Product Manual

17
Pressure control valve - safety valve
The pressure control valve - safety valve protects the high pressure cleaner 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.
Motor protection switch
Motor is protected against overload by means of a motor protection switch.
In case of motor overload or blocking, the motor of the high pressure cleaner
switches o automatically. If motor tends to switch o repeatedly, make sure to
detect appears. Make sure to detect and remedy the cause of the failure.
Replacements and inspection work should only be performed by
qualified persons when the high pressure cleaner is disconnected from
the power supply, i.e. with plug pulled out from the electrical socket.
Total stop system with delayed motor cut-o
After startup and switching on the high pressure cleaner a green light is displa-
yed. When opening the safety trigger gun the motor is started via a total-stop
system. When closing the safety trigger gun the motor is switched o only after
30 seconds. The delayed switch-o is necessary because switching on and o
motors frequently on high pressure cleaners of this size may involve heavy load
on the power network and cause increased wear of internal electrical parts.
Functional details