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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 115 psi (7 bar) air supply.
The total hydraulic pressure (differential pressure + system) should never
exceed 115 psi (7 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.
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
• 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.
FLOODED
4
855 835 R. 09/21
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
SELF-PRIMING
• Do not use a model with aluminium wetted surfaces to pump fluids for
human consumption, there is a possibility of trace contamination of lead.
• 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.
• 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
®
Santoprene
®
Viton
®
Polypropylene
DC PUMPS ARE VERY EASILY CONFIGURED AND EASY TO INSTALL.
FLOODED:
The pumping system was designed with positive pressure at the inlet. This is
the best possible installation when you need to evacuate the liquid from the
drum or tank, or when working with viscous fluids.
Not recommended for hazardous fluids.
SUBMERGED
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
-29 ºC - 135 ºC /
-20 ºF - 275 ºF
-10 ºC - 120 ºC /
-4 ºF - 248 ºF
10 ºC - 80 ºC /
50 ºF - 176 ºF
SELF-PRIMING:
Pump is designed to generate vacuum. It is
possible to evacuate all the air from a hose or
pipe without damaging the pump. Maximum
suction height is 6 1/2" (2 m), with the
suction hose empty and up to 23" (7 m) with
the hose primed. (See page 1 for corresponds
suction lift).
SUBMERGED:
All pumps can be immersed in fluids. It is
important to verify that all components that
are in contact with the fluid are chemically
compatible. In this case, air exhaust and fluid
must be carried by hoses (optional air
connection).
NOTE: Use a pressure regulator with built-in
filter inlet.
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