Malfunctions And Related Solutions - Wega Mininova Use And Maintenance Manual For The Technician

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Malfunctions and related solutions

MALFUNCTION
MACHINE LACKING POWER
NO WATER IN BOILER
TROPPA ACQUA IN CALDAIA
STEAM DOES NOT COME OUT OF NOZZLES
STEAM MIXED WITH WATER COMES OUT
OF THE NOZZLES
NO DELIVERY
WATER LEAKS FROM THE MACHINE
COFFEE IS TOO COLD
Technical manual
CAUSE
1.
The general switch is in the "O" position
2.
The machine switch is defective
3.
The mains power switch supply is in "OFF"
position
4.
The wiring is defective
1.
The water supply tap is closed/the inner tank
is empty
2.
The pump filter is clogged
3.
The motor pump is disconnected or jammed
4.
The water filling solenoid valve is defective
5.
The water inlet solenoid valve filter is clogged
1.
The solenoid valve of the automatic level device
is defective
2.
The heat exchanger is drilled
3.
The solenoid valve of the automatic level remains
plugged
1.
The electrical heating element is faulty
2.
Pressure switch contact are oxidized
3.
The sprayer nozzle is clogged
1.
The boiler level is too high
1.
No water supply/the inner tank is empty
2.
The group solenoid is faulty
3.
The pump is blocked
4.
The injector is clogged
5.
The group solenoid is clogged or dirty
6.
The doser is blocked
7.
Air in the plant
8.
Pressure of reducer too low
1.
The pad does not drain
2.
The drain pipe is broken or detached or the water
flow is obstructed
3.
Hydraulic leaks in the hydraulic circuit
1.
The electrical heating element of the coffee boiler
is faulty.
2.
The wiring is faulty.
3.
Lime scale on the heating element.
4.
Pressure switch contact are oxidized
5.
Pressure switch has intervened
6.
The limestone has reduced water circulation
7.
The dispensing group is cold
SOLUTION
1.
Place the general switch in the "1" position
2.
Replace the main switch
3.
Place the main power switch in "ON" position
4.
Check for any faulty connection
1.
Open the water supply tap/Fill the tank
2.
Replace the pump filter
3.
Check the motor pump
4.
Replace the water filling solenoid valve
5.
Clean or replace the water inlet solenoid valve
filter
1.
Replace the solenoid valve of the automatic
level device
2.
Replace the boiler
3.
Check the solenoid valve; the mass to the frame
and the efficiency of the electronic control unit
1.
Replace the heating element
2.
Clean contact or replace pressure switch o
sostituire il pressostato
3.
Clean the sprayer nozzle
1.
Check the status of the probe level: check the
correct position and control the presence of
shallow limestone
1.
Check the water supply / Fill the inner tank
2.
Replace the group solenoid.
3.
Replace the pumo.
4.
Check or replace the injector
5.
Clean or replace the solenoid
6.
Check or replace the doser
7.
Dispensig until the new erogation of eatr
8.
Increase the pressure of reducer
1.
Check the sewer drain
2.
Check and restore the connection of the drain
pipe to the pad
3.
Identify and eliminate any hydraulic leaks
1.
Replace the heating element
2.
Check for any faulty connections
3.
Clean the machine
4.
Clean contacts or replace pressure switch
5.
Re-arm the heating element
6.
Clean raccords or replace circulation pipes
7.
Eliminate the presence of air bubbles in the hydraulic
circuit as follow:
• disconnect electrically the pump;
• close the water tap of the softner;
• vacuum supply for few minutes;
• connect electrically the pump;
• open the water exit tap of the softener;
• make dispensing until the exit of water;
• wait few minutes for warming up
ROSSO
C:0 M:100 Y:100 K:0
NERO
C:0 M:0 Y:0 K:100
VERDE
C:100 M:0 Y:100 K:0
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