Table of Contents
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SERVICE & OPERATING MANUAL
Model 85621 Series B
1½" Aluminum Air-Operated Double Diaphragm Pump
Table of Contents
Engineering Data and Temperature Limitations .................................................... 1
Performance Curve ............................................................................................... 2
Dimensions ........................................................................................................... 3
Metric Dimensions ................................................................................................ 4
Principle of Pump Operation.................................................................................. 5
Installation and Start-Up ........................................................................................ 5
Air Supply .............................................................................................................. 5
Air Valve Lubrication .............................................................................................. 5
Air Line Moisture.................................................................................................... 5
Air Inlet and Priming .............................................................................................. 5
Between Uses ....................................................................................................... 5
Installation Guide ................................................................................................... 6
Troubleshooting ..................................................................................................... 7
Warranty ................................................................................................................ 7
Recycling ............................................................................................................... 8
Important Safety Information ................................................................................. 8
LINCOLN Model 85621 sm-rev0510
LINCOLN • One Lincoln Way, St. Louis, MO 63120-1578 • Customer Service (314) 679-4200
U.S. Patent #
5,996,627
Other U.S. Patents
Applied for
Composite Repair Parts Drawing ........................................................................ 10
Available Service and Conversion Kits ................................................................ 10
Composite Repair Parts List ................................................................................ 11
Air Valve Assembly Drawing, Parts List, and Servicing ....................................... 12
Actuator Plunger Servicing .................................................................................. 13
Diaphragm Service Drawing ................................................................................ 14
Diaphragm Servicing ........................................................................................... 15
Pilot Valve Drawing, Parts List and Servicing ...................................................... 16
Check Valve Servicing ......................................................................................... 17
Check Valve Drawing .......................................................................................... 17
Pumping Hazardous Liquids................................................................................ 18
Converting Pump for Piping Exhaust Air ............................................................. 18
Converted Exhaust Illustration............................................................................. 18
Grounding the Pump ........................................................................................... 19
ATEX Declaration of Conformity .......................................................................... 20
CE Declaration of Conformity .............................................................................. 21
II 2GD T5
Section - B5
Page - 25B
Form # 404160
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Summary of Contents for Lincoln 85621
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Page 1: Table Of Contents
ATEX Declaration of Conformity ................20 Important Safety Information ................. 8 CE Declaration of Conformity ................21 Section - B5 Page - 25B LINCOLN • One Lincoln Way, St. Louis, MO 63120-1578 • Customer Service (314) 679-4200 LINCOLN Model 85621 sm-rev0510 Form # 404160... -
Page 3: Engineering Data And Temperature Limitations
10° to 100° C Excellent abrasion resistance. Polypropylene: 150° F -40° F 65° C -40° C Polyethylene: 180° F -40° F 50° to 140° F 82° C -40° C 10° to 60° C LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 1... -
Page 4: Performance Curve
Performance Curve, Model 85621 Performance based on the following: elastomer fitted pump, flooded suction, water at ambient conditions. The use of other materials and varying hydraulic conditions may result in deviations in excess of 5%. (17) (34) (51) (68) (85) U.S. -
Page 5: Dimensions
2 1/8 6 3/32 12 3/16 16 21/32 9 7/8 METAL MUFFLER 4 15/16 1" NPT EXHAUST PORT MODELS 85621 SERIES B DIMENSIONAL TOLERANCE: ±1/8" 3 9/16 BOTTOM VIEW 7 1/32 4 7/8 AIR INLET 3/4" NPT LINCOLN Model 85621 sm-rev0510... -
Page 6: Metric Dimensions
1 1/2" NPT FRONT VIEW SIDE VIEW SUCTION PORT 1 1/2" NPT METAL MUFFLER 1" NPT EXHAUST PORT MODELS 85621 SERIES B DIMENSIONAL TOLERANCE: ±3mm BOTTOM VIEW AIR INLET 3/4" NPT LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 4... -
Page 7: Principle Of Pump Operation
SAE 10 non- to relieve pressure in the system at 150 between uses in all cases. shifts to the opposite end of the valve detergent oil for every 20 SCFM (9.4 LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 5... -
Page 8: Installation Guide
Relief Valve CAUTION The air exhaust should be piped to an area for safe disposition of the product being pumped, in the event Provision For Return of a diaphragm failure. To Tank LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 6... -
Page 9: Troubleshooting
Refer to the Air Exhaust section of your obstruction. Check and clear all suction as calculated on the published pump SERVICE MANUAL. screens and strainers. PERFORMANCE CURVE. Pump is cavitating the fluid by fast cycling. LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 7... -
Page 10: Recycling
If noise hazards. pumping a product which is hazardous or toxic, the air exhaust must be piped to an appropriate Wear ear and eye protection. area for safe disposition. LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 8... -
Page 11: Lincoln Model 85621 Sm-Rev0510
LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 9... -
Page 12: Composite Repair Parts Drawing
END KIT Nitrile Diaphragms, Balls, and UHMW Seats. 273040 AIR END KIT Seals, O-rings, Gaskets, Retaining Rings, Air Valve, Sleeve & Spool Set, Air Valve Assembly, and Pilot Valve Assembly. LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 10... -
Page 13: Composite Repair Parts List
O-Ring 271765 Plate, Inner Diaphragm 240896 Plate, Outer Diaphragm 271806 Plunger, Actuator 240717 Ring, Retaining 271766 Rod, Diaphragm 243134 Seal, U-Cup 271767 Seat, Check Valve 271809 Washer, Flat 5/16 273020 Muffler LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 11... -
Page 14: Air Valve Assembly Drawing, Parts List, And Servicing
(with o-rings) and void factory warranty. the eight hex capscrews (items 1-F) that fasten with the remaining hex capscrews. fasten the end caps to the valve body. LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 12... -
Page 15: Actuator Plunger Servicing
To remove the bushings (item 7), first remove the retaining rings (item 31) by using a flat screwdriver. NOTE: It is recommended that new retaining rings be installed. Step #3: Re-install the pilot valve LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 13... -
Page 16: Diaphragm Service Drawing
Diaphragm Service Drawing LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 14... -
Page 17: Diaphragm Servicing
DO NOT USE A WRENCH ON THE to the diaphragm rod to 500 in. lbs. DIAPHRAGM ROD. FLAWS ON THE (56.5 Newton meters). SURFACE MAy DAMAGE BEARINGS AND SEALS. LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 15... -
Page 18: Pilot Valve Drawing, Parts List And Servicing
Use air inlet gasket (item 18). The pilot valve if necessary. BP-LS-EP-2 multipurpose grease, or assembly (item 4) can now be removed equivalent. for inspection and service. LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 16... -
Page 19: Check Valve Servicing
The pump can now be reassembled, r e c o n n e c t e d a n d r e t u r n e d t o operation. LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 17... -
Page 20: Pumping Hazardous Liquids
1) has 1" NPT threads for piped exhaust. 1" DIAMETER AIR On ATEx compliant units the EXHAUST PIPING LIQUID pump comes equipped with LEVEL a standard metal muffler SUCTION LINE Illustration #3 LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 18... -
Page 21: Grounding The Pump
Take action to prevent static sparking. Fire or explosion can result, especially when handling flammable liquids. The pump, piping, valves, containers or other miscellaneous equipment must be grounded. LINCOLN Model 85621 sm-rev0510 Form # 404160 Page 19...
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