Tetra Pak Hoyer Frigus 400, Manual

Page: 24 / 97

Tetra Pak
Hoyer
5-3
F40 03 EB 00
Fig. 5.2
5.2 Ice cream pressure setting
Ice cream pressure is adjusted using the pneumatic
pressure regulator (4). Pressure is indicated by the
pressure gauge placed on the front of the machine,
specifically on the pipe between the pump and the
cylinder. For good ice cream quality, the pressure
should normally be between 4 and 8 bar.
The safety valve opens automatically if the pressure
in the cylinder, which appears on the pressure gauge,
exceeds 12 bar; this prevents pressure from
damaging the freezer.
WARNING:
The adjustment described above takes effect after
an interval of time which varies according to the
operating parameters set.
Wait for the gauge (6) reading to stabilise before
proceeding with further adjustments.
pressure gauge (3) – and therefore the quantity of
compressed air introduced into the supply pump to
obtain the required overrun. The greater the pressure
of the compressed air introduced, the greater the
overrun obtained, up to the capacity of the mix. Over this limit the compressed air cannot be absorbed by
the ice cream, and is expelled separately. Switch
(1) is active only if the pump and refrigerator
compressor are operating.
Hoyer
Frigus
3
1
2
5
4
6