TFT AD800E User manual

© 2018 TFT DryAir
Dehumidifier
AD800E
Technical manual
Unit 400Vac-3Ph-50Hz

Pagina 2 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Index
General information governance and security concepts .................................................................... 4
Warranty.......................................................................................................................................... 5
Copyright.......................................................................................................................................... 5
Safety symbols used ......................................................................................................................... 6
Applications ..................................................................................................................................... 7
Principle of operation ....................................................................................................................... 7
Product description .......................................................................................................................... 8
Structure.................................................................................................................................................................8
Rotor.......................................................................................................................................................................8
Drive system.......................................................................................................................................................8
Bearings .............................................................................................................................................................8
Filters......................................................................................................................................................................8
Fans for the process and re generation air ...........................................................................................................8
Reactivation air heater coil ....................................................................................................................................9
Electrical panel .......................................................................................................................................................9
Possibility of operation...........................................................................................................................................9
Installation ..................................................................................................................................... 10
Equipment requirements and installation location .............................................................................................11
Connecting channel..............................................................................................................................................11
General instructions.........................................................................................................................................11
Specification for the expulsion channel of moist air ........................................................................................11
Specifications for the input channel of reactivation air...................................................................................12
Specifications for the channels of process air and dry air in case the dehumidifier is installed inside the room
to be dehumidified...........................................................................................................................................12
Specifications for the channels of process air and dry air in case the dehumidifier is installed outside the
room to be dehumidified..................................................................................................................................12
Electrical connections...........................................................................................................................................13
First start-up................................................................................................................................... 14
Preliminary checks................................................................................................................................................14
Maintenance .................................................................................................................................. 15
Safety....................................................................................................................................................................15
Filters....................................................................................................................................................................15
Rotor.....................................................................................................................................................................15
Electric engines.....................................................................................................................................................15
Heating coil...........................................................................................................................................................16
Trasmission belt of the rotor................................................................................................................................16
Seals......................................................................................................................................................................16
Overall summary service intervals .......................................................................................................................16
Inspection ...................................................................................................................................... 16
Storage .................................................................................................................................................................17
Unpacking.............................................................................................................................................................17
Lifting and handling..............................................................................................................................................18

Pagina 3 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Troubleshooting ............................................................................................................................. 19
Technical data ................................................................................................................................ 20
Dimensions...........................................................................................................................................................20
Spare Parts List:....................................................................................................................................................21
Component data............................................................................................................................. 22
Electrical connections: Preliminary Information Security................................................................. 23
Electrical data.......................................................................................................................................................23
HOW TO CONNECT THE POWER SUPPLY .............................................................................................................24
Electrical wiring: ............................................................................................................................. 25
Description of adjustment control................................................................................................... 26
Symbol Display Description..................................................................................................................................26
Description Parameters........................................................................................................................................27
Alarm menu..........................................................................................................................................................31
Description connection external humidistat........................................................................................................34

Pagina 4 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
General information governance and security concepts
Anyone who uses the dehumidifier AD must have at his/her disposal this technical manual and know
the security concepts written in this book.
All the information described in this manual are only suggestions for the optimum use; they don’t
intended to replace personal responsibility and/or local safety regulations.
Maintenance and malfunction must be performed only by authorized personnel.
The installation of the controller and its electrical connection describe in the following, must be
carried out by authorized personnel only. Repairs must be done by authorized personnel only.
This dehumidifier must not be installed in explosion-endangered areas.
The unit must not be immersed in water or constantly exposed to water spray.
Do not insert anything such as fingers or branches into the air vents.
The power supply is constantly present in the switch for the unit.
Turn off input power before opening any panel of the dehumidifier.
Allow the unit to cool down before maintenance work (at least 15 minutes after turning off).
After power failure or mains disconnection, an automatic restart of the machine may take place after
voltage return. So, turn off and padlocked always switch power OFF before any maintenance work.
The panels of the dehumidifier must be removed only to perform maintenance.
The dehumidifier can be installed only to dehumidify air at atmospheric pressure.
Do not operate the unit without filters or when the filters are soiled.
Never remove the labels or allow them to become obscure.
Read this information and keep this manual accessible in the immediate vicinity of the dehumidifier.
The monitoring operations and maintenance must be performed in strict accordance with the
instructions.
Not attempt to repair or maintain the dehumidifier and always contact TFT for any repairs or
maintenance.
Do not modify the unit without written authorization of TFT.
During operation or other interventions on the machine, users have the responsibility to asses: the
safety of everyone involved, the safety of the unit and other assets, the protection of the
environment.

Pagina 5 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Warranty
The warranty period is valid from the date on which the unit is out of the factory, unless otherwise
specified in writing.
The warranty is exclusively limited to the repair or replacement –free of charge- of parts which are
acknowledged as defective by TFT due to defects in materials or manufacturing.
All warranty claims with proof of defect must be received within the applicable warranty period for
this warranty to be effective. Every claim must have the evidence that the unit is properly operated
under conditions of normal use in accordance with applicable safety and regulatory requirements. All
requests must specify the type of unit and the serial number. This information is printed on the rating
plate, see the paragraph “Marking Unit”.
Repairs or maintenance by non-qualified personnel will invalidate the warranty, as will the use of non-
approved spare parts. In order for the warranty to be valid, the customer must scrupulously
documented any repair and maintenance. Rivolgersi sempre a TECNOFRIGO TUSCANY per l’assistenza
e le riparazioni.
TECNOFRIGO srl’s liability shall not include defects caused by inadequate maintenance or repairs or
by incorrect installation by the Buyer, or else by alterations made without TECNOFRIGO’s written
approval.
Conformity with directives
The dehumidifier is in conformity with the essential safety requirements set the revised Machinery
Directive 2006/42/EC, the Low Voltage Directive (LVD) 2006/95/EC, the ElectroMagnetic
Compatibility Directive (EMC) 2004/108/CE e the RoHS Directive 2011/65/EU.
The dehumidifier is produced by a company certificated ISO 9001:2008.
Copyright
The contents of this document may be changed in the future, without prior notice.
This manual contains proprietary information protected by copyright. It’s not allowed to copy and/or
to reproduce in whole or in a part the content of this manual without the written authorization of
TFT.

Pagina 6 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Safety symbols used
GENERIC DANGER
Observe all signs placed beside the pictogram. Failure to follow the warnings and instructions may result in
several injury or death to the machine operator, a bystander, or a person inspection or repairing the machine.
ELECTRIC DANGER
Observe all signs placed beside the pictogram. The symbol indicates components of machine or, in this manual,
actions that could generate a fulguration risk.
MOVING PARTS
This symbol identifies hazards associated with moving parts.
HOT SURFACES
This symbol identifies the presence of exposed hot surfaces that will cause serious burn injuries.
SHARP SURFACES
This symbol indicates that dangers may arise, for example, due to uneven surfaces, sharp edges, or the use of
operating materials and adjuvants.
ELECTRICALPANEL AUTHORISED PERSONNEL ONLY
Operation, maintenance and/or repair of the electrical panel must only be carry out by personnel trained and
qualified to work with electrical devices.
GROUNDING
This symbol identifies the grounding.
RECOVERABLE/RECYCLABLE MATERIAL

Pagina 7 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Applications
The dehumidifier AD is a desiccant dehumidifier, a rotary type using a humidity adsorbing rotor to
dehumidify air at atmospheric pressure. It can be used to dehumidify air at relative humidity up to 100%
and temperature from -30°C to +40°C.
There are so many applications and the following are some examples:
Humidity control in production processes
Drying of temperature-sensitive products
Maintaining the proper level of humidity in the storage warehouses
Corrosion protection of plants and in general of ferrous materials
Humidity control in museums and libraries
Drying properties after flooding and construction
Improvement of the environment everywhere occurs excessive moisture
Principle of operation
This dehumidifier works in a continuous process with
two air streams, process air and reactivation air. As
shown in the figure, a honeycomb rotor dehumidifier
consists of a honeycomb adsorbent rotor, which is
rotated, in a casing at a low speed of around 8 rph by a
geared motor in the outer circumferential drive
method. The casing is divided into two sectors of
process zone and re generation zone.
Process air is led in the process zone to contact the
rotating honeycomb rotor. While it passes through the
honeycomb channels, water vapor is adsorbed and it
becomes dry air to be supplied. Sometimes later, the honeycomb rotor having got wet due to moisture
adsorption enters the regeneration zone by rotation. The rotor is reactivation by hot air passing through
honeycomb channel and turns again to the process zone. Dry air can always be produced in stable
conditions by this continuous cycle. Process air is dried in the rotor between -30°C and +40°C, the re
generation air is beaten by an internal coil up to about 100°C.

Pagina 8 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Product description
The dehumidifier is designed to meet the requirements of the degree of protection IP54 of IEC.
Structure
The structure is made with pre-painted double-shell galvanized/AISI 304 steel panels (sandwich
type).The top panel can be removed for maintenance purpose. The connection to the dehumidifier can
be made with standard gimped channels.
Rotor
The ceramic matrix is combined with synthesized silica gel to form the most advanced dehumidifierrotor.
The ceramic matrix gives structural support for the thin layer of advanced silica gel. The synthesized
advanced silica gel is self-bonding to the ceramic matrix and to itself through the matrix, filing in all the
voids in the matrix and totally encapsulating the ceramic. Only the desiccant in contact with air-stream.
The advanced form of silica gel has an extremely high “affinity” for water vapor. It has an active surface
with numerous macro-pores of uniform size and shape. The many internal micro-pores quickly adsorb
humidity and are readily de-sorbed for convenient and continuous dehumidification. The synergistic
form of the desiccant and ceramic matrix allows for distinct advantages over both granular adsorbents
are impregnated desiccants. With the advanced silica gel rotor are no granules and no dusting. It stops
adsorbing moisture hen moisture is in equilibrium with the moisture in the passing or surrounding air-
stream. There are never any deliquescent problems associated with this system.
Furthermore, it can be coupled with a pre-cooling coil.
Drive system
A belt drive system controls the movement of the rotor. The strap exerts its traction on the outer edge
of the rotor and is driven by a pulley on the motor reducer. A special device maintains the correct belt
tension to prevent slippage of the belt. The correct direction of rotation and the transmission can be
verified by opening the front panel.
Bearings
The rotor is provided with ball bearings. The rotor shaft is stainless steel.
Filters
The dehumidifier has two filters (G3) separate: one on the input process air and the other one on the
input reactivation air. In option filters with different efficiency can be installed.
Fans for the process and re generation air
The fans are directly coupled to a single-phase motor and/or three phase class IP55, ISO F, Class B. They
are accessible for maintenance by removing the panel inspected. The fans can be controlling with a
frequency converter for controlling the speed of rotation. The fan control process by default is set at a
fixed speed, but it can be configured with variable speed and controller by an external signal, or by a
pressure sensor.

Pagina 9 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Reactivation air heater coil
The electric heaters reactivation is of the type with steel elements, with double safety protection for
high temperature, eliminating the risk of overheating and allows a control steps for a power modulation
from 0%, 50% and 100% of the yield of dehumidifier.
Electrical panel
The electrical panel is located inside the unit. Switches and indicators of operation are located outside
the dehumidifier.
Possibility of operation
The mode selector on the outside of the dehumidifier allows the following modes:
0 dehumidifier stopped (in case of alarm, this position works by Reset)
MAN dehumidifier in operation continuously (power 100%)
AUTO dehumidifier controller by a humidistat or by an external signal
After the dehumidifier has been switched off, wait at least for 15 minutes before going
inside in order to allow the dehumidifier to cool.

Pagina 10 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Installation
GENERAL INFORMATION AND USE OF SYMBOLS
Before performing any type of operation each operator must know perfectly the operation of the machine and
its controls and must have read and understood the information contained in this manual.
All operations performed on the machine must be done by qualified staff in accordance with national legislation
in force in the country of destination.
The installation and maintenance of the machine must be carried out according to national or local regulations.
Do not get close and do not insert any objects into moving parts.
WORKERS’ HEALTH AND SAFETY
The operator's workplace must be kept clean, tidy and free from objects that might hinder movement. The
workplace should be adequately illuminated for the work in. Insufficient or excessive lighting can generate risks.
Make sure work places are always adequately ventilated and suction system are always functional, in excellent
condition and in compliance with the provisions of the law.
PERSONAL PROTECTION DEVICES
Operators engaged in the installation and maintenance of the machine must wear the appropriate personal
protective equipment required by law and listed below.
Protective footwear.
Eye protection.
Protective gloves.
Respiratory protection.
Hearing protection.

Pagina 11 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Equipment requirements and installation location
The dehumidifier AD must be installed vertically inside a building fitted with a solid and level flooring
and be fastened securely to the floor.
Leave a space of 1000mm on the inspection side of dehumidifier for maintenance, replacement of filters.
Connecting channel
The dehumidifier can be installed inside or outside the room, which is going to be dehumidified. To
improve the performance of the installation is recommended to remove the flow from the air intake.
General instructions
The connections for the process air and the reactivation one are designed in accordance with ISO 13351.
The connections of rectangular ducts contain inserts to secure the screws M8.
NOTE! The dehumidifier is designed for specific process air-flows, which correspond to the dimensions
of the fans installed and must not be connected to existing air conditioning systems.
Upon installation of the network of ducts between the dehumidifier and the inlet and outlet connections
for inlet and outlet, observe the following guidelines:
The length of the network of ducts must be minimal in order to limit the pressure drops.
For best performance, all stiff joints of process and reactivation air ducts must be sealed for air
and steam.
The process air duct must be isolated in order to avoid the formation of condensation on the
outside, if the temperature inside the duct falls below the dew point of the ambient air.
If there is a risk of sub-zero temperatures, the ducts must be insulated.
The high rate of humidity of the air, issued by the unit, it could cause condensation of water inside
the ducts. By insulating the ducts the amount of condensate decreases.
The horizontal ducts of moist air must be installed with a slight slope (away from the
dehumidifier) for the drainage of any condensate. In correspondence of the lowest points of the
exhaust duct of the moist air devices shall be installed to drain the condensate. The moist air duct
must be made of anticorrosive material (for example, stainless steel, aluminum, plastic, etc.) And
it must withstand temperatures that can reach 100 °C.
The ducts must be designed so as to prevent the infiltration of rain or snow in the dehumidifier.
To reduce the transmission of vibration and/or noise along the rigid ducts, the installation of
flexible watertight joints and any silencers is recommended.
The ducts mounted directly on the dehumidifier must be equipped with suitable support to
reduce the load and the voltage due to the weight and movement of the ducts themselves.
You must install the manual dampers on the flows of the process and reactivation air, to maintain
the functional efficiency of the unit
The total pressure drop of the process and reactivation air ducts should not be higher than the
available pressure of the fans.
Specification for the expulsion channel of moist air
The humid air from the dehumidifier must be expelled outside. The channels must be as short as possible
to minimize the possibility of condensation of moist air within them. This channel should be slightly

Pagina 12 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
sloped to prevent any return of condensate inside the dehumidifier. If the channel of the moist air is very
long or needs to be upwards, realize a drainage hole of 5 mm at the lowest point of the discharge
channel. It must be installed an air flow regulation damper. Protect the channel output with a grid. If
there is a risk that the temperature external to the conduit is very low, it is mandatory to insulate piping
to prevent the formation of condensation inside the duct.
Horizontal Vertical
Expulsion Expulsion
1. Slop down
2. Vertical expulsion of moist air
3. Wire mesh
4. Condensate drainage
Specifications for the input channel of reactivation air
This channel must be as short as possible. To prevent the entry of foreign bodies, protect the entrance
channel with a grid. It is not necessary to isolate the pipe, which may be inclined downwards. In some
installations, the reactivation air can be aspired from the room where the dehumidifier is installed and
in this case it is not necessary any channel.
It is advisable to install a damper on the reactivation circuit to allow a proper air flow calibration.
Specifications for the channels of process air and dry air in case the dehumidifier is installed
inside the room to be dehumidified
In this case, it’s not necessary the addiction of aspiration channels for the process air; the installation of
a protective grille is only required. The dry air produced must be ducted for the distribution inside the
dehumidified room.
Specifications for the channels of process air and dry air in case the dehumidifier is installed
outside the room to be dehumidified
In this case normally the inlet and outlet are channeled.
When the suction of air takes place from the outside, the outlet of the air duct must be at a sufficient
height above ground level in order to prevent the suction of slag and dust. The air intake must be

Pagina 13 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
protected from possible contaminants, such as exhaust gas, vapor or harmful emissions.
To prevent the ingress of moist air in the air intake of process or reactivation, the intake of the outside
air must be positioned at least 2 meters from the exhaust duct of the moist air.
The ducts must be designed so as to prevent the infiltration of rain or snow in the dehumidifier.
The dehumidifier aspires the dehumidified air by the environment or by a system of air pre-treatment
(pre-cooling or pre-heating). The dry air produced can be sent to dehumidified environment or to a
system of post-treatment.
A control damper can be installed to regulate the flow of dry air.
Electrical connections
In this regard, see the attached wiring diagrams.

Pagina 14 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
First start-up
Preliminary checks
CAUTION! The installation and the first start-up of the unit must be TFT.
CAUTION! The power supply is constantly present in the general switch of the unit. Risk of
electric shock.
For the first start-up, perform the following checks:
1. Make sure the power switch electrically isolates the dehumidifier and the isolator is in the OFF
position.
2. Open the panels of the dryer and make sure there are no foreign objects inside and in the electrical
cabinet.
3. Ensure that the flow control dampers are fully open and that the pipes are clean and unobstructed
by objects.
4. Check the filters and check that they are clean.
5. Make sure that the fan impellers can move freely.
6. Ensure that the fuses are properly sized.
7. Electrically connect the dehumidifier to the electricity grid through the general switch and switch the
main switch ON and check for the voltage at the terminal L, N or L1, L2, L3 of the dehumidifier.
8. Start the dehumidifier for 3-4- sec with the operating mode selector in position MAN. In this time,
verify the correct rotation of the rotor. Turn off the dehumidifier with the operating mode selector
in 0 and check the direction of rotation of the fan impellers.
9. Install the panels, ensuring the seals are all in place.
10. The dehumidifier is ready to be used.
11. Start the dehumidifier and control the flow rate of the process and reactivation air. Check the flow
rates on their respective sides of the air delivery. If it is requested, adjust the air flow through a
damper installed on the flow of dry and moist air, or act on the adjustment of the frequency
converter.
12. If it is requested, verify the performance of the dehumidifier by measuring the quality of the dry air
produced on the output of the dehumidifier and compare the values with ones reported on p. 23.

Pagina 15 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Maintenance
Safety
CAUTION! The installation, adjustment, maintenance and any repairs must be carried out
by qualified personnel informed of the risks related to the operations of equipment supplied
from high voltage and high temperature.
CAUTION! The power supply is constantly present in the switch for the unit. Risk of electric
shock.
CAUTION! After a power failure the dehumidifier may restart automatically. Turn off the
main switch and always padlocked supply before performing any maintenance work.
PLEASE NOTE! For any maintenance or repair:
Wait 15 minutes after turning off the dryer before opening any service panel, in order to
allow for the cooling of the reactivation coil.
Electrically disconnect the dehumidifier via the main switch.
Disconnect the power plug
The maintenance intervals depend on the environment which the dehumidifier is installed in. The
frequency of these intervals may differ from one installation to another. Improper maintenance can
result in decreased performance.
Filters
The dehumidifier is equipped with two separate filters, one for the process air and one for the
reactivation air. The filters are placed on the inputs airflows of the dehumidifier. Cleaning or filter
replacement intervals will be determined by the amount of dust and air particles where you installed the
dehumidifier.
The filters should be checked at least once a month.
The unit can be equipped with the differential pressure gauges to check the pressure drop through the
filters. Do not leave the dehumidifier in operation without the filters: the rotor could be ruined.
Rotor
The rotor doesn’t need maintenance. However you may need to clean it very delicately with compressed
air. If it is very dirty, the rotor can be washed with water but before you do this, contact your local
distributor because it is not a routine operation. Check once a year the bearings and the surface of the
rotor.
Electric engines
The electric engines are equipped with ball bearings. Maintenance operations of the bearings aren’t
necessary. Check the engine and any noise once a year.

Pagina 16 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Heating coil
Requires no maintenance. Check at least twice a year for any possible mechanical damage and clean the
finned pack, controlling that the air flow is not obstructed by dirt or other material
Transmission belt of the rotor
Check at regular intervals the correct belt tension. It is kept under tension by the tensioning device and
requires no adjustments during normal operation.
Seals
Check seals regularly for any damage or dust.
Overall summary service intervals
Filters
Efficiency of the
rotor
Engines
Belt of the rotor
Coil
Seal
When necessary
√
Every 6 months
√
√
√
Every 12 months
√
√
NOTE! Always contact TFT for service and repairs. Operational failures can occur if machine
maintenance is carried out so insufficient, inadequate or incorrect.
NOTE! The inspection of installation/start-up performed by TFT is required to validate the
full warranty.
Inspection
During installation or when you need to work on the unit, you must strictly follow the rules reported on
this manual, follow the instructions on the unit and take any necessary precautions. Failure to follow the
instructions set can cause dangerous situations. After receiving the unit, verify the completeness of the
dryer: the unit left the factory in perfect condition; any damage must be immediately reported to the
carrier and recorded on the Delivery Note before signing it. The Company must be informed the extent
of the damage within 8 days. The Customer must prepare a written statement of any severe damage.
Before accepting delivery, check:
•that the machine has not been damaged during transport;
•that the machine is the same as specified in the transport document
In case of damage or abnormalities:
•note immediately damage on the delivery page;
•inform the supplier of the extent of the damage, within 8 days of receipt. Reports after this
deadline are not valid ;
•in the event of substantial damage prepare a written statement.

Pagina 17 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Storage
If you need to store the unit, leave it packed in a closed place. If for some reason the unit was already
unpacked follow these guidelines to prevent damage, corrosion and/or deterioration:
Make sure that all openings are securely closed or sealed;
To clean the unit, never use steam or other cleaning agents that could damage it;
Take away and leave to the site manager any keys providing access to the control panel.
Unpacking
The packaging may be dangerous for operators.
It is advisable to leave the unit packed during handling and unpacking only at installation. The packaging
unit has to be removed with care to avoid causing damage to the machine. The materials of the packaging
may be of a different nature (wood, cardboard, nylon etc.)..
Packaging materials should be stored separately and delivered for disposal or possible
recycling in order to reduce any impact on the environment.

Pagina 18 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Lifting and handling
When unloading the unit, it is highly recommended to avoid abrupt or violent movements to protect the
inside. The units can be moved by forklift truck or an overhead crane, being careful not to damage the
lateral panels and the cover. In the case of handling by forklift truck, put a spacer between the security
structure of the unit and the forks of the lift, to avoid damaging to the panels. In the case of handling
with a crane, we recommend using an adequate sling as a precaution, to prevent damage to the structure
and internal components. The unit must always be kept horizontal during these operations.
CAUTION! The dehumidifier weights over 100kg. To avoid personal injury or unit, always
use approved equipment.

Pagina 19 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Troubleshooting
Sympton
Possible causes
How to act
Reducing dehumidification
capacity
clogged filters
obstructed steam coil
steam valve doesn’t open
lack of steam flow
reduced air flow rates
the rotor is stationary
internal air leaks
insufficient reactivation air
air leaks
clean or replace the filters
check the reactivation coil
verify the correct operation of the valve
check the operating pressure of the steam, the
adduction valves, the condensate drain
check the dampers
check the belt tension
check the seals
check the reactivation coil
check the seals and the panels
Burned main fuses
malfunctioning of fans
airflow is too high
the rotor is stationary
malfunction of reactivation coil
check fans and motors
check the flow rates and the dampers
check the engine and the belt
check the reactivation coil
The dehumidifier will not start
control circuit
control signal
the power supply phases
fuses for control malfunction
check the fuses
check the external signal to start-stop
check the main fuses and the phase sequence
check the electrical components
The rotor is stationary
slippage of the belt
broken belt
off-axis rotor
malfunction of the gear motor
check tension
replace the belt
check the position of the rotor on the central
support
replace the gear motor
Low process or reactivation airflow
clogged filers
malfunctioning fans
phases of electrical power
the ducts are blocked
clean or replace the filters
check the fan motors and impellers
check the main fuses and the phase sequence
control dampers and pipelines

Pagina 20 di 36
AD800E-STD.EN-06 - Subject to change without notice TFT DryAir
Technical data
Characteristics AD800E
Process air flow
800 m3/h
Static pressure
150 Pascal
Reactivation air flow
250 m3/h
Static pressure
150 Pascal
Dehumidification capacity: @ 20°C ÷ 60% RH
4,4 Kg/h
Maximum input power
6,9 kW
Power supply Volt/Ph/Hz
400/3/50
Auxiliary power
24 V
Connection Outlet Process Air
= 200 mm
Connection Inlet Process Air
= 250 mm
Connection Outlet Wet Air
= 160 mm
Connection Inlet Reactivation Air
= 160 mm
Weight
145 kg
Total sound pressure (*):
72 dB (A)
(*) Sound pressure level calculated in free field, 10 meters from the unit, directional factor Q = 2 according to ISO 9614
Note:
For performance to different conditions - contact TFT srl for selection
Dimensions
PA = Inlet process air - DA = Outlet dry air - WA = Outlet wet air - RA = Inlet reactivation air