Lincoln industrial 85250 Owner's manual

Page
Section - F40
- 31A
Form 403026
October 2000
Model No. 85250
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 fluid connections securely before using this
equipment.
ALWAYS read and follow the fluid manufacturers
recommendations regarding fluid 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 fluids, or using worn or
damaged parts, may result in equipment damage and/or
serious personal injury, fire, explosion, or property
damage.
One Lincoln Way
St. Louis Missouri 63120-1578
[phone]
Copyright 2000
Printed in USA.

Page Number - 2 Form 403026
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.
ALWAYScheckequipmentforproper
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 fluid
and solvent manufacturers
recommendations regarding the use
of protective clothing and equipment.
To reduce the risk of serious bodily
injuryor propertydamage. NEVER
exceed the maximum air or fluid
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 flow 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 refills 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
slotted 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 403026
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
28
21
1/4 NPTF
Outlet
1/4 NPTF
Outlet
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.
Item No. Part Qty. Description
1 244466 1 Bolt
2 244465 4 Bolt
3 66186 4 Lockwasher
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 0-ring (Buna-N)
10 (Note 1) 2 0-ring (Buna-N)
11 (Note 1) 2 0-ring (Buna-N)
12 244470 1 Plate
13 244472 1 Piston rod
14 244469 1 Plate
15 13129 1 Connector
16 244476 1 Cylinder
17 243441 1 Packing nut, 1.500 Hex
18 (Note 2) 1 Gasket
19 243431 1 Bottom plate
20 (Note 2) 1 U-cup (Polyurethane/EPDM)
21 244510 1 Body&plunger
22 (Note 2) 1 Gasket
23 244474 1 Nose adapter
24 (Note 2) 1 0-ring (Viton)
25 16200 1 Lccknut
26 244475 1 Adjustmentscrew
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
SERVICE PARTS
NOTES: 1. Included in 244508 Air Seal Renair Kit.
2. Included in 244509 Malerial Seal Repair 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.

Page Number - 4 Form 403026
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