24
HDK-MT350_EN_06
► One shutdown valve is to be installed at both the compressed air inlet and
outlet ends of the dryer.
► A pressure retention valve must be installed downstream of the dryer for
discontinuous operation (cut-out operation) of the dryer.
Installing the electrical connection
Warning against electrical voltage
Only qualified specialist personnel may carry out work on the electrical
system!
Installing the supply cable
The components of the dryer have been connected to the control cabinet at the
factory. You only need to connect the control cabinet to the electrical supply
cable.
The switchbox is provided with a connector where electrical power must be
connected.
► Ensure that the cross-section of the electrical supply cable corresponds to
the power rating of the dryer and the electrical voltage provided by the
customer.
► Make the electrical supply cable to the dryer voltage-free.
► Secure the electrical supply cable to the dryer against switch-on.
► Undo bolt (1) on the connector and
withdraw connector with seal from the
switchbox.
► Use a suitable tool to remove the
terminal block from the connection
box.
► Undo the PG union and pull the cable
through the aperture (3). The
exposed phase ends should not be
longer than 35 mm max.
► Now make the cable connection as
follows:
—
Earth to terminal PE
—
L1 to terminal 1
—
N to terminal 2
Terminal 3 is not used.
Connect electrical cable to device
adapter
► Fit terminal block into the connector and use bolt to remount the connector
with seal on the switchbox.
► In all phases the dryer must be protected against short circuits by means of
fuses.
► In order to relief cable strain, re-tighten the PG union.
