VA-C_man rev01-2016_VI_(uk) | 1.02.2017
9
Air Exhaust Ventilation
Do not restrict the air exhaust port.
Excessive exhaust restriction can cause
erratic pump operation. At a diaphragm
rupture, it is possible the pumped liquid will
escape through the muffler. To prevent this
the air exhaust need to be remote to a safe
environment.
Fluid suction line
1. A shut of valve should be installed just
before the pump to isolate the pump
from the system for maintenance and
installation.
2. Always use a flexible connection to avoid
vibrations being brought into the piping
system.
3. Use a suction line which can stand
vacuum. By the pumping action, vacuum
will be created at the suction side of the
pump.
4. The inner diameter of the hose should be
equal to the connection diameter of the
pump.
5. If the inlet pressure to the pump is more
than 25% of the outlet working pressure,
the ball check valves will not close fast
enough, resulting in inefficient pump
operation and is a possible cause of noise.
6. Inlet pressure greater than 1 bar (15
PSI), diaphragm life will be shortened.
Fluid outlet line
1. A shut of valve should be installed just
after the pump to isolate the pump
from the system for maintenance and
installation. A drain valve should be
installed to relief the pressure of the
pump before starting maintenance work
at the pump.
2. Always use a flexible connection to avoid
vibrations being brought into the piping
system.
Fluid inlet and outlet ports
VA-C series of pump are having the suction
and discharge connections integrated in the
center block. Suction connection is horizontal
and discharge vertical. Pay attention to this
configuration as this is only valid for correct
pump function.
Installation remarks
1. VA-C pumps must be installed load free
to avoid possible damage of pumps
and/or installation.
2. VA-C pumps will be delivered with blind
plugs to prevent dust or other materials
to enter the pump. Those plugs have to
be removed before installing the pump!
3. As UV – radiation can damage
Polyethyene. This must taken in account
by installing VA-C pumps are made out of
Conductive PE.
4. The air-valves used in VA-C pumps are
manufactured with tight tolerances.
They should be used with clean, dry and
oil-free compressed air. If the quality of
the compressed air at the place where
the pump is installed is not optimal, it is
possible to install a dryer and/or a water
separator. Please contact your distributor
for more detailed information.
Figure 2
Discharge
Suction
