7
Mode of operation of the safety equipment:
The safety control block returns impermissibly high gauge pressure to the suction line of the pump via a bypass line
without residual pressure.
The safety valve is responsible for preventing impermissibly high gauge pressure. When actuated, the exiting liquid
is channelled off harmlessly.
The flow monitor switches the fuel supply of the oil burner off with a solenoid valve in the case of a water shortage.
This prevents the heat exchanger from overheating.
The thermal fuse switches off the machine if an existing safety device fails and a water shortage occurs
simultaneously. In order to restart the machine after the thermal fuse has been actuated, the fuse must be replaced.
The safety equipment are lead-sealed and may not be adjusted.
2 Control and Operation
2.1 Important note on work safety
For your own safety
The machine may only be used by
persons instructed in its operation
and expressly charged with its use.
Despite its simple operation, the
unit is not suitable for use by
children.
Never direct the stream at persons
and never reach into it.
DANGER OF INJURY!
Wear protective clothing, shoes with
non-slip soles, eye protection and
possibly also face protection.
Never use the machine when other
persons are in the work area.
When operating the machine,
backlash forces result at the spraying
device, and with the spray lance
angled downward torque is also
produced. Therefore, hold the
spraying device firmly with both
hands.
The operating unit of the spraying
device may not be locked in the
switched-on position.
To protect from accidental use, the
operating unit of the spraying device
must be locked during interruptions
in work.
IMPORTANT!
Materials containing asbestos and
other hazardous substances may
not be sprayed.
Use only tested Wap high-pressure
safety hoses approved for use with
the machine. These correspond to
the German „Richtlinien für
Flüssigkeitsstrahler“ (Guidelines for
Liquid Sprayers) and are marked
accordingly.
Do not kink, pull, twist, crush or run
over high-pressure hoses. Never
work with a damaged high-pressure
hose. Replace damaged hose
immediately with a genuine Wap
spare part.
Hoses may only be connected by
the manufacturer, supplier or an
expert.
Set up the machine as far as possible
from the object to be cleaned.
When using cleaning and care
agents, the manufacturer’s
warnings must be observed.
In accordance with the Guidelines
for Liquid Sprayers, only cleaning
and care agents may be used for
which the manufacturer has no
reservations. Unsuitable cleaning
agents may endanger your health
and cause damage to the machine
and the object to be cleaned.
Therefore, use only the Wap
cleaning and care agents
recommended in these operating
instructions and matched to the
machine. Observe the
manufacturer’s safety data sheets.
Specific reference is made here to
the dangers resulting from the use
of highly flammable, combustible,
toxic, health-endangering, caustic or
irritating substances.
Please observe the German
„Guidelines for Liquid Sprayers“ and
the generally applicable local
regulations and ordinances (see
2.1.1).
Do not reach into the opening of the
exhaust outlet when closing the unit
shroud.
Use only genuine Wap accessories
and spare parts.
Heat Exchanger
Only fill with fuel when machine is
cold.
Do not touch the heat exchanger or
metal parts of the spraying device
when working with hot water.
DANGER OF BURNS!
Do not bend over exhaust outlet
when using hot-water mode.
DANGER OF BURNS AND EXPLO-
SION!
Due to the danger of explosion from
the burner, machines operated at
petrol stations or in other hazardous
areas may only be used outside the
areas specified as hazardous in the
German TRbF (Technical Rules for
Flammable Liquids).