Alto 30HA STANDARD I/MASTER I Manuale di istruzioni - Pagina 13
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Operating instructions
3.8 Storage
Frost-free room or anti-freeze solution!
We recommend you to store the machine in a frost-free room between cleaning tasks. The machine must
be emptied of water prior to storing for a longer period. This is done in the following way:
1. Detach water hose. Dismount spray lance and empty it of water.
2. Start the machine, and let it run with open spray handle until all water has run out.
If the store room is not frost-free, the machine should be protected with an anti-freeze solution. Contact
your distributor for further information about the anti-freeze equipment of ALTO. Follow the instructions
provided with the anti-freeze equipment.
Coil up the high pressure hose and the electric cable and place them in the dents of the driving handle (17).
The spray lance can be placed in one of the holder for spray lance (18) on each side of the machine.
3.9 Safety devices on the machine
Motor protection:
The machine features an overcurrent release built into the electrical system which will stop the
machine if the motor and the pump are overloaded. The machine can only be restarted after a
while and after that the reason for the overloading has been corrected .
Pump:
The pump is equipped with a combined circulation and automatic start/stop valve system. The valve auto-
matically disconnects the motor when the spray handle is released and thus ensures that the water is not
circulated in the pump. The machine can be restarted just by activating the spray handle.
The pump also features a safety valve ensuring that the pressure in the pump will never exceed the value
adjusted from the factory. The safety valve is sealed and should only be re-adjusted by an expert service
technician.
Thermostat:
The water temperature is controlled by a mechanical thermostat unit. The thermostat is calibrated from the
factory and must not be re-adjusted. The thermostat unit also comprises the control circuit for the heating
stage function.
Safety thermal breaker:
The safety thermal breaker is a temperature sensor of the manual-reset type. The sensor is placed on the
inlet side of the boiler and disconnects the supply of fuel oil and No Scale if the temperature exceeds 60°C.
The machine can still be operated in the cold water mode.
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