Samoa 404 100 Guide D'instructions Et Pièces De Rechange page 4

EN
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
although the grease outlet is
closed.
Grease leakage through the air
outlet muffler.
Air leakage through the air outlet
muffler.
Diminution of grease delivery.
Diminution of grease pressure.
REPAIR AND CLEANING PROCEDURE
WARNING: Before starting any kind of maintenance or repairing, disconnect the compressed air supply and action the valve to
!
relieve the grease pressure.
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. 9
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
Possible Reasons
Not enough air supply pressure.
Some outlet line component is clogged or closed.
There are air pockets in the grease inlet area.
The drum is empty or the grease level is beneath the
suction tube inlet.
There is a grease leakage in some point of the outlet
circuit.
Impurities in the upper valve or in the foot valve.
Grease has by-passed to the air motor caused by worn
or damaged seals (22, 23) or O ring (21).
The suction tube is not enough tightened to the
motor body.
The sliding valve (12) does not close correctly.
The valve support (13) or the spring (19) are damaged. Replace the items.
The air piston (3) is damaged.
The O ring (5) is damaged.
There are air pockets in the grease inlet area.
Impurities in the upper valve or in the foot valve.
The high pressure cylinder (33) or the high pressure
piston (29) scratched.
Solutions
Increase the air supply pressure.
Clean or open the outlet circuit.
Compact the grease.
Replace the drum or lower the suction tube until
the inlet reaches the grease level.
Verify and tighten or repair.
Dismount and clean. Replace in case of damage.
Replace the worn or damaged parts.
Tight the threaded union. Verify always that the
O ring (21) is in its correct position.
Dismount and clean. Replace in case of damage.
Replace it.
Replace the Gland housing assembly.
Compact the grease.
Dismount and clean. Replace in case of damage.
Replace the items.
Fig. 10
Fig. 11