Technical data

Rev.February 1996 Conti-Dryer Page 13
CD 25-600
Drying temperatures and times are directive only, as these can vary from one producer to
another. Therefore it is advisable always to check with the supplier of the relevant raw
material.
The capacities stated are obtained at an ambient temperature of 20° C and a relative
humidity of 65% under which conditions a fi nal moisture content of 0.04% is obtainable.
A higher relative humidity could be the reason as to why the stated value cannot be
obtained in all cases.
Certain materials will require a lower residual humidity than the one stated, especially in
matters of extrusion, and in such cases it will be necessary to use a dry air dryer type
DDL, DDM or DCD.
3.5 Security measures
3.5.1 Con-Evator support
All CD units, except for the smallest type, are equipped with a bracket supporting the
Con-Evator vacuum conveyor when the lid is open.
3.5.2 Overtemperature protection
The electronic temperature controller is equipped with an electronic overtemperature
protection which automatically cut off the control current of the heater, if the temperature
rise 12° C above adjusted value. In case of overtemperature condition, a red diode on the
control panel lights up.
The overtemperature protection is reset by switching the main switch of the machine on
and off.
3.5.3 Fire protection (see fi g. 8.1)
All Conti-Dryer units are equipped with a fi re protection (83) in the form of a thermistor
(bi-metal) of 210° C.
At a temperature above 210° C the circuit-breaker overload of the heater in the control
is released thus cutting off main power to the heater. When the thermistor is suffi ciently
cooled and still in working condition, the protection is reset on the release button of the
circuit breaker overload by switching the main switch of the machine off and then on.