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WARNINGS AND CAUTIONS
In this document you will find warnings and cautions for installation, use and maintenance of the pumps.
Here's the meaning of symbols you may find in this document and general warnings that you should keep in mind.
WARNING: This symbol aware that there is a danger of serious bodily injury or death if you ignore the warning described.
CAUTION: This symbol aware that there is a danger of personal injury or property damage if you ignore the caution described.
WARNING: CAREFULLY READ THE INSTRUCTIONS AND WARNINGS BEFORE OPERATING THE EQUIPMENT!
• This equipment is for professional use only.
• Do not degrade the integrity of the equipment. Use only original
replacement components from Samoa Industrial, S.A.
• Fluids not suitable for the pump can cause damage to the pump unit
and involve risk of serious personal injury. Always consult Samoa
Industrial, S.A. if you have any questions about the compatibility within
the fluids and the pump materials, including elastomers.
• Install and use the pump according to all local and national regulations
and abide all health and safety laws or legislation.
• The pump can produce fluid pressures equal to the air supply pressure.
Do not exceed the maximum allowable pressure of 120 psi (8 bar) air
supply. The total hydraulic pressure (differential pressure + system)
should never exceed 120 psi (8 bar).
• Never use a pump that leaks, that is damaged, that is corroded or
otherwise it may lack the capacity to contain the fluid.
• Frequently check that the bolts on the diaphragm cover of the pump
are torqued correctly.
• Do not use a model with aluminium wetted surfaces to pump fluids for
human consumption, there is a possibility of trace contamination of lead.
DESCRIPTION
Air operated double diaphragm pumps are air-powered, reciprocating
positive displacement pumps with two pumping chambers. Two
diaphragms, centrally located in the chambers, separate the compressed
air (dry side) from the fluid being pumped (wet side). A shaft transmits
the reciprocating motion of one diaphragm to the other. A directional
valve alternatively distributes the air from one chamber to the other; thus
a reciprocating movement of the diaphragms is created. With each
stroke, fluid is discharged by one of the diaphragms whilst the opposite
diaphragm sucks new fluid into the expanding chamber. Check valves,
two on the discharge side and two on the suction side, control and direct
the fluid flow.
INSTALLATION
INSTALLATION RECOMMENDATIONS
• Remove the pump from its package and install it on the chosen location.
• Try to minimize the suction head. Install the pump as close as possible to the fluid being pumped.
• Remember to have enough space around the pump to perform maintenance tasks.
• Keep in mind to connect the inlet and outlet of the pump correctly.
• In case of diaphragm pump failure, the air exhaust will expel the product being pumped.
• When the pump is installed in a place where a spill of fluid can cause an environmental impact, the exhaust should be directed to a place.where
this spill could be contained.
• When installing the pump in its place, use brackets to secure its base.
• Fasten all bolts with the torques contained in this manual.
4
855 859 R. 05/22
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
• Danger of explosion if used 1,1,1-trichloroethane, methylene chloride
or other halogenated hydrocarbon solvents with aluminium wetted
materials. It could cause serious injury and property damage.
• Inside the pump, diaphragms separate the fluid that is being pumped
from the air supply. If a diaphragm breaks, the fluid can leak out of the
air exhaust and contaminate the environment.
• When handling hazardous fluids, always route the air exhaust into a
suitable container and locate it in a safe place. (Optional conection
system at customer's request. Not supplied with the unit).
• When the fluid source level is situated higher than the pump, (flooded
suction), the outlet tank must be at a higher level than the product to
prevent spills.
• For pumps handling hazardous fluids that are a danger to humans or
to the environment, install a suitable container surrounding the pump
to prevent any leaks or spills.
• Ensure that the operators of this equipment are trained on the
operation and limitations. Use safety equipment as safety goggles or
other equipment required.
MATERIAL
PTFE
NBR
Acetal
Hytrel
®
Neopreno
Santoprene
®
Viton
®
Polypropylene
TEMPERATURE RANGE
5 ºC - 105 ºC /
41 ºF - 221 ºF
10 ºC - 80 ºC /
50 ºF - 176 ºF
10 ºC - 90 ºC /
50 ºF - 194 ºF
10 ºC - 90 ºC /
50 ºF - 194 ºF
-18 ºC - 93 ºC /
0 ºF - 200 ºF
-29 ºC - 135 ºC /
-20 ºF - 275 ºF
-10 ºC - 177 ºC /
-4 ºF - 351 ºF
10 ºC - 80 ºC /
50 ºF - 176 ºF
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