Water connection
62
16 Water
connection
The water-related safety should be as per DIN EN 61770. The machine can be connected to an inlet water
supply without an intermediate connection to other safety equipment.
Warning
The machine and any other relevant additional devices must be connected by an electrical
company authorised by the relevant electricity supplier in relation to local standards and
regulations.
INFO
At the commissioning of the machine the authorised service technician measures the water
hardness and saves it in the machine's electronic control unit.
16.1 Requirements for the on-site inlet water connection
Water quality
The fresh water must in microbiological aspects have the quality of drinking
water.
Water inlet temperature
4 - 60 °C
Water hardness
3 °dH (3.8 °e, 5.34 °TH, 0.54 mmol/l, 3 gr/gal) (recommendation, to prevent
scaling of the machine)
30 °dH (37.6 °e, 53.4 °TH, 5.35 mmol/l, 30 gr/gal) with machines with an
internal water softener
Minimum flow pressure
100 kPa (1.0 bar)
Maximum inlet pressure
600 kPa (6.0 bar)
Flow rate
at least. 4 l/min
16.2 Requirements for the on-site water stop cock
easily
accessible
not behind the machine
3/4"
connector
16.3 Connecting the supply hose
Caution
The supply hose may not be shortened or damaged.
Old existing hoses may not be re-used.
Do not bend the supply hose while laying it.
The supply hose and dirt trap are located in the machine.
INFO
The dirt trap prevents particles from the water supply line entering the machine thus preventing
extraneous rust on the cutlery and in the machine.
Connecting the supply hose to the machine.
Connect the dirt trap to the on-site water stop cock.
Only with hot water connections in Great Britain:
Install the non-return valve between the dirt trap and the supply hose. The non-return valve is located in a
bag in the machine.
Connect the supply hose to the dirt trap.
Open the water stop cock and test whether the connections are tight.