Product Manual

4
Description
Water supply system
The water is fed under pressure (2 - 8 bar) to the HP pump. Then the water is fed
under pressure from the HP pump to the safety spray lance. The high pressure jet
is formed by the nozzle at the end of the lance.
The machine can only be operated when the safety trigger is squeezed.
When the lever is squeezed, the spray gun opens. The liquid is then pumped to the
nozzle.
When the trigger is released, the spray gun closes and any further spraying of
liquid from the lance is stopped and the manometer must show 0 bar.
The increase in pressure when the spray gun is closed causes the unloader valve-
safety valve to open. The pump remains switched on and continues to pump liquid
through the pump at reduced pressure. When the spray gun is opened, the
unloader valve - safety valve closes and the pump ressumes pressure spraying
from the lance.
The spray gun is a safety device. Repairs should only
be performed by qualified persons. Should replacement
parts be required, use only components authorized by
the manufacturer.
Lance with spray gun
The unloader valve - safety valve protects the machine from a build up of excess
pressure, and is designed not to permit an excess pressure to be selected for
operation. The limit nut on the handle is sealed with a spray coating.
The operating pressure and spray rate can be steplessly adjusted by turning the
handle.
Replacements, repairs, new adjustments and sealing
should only be performed by qualified persons.
Unloader valve - safety valve
Environmental, refuse disposal and water
protection regulations must be observed !