Argal PDA 200 Podręcznik użytkownika - Strona 9
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ascertain that the fluid treated does not contain or cannot contain large solids or solids for a dangerous shape
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ensure that the intake or delivery ports are not obstructed
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also ascertain that the connection piping is strong enough and cannot be deformed by the dampener's weight or by
the intake. Also check that the dampener is not burdened by the weight of the piping
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if the dampener is to stay in disuse for a long period of time, clean it carefully by running a non-flammable liquid
detergentthrough it that is compatible with the dampener's construction materials
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if the dampener was turned off for a long period of time, circulate clean water in it for some minutes to avoid incru-
stations
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WARNING:The use of dampeners for flammable liquids
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is forbidden if they are made of non-conductive
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materials that charge statically (plastic materials) and without suitable grounding DANGER OF EXPLOSION CAU-
SED BY STATIC CHARGES
START UP
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check the correct execution of what indicated in the INSTALLATION paragraph
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check that the intake and delivery pipes of the hydraulic circuit are correctly connected
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open the intake and delivery valves of the pump hydraulic circuit
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open the 3-way valve on the air circuit
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set the operation point requested for the pump: properly adjust the air pressure and delivery that supplies the pump.
With pressure values under 2 bar the pump may stall, with pressure values above 7 bar it is possible that brea-
kdowns and/or yields may occur with consequent spillage of the pumped fluid
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for pumps with split manifold the two pumped fluids must have the same viscosity value, very different viscosity
values may lead to stall problems and/or diaphragms breaking
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do not operate at the limits of the operation curves: the maximum head or maximum delivery (total absence of leaks
and intake height in the delivery circuit)
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check that there are no anomalous vibrations or noise due to the too elastic support structure, unsuitable fastening
or cavitation
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after 2 hours of operation stop the pump correctly and check the tightening of all the bolts on the dampener
WARNING: never start the dampener with the product valves closed: danger of diaphragm breakage
USE
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do not operate valves or shunts during the pump operation
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risk of harmful water hammers in case of incorrect or sudden operations (valves must be operated only by trained
personnel)
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empty and wash accurately inside the dampener in case different fluids must be pumped
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insulate or empty the dampener if the fluid crystallization temperature is equal to or below the ambient temperatu-
re
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stop the pump if the fluid temperature exceeds the maximum allowed temperature indicated in the GENERAL NO-
TES; if the exceeding temperature is about 20% it is necessary to inspect the status of the internal parts
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stop the pump and close the valves in case of leaks
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wash with water only if chemical compatibility allows it ; alternatively use the suitable solvent that does not generate
hazardous exothermic reactions
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consult the fluid supplier to decide the most suitable fire-prevention method
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empty the dampener in case of long periods of disuse (particularly with fluids which are particularly tending to cry-
stallize)
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check that there is no gas in the delivering fluid, if there is stop the pump
WARNING: never stop the dampener and the pump when it is running and/or when the pneumatic circuit is under pres-
sure by closing the intake and/or delivery valves on the fluid circuit: danger of premature wear and/or breakage of the
diaphragm
STOP
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To stop the pump and dampener, operate exclusively on the air supply closing the 3-way valve, discharging in this
way residual pressure from the pneumatic system of the pump.
WARNING never stop the pump and dampener by totally closing the suction and/or delivery valves of the hydraulic
circuit
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