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LED (filter is OK) indicates that the unit is running. The percentage details for the
turbine rotational speed are shown on the display (13).
Operating the unit
Operating mode
The unit has been set to mode 0 in the factory. Therefore the vacuum will be running
at 12,000 Pa. This corresponds to the optimum setting for direct fume extraction
using WELLER FE soldering bits. This setting cannot be changed in mode 0.
The unit can be switched over to mode 1 by pressing the TIMER button (16) during
switching on (11). Keep the TIMER button (16) pressed down until a - 1 - is shown
on the display (13). The turbine works in controlled speed mode in this operating
mode. The turbine rotational speed and therefore the fume extraction power can be
linearly changed between 20% - 100% using the UP/DOWN buttons (14/15).
The operating mode can be switched back over by keeping the TIMER button (16)
pressed down again during the switching on process (11).
Filter checks
The filter status display (17) indicates when (through filter differential pressure
measurement) the permitted degree of contamination has been exceeded and when
the filter insert has to be changed. The red filter control LED will illuminate and the
unit will be switched off. The sub-micron particle filter and wide-band gas filter are
fitted one on the other, so that they can be changed together as a compact filter.
The fine dust filter (8) (filter mat), is the pre-filter level of the compact filter (7) and
therefore has to be changed more often. The pre-filter mat change is satisfactory, if
the red LED (17) is no longer illuminated when the equipment is switched back on.
Displaying the filter operating hours
Press the TIMER button (16) and the current filter operating hours will be displayed
(display X 10). Flashing display. The operating hours display must be manually reset
after a filter change. Keep the TIMER button (16) pressed down until the display is
reset to 000.
Filter operating hours default setting
The filter operating hours can be entered as a default setting for better handling of
the filter change intervals. When the default operating hours setting has expired, the
unit will be switched off and “filter change required” will be indicated by a flashing
display (13) and the illumination of the red LED (17).
Press the TIMER button (16) to enter the default operating hours setting. The current
filter operating hours will now flash on the display. Press the UP/DOWN buttons
(14/15) simultaneously whilst the display is flashing. Release UP/DOWN buttons
(14/15) and now use them to enter the default operating hours.
RS232 Interface
It is possible to control the WFE 20D via a PC using the integrated standard RS232
interface (12). This enables the full range of system functions to be used or remotely
controlled.
Remote control
The remote control (which is available as an accessory) can be operated via the
RS232 interface (12). The unit’s main functions can be transmitted using this remote
control.
●
Switching the unit On / Off
●
Speed setting in mode - 1 -
●
Filter status display
Knowing that the WFE 20D can be operated via a remote control is helpful when
selecting the site for the unit.
Decommissioning
Attention! A high concentration of pollutants will result in the active carbon
heating up. The equipment should be run for several minutes in a
pollutant free state before being switched off in order to prevent
unwanted heating up.
PK Elektronik Vertriebs GmbH, Ellmendinger Str. 23, 76227 Karlsruhe
Tel.: 0721-43337, Fax: 0721-491292, [email protected], www.pkelektronik.com
