Operations & maintenance manual – ASTRA evo (DDE)
ARGALAIR 2020 | Rev. 6
23
1.8 OPERATION
•
Do
not hold the pump under pressure for a long time if the discharge valve is closed.
RISK OF
ENVIRONMENTAL CONTAMINATION.
•
Risk of harmful water hammers occurring due to incorrect or sudden operation (valves must be
operated only by trained personnel).
•
Empty and flush out fluid inside the pump in case different fluids must be pumped.
•
Insulate and empty the pump if the fluid crystallization temperature is equal to or below the ambient
temperature.
•
Stop the pump if the fluid temperature exceeded the maximum allowed temperature indicated in
the GENERAL NOTES. If the operating temperature exceeds by about 20%, it is necessary to inspect
the condition of the internal parts after pumping operation.
•
NEVER LEAVE THE PUMP
with a too hot liquid inside it.
•
Stop the pump and close the valves if leakages are observed.
•
Wash with water only if it is chemical compatibility; alternatively, use a suitable solvent that does not
generate hazardous exothermic reactions.
•
Consult the fluid supplier to decide the most suitable fire-prevention method.
•
Empty the pump if it is not in use for a long period of time (especially for fluids that tend to crystallize).
•
Check that there is no gas in the delivering fluid, stop the pump if there is (probable cavitation).
1.9 STOP OF THE PUMP
To stop the pump, operate exclusively on the air supply by closing the 3-way valve. Discharge residual
pressure from the pneumatic system of the pump.
WARNING:
Never stop the pump by completely closing the suction and/or discharge valves on
the hydraulic circuit.
DANGER: FOR LONGER STOPPAGE DO NOT TURN OFF THE PUMP BY CLOSING THE DISCHARGE: THE PUMP
COULD REMAIN IN PRESSURE WITH THE RISK OF ENVIRONMENTAL CONTAMINATION!
WARNING:
During the pump stopping operations, attention that the fluid not be spreaded in the
environment.
Содержание ASTRA Evo DDE 030
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