Electrical Connection - Unitor HPC 30/1 Instruction Manual

agents or chemicals may adversely affect the safety of the machine.
• Risk of explosion – Do not spray flammable liquids. Do not clean deli-
cate parts made of rubber, fabric, etc. with the jet nozzle. Keep some
distance between the jet nozzle and surface in order to prevent the sur-
face from damage.
4 Transport
For safe transport in and on vehicles we recommend to prevent the equip-
ment from sliding and tilting by fixing it with belts. For transport and storage
at temperatures around or below 0°C, anti-freeze should be drawn into the
pump beforehand (Please refer to Operating Instructions).
5 Water connection
This machine is only allowed to be connected with the potable water mains,
when an appropriate backflow preventer has been installed, Type BA, ac-
cording to EN 60335-2-79.
The length of the hose between the backflow preventer and the machine
must be at least 12 meters (min diameter 3/4 inch) to absorb possible pres-
sure peaks. Operation by suction (for example from a rainwater vessel) is
carried out without backflow preventer.
WARNING
• Water that has flowed through backflow preventer and high pressure
washer is considered to be non-potable.

6 Electrical connection

The electric supply connection shall be made by a qualified electrician and
comply with IEC 60364-1. It is recommended that the electric supply to this
machine should include either a residual current device that will interrupt
the supply if the leakage current to earth exceeds 30 mA for 30 ms or a de-
vice that will prove the earth circuit.
Switching on the cleaner may cause voltage fluctuations. Voltage fluctu-
ations should not occur if the impedance at the transfer point is less than
0.15 Ohm. If in doubt ask your local electricity supplier.
10 Original instruction