Technical data

Aussie Pumps Bertolini Pumps Service Guidelines – July 2008
8
Downstream injector - This component
introduces a detergent downstream of the pump.
The size of the injector must be selected taking
into account the pump pressure. Refer to the
injector manufacturer for technical data. If the
injector is too small a large pressure drop will
result causing a high concentration of detergent.
If the injector is too large it will be unable to
create sufficient suction to pick up any
detergent.
Downstream injectors require low pressure to
activate the chemical flow. Approximately 200psi
is sufficient. A double nozzle or lance enable
both a low pressure and high pressure spray tip
to be mounted. This allows the detergent to be
applied at low pressure and conveniently
removed at higher pressure. An adjustable
nozzle may also be used to the same effect.
High pressure hose - Ensure that high
pressure hose in your system is compatible with
any chemicals you may be using.
Do not use hose clamps to secure the hose as
they may be dislodged under pressure. Snap
couplings are safer and also more convenient
for the operator. Check couplings regularly for
leaks and replace if necessary with Aussie brass
snap couplings rated to 4060psi. For super high
pressure applications we recommend Aussie >H=
Series ST couplings rated to 5200psi.
Avoid an unnecessarily long high pressure hose
to prevent pressure accumulation when
releasing the gun trigger and to minimise
operating pressure loss.
Spray gun - The gun must be selected to
withstand operating pressure, volume,
temperature and chemicals in the system. A
professional gun should be selected such as
Aussie Series. The gun selected should also be
comfortable to use to reduce operator fatigue.
INSTALLING YOUR COMPONENTS
Install all components according to
manufacturer=s recommendations to ensure
operator safety, to avoid property damage and
to ensure efficient system operation.
Any plumbing and component parts must be the
same size or larger than the inlet and outlet of
the pump. The thread sizes are a guide to the
required sizes of plumbing for correct water flow.
Minimise bends and other restrictions in hoses
and other plumbing. This will ensure maximum
efficiency of the motor or engine and reduce
turbulence and cavitation which may damage
system components.
It is important that the air is prevented from
entering the system. Air leaks will cause a
reduction in pressure, excessive noise and
increased pump wear.
It is recommended that a thread sealant be used
on all connections before tightening securely.
Hose clamps are not acceptable as they are
susceptible to leaks and fail under pressure.
Mount the motor/engine so that the rotation of
the pump crankshaft is counterclockwise as you
face the pump crankshaft. The rotation of a
petrol engine varies according to manufacturer.
Check the specifications before assembling. In
most cases electric motors may be operated in
either direction according to the wiring. Check
the manufacturer=s specifications before
connection.
Caution - Electrical components should only be
installed by a qualified professional. Water and
electricity are a dangerous combination. All
electrical components should be watertight.
Never allow a spray or leak to contact any
electrical component. This could cause serious
injury.
Never introduce acids, caustic substances or
abrasive liquids into to pressure system. Such
substances entering the system will damage
pump and other components and will void any
guarantee.
If necessary the pump and system should be
protected from freezing.
BIG BERTIES ARE BEAUT!
A
ussie Pumps Bertolini Pumps Service Guidelines – July 2011