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6.5 USE
• Do not operate valves or shunts during the pump operation.
• Risk of harmful water hammers in case of incorrect or sudden operations (valves must be operated
only by trained personnel).
• Accurately empty and wash accurately inside the pump in case different fluids must be pumped.
• Insulate or empty the pump if the fluid crystallization temperature is equal to or below the ambient
temperature.
• Stop the pump if the fluid temperature exceeds the maximum allowed temperature indicated in the
GENERAL NOTES; if the exceeding temperature is about 20% it is necessary to inspect the status of
the internal parts.
• Stop the pump and close the valves in case of leaks.
• Wash with water only if chemical compatibility allows it; alternatively use a suitable solvent that does
not generate hazardous exothermic reactions.
• Consult the fluid supplier to evaluate the most suitable fire-prevention method.
• Empty the pump in case of long periods of non-operation (particularly with fluids which have a
particular tendency to crystallize).
• Check that there is no gas in the delivering fluid, if there is stop the pump.
6.6 STOP
To stop the pump, exclusively operate the air supply, which closes the 3-way valve, in this way dischar-
ging residual pressure from the pneumatic system of the pump.
WARNING:
• Never stop the pump by completely closing the suction and/or delivery valves of the hydraulic circuit.
• It is prohibited to stop the pump by means of completely closing valves in the suction and / or di
scharge of the hydraulic circuit.
7. MAINTENANCE
• All the operation must be carried out by qualified personnel.
• Do not carry out maintenance and/or repairs with the air circuit under pressure.
• Carry out periodic inspections (2 - 30 days in accordance with the fluid pumped) to check the cleanli
ness of the filtering elements.
• Carry out periodic inspections (3 - 5 months in accordance with the fluid pumped and with the envi
ronmental conditions) to ensure correct operation of the system's start/stop units.
• The presence of fluid under the pump casing may indicate pump failures.
• Damaged parts must be replaced with complete original parts and not with repaired parts.
• The replacement of damaged parts must be carried out in a clean and dry environment.
7.1 RECOMMENDATIONS
WARNING: Before performing any maintenance or repair work on the pump, disconnect the pump
from the air supply line. Disconnect the hydraulic connections and discharge the product that is being
pumped.
Operating Instructions Diaphragm Pumps
GB
