Tetra Pak Hoyer Frigus 400, Manual

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6-3
Tetra Pak
Hoyer
F40 03 FB 00
6.2 Start of production
a. Connect the pump intake to the mix container.
b. Check that the power ON indicator (1) on the
operator panel is on.
c. Start the pump with the switch (2). Mix flow in
litres/hour corresponding to pump speed will
be shown on the indicator (3).
d. Wait for mix to start coming out of the freezer
outlet pipe.
e. Reduce pump speed to its minimum with the
potentiometer (4).
f. Start the dasher with the switch (5) and check
that the switch indicator light comes on.
g. Start up the refrigerator compressor using the
switch (6). Cooling will begin and the mix
contained inside the freezer cylinder will begin
to harden.
h. Start up the sanitised air plant with the switch
(7). Check that the switch light comes on.
i. Use the regulator (8) to adjust the percentage
of sanitised air to be injected into the mixtures.
The regulation takes effect after a few minutes.
j. The hardness of the ice cream can be monitored
on the gauge (9) which measures the amount
of current absorbed by the dasher motor,
proportionate to the hardness of the ice cream.
k. When the ice cream takes on the correct
consistency, use the potentiometer (4) to
increase pump speed slowly up to the desired
rate of flow.
Fig. 6.2
l. Set the pressure of the ice cream inside the
cylinder with the regulator (10), which activates
the pneumatic valve set above the cylinder.
Check that the ice cream pressure inside the
freezer cylinder is between 4 and 8 bar on the
pressure gauge (11).
The pressure should not exceed 10 bar, and can be
reduced as follows:
• check correct adjustment of (10);
• make sure that the ice cream outlet hose is not
pinched and that it is no longer than 3 metres;
• adjust the hot gas regulator with the
potentiometer (12) to soften the ice cream.
If excessive pressure is due to low production, it
may be necessary to increase pump speed using the
potentiometer (4).
Hoyer
Frigus
2
9
4
7
10
6
8
3
5
1
12
11