Two Speed and Variable Speed Units.
Your evaporative air conditioner has control
switches to provide for the benefits of fresh
air ventilation and cooling at high and low
air flows. There are two types of control
switches available: Two Speed (Fig. 1) and
Variable Speed (Fig. 2).
Your control panel offers independent
control for the fan and cooling functions.
Using Your Air Cooler
UNIT
AREA (m )
Evaporative air coolers provide very
effective cooling by drawing outside air
through filter pads saturated with water.
This water washes the air and cools it by
the process of evaporation. There are a
number of operating techniques and
circumstances of which you should be
aware to get the best performance from
your evaporative air cooler.
To provide effective cooling or ventilation,
the air cooler must be operated with
sufficient openings to exhaust the air. For
example: windows, doors or ducts. The
location of the opening(s) will determine
the pattern of cool air flow. The following
are the minimum opening sizes required
in square metres:
EA90 0.4
EA120 0.6
EA 150 0.8
In light wind conditions more cooling can
be obtained by opening additional
windows and doors. In windy conditions
close openings facing the wind.
Generally, openings opposite the supply
vents are best. Some experimentation will
soon show the arrangement most suited
to your requirements. For a multiple outlet
system, this is generally 1 (one) window
opened 100 to 150 mm per outlet.
For a short time, when operating with new
filter pads, you may detect an odour like
"wet timber
”
. This is the filter material
becoming conditioned to use.
In many areas the water supply is quite
hard. When this water is evaporated
through the filter pads, the hardness is
deposited as a scale on the pad. To
reduce this scale build-up and to retain
efficient filter pads a small amount of
water is bled from the system.
The continuous drain of small amounts of
water ensures that fresh water is added to
dilute any build-up of scale or salts. The
bleed rate for your air conditioner will
depend on local operating conditions and
will be adjusted during installation.
2
To Start the Air Conditioner
To Stop the Air Conditioner
(1) Switch the COOL control on.
(2) Turn on the AIR (fan) control and using
the SPEED switch (HI/LO switch or Variable
knob), select the fan speed you require.
When ventilation only is required (air flow
with no cooling) turn the COOL switch off,
and select the fan speed to provide the air
flow you require.
Switch the COOL control off, then switch the
AIR control off.
®
2
EA Evaporative Cooler
