2. Operation
2.1 Placement of instrument
Heating block must be set on a level and dry surface at room tempera-
ture.
2.2 Operation instructions
Connect the heating block to the mains. Switch on the instrument with
the power switch located on the back side. After powering on, the instru-
ment is initialised, a signal tone sounds and the version number (e.g.
r 1.01) briefly appears in the upper display. After that, the underline char-
acters appear on both displays, the heating block is in sleep mode.
2.3 Programme selection
X
- key
Selection of a preprogrammed temperature. The last used temperature
is always displayed first. The key operates in tip-scroll mode. Only pro-
grammed temperatures are displayed. The temperature values are al-
ways displayed in low-to-high order.
Y
- key
Selection of a preprogrammed time. The last used time is always dis-
played first. The key operates in tip-scroll mode. Only programmed
times are displayed. The time values are always displayed in short-to-
long order.
W
- key
Pressing the W - key starts the selected programme.
During the warm-up phase, the WAIT-LED and the selected temperature
are flashing in the display. When the desired programme temperature
is reached, the RUN-LED starts flashing and the selected time starts to
run. When the programme terminates, a signal tone sounds for 60 sec
and "End" appears in the time display.
If the W- key is not pressed within 5 sec after the programme se-
lection, the programme returns into sleep mode.
If the actual temperature of the heating block exceeds the selected
temperature, the programme is not started. "HIGH" appears in the up-
per display; the heating block must cool down first. During the warm-
up phase, the current temperature can be displayed by pressing the
X - key.
9