TECHNICIANS' manual 41 of 100
7. MAINTENANCE AND CLEANING
7.1 Safety precautions
Carefully read the instructions provided in
chapter "I. SAFETY PRECAUTIONS" on page
3.
7.2 PPE features
When installing the machine, the following PPE is required:
The use of protective gloves is mandatory.
7.3 Maintenance
7.3.1 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. Grinders 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. 6.7. X
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