MICROWELL DRY 300 PLASTIK User Manual

MODEL: DRY 300 & 500 PLASTIK

WALL-MOUNTED SWIMMING POOL DEHUMIDIFIER

USER´S MANUAL

EXHAUST GRID

INTAKE GRID

HYGROSTAT

UNIT COVER

l Do not manipulate with the device with wet hands.
l Do not spray any flammable substances into the equipment; this might lead to fire.
l Do not clean the device with water.
l Do not clean the equipment with aggressive cleaning agents, this might lead to damage or deformations.
l When cleaning plastic parts do not use any cleaning agents unsuitable for the cover of the dehumidifier (household

cleaning agents, solvents, bleaching agents, benzene, diluents, rough cleaning powder, cresol, chemical agents).
Instead, sweep the dehumidifier cover with a soft cloth or a sponge.

l Never throw or insert any objects into any hose or opening.
l The cover is made of plastic. Do not manipulate with lighted cigarette, cigarette ashes, or any other kind of fire in

vicinity to this part.

l Use this device exclusively for the intended purpose, as described in the attached instruction manual. Do not use

parts which are not recommended.

l Never block the air opening of the product. Protect the air openings from clogging by particles, hair etc.
l When the device is not running correctly (smoke, smell etc.), shut down the device by a circuit breaker in the

switchboard.

l Repair and dislocation must be performed exclusively by a service technician.
l Before cleaning the device, switch off the circuit breaker in the switchboard.
l Do not place any objects onto the device.
l When you do not intend to use the device for a longer time, switch off the circuit breaker.

WALL-MOUNTED SWIMMING POOL DEHUMIDIFIER - USER´S MANUAL

Thank you for your decision to purchase our device.
Please read this user manual carefully before switching on the device.
Please keep the instructions in this practical guide for your quick know-how.
We do not take responsibility or warranty in case of damage, loss or impairment caused by incorrect usage,
or by usage for other purposes not described in this manual.

Contents: 1. Safety measures

2. Specifications for use

3. Instructions for use

4. Instructions for maintenance

5. Servicing the unit

6. Installation guide

7. Technical data

1. SAFETY MEASURES

2. SPECIFICATIONS FOR USE

The units are designed especially for use in indoor swimming pools, spas and saunas. They can also be very useful in laundries,
drying rooms and elsewhere.

2

The Microwell DRY 300 PLASTIK is designed for halls with a swimming pool surface area of up to 30 m. The Microwell DRY 500

2

PLASTIK is designed for halls with a swimming pool surface area of up to 60 m .
The condition for using the unit is maintaining the room temperature within the range between a minimum of 22°C and
a maximum of 35°C. Ideally, the air in the room should be 2-3 °C warmer than the water in the swimming pool.

2

The built-in humidistat is located at the bottom of the unit, on the left. The built-in hygrostat reads the humidity of the incoming air
and, depending on the set value, does or does not switch the compressor on. In the central position of the regulator, the unit secures
the average relative humidity of 60%. In indoor swimming pool halls, the correct air humidity should range from 55 to 65%.
Decreasing the humidity under this range is not desirable either from the physiological viewpoint or from the viewpoint of protection
of the building. Moreover, it increases the electricity consumption. The humidistat can be controlled by the user.

A view at the hygrostat scale

3.2. Humidity control by means of a remote humidistat (upon request)

The dehumidifier may be, upon request, equipped with a remote humidistat. In such case, the dehumidifier has two humidistats.
One of them is built in the dehumidifier; the other one is remote, in a separate casing. The dehumidifier is primarily controlled by
the remote humidistat, provided that the built-in humidistat in the dehumidifier is set for a higher value than the remote humidistat.
If the built-in humidistat were set for a lower value than the remote humidistat, it would take over and the control of the
dehumidifier would not react to the signals from the remote humidistat. Therefore, it is best to set the built-in humidistat to the

value of 70 % RH or more. The built-in humidistat fulfils a back-up function, should the remote humidistat fail to function or should
its battery go flat. It is best to set the remote humidistat to the value in the extent of 55 to 65 % RH. Decreasing the humidity under
this range is not desirable either from the physiological viewpoint or from the viewpoint of protection of the building. Moreover, it
increases the electricity consumption.

Left: Remote control receiver, which is built into the dehumidifier by means of distribution connectors
Right: External hygrostat with a built-in radio transmitter

Location:

The remote humidistat is to be located in the most humid area of the room - usually in a corner directly opposite the dehumidifier.
This guarantees that the humidity of any area of the swimming pool hall will not exceed the humidity value set in the remote
humidistat. The regulator must not be placed on a metal plate because the plate would disturb the high frequency signal and thus
prevent the communication with the remote-controlled switch in the unit.

Automatic mode:

If the air in the room exceeds the desired humidity value, the regulator will switch the dehumidifier on.

Changing the battery:

The remote humidistat is charged by a 2 1.5V alkaline battery. Only alkaline batteries may be used, since non-alkaline batteries
might leak and damage the whole appliance. The durability of a battery is approximately 12 months. The regulator automatically
checks the level of its battery. If the battery voltage drops under the permitted value, battery sign on the display of the humidistat
comes on. It is then necessary to change the battery as soon as possible. If the battery is not changed and goes flat,
the dehumidifier will be controlled by the built-in humidistat in the dehumidifier.

3. INSTRUCTIONS FOR USE

3.1. Humidity control by means of the built-in humidistat

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WALL-MOUNTED SWIMMING POOL DEHUMIDIFIER - USER´S MANUAL

Automatic function during a power failure:

If the power supply of the dehumidifier is interrupted during the operation of the remote humidistat, then, once the power supply is
renewed, the dehumidifier will automatically return to the latest setting. This recovery will occur within 15 minutes after the power
supply return.

Setting:

In the setting mode the brightness of the LCD display can be set. By pressing + or buttons the LCD display' s brightness is added or
reduced. This setting is for all displays.
Setting of code and test switching, relay for heating control and for dehumidification control. Data display about the manufacturer.
Average temperature and humidity display for the last 32 hours. Hysteresis setting for 19% humidity range and 0.1-0.9°C
temperature range.

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WALL-MOUNTED SWIMMING POOL DEHUMIDIFIER - USER´S MANUAL

Information about
the manufacturer

Statistics

Next
Confirmation
Back

Humidity hysteresis
Temperature

hysteresis
Back

Heating switch on/off
Dehumididication

switch on/off
Back

Add brightness
Reduce brightness
Back

Technical data:

Switch unit

Control unit

Battery longevity

Power supply

Impact

2 x 1,5 AA alkaline batteries

230 V/0,1 VA

min. 1 year (according to battery type)

from 20 up to 30 m in building

(100 m in public place)

Carrier frequence
Setting range of requested humidity
Setting range of requested temperature

433,92 Mhz

15 - 85% r.h.

Operating difference
Measurement precision
Measurement sensivity of humidity

5 - 39 °C

5% r.h.

1,5% r.h.

1% r.h.

Measurement sensivity of temperature
Adjustable range hysteresis of humidity switching

Adjustable range hysteresis of temperature switching

Enclose temperature

0,1% °C

1 - 9% r.h.

+20 - +40 °C

Switching capacity
Contact

Dimensions
Protection type

250V/8V

voltage, switching

71 x 71 x 26 mm

81 x 81 x 36 mm

IP 54

0,1 - 0,9 °C

Under the inside cover of the unit, there is a two-position fan mode switch. In the first position, the fan runs even if the compressor
of the appliance has stopped: continuous operation of the fan. In the second position, the fan only runs simultaneously with the
compressor: periodical duty of the fan. The continuous operation mode of the fan is preferable, since the humidity reader built in
the device continuously reads humidity, and therefore a greater accuracy is reached. At the same time, continuous operation of the
fan results in better air circulation in the room. The installation work supplier selects the mode of the fan according to the request of
the user.

3.3. Control of the fan

Switch of the fan operation

Start-up of the compressor is, due to its protection, delayed by 3 minutes. Depending on the humidity of the environment, it may
take even longer for compressor to start operating. Once the compressor stops operating, the operation is renewed automatically,
at the earliest after three minutes. The user must not handle the setting element of the delay-action relay.

3.4. Control of the compressor

It is necessary to make sure that the suction inlet and the exhaust outlet are not covered. It is forbidden to place towels or clothing
items onto the exhaust outlets to dry them. The unit's cover can be cleaned with standard cleaning agents using a soft cloth or
a sponge. If water dripping out of the unit, please check the condensed water drain and make sure the pipe is not obstructed.

At least once a year, it is necessary to have the unit checked and cleaned by a service specialist. This is inevitable to secure a long
service life of the unit. We do not recommend the user to clean the interior elements of the unit, as this might cause a damage to the
unit. The unit contains mobile elements and live elements, therefore the interior parts may only be cleaned by a certified electrician
trained to service refrigerating appliances.

The unit must be installed in compliance with the local installation and electrical installation regulations !

6.1. Location of the unit

To ensure maximum efficiency, it is necessary to install the unit as high above the ground as possible. It is forbidden to install the
unit onto the ground. It is essential to ensure good air circulation by allowing at least 150 mm of free space under the unit and at
least 200 mm of free space above the unit. For the purposes of maintenance, it is further necessary to allow at least 200 mm of free
space on both sides of the unit.

4. MAINTENANCE INSTRUCTIONS

5. SERVICING THE UNIT

6. INSTALLATION GUIDE

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Continuous duty of the fan

Periodical duty of the fan

WALL-MOUNTED SWIMMING POOL DEHUMIDIFIER - USER´S MANUAL