Samoa DF250 Serie Guía De Servicio Técnico Y Recambio página 6

EN
OPERATING INSTRUCTIONS
THIS PUMP IS SELF-PRIMING
To prime it the first time, you must connect the air pump supply to a low pressure using the pressure regulators while keeping the outlet valve open.
When fluid begins to flow from the pump outlet, the pump is primed. For regulation of fluid pressure, the unit must be supplied with an air pressure between 1,5 and
8 bar (22 and 115 psi). Adjust the discharge valve on the discharge side to control flow. For the performance characteristics of the pump see the capacity curve.
STOPPING THE PUMP FOR MAINTENANCE TASKS
• Close the inlet valve of the pump and stop the air supply.
• Make sure for your safety that the air valve is closed.
• Turn off the air compressor, or close the valve on the air supply side of the auxiliary equipment.
• Close the discharge valve on the discharge side, then begin to slowly open the drain valve and discharge pressure fluid.
• Open the air valve of the pump, turn on the pump and flush the remaining fluid.
• After ensuring that the pump was turned off and the pressure was released, fully open and close the regulator valve and drain valve of the pump.
GROUNDING THE PUMP
When installing the pump, be sure to perform grounding in the specified
location.
Also connect ground wires for the auxiliary equipment and piping.
Use a grounding cable of at least 12 gauge (2.0 mm2).
If the pump you have purchased is valid for Atex, a specific Atex manual will
accompany this one. Read this manual before operating the pump.
If the unit is marked with the symbol,
explosive atmospheres. Below this symbol, in the nameplate of the pump, are
indicated the areas for which the equipment is approved. You will also find the
maximum allowable surface temperature in the same plate.
WARNING
Connect grounding wires to the pump, piping and all other equipment too.
When the pump operates ungrounded or with an incorrect connection,
friction between parts and abrasion caused by some fluids that flow
inside the pump, can generate static electricity. Moreover, according to
the type of fluid pump and the installation environment (such as gases
in the air or the type of the surrounding facilities) static electricity can
cause fire or electric shock.
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855 828 R. 09/20
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
it can be used in potentially
STICKER THAT SHOWS
THE POSITION OF THE
GROUND WIRE