Lelit Giulietta PL1SVH, Инструкция по эксплуатации

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Pag. 34
16
– DEFECTS AND MALFUNCTIONS
To be done by authorized, qualified personnel
MALFUNCTION CAUSE NOTES
Dispensing slow, coffee burnt.
Pressure gauge pump lower than 9 bar. Pump out of calibration.
Pump with reduced capacity.
Drainage tube leaks when group is at rest
(defect only on one group).
Coffee dispensed normally.
Dispensing valve does not hold.
If this defect is not corrected immediately,
the water softener runs out long before the
expiry time, with consequent scale deposit.
Group at rest
Dispensing valve gasket fails rapidly.
Water leak from the drainage tube.
Coffee dispensed normally.
Defect on all groups.
Expansion valve with calibration too high
(above 13 bar).
If this defect is not corrected immediately,
the water softener runs out long before the
expiry time, with consequent scale deposit.
Group at rest.
Continuous loss of cold water in the
drainage tray. Groups do not dispense any
more coffee and the pressure gauge pump
shows low values.
Expansion valve remained open.
If this defect is not corrected immediately,
the water softener runs out long before the
expiry time, with consequent scale deposit.
Group in operation.
Drainage tube leaks.
No coffee.
Drainage valve does not hold.
Group in operation.
Loss of cold water in drainage tray.
Coffee bland.
Dispensing slow.
Expansion valve out of calibration (opens at
less than 9 bar).
Group leaks at cam shaft. Leak on the two glands.
Remove the glands taking care not to mark
the housings. Do not use tools made of steel
or other hard materials.
Before remounting, clean the shaft
thoroughly, especially the grooves
Difficult to move the groups. Cam profile worn.
Machine does not go into pressure or
reaches pressure level slowly.
No electricity.
Automatic switch gone off.
Heating elements burned.
Electric circuit to heating element
interrupted.
No water in boiler.
Steam tap leaks.
Groups function normally.
Pressure gauge pump does not give correct
pressure reading (8 ÷ 9 bar).
Pressure gauge defective.
Pump does not reach pressure level.
No dispensing.
Motor does not work:
- No electricity.
- Capacitor burnt.
- Microswitch burnt.
- Motor burnt.
- Check valve pump open.
- By pass valve completely opened.
Pump noisy.
Pump defective.
No water in system.