ZANDER HDK 140/100, Operating Instructions Manual

Page: 30 / 72

Installing the electrical connection
30 HDK350_EN_01_2005-05-10
► 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.
Connecting the external signalling lines
For compressor synchronisation
The control system is equipped with a digital input that ensures that the dryer can
only be operated while the compressor is on.
If the compressor is switched off, the regeneration process started in one of the
chambers is however completed. Subsequently, the respective expansion valve
is automatically closed. In standby mode, the control system remains switched
on, and the
economy cycle LED is on. The dryer is now ready for the next
switching procedure, which takes place as soon as the compressor is switched
on again.
To install the external line, proceed as follows:
► Connect the signalling line to the potential-free busbar connection of the
compressor to terminals 1 and 2 on the control board (see circuit diagram).