Bühler technologies TC-Double Plus, Инструкция по установке и эксплуатации, Страница: 16 / 49

TC-Double (+)
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
After switching on the cooler the block temperature will be displayed (block 1). The display will flash until the block temperature
has reached the preset target value (± adjustable alarm range). The status contact is in the Alarm position.
Once the target temperature range has been reached, the temperature will continuously be displayed and the status contact
switches over.
If the display flashes during operation or an error message appears, please refer to bullet “Troubleshooting”.
Please refer to the data sheet for performance data and maximum ratings.
5.1 Description of functions
The cooler is controlled by a microprocessor. With the factory preset the control already incorporates the various characteristics
of the built-in heat exchangers.
The programmable display shows the block temperature in the selected display unit (°C / °F) (factory preset °C). Application-spe-
cific settings can easily be configured guided by the menu, using the 5 buttons. For one, this applies to the target outlet dew
point, which can be set from 2 to 20 °C (36 °F to 68 °F) (factory preset 5 °C/41 °F).
And then the warning thresholds can be adjusted for low and excess temperature. These are set relative to the outlet dew point
τ
a
setting.
For the low temperature the range is τ
a
-1 to - 3 K (at a minimum 1 °C/ 34 °F cooling block temperature), for the excess temperat-
ure the range is
τ
a
+1 to +7 K. The factory presets for both values are 3 K.
The flashing display and the status relays indicate the conditions are below or above the configured warning range (e.g. after
switching on).
The status output can e.g. be used to control the sample gas pump to allow for the gas flow to only be switched on once the per-
missible cooling range has been reached or shut off the pump in the event of a moisture detector alarm.
The separated condensate can be drained via connected peristaltic pumps or add-on automatic condensate drains.
Fine mesh filters can also be used, which in turn can be installed in optional moisture detectors.
The glass dome allows the dirt level of the filter element to easily be determined.
The moisture detector is easy to remove. This may be required if a condensate enters the cooler due to a malfunction and the
peristaltic pump or the automatic condensate drain is unable to remove it.
The TC-Double has an additional cooling stage for pre-cooling the gas (heat exchanger 2), the block temperature of which varies
by ambient temperature and load. The target value of the pre-cooling stage corresponds to that of block 1.
14 Bühler Technologies GmbH BE440021 ◦ 09/2021