Samoa 530610 Guía De Servicio Técnico Y Recambio página 3

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 gun
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, for example
a grease control gun.
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 or the leakage warning hole on
the pump body (44).
Air leakage through the air outlet muffler
(55).
Grease output too low or diminishes
over time.
REPAIR AND CLEANING PROCEDURE
WARNING: Before starting any kind of maintenance or repair, disconnect the compressed air supply and open the valve to relieve the
!
grease pressure.
SEPARATE THE AIR MOTOR FROM THE PUMP
1. Fix the pump horizontally in a vice (Fig.4). Tap with a hammer on the upper pipe (68) near the junction with the body (44) to break the thread
sealant.
2. Unscrew the choke nut (78) and remove it (77).
3. Place a long sturdy bar or tube (to act as a lever) at the material outlet, and use it to uncouple the motor.
4. Once unscrewed, pull the motor until you can see the pin (35) on the rod (34).
Using a hammer and a hammer driver, remove the pin (35). The motor is now loose.
78 77
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
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. Verify and tighten or repair.
Contamination in the upper valve.
Contamination in the foot valve.
Grease has passed over to the air motor caused by
scratched piston rod (34) or worn or damaged seals
2x(39).
Damaged or worn piston O ring (31).
Damaged or worn spool seals.
Contamination in the foot valve.
Contamination in the upper valve.
The exhaust muffler is clogged by compressed air
dirt or lubricant.
NOTE: It is important that the foot valve do not come in contact with dirty
areas, such as a workshop floor, because it may become contaminated with
dirt or other particles that can damage the seals.
Solutions
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.
Disassemble and clean. Replace if damaged.
Disassemble and clean. Replace if damaged.
Verify the piston rod (34) and replace damaged
/ worn parts.
Replace O Ring (31).
Replace seals 4x(11), (12) and (13), or replace
instead the full assemled spool (539505)
(recommended).
Remove and clean. Replace if damaged.
Remove and clean. Replace if damaged.
Replace the muffler felt (53).
68
44
35 34
Fig. 4
R. 03/22 853 823
EN
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