3
•
Connect the mains plug to a socket and switch the power on. The air pump will
operate but the heating element remains off (ZD939A model only).
•
Turn on the power switch and the heating element will start to warm up to the set
temperature. The LED will illuminate while the element is heating (ZD939A).
•
On D01841 when power is turned on the display will indicate the current status.
•
Switch on the fan (D01841) and on either model adjust the air flow as required.
•
Adjust the temperature to the required setting and wait a few seconds for the
actual temperature to be reached.
•
Use only one hand to hold the hot air tool and one to hold the pick-up tool.
•
Place the pick-up wire under the IC pins.
•
Put the nozzle over the IC, do not touch the IC or it’s pins with the nozzle.
•
When the hot air melts the solder tin on the IC pins, lift the pick-up wire to remove
the IC.
QFP Soldering
•
Apply solder paste and install the SMD on the PCB.
•
Pre heat the SMD before heating fully and applying solder.
•
Wash any flux off after completion.
TEMPERATURE ADJUSTMENT
ZD939A model.
•
Use the rotary control to set the required temperature.
•
Positions 1-4 is up to 350
o
C
•
Positions 5-8 is from over 350
o
C to 450
o
C.
•
Use the left rotary control to set the air volume as required. For smaller nozzles
use 1-5 and for higher temperatures over 450°C and larger nozzles use 4-7.
D01841 model.
•
Adjust the temperature by pressing the UP or DOWN buttons below the LCD on
the station front panel.
•
The lower figure is the required temperature, the upper figure shows the actual tip
temperature.
•
While the iron is heating up to the required temperature “HEAT ON” displays on
the LCD.
•
If the difference between the required temperature and that of the iron tip is greater
than 10° “WAIT” displays on the LCD.
•
To change from °C to °F press “
o
C /
o
F” button. The display shows °C or °F after
the temperature figure.
•
Use the rotary control to set the air volume as required. For smaller nozzles use
1-5 and for higher temperatures over 450°C and larger nozzles use 4-7.
