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AiR OPeRATed sTAiNless sTeel PumP
PART NO 12740-41/12745-46 / ART.NR. 12740-41/12745-46
Manual 22770_EN_SE_1D
4.2. Exchange of packings in outlet body
Fasten he lower part of the air motor into a vice with pump tube in horizontal position. Loosen the four lower screws (Pos 29)
and pull off the air motor with the complete valve mechanism. Release the piston (Pos 5) from the central bar (Pos 15).
Disassemble the entire fluid part by releasing the lock nut packing screw (Pos 11) and unscrew the complete "wet" part. It is
now possible to inspect the upper packing (Pos 7).
Fasten the stainless outlet body into a vice. Unscrew the pump tube (Pos 20). Pull the central bar (Pos 15) out through the
Teflon packing kit (Pos 12). Inspect all working surfaces and replace all worn or damaged parts. Be very careful when
handling the Teflon packings, they are very easy to damage and run.
4.3. Pump mechanism
First carry out the first 2 steps in "Exchange of packings in outlet body", see above.
Fasten the stainless outlet body into a vice. Unscrew the pump tube (Pos 20). Pull the central bar (Pos 15) out through the
Teflon packing kit (Pos 12).
Inspect the piston (Pos 19) and replace the packing (Pos 23) if necessary.
Be careful to avoid any dirt getting in and around the piston assembly. Replace all parts that are worn or damaged.
If you suspect dirt in the bottom valve (Pos 21) unscrew it for inspection. If the bottom valve is removed the O-ring (Pos 22)
must be replaced.
If the pump tube is removed from the outlet body the O-ring (Pos 16) must be replaced.
Do not over tighten the bottom valve or pump tube when reassembling. The O-rings will seal against leakage.
5.
(EN) Trouble shooting
5.1. Pump stationary or run very slowly.
1.
No or low air pressure.
2.
Faulty air motor.
3.
Blocked air inlet filter.
4.
Ice blocking air exhaust.
5.
Foreign object jamming movement of central bar.
5.1.1.
Solution
1.
Check the air line valve, regulator and quick coupler.
2.
Check air motor mechanism. See service "Air motor". Check seals and replace faulty parts. Try to restart motor by
pushing the lower servo piston with a screwdriver or similar tool through the hole in the bottom cover.
3.
Change or clean the air inlet filter
4.
Check for possible condensate in air filter, or if the pump has "raced" that there is no leakage in the pipe work.
5.
As above. Check for free movement and foreign objects in piston valve etc.
5.2. Pump reciprocating but not delivering
1.
No fluid.
2.
Foot valve inoperative.
3.
Piston valve or seals worn out.
5.2.1.
Solution
1.
Check fluid level in drum or tank.
2.
Check spring and ball for correct operation and seating. Check for foreign object jammed in foot valve.
3.
Check for foreign objects in piston valve seat. Check seals for wear and damage
5.3. Fluid coming out from the "leakage" hole in the locking nut.
1.
Packing in outlet body is worn or damaged.
5.3.1.
Solution
1.
Change packings. See service "Exchange of packings in outlet body".
4
EUROLUBE EQUIPMENT
205149
www.eurolube.com
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5(11)
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