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11 FLUSHING THE MACHINE (USA NSF requirements)
ATTENTION
The technician in charge of installing the appliance should carry out the following
operations before going to install the equipment at the customer’s.
ATTENTION:
The unit should be fl ushed through prior to putting it into service.
With reference to the hydraulic scheme given below, before putting it into service,
the machine must be fl ushed through as follows:
A) FLUSHING THE DELIVERY GROUP
1) Switch the machine on and make sure that it is up to pressure.
2) Let 5 liters of hot water fl ow from each delivery group N° 18 through the fi lter N° 19
located on the fi lter holder N° 21.
B) FLUSHING
THE
BOILER
1) Switch the machine on and make sure that it is up to pressure.
2) Switch the machine off.
3) Connect a rubber drainage hose to hot water tap N° 14
4) Open hot water tap N° 14 until the boiler is completely drained of water
(time required: 2 minutes):
Note: it is the boiler pressure that makes the water drain off.
C) FLUSHING THE HEAT EXCHANGERS
1) Remove the upper cup tray.
2) Remove the pipe N° 23 and the injector of heat exchanger N° 8.
3) Remove the upper cap of the heat exchanger N° 8.
4) Wait until the heat exchanger is completely empty.
5) Re-connect the pipes to heat exchanger.
6) Reassemble the upper cup tray.
