Lincoln 85250 Owner's manual

Page
Section - F40
- 31C
Form 404308SEPT - 2011
Models No. 85250 & 85252
AIR OPERATED EJECTOR
OWNER/OPERATOR MANUAL
It is the responsibility of the Owner/Operator to properly use and maintain this equipment.
The Instructions and Warnings contained in this manual shall be read and understood by the Owner/Operator prior to operating
this equipment.
It is the responsibility of the Owner/Operator to maintain the legibility of all Warning and Instruction labels.
The Owner/Operator shall retain this manual for future reference to important Warnings. Operating and Maintenance
Instructions.
DO NOT exceed the stated maximum working pressure of
the elector or of the lowest rated component in your system.
DO NOT alter or modify any part of this equipment.
DO NOT operate this equipment with combustible gas.
DO NOT attempt to repair or disassemble the equipment
while the system is pressurized.
TIGHTEN all uid connections securely before using this
equipment.
ALWAYS read and follow the fluid manufacturer’s
recommendations regarding uid compatibility, and the use
of protective clothing and equipment.
CHECK all equipment regularly and repair or replace
worn or damaged parts immediately.
IMPORTANT: Failure to heed these warnings including
misuse, over pressurizing, modifying parts, using
incompatible chemicals and uids, or using worn or
damaged parts, may result in equipment damage and/or
serious personal injury, re, explosion, or property damage.
One Lincoln Way
St. Louis Missouri 63120-1578
[phone]
Copyright 2011
Printed in USA.
Model 85250: Used with EPDM Compatible Materials.
Model 85252: Used Specically with Petroleum Based
Materials.
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Page Number - 2 Form 404308
BEFORE CONNECTING
EJECTOR TO AIR LINE
Airline lubrication is necessary for the
proper performance and life of this ejector
Be sure that the proper airline filter.
lubricator and regulator can supply the
volume of air necessary to operate the
ejector at the speed required.
OPERATING PRECAUTIONS
Use Lincoln replacement parts to assure
compatible pressure rating.
Heed ALL warnings.
ALWAYS check equipment for proper
operation before each use, making
sure safety devices are in place and
operating properly. DO NOT alter or
modify any part of the equipment as
this may cause a malfunction and
result in serious bodily injury.
DO NOT OPERATE Ejector in excess of
recommended pressure range.
NOTE: A 24” length of 1/2” I.D. hose
must be used at the material inlet to
prevent hydraulic lock which may
occur if rigid piping is used.
ALWAYS read and follow the
uid and solvent manufacturer’s
recommendations regarding the
use of protective clothing and
equipment.
To reduce the risk of serious bodily
injury or property damage. NEVER
exceed the maximum air or uid
working pressure of the lowest
rated system component.
OPERATION
Model 85250 Ejector incorporates an inline
double povver air cylinder which produces
a 35:1 ratio during the dispense cycle. This
is achieved through special porting through
the upper piston rod which allows air to ow
and pressurize the top sides of the pistons.
When the Ejector is pressurized to dispense
material, air should also be vented from the
bottom of the lower piston. The bottom of the
upper piston is never pressurized because
of a small hole in the upper cylinder wall
which exposes it to ambient pressure. As
the Ejector continues its dispense stroke,
it’s travel is limited by the adjustment screw.
When the Ejector is retracted, air is
vented from the tops of the two cylinders
and pressure builds under the lower
piston. When the Ejector is fully retracted,
pressurized material enters the material
inlet and rells the void of the pumping
chamber just in front of the plunger.
The Ejector is now ready for another
dispense stroke.
SERVICE AND
DISASSEMBLY PROCEDURE
Always disconnect air supply to
Ejector and relieve pressure before
checking, servicing, or repairing
any part of Ejector.
TOOLS REOUIRED
1.7/16 Open End Wrench
2. 1/2” Open End Wrench
3. 5/8” Open End Wrench
4. 3/4” Open End Wrench
5. 7/8” Open End Wrench
6. 1-1/2” Open End Wrench
7. Pliers
Disassembly of
Air Components
1. Remove the four Bolts and Lock-
washers (Items 2 & 3).
2. Lift the Top Plate and Gasket off
(Items 4 & 5) Gasket must be
replaced.
3. Remove the top Air Cylinder
(Item 6).
4. Hold the top of the Plunger (ltem 21
with a 1/2” wrench through the slot ted
holes in the Cylinder (Item 16) while
removing the top piston Bolt (Item 1).
5. Remove the Spacer (Item 8).
6. Remove the top Piston and 0-ring
sub-assembly (Items 7, 9 & I 0).
7. Hold the center Cylinder (Item 30)
while lifting off the center divider
Plate and 0-ring subassembly
(Items 11 & 12) and upper Piston
Rod (Item 13).
8. Remove the upper piston rod from the
center divider plate.
9. Remove the center Cylinder (ltem 30)
which will include the lower Piston
and 0-ring sub-assembly (Items 7,9 &
10).
10. Remove the lower Gasket (Item 5)
for replacement.
11. Remove the lower divider Plate,
Piston Rod and Connector (Items
14,29 & 15). At this point the entire
air unit is disassembled and all
seals can be replaced if necessary.
Disassembly of
Wetted Components
1. Remove the Packing Nut and Gasket
(Items 17 & 18).
2. Remove the Bottom Plate (Item 19).
3. Remove the Packing Retainer and
U-cup (Items 28 & 20).
4. Remove the Cap (Item 27).
5. Remove the Lock Nut (Item 25).
6. Remove the Nose Adapter, Adjusting
Screw and 0-ring Sub-Assembly (Items
23. 26 & 24).
7. Turn the adjusting screw all the way in
(clockwise direction) to access the
0-ring for replacement.
8. Finally remove the Gasket (ltem 22). At
this point the wetted components should
be completely disassembled.
REASSEMBLY
To reassemble the Ejector reverse the
Disassembly Procedure.
IMPORTANT: The small holes in the upper
Piston Rod (Item 13) and the upper CyIinder
(Item 6) must be positioned towards the
Body & Plunger assembly (ttem 21) for
proper function of the Ejector.

Page Number - 3
Form 404308
1/8” NPTF
Air Inlet 2
Torque to
50-55 in. lbs.
4
3
1 Torque to
85-95 in. lbs.
5
8
76
9
12
5
7
10
11
13
10
11
9
5
14
15
29
16
1/8” NPTF
Air Inlet
17 18
19
30
20.1
20.2
28
21
1/4” NPTF
Outlet
1/4” NPTF
Inlet
22
23
Torque to
20-25 Ft. Lbs.
24
25
26
27
NOTE:
A 24” Iength of 1/2” l.D. hose must be
used at the material inlet to prevent
hydraulic lock which may occur if rigid
pipings used.
NOTES: 1. Included in 244508 Air Seal Repair Kit.
2. Included in 244509 Material Seal Repair Kit.
3. Included in 244519 Material Seal Repari Kit.
Adjustment Procedure:
Remove 16199 cap and loosen 16200 Lock Nut. Adjust
244475 adjustment screw counter-clockwise to increase output
or clockwise to decrease output. Adjustment rate is .010 in³
per turn. After completing adjustement, tighten 16200 locknut
and replace 16199 cap.
Torque to
90 - 100 Ft. Lbs.
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SERVICE PARTS
Item No. Part Qty. Description
1 244466 1 Bolt
2 244465 4 Bolt
3 66186 4 Lockwashor
4 244467 1 Top plate
5 (Notes 1 & 2) 3 Gasket
6 243505 1 Air cylinder
7 243437 2 Piston
8 244468 1 Spacer
9 (Note 1) 2 O-ring (Buna-NI
10 (Note 1) 2 O-ring (Buna-N)
11 (Note 1) 2 O-ring (Buna-N)
12 244470 1 Plate
13 244472 1 Piston rod
14 244469 1 Plate
15 13129 1 Conneclor
16 244476 1 Cylinder
17 243441 1 Packing nut, 1.500 Hex
18 (Note 2) 1 Gasket
19 243431 1 Bottom plate
20.1© (Note 2) 1 U-cup (Polyurethane/EPDM)
20.2© (Note 3) 1 U-Cup (Polyurethane/Nitrile)
21 244510 1 Body & plunger
22 (Note 2) 1 Gasket
23 244414 1 Nose adapter
24 (Note 2) 1 O-ring (Viton)
25 16200 1 Locknut
26 244475 1 Adjustment screw
27 16199 1 Cap
28 243439 1 Packing Retainer
29 244477 1 Piston rod
30 244471 1 Air cylinder I.D. 2.378/2.372
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Page Number - 4 Form 404308
NOTE:
A24” length of 1/2” I.D. hose must be
used at the material inlet to prevent
hydraulic lock which may occur if rigid
piping is used.
SPECIFICATIONS
Priming Pressure
Air Pressure
Output Per Cycle
Ratio
Adjustment Rate
Max. Air Req’d./Cycle
Wetted Parts
1,500 PSI Max.
100 PSI Max.
.015 in³ to .200 in3
35:1
.010 in3 per turn
13 in³
Carbon Steel Body
Viton. Polyurethane &
EPDM or Nitrile©
3-7/8”
1”
9/32” Slots
For Mounting 2-15/16”
2-1/2”
1-1/4”
7/16”
6-7/8”
13-3/4”
RETAIN THIS INFORMATION FOR FUTURE REFERENCE
When ordering replacement parts, list: Part Number, Description, Model Number and Series Letter.
LINCOLN provides a Distributor Network that stocks equipment and replacement parts.
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