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
fluid 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 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 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.