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L12 – User manual – English (EU) – 29/10/2019 - ISSUE 1
Ensure that the consumable liquid (foam concentrate) is not
subject to temperatures below 5 degrees centigrade at any
time.
Ensure that both the L12 and its water tank are securely
attached to the transport vehicle. It is the responsibility of
the vehicle driver to ensure that any load is secure and that
any payload restrictions are observed. You can refer to
section 14 for more information on transport.
NEVER OPERATE THE L12 WITHOUT FOAMSTREAM®
CONCENTRATE
4
Product description
The L12 weed control unit consists of:
Foamstream® L12
•
Water tank
•
•
Hose reel (20 metres)
Weeding lance
•
The L12 houses a diesel-powered boiler, a petrol-powered
engine, itself connected via belt drive to a piston pump and
an alternator, a 52 litres diesel tank, and a slot for a
Foamstream® concentrate can.
Water is pumped into the boiler, and when it reaches 95
degrees centigrade, the indicator light goes green, indicating
that it is hot enough for weeding. The water flows from the
boiler (12 l/m @ 12 bar) and a venturi mixer opens to allow
Foamstream® concentrate to be injected at a ratio of
approximately 99.5 parts water to 0.5 parts concentrate. Air
is added to the water and Foamstream® mix as it exits the
lance to create the foam.
Figure 1 - L12
The L12 has been designed to require no manual input or
adjustment (See section 0 for operating details).
A safety valve and over-temperature sensor ensure that
internal pressure and temperature will not exceed 120 bar
or 120 degrees centigrade in the event of a system fault.
Filters are fitted to the diesel, water and foam systems to
ensure supplies are kept clean and free from debris. These
needs to be checked daily (see section 6). The engine has
an integrated petrol filter.
6
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