Pump Reciprocating But Not Delivering; Solution; Fluid Coming Out From The Drain Hole In The Locking Nut; Pump Is Running Despite The Outlet Being Closed - Orion 22771 User Manual

Manual 22771_EN_SE_1D
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 drain hole in the locking nut.

1. Seal in outlet body is worn or damaged.
5.3.1. Solution
1. Change seals. See service "Exchange of seals in outlet body".

5.4. Pump is running despite the outlet being closed.

1. Seal on the lower piston assembly is worn out or damaged.
2. Dirt in the bottom valve or in the lower piston assembly.
5.4.1. Solution
1. Change worn or damaged parts. See service "Pump mechanism".
2. See service "Pump mechanism".
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