Brasilia OPUS Technical Manual page 41

TROUBLESHOOTING
** = Maintenance and reparations that can be performed only from authorized and specialized technician.
For the user: contact authorized service agent!
The water level control does
not provide water when it
should and the level gauge
light is off.
The water level control does
not provide water when it
should and the level gauge
light is on.
The water level in the boiler
continues to rise until it es-
capes from the safety valve.
The graduated optical
gauge does not show the
actual water level in the
boiler.
The boiler gets up to pres-
sure but the group will not
deliver.
The machine will only de-
liver when the heating ele-
ment is electrically powered
(red indicator light on).
Irregular doses are deliv-
ered (dosed version only).
Insufficient use of the cof-
fee.
Leakages occur from the
water and steam pipes with
the relative taps shut.
Water or steam leakages
occur under the tap knobs
during opening.
A loss between the group
and the filter holder occurs
during delivery.
Loss of water from the
group valves locking.
Loss of water from the block
ring-nut during manual load-
ing.
Only for versions with display and Hyperwand:
"PUSH STEAM BUTTON"
alarm
REV. 2 04/2007
CAUSES
• The sensor is touching the glass or earthed metal parts.
• The electronic control centre is defective.
• The loading solenoid valve coil is broken.
• The loading solenoid valve core is blocked.
• Level sensor not connected.
• There is a foreign body inside the water level control so-
lenoid valve.
• There is a foreign body in the seal housing.
• The seal is worn.
The gauge's lower connection pipe with the boiler is ob-
structed
• The control centre fuses are shot (dosed version).
• The delivery switch is defective.
• The solenoid valve will not open.
"Neutral" is missing from the electrical power supply
• There is a leakage in the infra-red doser
• The doser's rotor does not turn freely
• The delivery solenoid valve loses from the discharge.
• The expansion valves lose during delivery (except lever
machine, which is not fitted with expansion valves)
• The infusor operates irregularly.
• Pump pressure incorrect.
• Expansion valves calibration incorrect: they lose during
delivery (except lever machine).
• The delivery temperature is incorrect.
• The delivery solenoid valve loses from the discharge.
• The warming cycle is clogged.
• The grain size of the ground coffee is incorrect (grain
too fine or too coarse).
• Shower and filters partially obstructed.
Sealing gasket defective or presence of a foreign body in
the seal housing.
Tap axis seals detective.
Underpan seal detective or edge of filter irregular.
Seal detective.
Tap axis seal detective.
The alarm appears at the end of time, inserted to pro-
gramming, to the last use of Hyperwand.
SOLUTIONS
• ** Check and reposition.
• ** Check and replace if necessary.
• ** Check and replace if necessary.
• ** Check and replace if necessary.
• ** Check and replace if necessary.
• ** Check and replace if necessary.
• ** Check.
• ** Check and replace if necessary.
** Dismantle and clean.
** Check and replace if necessary.
** Check and reset.
• ** Replace the doser if there is humidity on its outside and
on the diode holder flange.
• ** Replace the doser
• ** Check and replace if necessary
• ** Check the calibration and eventually the seal. Warning:
Do not fully unscrew the expansion valve regulation union
with the boiler under pressure.
• ** Check and replace if necessary.
• ** Regulate the pressure checking the manometer during de-
livery. Exact calibration value: 9 bar.
• ** Regulate the calibration.
• ** Check the temperature with the thermometer during deliv-
ery at the filter holder spout outlets. Intervene if necessary us-
ing the pressure switch.
• ** Check and replace if necessary.
• ** Check and eventually replace the gicleur.
• Check the delivery time and regulate the grinding if neces-
sary.
• ** Check and clean; replace if necessary.
** Check and replace if necessary.
** Check and replace if necessary.
** Replace.
** Replace.
** Replace.
See chapter "CLEANING".
ENGLISH - 16