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OPERATION
This pump is self–priming. To prime it the first time, it is convenient to
connect the air supply to the pump while keeping the outlet valve opened,
and increase the air pressure slowly from 0 to the desired pressure by using
a pressure regulator.
Once grease starts flowing through all the outlets, the pump is primed.
The pump starts to pump when an outlet valve is opened.
NOTE: It is important that the foot valve do not come in contact with dirty areas,
TROUBLESHOOTING
Symptoms
The pump is not working or there is
no grease delivery.
The pump begins to operate very fast.
The pump keeps on operating al-
though the grease outlet is closed.
Grease leakage through the warning
hole on pump body (63)
Air leakage through the air outlet muffler
(22).
Grease output too low or diminishes
over time.
4
853 864.300 R. 09/23
Samson Corporation • 90 Monticello Rd. Weaverville, N.C. 28787 • Phone (828) 686-8511 • Fax (828) 686-8533
Possible Reasons
No suitable air supply pressure.
Some outlet circuit element is clogged or closed.
There is an air pocket in the grease inlet area.
The drum is empty or the grease level is beneath the
suction tube inlet.
There is a grease leakage at some point in the circuit.
Contamination in the upper valve.
Contamination in the foot valve.
Scratched piston rod (51) or worn or damaged seals
(54, 56, 59).
Damaged or worn piston O ring (36).
The air seals (6, 10) of the inverter assembly are damaged
or worn.
Damaged or worn spool (18) seals.
Contamination in the foot valve.
Contamination in the upper valve.
The exhaust muffler is clogged by compressed air dirt or
lubricant.
such as a workshop floor, because it may become contaminated with dirt or other
particles that can damage the seals.
Increase the air supply pressure.
Clean or open the outlet circuit.
Stir and repack the grease.
Replace the drum or insert the suction tube until
the inlet reaches the grease level.
Verify and tighten or repair.
Disassemble and clean. Replace if damaged.
Disassemble and clean. Replace if damaged.
Verify the piston rod (51) and replace damaged
/ worn parts.
Replace O Ring (36).
Replace the air seal (6, 10).
Replace the spool (18).
Remove and clean. Replace if damaged.
Remove and clean. Replace if damaged.
Replace the muffler felt (25, 27).
Solutions
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