Samoa DF250 Manual página 13

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The air sensors are on the inside part o the diaphragm covers. To access
them, ollow the procedure or "Replacing diaphragms".
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
Repair and maintenance procedures
Ball valves replacement
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Air sensor (only for models with directional valve)
1. Close luid valves.
2. Drain the luid rom inside the pump. Anticipate a drainage o luid
rom inside the pump.
3. Loosen the screws to remove the directional valve. Take special care with
the seals.
4. Remove the valve cover by loosening the screws with an Allen
wrench. Take note o the orientation o the cap, as it is critical to
replace it correctly during reassembly.
5. Install a new set o valves according to these assembly drawings.
Ensure that the ball guides are assembled, and tighten the screws
with a maximum torque (see torque table page 11).
6. Assemble the directional valve with being care ul not to damage
the O-rings and tighten the screws with a maximum torque o
132 lb ·in (15 N·m).
Once removed the covers ollowing procedure:
1. Remove the side cover
2. Remove the two screws that secure the air sensor to the top.
3. Remove all components o the sensor. Clean the area.
4. Introduce new components in the order shown.
5. Fit the remaining components in reverse order. Fit the side cover and
tighten the screws.
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