Notes On Use; Safety Instructions - Weller WDD 81V Manuel D'utilisation

4. Notes on Use

Different suction nozzles provide solutions for a wide range of desoldering problems.
The correct tool for changing the suction nozzles is integrated in the cleaning tool. Press
lightly against the heating element when inserting and locking the suction nozzles.
It is important to use additional solder when desoldering. This ensures good suction nozzle
wetting properties and improves the flow characteristics of the old solder. Ensure that the
suction nozzle is perpendicular to the plane of the circuit board to achieve optimal suction
performance. The solder must be completely molten. During the desoldering process it is
important to move the component pin in a circular motion in the hole. If, after the desoldering
process, the solder is not completely removed, the solder joint should be retinned before
desoldering again. The selection of the right size of suction nozzle is important. As a rule of
thumb: the internal diameter of the suction nozzle should match the diameter of the hole in
the circuit board.
When heating the suction nozzle or soldering iron bit for the first time, wet with solder. This
removes oxide layers and impurities that have formed during storage. Always ensure that
the soldering iron bit or suction nozzle is well tinned during breaks in soldering and when
placing in the holder. Do not use excessively aggressive fluxes.
The desoldering station has been set up for a medium size suction nozzle or soldering iron
bit. Temperature variations may occur if other bit shapes are used.
Important: Always ensure that the soldering iron bit is correctly seated.
External input unit WCB 1 and WCB 2 (optional)
The following functions are possible when using an external input unit.
Offset: The real temperature of the soldering iron can be changed by ± 40°C
(72°F) by input of a temperature offset.
Setback: Reduction of the required temperature set to 150ºC / 300ºF (standby).
The set-back time, the time after which the soldering station switches
into standby mode, can be adjusted from 0-99 minutes. The set-back
condition is indicated by a flashing actual value display. After a period
equal to three times the set-back time, „Auto-Off" is activated. The
soldering iron is switched off (flashing dash on the display). The set-back
or auto-off condition is ended by pressing a button or finger switch
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pressure. During this process the required value set is briefly displayed.
Lock: Locking the setpoint temperature. Settings cannot be changed after
the soldering station has been locked.
°C/°F: Switching the temperature display from °C to °F, and vice versa.
Window: Limitation of the temperature range to max. ±99 °C based on a locked
temperature resulting from the "LOCK" function. The locked temperature
represents the median point of the adjustable temperature range. For
units with a floating contact (optocoupler output) the "WINDOW" function
is used to adjust a temperature window. If the actual temperature is within
the temperature window the floating contact will be enabled (optocoupler
output).
Cal: Re-adjustment of the soldering station (WCB 2 only).
PC interface: RS232 (WCB 2 only).
Temp. gauge: Integrated temperature gauge for thermal element Type K (WCB 2 only).

5. Safety instructions

The manufacturer assumes no liability for uses other than those described in the operating
instructions, or for unauthorized alterations.
These operating instructions and warnings should be read carefully and kept in an easily
visible location in the vicinity of the soldering iron. Non-observance of these warnings can
result in accidents, injury or risks to health.
The WELLER soldering station WDD 81V is in compliance with the EC Declaration of Conformity
in accordance with the basic safety requirements specified by Directives 89/336/EEC and
73/23/EEC.
22.04.2002, 10:10 Uhr
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