fisair DFRB-060-E Installation guide

Air Humidity ControlAir Humidity Control
Ciudad de Frías, 33, P. I. Camino de Getafe
28021 Madrid
Tel: [phone] - Fax: [phone]
e-mail: [email protected]
L’Energía, 20 P. I. Famades
08940 Cornellá de Llobregat (Barcelona)
Tel: [phone] - Fax: [phone]
e-mail: [email protected]
www.tecniseco.es
Installation, Operation and Maintenance Manual
AIR DEHUMIDIFIER DESICCANT ROTOR TYPE
MODEL DFRB-060-E
SERIAL Nº: 1113348
FISAIR, S.L.
Uranio,20 - P.I. AIMAYR
28330 San Martin de la Vega
MADRID (SPAIN)
[phone]- [phone]
e-mail : [e-mail]
www.fisair.com
DISTRIBUTOR :
According to the current European Union Rules on Machinery Safety, the reading
of these instructions is Imperative before installing the unit.

Installation, Operation and Maintenance Manual
Desiccant Rotor Type Air Dehumidifiers DFRB series
F-2833 - 1 - Technical Data Subject to alterations
INDEX
1. Introduction ....................................................................................................................2
1.1 Operating instructions....................................................................................................... 2
1.2 Typographic distinctions .................................................................................................... 2
2. Safety notes ....................................................................................................................2
2.1 General............................................................................................................................ 2
2.2 Operational safety notes.................................................................................................... 2
3. Transport ........................................................................................................................ 3
3.1 General............................................................................................................................ 3
3.2 Packing ............................................................................................................................ 3
3.3 Interim storage................................................................................................................. 3
3.4 Check for complete and correct delivery of goods................................................................ 3
4. General description ........................................................................................................4
4.1 Background ...................................................................................................................... 4
4.2 The desiccant wheel. Operating principle whit integral heat recovery .................................... 4
4.3 Dehumidifier main components identification...................................................................... 5
4.4 The PTC heater ................................................................................................................ 6
4.5 Regulation and control ...................................................................................................... 6
4.6 Options and ancillary components...................................................................................... 7
5. Installation ..................................................................................................................... 7
5.1 Location of the unit........................................................................................................... 7
5.2 Service Areas ................................................................................................................... 7
5.3 Air duct connections.......................................................................................................... 8
5.4 Electric mains connections................................................................................................. 9
5.5 Control equipment locations and connections...................................................................... 9
6. Start up ........................................................................................................................... 9
6.1 Unit start up ..................................................................................................................... 9
6.2 Stopping the unit.............................................................................................................. 9
7. Maintenance .................................................................................................................10
7.1 Preventative maintenance ............................................................................................... 10
7.2 Corrective maintenance................................................................................................... 10
7.3 Desiccant wheel service................................................................................................... 10
8. Fault finding..................................................................................................................11
9. Overall dimensions.......................................................................................................12
10. General technical data sheet......................................................................................13
Addenda
A Delivered unit technical data sheet
B Wiring Diagram
C Spare Parts List

F-2833 - 2 - Technical Data Subject to alterations
1. Introduction.
Dear customer,
The FISAIR dehumidifier is our answer to today's
technical requirements. It satisfies them by means of its
operational safety, its operational comfort and its
economic efficiency.
To be sure of operating your FISAIR
dehumidifier efficiently please read these
Operation and Maintenance Instructions.
Use the steam humidifier only in proper and safe
conditions, paying attention to all notes in these
instructions.
If you have any questions...please contact us:
Fisair S.L.
Phone [phone]
Fax [phone]
or your local dealer
1.1 Operating instructions.
The correct use of the air dehumidifier also includes
adherence to our installation, dismantling, refitting,
commissioning, operation and maintenance
instructions as well as taking correct disposal steps.
Only qualified and authorised personnel may operate
the unit. Persons transporting or working on the unit,
must have read and understood the corresponding
parts of the Operation and Maintenance Instructions
and specially the chapter “Safety notes“. Additionally,
operating personnel must be informed of any possible
dangers. You should place a copy of the Operation and
Maintenance Instruction at the unit's operational
location (or near the unit).
1.2 Typographic distinctions.
Enumerationwithprecedingheading:General
enumeration.
» Enumeration with preceding double chevron: Work
or maintenance steps that must be followed
sequentially.
Sequential step to be checked.
2. Safety notes.
2.1 General.
These safety notes are required by law. They are
for your protection and to prevent accidents.
Warning notes and safety symbols:
The following safety symbols shown in the text will warn
about dangers and danger sources. Get familiar with
these symbols.
Attention: Not observing this warning can lead
to injury or danger to your life and/or damage to
the unit.
Attention, Voltage: Dangerous electrical
current. Not observing this warning can lead to
injury or danger to your life.
Note: Materials/operational equipment; must be
handled and/or disposed of according to the law.
Note: Further explanation or cross-references to
other sections of the text in the Operation and
Maintenance Instructions.
2.2 Operational safety notes.
!In General:
Observe all safety and warning notices.
If there should be malfunctions, shut down the unit
immediately and secure against being restarted. Faults
should be rectified immediately.
During repair work, guarantee operational safety of the
unit by using qualified personnel.
Only use original FISAIR spare-parts.
For the effective operation of this unit refer to any
national regulations restricting or governing its use.
!Accident prevention regulations:
Observe the accident prevention regulations:
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Installation, Operation and Maintenance Manual
Desiccant Rotor Type Air Dehumidifiers DFRB series

F-2833 - 3 - Technical Data Subject to alterations
"Electrical Installation and Electrical Equipment" or
equivalent national codes. In this way you can prevent
injury to yourself or others.
!Operation of the unit.
Do not impair the safety of the unit.
Periodically check all protection and warning devices for
proper functioning.
Safety equipment is not to be removed or put out of
operation.
!Installation, dismantling, maintenance
and repair of the Unit.
Turn off power, when doing maintenance work or
repairs to the unit.
Extensions to the unit or installation of additional
equipment is only allowed after obtaining written
approval from the manufacturer.
!Electrical parts.
Work on electrical parts must be carried out by qualified
electricians.
Turn off the power and secure against restart when
working on electrical parts.
Immediately turn the unit off when faults occur in the
electrical energy supply.
Only use original type fuses of correct rating.
Make periodical checks of the electrical equipment.
Defects, like loose connections or burned cables must
be repaired immediately.
Test all inst alled protect iv e devices aft er i nstallation o r
repairs (e.g. grounding).
3. Transport.
3.1 General.
Note: Transport the air dehumidifier
carefully. Prevent damage from careless
loading and unloading and avoid the use of
unnecessary force.
3.2 Packing.
Note: Observe the pictograms displayed on the
package.
3.3 Interim storage.
During storage, keep the unit dry and protected from
frost.
3.4 Check for complete and correct
delivery of goods.
Upon receipt of the unit, make sure that:
!Type and serial number on the name plate
correspond to the order and supply information,
!Equipment is complete and in perfect condition.
Note: Immediately file a written claim with your
shipping agent in case of transport damage or
missing parts.
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Installation, Operation and Maintenance Manual
Desiccant Rotor Type Air Dehumidifiers DFRB series

F-2833 - 4 - Technical Data Subject to alterations
4. General description.
4.1 Background.
Modern standards concerning human comfort and the
environmental requirements for manufacturing,
storage & preservation of products and materials, make
increasing demands on the control of moisture content
in the working environment.
Where the natural or treated environment have an
ambient condition holding more water vapour than the
specified or desirable conditions, it is necessary to
integrate equipment which can reduce humidity to the
desired level.
FISAIR ROTARY DESICCANT DEHUMIDIFIER
provides the solution
The FISAIR dehumidifier is simple to install, reliable in
operation and will provide long lasting humidity control
at a reasonable running cost.
4.2 The desiccant wheel. Operating
principle with integral heat recovery
FISAIR dehumidifiers operate on the adsorption
property of a desiccant synthesised activated silica gel
manufactured into a cylindrical wheel shape with
multiple axial channels.
In DFRB series the face of the cylinder is divided in three
zones:
!The Process Air Zone occupies 210 degrees
approximately of the circle's face. In this section
the desiccant removes moisture from the process
air passing through the rotating desiccant
cylinder.
!The Reactivation Air Zone occupies 90
degrees approximately of the circle's face. In this
section the reactivation air passes counterflow,
previously heated to a temperature enough to
open the desiccant pores, removing moisture
from the desiccant.
!The Heat Recovery Zone occupies resting 60
degrees of the circle's face. In this section the
reactivation air, before reaching the air heater,
passes through the desiccant wheel in the
Process Air direction, cooling down the desiccant
material while reactivation air is pre-heated
causing the heater consumption to decrease.
(*)
(*) For DFRB-015-E model the face of the cylinder have
other divisions:
!Process air zone: 180º.
!Reactivation air zone: 90º.
!Heat recovery zone: 90º.
A gear motor via a pulley and driving belt rotates the
cylinder at a low speed to provide a continuous and
uniform operation, with a low energy consumption.
Perimetric and radial air seals separate air circuits and
prevent air loss to ensure maximum performance.
DRIVING MOTOR
DRY AIR
WET AIR HEATER
PROCESS
AIR INLET
REAC TIVATION
AIR
Drying
(210 º)
Reactivation
(90 º)
Heat
Recovery
60 º
Installation, Operation and Maintenance Manual
Desiccant Rotor Type Air Dehumidifiers DFRB series

F-2833 - 5 - Technical Data Subject to alterations
4.3 Dehumidifier main components identification.
connections, filtered and impelled against one face of the
desiccant rotor. By means of the opportune partitions of
the frontal area of the desiccant rotor, part of the impelled
air suffers a direction change of 180 degrees, passes
through the reactivation air heater, and then crosses
counterflow the desiccant rotor which is this way
reactivated for a new cycle. Dry air and wet air outlets are
made also with circular standard connections.
1
6
5
1 2 37463
15
4
7
DRY
AIR
WET
AIR
AN D R EAC TIVATIO N
AIR
PROCESS
WET
AIR
DRY
AIR
PROCESS AND
REACTIVATION AIR
3
1
2
5
4
6
7
OUTER FRAME
DESICCANT ROTOR
ROTOR DRIVING MOTOR
ELECTRIC CABINET
FAN
HEATER
AIR FILTER
REACTIVATIO N AIR
The above schematic drawing shows the FISAIR series
DFRB dehumidifiers main components disposition as well
as the air flow diagrams.
These models have relative low air flow and they
incorporate a direct driven single ear centrifugal fan that
moves the process/dry air as well as the reactivation/wet
air. The air is aspired by the fan through circular
Installation, Operation and Maintenance Manual
Desiccant Rotor Type Air Dehumidifiers DFRB series

F-2833 - 6 - Technical Data Subject to alterations
The unit electrical components are disposed into an
enclosure with a folding cover located at the upper right
front of the unit that can be accessed loosening the
screws. The following items can be found in the front:
!One ammeter to show the reactivation heater
current.
!One on/off switch with lighting indicator.
!Two cable conduits for the electric mains and the
hygrostat connection cables and/or remote on/off.
!In 3-phase models, an isolating switch.
The driving motor, fan and filter are easily accessible by
dismounting the upper cover of the unit, fixed by T-
knob screws, that can be tighten or loosen by hand.
The air heater is located at the bottom central part of
the unit. This can be accessed dismounting the front
protection cover which acts also as reactivation air
deflector.
4.4 The PTC heater.
FISAIR DFRB series dehumidifiers use a PTC (Positive
Temperature Coefficient) heater to heat the
reactivation air with aluminium fins instead of a
conventional electric resistance heater.
PTC heater is a semiconductor with variable electric
resistance depending on its surface temperature. It is a
ceramic polycrystalline compound, basically Barium
Titannate with self temperature limitation. When
connected to mains the semiconductor surface reaches
a maximum temperature of 230º C (aprox.), absorbing
a variable electric power depending on the air flow that
crosses through it. Typical operating diagrams of these
heaters are:
Resistance-Temperature Diagram
Power - Air Flow Diagram
PTC heater surface temperature self limitation effect
provides the following advantages:
» Since the manufacture materials are designed to
support the highest surface temperature, fire risk is
limited even without air flow.
» The harmful atmospheric dust combustion doesn't
happen.
» A limiting thermostat to protect heater is not
necessary.
» Since dehumidification capacity is proportional to
reactivation power and through the PTC heater this is
proportional to the heated air flow, its reduction will
proportionally decrease the unit capacity. This effect is
inmediately and easily noticed at the integral ammeter
of the unit when the wet air discharge duct is strangled
or obstructed.
4.5 Regulation and control.
As a consequence of the PTC heater operation explained
above, dehumidifier DFRB drying capacity can be
regulated in two different ways:
!On-Off Control: When you use the hygrostat
terminals marked as H1 on wiring diagram, if the circuit
is opened the PTC heater is switched off. The air on the
unit keeps on blowing but it is not dehumidified.
When using connection marked as H2 on wiring
diagram, if the circuit is opened the unit is completely
switched off.
Note: The hygrostat must have a 10 A electric
cut-off resistive capacity. Otherwise an auxiliary
relay must be installed.
Resistance
Temperatur e
Power
Air Flow
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Installation, Operation and Maintenance Manual
Desiccant Rotor Type Air Dehumidifiers DFRB series

F-2833 - 7 - Technical Data Subject to alterations
!Proportional Control.- Other way to reduce the air
heater power consumption and consequently the
drying capacity of the unit, is to install a regulation
damper in the wet air discharge duct. If the damper is
driven by a proportional humidity controller, the
dehumidifier capacity will be proportionally controlled
in a modular way.
4.6 Options and ancillary components.
On demand, DFRB series of FISAIR dehumidifiers can
be provided with:
!Control Hygrostat On-Off.
!Runtime Counter.
!Manually or motor driven air flow regulation
dampers.
!Wall mounting or self carrier base.
5. Installation.
5.1 Location of the unit.
Before installing FISAIR dehumidifiers the following
points should be considered
» Ifthedehumidifierhastobestoredforasignificant
period prior to installation it should be protected
from external damage and dust and construction
material.
Note: In the case of outdoor storage,
weatherproof covers should be employed.
»The FISAIR DFRB dehumidifier is designed for
internal installation, for outdoor use please apply to
your local representative for special construction
details.
»Oncefinallocationisdefinedensurethatthereis
enough space for servicing to be carried out. Take
care to ensure that ducting connections are made
without stressing the unit.
5.2 Service Areas.
Using the attached dimensioned drawings of the relevant
model, consider periodically:
»Airfiltersmustbecleanedorchanged.
»Thedesiccantwheelfacesshouldbeinspectedand
cleaned and the air seals adjusted as necessary.
»Drivingbeltshouldbecheckedforfatigueandits
tightness checked.
» Check the operation of fans and motors and the
reactivation heater. In case of failure, repair or
replace.
»Checkthecomponentsinthecontrolbox,serviceor
change as necessary.
Note: To service/replace the main inside
components, dismount the top cover and sided
plates. This will provide enough space to service
everything.
Pay attention to avoid that ducting connections and unit
location do not prevent servicing.
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Installation, Operation and Maintenance Manual
Desiccant Rotor Type Air Dehumidifiers DFRB series
F

F-2833 - 8 - Technical Data Subject to alterations
Different operation options of the unit as 'All Fresh Air'
or 'Partial/Total Recirculation' systems and the
possibility of mounting the unit inside or outside of the
site which humidity is being controlled, determine the
use of one of the above duct mounting diagrams:
!In the diagrams are indicated two regulation
dampers located at wet and dry air ducts used
to adjust each circuit air flow and consequently
the dehumidifier capacity.
Additionally, in the Partial/Total Recirculation diagrams
you can see a third damper located in one of the process
air inlets that can be used to over pressure the controlled
site, minimising air infiltration from adjacent rooms.
The static pressure available for ducts can be found in the
unit data-sheet.
Also, the wet air duct must facilitate the draining of the
condensing water produced when this air becomes cooler
5.3 Air duct connections.
WET AIR (ALWAYS SLOPED DESCENDING)
DRY AIR
PROCESS/REACTIVATION AIR
3
2
1b1a
OUTER MOUNTINGIN N E R M O U N T IN G
PARTIAL/TOTAL RECIRCULATION
OUTER MOUNTINGIN N E R M O U N T IN G
ALL FR ES H AIR
2
DFRB
1a
1b
3
2
DFRB
1a
3
1b
2
1a
3 1b
DFRB
CONTROLLED
SITE
DFRB 23
1b
1a
CONTROLLED
SITE
CONTROLLED
SITE
CONTROLLED
SITE
Installation, Operation and Maintenance Manual
Desiccant Rotor Type Air Dehumidifiers DFRB series

F-2833 - 9 - Technical Data Subject to alterations
due to heat transmission. To achieve this the duct must
slope downstream and the wet air outlet must be
placed as far as possible from the process air intakes,
to avoid losses of performance.
5.4 Electric mains connections.
Attention: The dehumidifier works with
medium electrical power and voltage and its
connection to the mains must be done by
qualified personnel and according to the
applicable local electrical regulations.
The unit must be connected to the electrical network of
the installation through a short circuiting and ground
leakage protection line, with wires section/sensitivity as
corresponds to the dehumidifier power.
5.5 Control equipment locations and
connections.
The location and mounting instruction for the control
equipment are normally specified by the corresponding
supplier.
In case of On-Off Control using a Hygrostat you can
choose between the complete unit switch off or the
reactivation air heater switch off, as described before.
6. Start up.
6.1 Unit start up.
Once the ductwork has been completed and the
equipment is connected to the electrical mains, as
well as to the control equipment, proceed in this way:
Attention: Before using the control panel,
verify that all mechanical elements can work
freely and the unit has no installation d e b r i s
inside.
»Checkthattheairflowregulationdampers,ifexist,are
opened.
»Checkthathygrostatsetpoint-ifexists-isatleast10-
15% lower than environmental humidity.
»Checkthatelectricmainsisprotectedwithafuse
adequate to the unit power.
»Switchontheunit.Integralpilotmustlight.Fanstarts
operation and the ammeter reading reaches the upper
limit due to the PTC heater consumption. PTC heater,
like motors, have a consumption peak on starting 2 or
3 times the normal consumption.
»Waitafewminutesallowingthedesiccantwheelto
rotate several times until drying and regeneration
processes are stabilized. Check that dry air
temperature is lightly higher than the process air
temperature, and the wet air temperature is higher
than the dry air temperature. Adjust air flows to
specific requirements of each application.
»Measureforeseenthermohygrometricparameters.
To reduce the u nit capacity yo u ha ve to strangl e th e
wet air stream, this automatically reduces
consumption indicated by the ammeter.
6.2 Stopping the unit.
The equipment can be stopped manually or
automatically.
Manual mode:
»Justoperatethecontrolswitchtoits"OFF"position.
Automatic mode:
»Theunitwillbeshut-offwhenjumperH2,showninthe
wiring diagram, is open (this stops the unit totally). In
case of opening jumper H1, the reactivation air heater
is shut-off while the two motors keep on running.
Installation, Operation and Maintenance Manual
Desiccant Rotor Type Air Dehumidifiers DFRB series