Configuration - 3B SCIENTIFIC PHYSICS D Instructions D'utilisation

4. Accessories
A temperature NTC sensor with measurement
terminal (1021797) is ideal for measuring the
temperature at various places along the copper
piping, since it can be clamped directly to the cop-
per and provides good thermal conduction be-
tween the pipe and the sensor. It can be used in
conjunction with the "VinciLab" datalogger
(1021477).
5. Technical data
Compressor power:
Refrigerant:
Boiling point:
Water reservoirs:
Manometer:
Excess pressure cut-off: disconnects compressor
Thermometer:
Measurable
temperatures:
Resolution:
Accuracy:
Measurement intervals: 10 s approx.
Powered by two LR44 button batteries
Power supply:
Dimensions:
Weight:
6. Operation
6.1 Filling the water containers

Fill up the water containers with water and
move them with the low edge first under the
evaporator and the condenser.

Turn the beakers in such a way that the high
edge points to the back wall.
120 W, dependent on
operating state
R 134A
(tetrafluorethane
C H F )
2 2 4
-26°C at 1 bar
2000 ml each
160 mm diam., up to 9
bars (low-pressure side,
suction intake), up to 24
bars (high-pressure side,
pressure pipe)
from the mains at 15 bars
-20°C to 110°C
0.1°C
±1°C
115 V, 60 Hz or
230 V, 50 Hz
750 x 350 x 540 mm³
approx. 21 kg

Lift up the beakers and mount them into the
retaining plates.
Fig. 3 Connection of the water reservoirs to the
heat pump
Left: reservoir with its lower edge facing the
pump
Centre: reservoir turned with its lower edge
facing the front
Right: reservoir suspended in holding plate

6.2 Configuration


Follow the safety instructions under point 2

Allow the heat pump to stand upright for at least
7 h before using it if it was tipped over.

To start the pump, fill the two water reservoirs
and connect the pump to the mains.

Turn on the compressor.
Note: the energy meter works even when the
compressor is switched off.
7. Heat pump cycle
1
Fig. 4 Schematic diagram of the heat pump with
compressor (1→2), condenser (2→3), ex-
pansion valve (3→4) and evaporator (4→1)
4
4 3
2