Lauda Ecoline RE 204 Operating Instructions Manual page 46

Starting up
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− When the switch-off point is being adjusted by more than 2°C ! display shows MAX
and actual overtemperature switch-off point with 1°C resolution for approx. 4 s.
− The position of the potentiometer is decisive for the setting. The display is just a help
for the setting.
− − − − Setting is possible only up to a upper limit of the operating temperature range + 5 °C.
− − − − Before the unit is running unattended for longer periods overtemperature protection
should be tested. Therefore
− When the bath temperature arises above the
overtemperature switch-off point.
1. Double signal tone sounds
2. The display shows the indication for overtemperature
(TEMP) the fault triangle is flashing
! heating is switched off on both poles,
! pump and refrigeration system are switched off by the
electronics.
− Rectify the cause of the fault.
− Wait until the bath temperature has cooled down below the
switch-off point or set the switch-off point at a higher value.
When the display shows TEMP.
− Reset with the key
− Turn the potentiometer slowly anticlockwise. ! The unit
must switch off at the bath temperature.
− Step 1 - 2 (see above) must follow.
− Set the overtemperature switch-off point again above the
bath temperature and wait until the indication TEMP
appears on the display, then
− reset with the key.