Safety Warnings; Appliance Description; Control Panel - Desa MASTER DH 26 Instruction And Maintenance Manual

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SAFETY WARNINGS

The dehumidifi er must always be connected to an
effi ciently grounded socket. As with all electrical
appliances, failure to observe this safety measure is a
potential source of danger that the constructor does not
respond for in any way.
The appliance must only be dismantled by a qualifi ed
technician using the appropriate tools.
The appliance must always be in an upright position
when it is plugged into an electric socket and must not
be handled with sharp movements. Any water leaking
from the tank or tray could wet the electric parts with the
obvious risk of danger, therefore the dehumidifi er must
always be unplugged before it is moved and the tank
emptied before it is lifted.
Should any water be spilt due to sharp movements, the
dehumidifi er must remain turned off and unplugged in an
upright position for at least eight hours before it can be
turned on again.
This dehumidifi er takes the air in from the rear and expels
it through the front grid, and therefore the rear panel
which holds the air fi lter must be at a distance of at least
15 centimetres from the wall.
The appliance must not be turned on in confi ned spaces
where the expelled air from the front grid Is unable to
circulate freely, however the side panels can be placed
next to a wall without affecting the appliance effi ciency.
This dehumidifi er has been constructed to the strictest
safety standards. No sharp items (such as screwdrivers,
knitting needles or the like) must be introduced into the
front grid or the opening in the rear panel when the fi lter
is removed as that is extremely dangerous for human
safety and can damage the appliance.
Do not wash the appliance with water; just use a damp
cloth after unplugging it from the socket.
Do not cover the front grid with clothes or other items
as this could damage the appliance and be a source of
danger.
Clean the fi lter periodically; on average once a month but
if the dehumidifi er is used in very dusty surroundings
the fi lter should be cleaned more frequently. Refer to the
specifi c fi lter cleaning chapter. When the fi lter is dirty the
expelled air is hotter than normal which damages the
appliance and reduces its effi ciency.

APPLIANCE DESCRIPTION

All portable dehumidifi ers use cooling cycles with compressor.
The appliances are described below.
FUNCTIONS
This dehumidifi er is an appliance working with a cooling cycle
based on the physical principle whereby the air is exposed
to a cold surface and wets it, giving off humidity as drops of
condensation, or ice if the room temperature is very low.
In practice, a cooling machine keeps a coil cold that the air is
passed through and therefore the air cools down and has the
humidity removed. The air then passes through a hot heat
exchanger and is heated up to return to the room dehumidifi ed
and slightly warmer than at the beginning.
Refer to the diagram (Fig. 1-2):
The air is taken in from the rear of the appliance and passes
through the fi lter (1), the cold aluminium coil (evaporator) (2),
the hot exchanger (condenser) (3), the fan (4) and fi nally the
dehumidifi ed air is expelled into the room through the front grid.
The condensed water is collected in the tank (5). A microswitch
(6) stops the appliance when the water in the tank reaches a
set level. The moisture gauge (7) enables the dehumidifi er to
work when the room humidity is higher than the required level.
An electronic board (8) controls the defrosting and prevents any
dangerous starting of the compressor (9) too soon and delays
its ignition.
These appliances have hot gas defrosting devices installed,
with a solenoid valve for the hot gas bypass, a special electronic
board (with double relay) and a defrosting thermostat.
This defrosting system is exclusive to our appliances: in
practice, a system with a thermostat and electronic control that
uses the hot gas bypass only for the time that is strictly needed,
which lengthens the life of the appliance and reduces the time
of the hot gas phase.

CONTROL PANEL

The control panel is in the front of the appliance and contains
four lighted signals (Fig. 3):
•DEFROST (red led): Comes on when the compressor is on
pause or the fi rst ignition is delayed or during the defrosting
phase.
•WORKING (red led): Comes on when the humidity gauge
requests the appliance functions.
•POWER (red led): Comes on when the appliance is powered.
•FULL (green led): Comes when the condenser tank is full;
when this light is on the appliance stops/does not work.