Tetra Pak Hoyer Frigus 400, Manual

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Tetra Pak
Hoyer
4-6 F40 03 DB 00
Fig. 4.5
4.3 Installation check
Check that connections have been made
correctly:
a. Slowly open the cooling water intake tap and
check that there are no leaks. Open the outlet
tap and check that water can flow freely and
that any air in the circuit has been expelled
(this involves turning on the machine’s
cooling compressor because of the pressure
valve which blocks the flow of water - see
below).
b. Turn on the compressed air supply tap and
check that there is no leakage and that
pressure is between 6 and 10 bar. If the
installation does not have a drier, bleed
condensation from the line before turning on
the tap on the machine.
c. Turn the main switch on the machine’s rear
panel to the (I) position.
Release the emergency button (1). Check that
the power on light and the indicators come on.
If only the power on light comes on, change the
direction of rotation of the phases by switching
the positions of two wires in the machine’s power
supply cable on the distribution panel (refer to
installation instructions); all motors will then turn
correctly in the direction indicated by the arrows
in figure 4.5.
used during testing prior to shipment; if this cable
is not long enough, it must be replaced in its
entirety, without making any connections.
The machine’s electrical installation includes a
device for checking that phase sequence is correct to ensure that the motors turn in the right
direction; if the machine does not work after
connection, but the power on indicator light (1)
comes on, two of the three wires in the machine’s
cable must be reversed on the distribution panel
which supplies the machine.
1