Operating instructions

34 UP/BP/ULP/SLP 400 - 800
Should the temperature rise above the set working temperature,
 The adjustable overheat controller TWW takes over the
temperature control, if the set safety temperature is
reached.
 The adjustable temperature limiter TWB switches off the
heating and must be reset by pressing the „alarm set“
button
 The "alarm" lamp lights up
 The working controller shows " ALARM "
In this case please check the TWW or TWB as described and readjust it if neces-
sary. If there should be a fault please contact an authorised service station for
Memmert equipment.
12.2 Temperature limiter (TB), Class 1 in accordance with DIN 12880
In addition to the TWW or TWB this unit is equipped with a factory- set temperature limiter
TB (protection Class 1 according to DIN 12880), which under all conditions ensures
protection of the unit and the environment.
In case of failure of the working controller and of the TWW or TWB the TB operates when
the factory temperature setting is exceeded.
Should the temperature rise above the set safety temperature, the temperature
limiter switches off the heating.
 The "alarm" lamp lights up
 The working controller continues to display the actual
temperature.
 Units with fan: the fan keeps running.
Klick
 In this case please reset the TB by pressing the red but-
ton, located on the rear side of the unit (next to the power
cord) after the unit has cooled down. Press until you hear
a "click" sound.
If there should be a fault please contact an authorised service station for
Memmert equipment.
12.3 Possible problems during the first run
If the unit is exposed for longer periods to temperatures below freezing or to strong
mechanical shocks which may occur during transport, the temperature limiter may have
been activated.
In this case please reset the TB as described above.