Wega Wegaconcept

30
Wegaconcept
Technical manual
Checks
Weekly
Monthly
Yearly
SOFTENER
t Carry out regeneration of the softener (for the
manual softener).
t Check that there is salt in the container (for the
softener in the automatic version).
X
PERFORATED DISK
and
SEAL UNDER THE PAD
Every four months
replace the perforated
disk (2) and the
undercup seal (4) of the
delivery group (use only
original spare parts)
proceeding as follows:
t loosen the screw (1);
t remove the containment ring (3);
t replace the perforated disk (2) and the seal under
the pad (4);
t reassemble the components
X
t Verify the correct functioning of the pressure
switches
t Check for LIME SCALE on the heating elements
and boilers.
t Check the eciency of the SOLENOID VALVES of
the delivery groups.
t Check for any HYDRAULIC LEAKS at the bench and
the eciency of the drains.
X
VALVES
Check for proper operation of the negative pressure
valve, pressure limiting valve and non-return drain
valve. If, owing to failure, their replacement be-
comes necessary, repeat the test with the new valve
installed. For the checks, proceed as follows:
1 2
3
4
Checks
Weekly
Monthly
Yearly
NEGATIVE PRESSURE VALVE
1) rst try :
t remove the top grill of the machine;
t use pliers to push the pin (5) downwards;
t if the pin does not move, it probably means the
valve is encrusted with limestone and must be
replaced.
2) second try :
t turn the machine o;
t open the steam valves and drain o
all the pressure from inside the boiler;
t turn the machine back on and check
for regular closure of the valve.
X
SAFETY OR PRESSURE RELIEF VALVE
1) rst try :
t remove the top grill of the machine;
t - use pliers to pull the pin (6) upwards;
t if the pin does not move, it probably means the
valve is encrusted with limestone and must be
replaced.
2) second try :
t turn the machine o;
t block the pressure switch contacts;
t turn the machine back on and check
for pressure in the boiler to rise.
t check for correct intervention of the
valve at a maximum pressure of 2 bar.
X
NON-RETURN DRAIN VALVE
t Activate the delivery groups for
about 30 seconds;
t attach a lter holder (7) with
a gauge (available on request) to the delivery
group;
t activate the delivery group, and use the gauge
(8) to monitor pressure increase up to 8-9 bar;
t check the increase in the pressure due to the
expansion of the heated water up to a value of
approximately 12 bar: reaching this
value conrms proper operation
of the valve, as well as of
the gaskets and solenoid
valves seal;
t de-activate the deliveries;
t check the other delivery
groups.
X
5
6
1
2