Caution; Description; Control Unit; Technical Data - Weller WSD 121 Manual De Uso

Thank you for placing your trust in our company by
purchasing the Weller Soldering Station WSD 121. Production
was based on stringent quality requirements which
guarantee the perfect operation of the device.

1. Caution!

Please read these Operating Instructions and the attached
safety information carefully prior to initial operation. Failure
to observe the safety regulations results in a risk to life and
limb.
The manufacturer shall not be liable for damage resulting
from misuse of the machine or unauthorised alterations.
The Weller Soldering Station WSD 121 corresponds to the EC
Declaration of Conformity in accordance with the basic
safety requirements of Directives 2004/108/EC, 2006/95/EC
and 2011/65/EU (RoHS).

2. Description

2.1 Control unit

The soldering station WSD 121 was specially developed for
soldering tasks with an extremely high heat requirement. The
120 W heater power combined with the optimal transfer of
heat to the soldering iron bit guarantees the high
performance capability of the WP 120 soldering iron. As an
alternative to the WP 120, all the soldering tools listed in the
list of accessories can be connected to the unit.
A microprocessor makes operation simple and comfortable.
The digital electronic control system guarantees the best
possible control performance for various soldering tools. The
soldering tools themselves are recognized automatically by
the soldering station and assigned the corresponding control
parameters. The high-powered 24 V heating elements make
excellent dynamic performance possible, so that the soldering
tools can be used universally.
Various equipotential bonding possibilities for the soldering
iron tip, zero power switch and antistatic design of control
unit and iron complete the high quality standard.
The possibility of connecting an external input unit further
increases the variety of functions of this soldering station.
With the optional input units WCB 1 and WCB 2 it is possible

Technical Data

Dimensions in mm:
Supply voltage (8):
Power input:
Class:
Fuse (9):
Temp. control:
Precision:
Equipotential bonding (6):
166 x 115 x 101 (l x w x h)
230 V / 50 Hz
150 W
1 (control unit) and 3 (soldering iron)
230 V; T800 mA
50°C - 450°C
± 11°C
Via a 3.5 mm jack bush (initial state-hard-grounded)
to implement time functions, locking functions, etc. Integrated
temperature gauge and PC interface are included in the
extended scope of the input unit WCB 2.
The temperature for the WP 120 soldering iron can be set over
the range from 50°C - 450°C via 2 buttons (Up/Down). The
setpoint and actual value are displayed digitally. A blinking red
LED in the display signals that the preset temperaturehas
been reached – this serves as a optical regulator. Constant
illumination means that the system is heating up.
2.2 Soldering irons
WP 120: The WP 120 soldering iron is characterised by fast
and precise achievement of the soldering tip
temperature. A particularly powerful 120 W
heating element guarantees excellent dynamic
behaviour. The combination of slim design and
distance from handle to soldering tip means that
universal application is possible, from extremely
fine soldering tasks to those which require high
temperatures.
See "Accessories" for additional tools.

3. Starting

Assemble soldering iron rest. Place the soldering iron in the
safety rest. Insert the soldering iron plug into the connection
bush (6) of the control unit and lock by turning to the right.
Check that the power supply corresponds to the specifica-
tions on the name plate and that the power switch (1) is in
the OFF position. On version that can be switched, set the
voltage on the selection switch (set in the factory to 240 V).
Connect the control unit to the power supply. Switch on the
unit at the power switch (1).
When switching on the unit, a self-test is carried out in which
all display elements (2) are switched on briefly. The electro-
nic system then switches automatically to the actual tempe-
rature and displays this value. LED (5) illuminates. These light
emitting diodes are optical regulator monitors. Constant illu-
mination means that the system is heating up. The blinking
light signals that the operating temperature has been
reached.
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