Aerial DH20 Series Instrukcja obsługi - Strona 7

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Instruction manual condensation dryer DH 10 / DH 20
Attention!
The end of the hose must be situated lower than the beginning of the hose (runoff socket)!
The hose must never be bent!
No objects must be placed onto the hose!

6.4 Automatic defrosting

During air drying, ice may form at the evaporator. The volume of ice depends on the ambient
conditions prevailing in the room to be dried. The air dryer is equipped with an automatic air-
defroster. It ensures that, depending on the extent of ice formation, the appliance will be
defrosted automatically according to the following principle:
A temperature sensor measures the condition existing in a critical area of the evaporator.
It transmits the signal for defrosting.
The compressor switches off and the fan runs further.
The ice is thawed with ambient air.
Subsequently, the air drier will operate again in the normal air-drying mode.

Operating conditions

Air driers of the DH-series are suitable for application on closed and heated rooms. DH-air
dryers can be operated within a temperature range from +5 to 32°C and with a relative
humidity of 40 to 100 %. An optimal working is achieved at temperatures from 15 °C and
more.
Attention!
The appliance must not be used under the following conditions:
in rooms of potentially explosive atmosphere
in rooms of aggressive atmospheres, for example ammonia and wood acid
In rooms with water which shows a pH-value outside of 7,0 to 7,4. Remark: In the case of
lower pH-value, corrosion occurs at all metals and damages occurs at mortar containing
materials. In the case of higher pH-value, it comes to irritation of skin and eye mucous
membrane and extreme lime deposits.
in rooms featuring a high concentration of solvents
in rooms of an extremely high ratio of dust´.
In the case of doubtful operating conditions it is recommended to contact the Technical
Department of Messrs. AERIAL or a specialized dealer.
Using an AD-air dryer under inadequate operating conditions will entail that the
warranty becomes null and void!
from Serie July 2003
page 6
AERIAL GmbH