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Mounting
The pump exhaust air may contain
contaminants. Ventilate the remote area.
See Air Exhaust Ventilation on page 8.
Never move or lift a pump under pressure. If
dropped, the fluid section may rapture. Always
follow the Pressure Relief Procedure on page 10
before moving or lifting the pump.
1. Be sure the mounting surface can support the
weight of the pump, hoses and accessories, as
well as the stress causes during operation.
2. Make sure the surface is flat and that the pump
doesn't wobble.
3. For ease of operation and service, mount the
pump so fluid inlet and fluid outlet ports are
easy accessible.
Grounding
The equipment must be grounded. Grounding
reduces the risk of static and electric shock by
providing an escape wire for the electrical current
due to static build up or in event of a short circuit.
In the side housing a grounding connection is
included.
Check your system electrical continuity after the
initial installation. Set up a regular schedule for
checking continuity to be sure proper grounding in
maintained.
Please note that the center housing is available
in two materials of which only PE is conductive.
NEVER use a non-conductive pump with non-
conductive flammable fluids. Follow your local fire
codes. When pumping flammable fluids, ALWAYS
ground the entire fluid system as described.
Air line
See on recommended installation drawing on page 7.
1. Install an air regulator and gauge. Set pressure
of the driving air should be limited to the
pressure required pressure required to run the
pump on the desired working point. Setting
the pressure too high will cause higher wear
of the pump and will increase the compressed
air consumption. The fluid stall pressure will be
same as the setting of the air regulator.
21-VA-MA_Manual_HC-PURE FD _en.indd 8
21-VA-MA_Manual_HC-PURE FD _en.indd 8
2. If the air regulator do not have a bleed of
function to relieve trapped air, or the air regulator
is not placed closed to the pump, locate a
bleed-type master air-valve close to the pump.
Be sure the valve is easily accessible from the
pump.
MPa/bar/PSI
Trapped air can cause the pump to cycle
unexpectedly, which could result in serious injury
from splashing.
3. A throttle valve can be used to regulate the flow
rate of compressed air to the pump. By using a
throttle valve it is possible to regulate the pump
speed even at the lower end of the curves.
4. Install a grounded, flexible air hose between the
accessories and the pump air inlet. The inner
diameter of the house have to be the same
diameter of the air connection of the pump or
bigger.
Air exhaust ventilation
Do not restrict the air exhaust port. Excessive
exhaust restriction can cause erratic pump
operation. At a diaphragm rapture, it is possible
the pumped liquid will escape through the muffler.
To prevent this, the operational diaphragm
monitoring and barrier chamber can be used.
Another possibility is to remote the air exhaust 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.
The hoses should be grounded.
3. For sealing use an appropriate sanitary gasket
compatible with the connections of pump.
4. Use a suction line which can stand vacuum. By
the pumping action, vacuum will be created at
the suction side of the pump.
5. The inner diameter of the hose should be equal
to the connection diameter of the pump.
6. 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
21-VA-MA_Manual_HC-PURE FD _en | 26.05.2023
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26-05-2023 09:43
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