 412H-11 Instruction Manual Download Page 1 | Manualshive

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Instruction Manual

Stokes Microvac

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Summary of Contents for 412H-11

Page 1: ...Instruction Manual Stokes Microvac 412H 11 Piston Vacuum Pump...

Page 2: ...Exhaust Piping 2 2 2 4 Electrical Connections 2 2 2 5 Cooling 2 3 2 6 Lubrication of Pump 2 4 3 OPERATION 3 1 Pre Start Check 3 1 3 2 Pump Start 3 1 3 3 Checking Oil Level 3 1 3 4 Operation of Gas Ba...

Page 3: ...et Pumping Fluids Lubricants and Grease Bulletin ILLUSTRATIONS Figure I Pump Cross Section View 2 Vacuum Piping Pump Below System 3 Vacuum Piping Pump Above System 4 Exhaust Piping 5 Wiring Diagram 6...

Page 4: ...the pump to provide the necessary piston to cylinder oil seal Finally the oil is forced out through the exhaust valve with the air and returns to the reservoir A solenoid valve automatically prevents...

Page 5: ...ken from any two of the motor leads Check both motor and solenoid nameplates to insure proper voltage 1 5 LUBRICANTS Refer to Section 2 for recommended high vacuum grease and pumping fluids 1 6 GUARDS...

Page 6: ...decreased When connecting pump to the system provide a vertical pipe at least 2 ft long between the pump and the system ifthe pump is below the system inlet Ifthe pump is above or level with the syst...

Page 7: ...llow removal ofmoisture and contaminated oil before it can accumulate sufficiently to drain back into pump oil reservoir See Figure 4 XHAUST PIPING Figur 4 2 3 2 The exhaust pipe should be no smaller...

Page 8: ...1 230V 460V WIRING OIAGRAM Fi Jllr 5 Blk Red 2 5 COOLING 2 5 1 This pump is water cooled and must be connected to a water supply 2 5 2 The 112 water inlet connection is located in the pump housing on...

Page 9: ...The oil is a multigrade petroleum oil fortified for oxidation protection containing detergent dispersants with excellent flow characteristics at low temperature It has a viscosity of430 SSU at 100 Deg...

Page 10: ...UMP START 3 2 1 Tum cooling water ON 3 2 2 Depress start button and check solenoid valve for proper operation CAUTION DO NOT START PUMP WHEN OIL TEMPERATURE IS BELOW 55 F 3 2 3 Be sure the equipment b...

Page 11: ...s to remove the gas ballast valve entirely and plug or cap the pipe to which the gas ballast valve is attached Opening the gas ballast slightly will quiet valve noise when pump is blanked off but will...

Page 12: ...ne near the solenoid If the pump is to be operated with oil temperature in excess of 160 Deg F the use of a heavier viscosity oil is recommended See Section 2 6 3 6 2 When starting the pump or when ha...

Page 13: ...P IS NEEDED I CONNECT HERE tfl FORELINE VALVE I t Required if separate I I roughin9 line is used I t J J I I GAGE PORT AIR INLET VALVE PORT MECH FOREPUMP STANOARO VACUUM SYSTeM PIPING Figur 7 4 3 REPA...

Page 14: ...MOUNT OF OIL INTO INLET WHILE SLOWLY ROTATING PUMP THRU TWO 2 REVOLUTIONS POUR REMAINDER OF OIL INTO THE RESERVOIR NOTE THE JOINT BETWEEN THE RESERVOIR AND HOUSING MAY BE SEALED BY THE FACTORY WITH A...

Page 15: ...aust valve chamber Wipe the reservoir clean before filling with new oil Milky appearance of oil indicates water contamination Use Gas Ballast to clear oil or change oil Also most water can be removed...

Page 16: ...n case of a power failure at regular intervals See page 3 1 para 3 1 B In the event the solenoid valve stays closed after the pump is started the oil cannot circulate This is indicated by poor perfonn...

Page 17: ...elts 4 Insert screw in hole that is threaded through bushing side See Figure 9 One screW in each hub is left over and not used in loosening operation 5 Tighten screws alternately until bushing is loos...

Page 18: ...with a thin coat of vacuum grease or pump oil Replace the sealmating ring on the shaft using a slight back and forth motion However the seal mating ring should still maintain slight free movement on t...

Page 19: ...mger pressure only Make sure the polished surface is facing toward you Take care to protect this surface since this forms the seal when in contact with the carbon face Gently place the polished underc...

Page 20: ...is broken Primer N to dry 2 to 5 minutes Apply adhesive 620 to counter bore only It is recommended that the static seat be installed within 10 minutes after adhesive 620 is applied over primer fjg 1...

Page 21: ...AR THIS SURFACE Place assembly tool against seal housing assembly using an arbor press gently press seal housing assembly into end cap until it is seated against the shoulder DO NOT USE EXTREME FORCE...

Page 22: ...LAPPED CARBON FACE LUBE THIS 0 RING END CAP 1 8 x 45 SEAL ASSY SEAL INSTALLATION FIGURE 2 5 7b...

Page 23: ...ck surface ofthe static seat Gently press seat into end cap using fmger pressure only Make sure the polished surface is facing toward you Take care to protect this surface since this forms the seal wh...

Page 24: ...s internal parts This should be done as follows A Lower the pulley and rotary oil seal as described in paragraph 5 2 1 ofthis section B Remove the side cover 12 by taking out the screws securing the s...

Page 25: ...screws 2 Remove the roller bearing 23 from the bearing ring 22 replace with a new one 3 Replace bearing ring 22 in pump housing 44 being careful to position retaining pin 24 in corresponding hole in p...

Page 26: ...uum system Possible Remedy l Check oil level utilize gas ballast 2 Drain and wipe out reservoir and valve chamber Refill with proper oil See Section 5 1 3 5 l 4 l Check and if necessary clean and or r...

Page 27: ...ken parts as required l Check solenoid valve for proper operation 2 Disassemble and remove foreign material Make sure oil lines are not clogged 3 Smooth minor scoring with 500 emery cloth and wash tho...

Page 28: ...and replace any worn parts Check Solenoid Valve I Change to lighter grade oil or warm oil before pouring into pump especially with low ambient temperatures Pump should not be started when oil tempera...

Page 29: ...PUMP DIMENSIONS TOLERANCES C 278 575 1 6 000 000 001 2 0010 0005 0000 12 988 000 004 C 252 459 1 6 000 000 0001 2 0010 0005 0000 12 988 0000 004 C 243 595 11 6 003 002 000 6 986 000 003 1 498 001 001...

Page 30: ...feet Pump Speed Motor Std Electrical Specs Motor Speed Pipe Connections Suction Discharge Water Inlet Water Outlet Oil Capacity Net Weight Shipping Weight Height Floor Space Cooling 10 10 microns Hg o...

Page 31: ...utlet water temperature on jacketed models to make sure the pump is running warm Oil in the pump reservoir should be approximately 140 degrees to 160 degrees F for best gas ballast efficiency 5 If pum...

Page 32: ...alve springs and exhaust valve discs Clean out any sludge in oil reservoir Every 6 Mos 3 Replace the spring and 0 ring seal in the gas ballast check valve 6 months interval recommended 4 Check outlet...

Page 33: ...230 460V MOTOR STD f T 4 af 21 MMi EXHAUST 3 NPT INTAKE 4 STI FLANGE WITH e i II N C TAPPED HOLES O 7f STRADDLING S r c 2 l OIL FILL _ 12 305 MhI I DEEP TYP 25 114M CAP 12 GAL 45 LITERS GAS BALL4ST VA...

Page 34: ...ipment replacement parts when and if emergencies occur Qty 2 4 8 8 2 2 Part Number 085 019 755 085 029 600 243 926 002 274 172 001 272 963 002 269 037 001 269 043 001 248 411 006 085 024 138 085 024 1...

Page 35: ...Woodruff Key 3 8 X 112 X 375 Wide 15 2 A 408 324 5 Key Eccentric 16 1 D 262 992 5 Shaft 17 2 C 243 595 11 Piston Slide 18 4 B 297 857 4 Hinge Bar 19 1 C 252 459 1 Solid Eccentric 20 1 A 268 788 1 Hin...

Page 36: ...118 Long 085 021 037 Flow Indicator 085 036 053 Brass Pipe 112 NPT X 8 114 Long 085 035 837 Solenoid Valve 112 IPS 220 240V 085 029 430 Solenoid Valve Coil 220 440V 50160 CY 085 029 427 Sol Valve Coil...

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