4
840801 R. 03/18
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
2018_03_15-12:00
EN
TROUBLESHOOTING
Symptoms
Possible Reasons
Solutions
The pump is not working or there
is no grease delivery.
Not enough air supply pressure.
Increase the air supply pressure.
Some outlet line component is clogged or closed.
Clean or open the outlet circuit.
There are air pockets in the grease inlet area.
Compact the grease.
The pump begins to operate very
fast.
The drum is empty or the grease level is beneath the
suction tube inlet.
Replace the drum or lower the suction tube until
the inlet reaches the grease level.
The pump keeps on operating
although the grease outlet is
closed.
There is a grease leakage in some point of the outlet
circuit.
Verify and tighten or repair.
Impurities in the upper valve or in the foot valve.
Dismount and clean. Replace in case of damage.
Grease leakage through the air
outlet muffler.
Grease has by-passed to the air motor caused by worn
or damaged seals (22, 23) or O ring (21).
Replace the worn or damaged parts.
The suction tube is not enough tightened to the
motor body.
Tight the threaded union. Verify always that the
O ring (21) is in its correct position.
Air leakage through the air outlet
muffler.
The sliding valve (12) does not close correctly.
Dismount and clean. Replace in case of damage.
The valve support (13) or the spring (19) are damaged. Replace the items.
The air piston (3) is damaged.
Replace it.
The O ring (5) is damaged.
Replace the Gland housing assembly.
Diminution of grease delivery.
There are air pockets in the grease inlet area.
Compact the grease.
Impurities in the upper valve or in the foot valve.
Dismount and clean. Replace in case of damage.
Diminution of grease pressure.
The high pressure cylinder (33) or the high pressure
piston (29) scratched.
Replace the items.
REPAIR AND CLEANING PROCEDURE
SEPARATE THE AIR MOTOR FROM THE PUMP
1.
Attach the pump to a vice in horizontal position, grabbing it by the suction tube.
2.
Unscrew the intake filter tube (42) from the intake filter head (39) (fig. 8).
3.
Unscrew the air motor body from the suction tube using a threaded rod (fig. 9), and pull it out until it tops. The union nut gets visible.
4.
Introduce an open end wrench in the milling of the lower part of the air piston and unscrew the nut (41) and remove the washer (40) (fig. 10).
5.
Remove the pin (25) situated in the upper part of the union nut (fig. 11) and unscrew the air motor body from the suction tube assembly.
Fig. 8
Fig. 10
Fig. 9
Fig. 11
WARNING:
Before starting any kind of maintenance or repairing, disconnect the compressed air supply and action the valve to
relieve the grease pressure.
!
