Operating procedures
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4.
Operating procedures
4.1. Power connection
Caution
Only connect the unit to a power socket with earthing contact (PE
– protective
earth).
The power supply plug serves as safe disconnecting device from the line and
must be always easily accessible.
Never operate equipment with damaged mains power cables.
Regularly check the mains power cables for material defects (e.g. for cracks).
We disclaim all liability for damage caused by incorrect line voltages!
Check to make sure that the line voltage matches the supply voltage specified
on the identification plate.
Deviations of ±10 % are permissible.
4.2. Switching on
Turn on the mains power switch (1) to place the unit into
operation. The control light in the switch will illuminate.
The compressor starts only when the immersion thermostat
mounted on the transparent bath is switched on by pressing the
Start key. The flow-through cooler receives the corresponding
signal via the control lead.
(see 3.3.
The flow-through cooler is switched via the control lead during
normal operation and also if a failure appears
.
5.
Troubleshooting
Malfunction of compressor:
The cooling compressor is equipped with an overload protection
device that will be triggered by overheating or excessive current
consumption. Possible causes include insufficient ventilation or
contaminationof the condenser.
After a cool-down phase, the motor is automatically switched on
again.
Interruption of the cooling loop by a bended tube.
In such case it is essential that the bath liquid is suitable for lower
temperatures than the active working temperature. There is
every risk for the heat exchanger of the flow-through cooler to
freeze (e.g. using a water-glycol mixture).
Both disturbances might cause the temperature in the transparent
bath to rise. The immersion thermostat provides a warning function
that instantly reports a temperature deviation if set correctly.
