Dri-Eaz 2400 Manuale d'uso - Pagina 4

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authorized distributor or Dri-Eaz Products Inc. at (360)

757-7776.

The Dri-Eaz Service Department must authorize

Service centers other than Dri-Eaz Products' before the

warranty will be approved. Dri-Eaz Products, Inc. is

not responsible for any work performed or repairs ef-

fected upon any of its products, by other than Dri-Eaz

Products, Inc. or an authorized service center.

Danger

Removal or alteration of the grounding plug, or use of

an adapter that defeats the dehumidifier's electrical

grounding, can create risk of serious personal injury or

fire in the event of damage to or malfunction of this

product. Do not use the dehumidifier if you cannot

connect it to a receptacle that accepts a three-pronged

plug. If you are unsure whether a receptacle is

grounded, consult a qualified electrician.

PRINCIPLES OF OPERATION

The DrizAir 2400 dehumidifier is designed to re-

duce the relative humidity by removing moisture from

the air, thereby helping to dry wet carpets, cushion,

floors, walls, contents and structural materials.

The DrizAir 2400 is a commercial refrigerant de-

humidifier. The principle of operation is that moisture-

laden air is drawn into the unit and over the evaporator

coil. This air is cooled by the evaporator coil, resulting

in condensation forming on that coil. This condensa-

tion builds up until water drips into the drainage tray

and is removed through the gravity drain hose or the

automatic pump out system.

The air then passes over the condenser coil where it

is heated to a temperature slightly above that of the

room. This heat is derived from the electrical compo-

nents, the work done by the compressor and from the

latent heat released from the condensed water. This

warm dry air is then discharged from the outlet grill

and circulates around the room absorbing more water

vapor before re-entering the DrizAir 2400.

In order to condense water vapor into liquid, energy

must be removed. About 970 BTU's of energy must be

released to condense one pint of water (8000 BTU's to

condense 1 gallon). This energy is retained within the

water vapor and is referred to as latent heat.

Using the DrizAir 2400, the water vapor that is

condensed releases energy back into the atmosphere

and raises the air temperature in the room. Be aware

that operating the unit in very small, enclosed rooms

will dramatically increase the room temperature. Do

not operate the unit when the ambient air temperature

exceeds 100° F (38° C).

Do not allow any water inside the unit. If electrical

components or wiring become wet, thoroughly dry be-

fore using. Do not unplug the unit while it is operating.

Drying Operation

Wet outside air is constantly passing through a

building and is referred to as "air exchange rate." The

rate depends on a number of factors, including the

wind pressure on the building, and the amount of air

gap around doors and windows. As an example, a typi-

cal home on average will change its air every two to

three hours.

In order to dry the structure of the building in a rea-

sonable time, the relative humidity of the air should be

about 40% Rh at 70° F (21° C). In most cases the air

has to be dried artificially to reduce it to 40% Rh. It is

important that when the humidity is greater than 40%

outside, all doors and windows are kept closed.

Defrosting

When the DrizAir 2400 is operating at a room tem-

perature of 68° F (20° C) or higher, water will normal-

ly emerge from the unit. When operating at lower

temperatures, frost may appear on the evaporator coil

instead of water. An automatic control built into the

DrizAir 2400 allows ice to build up until it starts to

create an adverse effect on airflow through the unit.

During the frost build up, no water will drain from the

unit. At low temperatures this normal ice buildup may

last from 45 minutes to several hours, depending on

conditions.

After a given buildup of ice has occurred, the ther-

mostat senses the associated ice temperature and in-

itiates the defrost cycle. During defrost, the fan

switches off and considerable quantities of water will

drain from the unit. As soon as the ice has melted, the

normal fan operation will resume.

The defrosting period will last up to 20 minutes,

depending upon conditions. Periods between the de-

frost cycle will vary according to operating conditions.

Automatic Pump-Out System

The DrizAir 2400 can automatically pump water up

out of basements 20 feet vertically and up to 40 feet

horizontally. More information on the pump-out sys-

tem is included under the Maintenance section.

Warning