Instruction manual

11
9 - DEVICES FOR THE PROTECTION OF PERSONNEL
AND THE MACHINE
When the machine is started up with the main switch (as
mentioned in the previous paragraph), the CO
2
will begin to
enter the relative tanks until it reaches the maximum
designated pressure. A safety mechanism will ensure the
pressure inside the tanks never exceeds 0.3 bar. The gauge
(P) ensures the pressure inside the tanks is continually
monitored (fig. 11).
If the gauge shows 0 bar this means there is no CO
2
left to
deliver to the tank. In this case, switch off the machine,
disconnect the empty CO
2
cylinder and replace it with a
new one.
Every time the cover (G) is raised, a device stops the flow of
CO
2
into the tanks, ensuring it remains pressurised though.
When the cover is lowered again, the CO
2
delivery starts up
again.
Every time the lever (H) is lifted (for the refilling operations),
a venting procedure is activated to reduce the pressure in
each tank.
The refilling operations can be carried out while the machine
is running and independently for each tank.
To safeguard the entire cooling system, the Ice Frost Manual
2.2 is fitted with an electronic system which sounds a warning
signal in the event of poor ventilation or if the condenser
filters are blocked by dust. In addition to this, the messages
"FILT" and then "ALARM" will appear on the control panel
display. If the operator does not intervene as soon as he
hears the warning signal by restoring the normal working
conditions (ensuring better ventilation or cleaning the
condenser filter), this electronic system will stop the machine
automatically.
To clean the filter, follow the instructions given in the
paragraph headed “Special Maintenance”.
Fig. 11
Fig. 11a
Fig. 11b
FILT
ALARM