TECHNICIANS' manual60 of 104
7.15 Tips for a good cup of coffee
Wash the lters and lter holders on a daily basis, as indi-
cated in para. 8.8.3 a pagina 72. The failure to perform this
cleaning operation will negatively affect the quality of the
dispensed coffee.
To obtain high-quality coffee, it is important that the water
hardness does not exceed 6-7°f (French degrees). If the water
hardness exceeds these values, it is advisable to use a water
lter or softener. Avoid using a water softener if the water
hardness is less than 4°f.
If the taste of chlorine in the water is particularly strong, in-
stallaspeciallter.
Do not to keep large amounts of coffee beans on hand. If
you change the type of coffee, we recommend calling out
the Technician to adjust the water temperature and coffee
grinder.
If the machine has not been used for a certain period of time
(2-3 hours), carry out a few dry runs. Make sure that the ma-
chine is constantly cleaned and periodic maintenance is car-
ried out.
8. MAINTENANCE AND CLEANING
8.1 Safety precautions
Carefully read the instructions provided in chapter
"I. SAFETY PRECAUTIONS" on page 3.
8.2 PPE features
When installing the machine, the following PPE is required:
The use of protective gloves is mandatory.
8.3 Maintenance
8.3.1 Scheduled maintenance
Performthefollowingmaintenanceaccordingtothespecied
frequency.
If the machine is used intensively, the checks need to be per-
formed more frequently.
Component Type of operation Quarterly Yearly
PRESSURE GAUGE
Check the heating unit pressure which must be between 0.08 and 0.14 MPa (0.8
and 1.4 bar).
Periodically check the water pressure when coffee is being dispensed: check the
pressure indicated on the gauge, which must be in the range of 0.8 to 0.9 MPa (8
and 9 bar).
X
FILTERS AND FILTER
HOLDERS
Check the condition of the lters. Check for any damage on the edge of the lters
and check whether any coffee grounds settle in the coffee cup, and replace the
lters and/or lter holders, as required.
X
DISPENSING GROUP
Replace the shower screen and group gasket as indicated in para. "8.3.3 Dispens-
ing group maintenance" on page 38.
X
WATER FILTER
Replace the water lter cartridge at the frequency indicated by the manufacturer.
If limescale has formed in the hydraulic circuit, the lter will need to be replaced.
X
WATER SOFTENER
Carry out the regeneration procedure as instructed by the manufacturer.
Take care in areas where the water is very hard. The water will need to be regener-
ated more frequently, especially if the machine is used intensively.
X
GRINDER-DISPENSER
Check the ground coffee dose (around 7 grams each time) and check the degree
of grinding. The burrs must always have sharp cutting edges. Too much powder in
the grounds is an indication that the coffee is deteriorating. We recommend con-
tacting the Technician to replace the at burrs after every 400/500 kg of coffee,
or after every 800/900 kg for conical burrs.
X
HEATING UNIT Replace the water in the heating unit as indicated in para. 6.5. X
To Next Page