Thank you for placing your trust in our company by purcha-
sing the Weller Preheating and Reflow System WHP 300.
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 Preheating and Reflow System WHP 300 corre-
sponds to the EC Declaration of Conformity in accordance
with the basic safety requirements of Directives 89/336/EEC
and 73/23EEC.
2. Description
The Preheating and Reflow System WHP 300 is eminently
suitable for soldering and unsoldering tasks in hybrid tech-
nology. This device brings the carrier material to the working
temperature for perfect soldering operations without causing
any thermal damage to the base material. The Heating Plate
HP 300 is electrically isolated from the power supply mains
and operates with safe low voltage of 27 V AC. The heated
area of 100 x 160 mm (European format) is heated uniform-
ly. Temperature regulation is performed by analogue means.
The desired temperature can be set continuously with a rota-
ry potentiometer control over the range from 50°C to 300°C.
The set point temperature and the actual temperature are
displayed in digital form. The digital temperature indicator
can be switched to the desired display mode (set point or
actual value) with a sliding switch. The digital display also
contains a luminous spot for visually checking the action of
the temperature controller. As option, a facility is available for
controlling the temperature with an external sensor directly
on the heated component. Switchover to the external sensor
takes place automatically when plugging-in the 6.35 mm
jack plug on the front of the unit. The case is coated with a
permanent electrically conducting lacquer. A ground potenti-
al equalisation connection can be made if required via the
3.5 mm switching jackplug socket on the rear of the unit. The
mains primary circuit of the unit is equipped with a resetable
current overload cut-out device. This current overload cut-
out device can be reset by pressing the red button after cle-
aring the cause of the current overload fault.
Technical Data
Dimensions:
Controller Unit WHP 300
W x D x H: 145 x 270 x 102
Heating Plate HP 300
L x W x H: 220 x 160 x 45
Mains voltage:
230 V AC
Heater voltage:
27 V
Power consumption:
300 W
Protection:
1.5 A current overload cut-out
device
Accuracy:
Temperature control tolerance
+/-2% of scale end value
3. Commissioning
Connect the heating plate via the 5-pole flat plug connector
to the controller unit.
Warning: Make sure that there are no combustible
objects in the vicinity of the heating plate.
Check that the mains voltage corresponds to the nominal
value stated on the type specification label. When you are
sure that the mains voltage is correct, connect the controller
unit to the mains voltage. The changeover switch for set
point / actual temperature display should be set to „SET
POINT“. Switch-on the control unit at its mains switch and
set the desired temperature on the rotary potentiometer con-
trol. The red spot to the right of the display digits lights up.
This red spot indicates the temperature controller action.
Continuous illumination means that the actual temperature is
below the set point temperature, that is the system is hea-
ting-up. Flashing of the red spot means that the actual tem-
perature agrees with the set point temperature, that is the
system is now operating in the controlled temperature mode.
When the red spot is not lit, this means that the actual tem-
perature lies above the set point temperature. Move the
changeover switch to the setting „ACTUAL“. The digital
display now reads the actual temperature of the heating
plate.
4. Equipotential bonding
The various circuit elements of the 3,5 mm jack bush make
4 variations possible:
Hard-grounded:
No plug (delivery form)
Equipotential bonding:
With plug, equalizer at center con
tact (impedance 0 ohms)
Potential free:
With plug
Soft-grounded:
With plug and soldered resistance.
Grounding with set resistance
value.
9
English
PK Elektronik Vertriebs GmbH, Ellmendinger Str. 23, 76227 Karlsruhe
Tel.: 0721-43337, Fax: 0721-491292, [email protected], www.pkelektronik.com
