note
To prevent damage during transit the float may have been removed from the flowmeter on the front panel.
If so the following steps should be taken when installing the unit.
1.
Remove the protective cover.
2. Remove the flow tube by first removing the plastic clip at the top of the flow tube, lift the flow tube
up and remove the bottom of the tube clear of the flowmeter assembly. Pull the tube downwards
from the top insert.
3. Fit the float with the pointed end down, into the tube.
4. Push the tube onto the top insert, line the tube up with the bottom insert, pull the flow tube and
the top insert down until the flow tube is fully engaged on the bottom insert, refit the plastic clip.
5. Refit the protective cover.
COntrOls
Mains on/off switch (19)
Controls the mains input to the unit. This should be used in preference to the interlocks (see "heater
indicator") when switching the unit off.
Mains Fuse (18)
Main fuse for the unit, rating 15A @ 240V AC.
temperature Controller (16)
Units prior to Serial Number/5
When the mains switch (19) is set to the ON position the fluorescent indicator panel will display the measured
value of temperature in digital form. Depress and release either the UP or DOWN button and the display
will indicate the set point value for two seconds, and then revert to the measured value.
To alter the set point depress the respective UP/DOWN button and after a delay of two seconds the
set point will change in the required direction. The nine segment bars situated to the left of the digital
readout provide error percentages of measured values of temperature with respect to the set temperature.
Illumination of the centre bar indicates within 1% of set point. The bars above and below the centrebar
indicate, when illuminated, the upscale or downscale errors in increasing magnitude.
temperature controller (16)
Units with Serial Number/5 to /8
When the mains switch (19) is set to the ON position the fluorescent indicator panel will display the measured
and set temperature in digital form. To alter the set point depress the respective UP/DOWN button and
after a delay of two seconds the set point will change in the required direction.
The following control parameters have been factory pre-set:
810
808
Proportional Band
2%
7%
Integral
300sec
110sec
Derivative
40sec
3sec
Approach
3
-
Cycle Time
0.3sec
-
Maximum Power
100%
-
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