Necta Canto Plus Espresso, Установка, эксплуатация и обслуживание

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© by N&W GLOBAL VENDING S.p.A.
49
10 2009 3325 - 00
BOILER MAINTENANCE
Descale the boiler at regular intervals, according to the
hardness of the mains water and the number of selec-
tions you have performed.
This operation must be carried out by qualified
technical personnel only.
To descale, remove the boiler from the machine.
To descale, use biodegradable, atoxic and non-aggres-
sive products only.
Rinse abundantly before re-assembling the parts.
On reassembling, make sure that:
- Electrical contacts (terminals, faston, etc.) are perfectly
dried and well-tightened;
- Safety and anti-boil thermostats are properly positioned
and connected;
- Water connections are correct.
Important!!!
If the boiler heating system should work without water for
any reason whatsoever, check the proper operation of
the boiler temperature probe before setting the machine
at work.
If dry heating should continue until the safety thermostat
trips (see the water circuit), the boiler temperature probe
will be irreversibly damaged and must be necessarily
replaced.
d
isassemBling pumps
Pumps are secured to the cover by means of a bayonet
connection.
To disassemble them:
- Detach the connector
-Turn the pump for forcing slightly to overcome the snap
lock.
The direction of rotation is alternatively clockwise and
counterclockwise.
h
eaT proTecTion of Boilers
In case of action check and remove the cause of the
failure before restoring the thermostats manually.
i
nsTanT Boiler
Anti-boil thermostats (manually resettable) will deacti -
vate the boiler heating element as a result of a failure of
the control system.
Anti-boil thermostats will become active as soon as
steam is condensed in the overflow tube by way of boil -
ing. Thermostats are set to act as soon as the tempera-
ture is above 80°C.
The safety thermostat (manually resettable) will deac -
tivate the boiler heating element as a result of a break-
down in the temperature control system and the failure to
act of anti-boil thermostats.
The safety thermostat will act (at a temperature above
105°C) to prevent the boiler from dry-heating.
Fig. 36
1- Anti-boil thermostats (manually reset)
2- Overflow tube
3- Safety thermostat (manually reset)
4- Water dispensing pumps
5- Heating element terminals
6- Boiler connectors
7- Bayonet connection
8- Guide for coupling (right-left)
9- Pump guides
10- Locking lever
11- Locking indentation