Description:
Manual L4 ES HP; L4 ES HP W
Document Number:
1004289
Created By:
MSHN
Revision Approval Date:
2019-06-28
Revision:
A
© Corroventa Avfuktning AB
7 (42)
This is how the dehumidifier works
L4 ES is an adsorption dehumidifier with built-in air-cooled condenser through which cooled air from the
surrounding area passes, driven by the process/cooled air fan.
The desiccant used in L4 ES is silica gel, which can be regenerated an almost unlimited number of times.
Silica gel is a crystal with a lot of microscopic pores that make the total surface very large. A single gram
has an active surface of 500 to 700 m
2
. It is very powerful and can absorb a volume of water of up to
40% of its own weight. It is not water soluble and therefore cannot be washed away or diverted to the
passing air.
Dehumidification process
The desiccant is placed in a rotor (1). The air to be dried is sucked in through the inlet and
passes a filter (2) by means of a process/cooling air fan (3).
The air then passes the drying rotor, after which the dehumidified air goes through the dry air
outlet (4) to the area to be kept dry. The rotor has axially directed air ducts and consists of a
highly active desiccant, silica gel, bonded in a ceramic structure. The axially directed air ducts
in the rotor give laminar flow with minimal pressure drop.
The rotor rotates by means of a drive motor (5) and a drive belt (6). The moisture that
is adsorbed in the rotor is driven out by a small portion of the process air being heated by the
heater (7) and then passing a smaller part of the rotor, which is thus regenerated and cleaned
by the countercurrent principle.
The wet air is removed via the outlet (8) and led to the air-cooled condenser (9), where it is
cooled by air from the surroundings and then resupplied to the dehumidifier as part of the
new process air. The condensation water in the condenser runs down into the bottom tray
(10) and is removed via the built-in pump (11).
The bottom tray is equipped with overfill protection (12) that shuts off the machine if the
condensation water is not removed. The control electronics (13) are located in the cover. L4
ES is also equipped with a cooling air connector (14). The cooling air ensures that the cooling
air flow across the air-cooled condenser and connector connection makes it possible to
connect a cooling air hose to route the cooling air away. If there is a need to create negative
pressure during the drying process, this is an energy efficient way of routing the cooling air
out. The cooling air flow/The cooling air connector must always be fully open.
