Cooper Weller WFE 35, Operating Instruction

Page: 21 / 53

20
1. Description
The Weller WFE35 soldering fume extraction device is equipped with a highly powerful,
maintenance-free turbine and is therefore best suited to continuous industrial operation.
The turbine is designed to be capable of extracting the soldering fumes from
approximately 35 Weller Fume Extraction soldering bits. Alternatively, the WFE35 can
also be used as a worktop extraction device at a maximum of 2 work stations for
soldering fumes or adhesive vapours. Combined use is, however, not possible.
The vacuum hoses of the soldering bits can be connected to the WFE35 via a DN40
vacuum tube system which is incapable of electrostatic charging.
The 4-stage filter installed (expanded metal condensation filter, fine particulate air filter,
submicron particulate air filter and wide band gas filter) is assembled in modular form
and in this configuration is ideally suited for the extraction of soldering fumes. With the
use of homologated Class S submicron particulate air filters, on delivery the filtration
efficiency of the filter assembly is 99.99% in accordance with DIN 24184, where particle
size is 0.3 µm. These figures are only achieved by the use of original spare parts.
When it is necessary to change a filter, this is indicated by a differential pressure
measurement device in the unit and by a running time meter. The process is considerably
simplified by the modular method of construction. If the level of contamination of the
filter system as set by the differential pressure measurement device is exceeded, the
unit automatically cuts out. Once the required change of filter has been carried out, the
unit can be re-activated by operating the reset button when the unit is switched on. A
red and a green control light signal the prevailing operating status. Various fluxes, flux
fractions and different types of dust fractions in the extracted air can significantly affect
the service life of the filter stages.
Warning: When using extraction equipment the legal limits with regard to
contaminants in the workplace should be observed and regularly checked by the
operator of the extraction device.
Technical data:
Dimensions: 650 x 350 x 750mm (L x W x H)
Voltage: 230V AC
Power consumption: 1.36kW
Current consumption: 5.4 A
Sound level: 52 dB (A) at 1m intervals
Max. negative pressure: 110 mbar
Max. conveyance: 220 m 3 /h pressureless
Weight: 80 kg
2. Commissioning
Connection of the FE soldering bits via the DN 40 vacuum tube system
(available as an accessory)
The Weller WFE35 is linked via an NW44 flexible extraction hose to the DN40 vacuum
tube system. A sealing plug on the vacuum connectors (9) or (10) for the tube system
is removed.
The vacuum connector which is not being used remains sealed. To connect the FE bits,
the vacuum tube system is drilled in at the desired position with a diamter of 7.0 mm,
the attachment nipple screwed in and the vacuum hose of the FE soldering bit attached.
The vacuum connectors (9) and (10) are also designed for use as a worktop extraction
device (max. 2). The vacuum connector which is not being used should remain sealed.
Before commissioning, check the mains voltage against the information on the type
plate. If the mains voltage is correct, connect the WFE35 to the mains (2) and switch
the unit on at the mains switch (5). The green light (3) "Filter OK" will light up and
indicate that the filter assembly is intact.
Maintenance
Before maintenance work is undertaken, the unit must be disconnected from the mains
by pulling out the mains plug.
The WELLER WFE35 is equipped with a differential pressure measurement device
designed to monitor the condition of the dust filters. When the red light "Change filter"
comes on (4), the unit switches off and the particulate filter system must be checked.
After the filter has been replaced, the reset button (6) in the operating element must be
pressed when the mains switch is turned on in order to re-start the WFE35.
To change filters, the tension locks (8) between the turbine casing (13) and the filter
casing (14) are opened and the vacuum casing lifted out. Following this, the wide band
gas filter and the submicron particulate air filter can be taken out of the filter casing one
after the other by the brackets. The fine particulate air filter and the expanded metal
condensation filter can also then be lifted out.
GB