Carrier 39CZ Manual

INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS
Translation of the original document
Air handling unit
39CZ

2

1 - INTRODUCTION............................................................................................................................................................................4
1.1 - General safety instructions........................................................................................................................................................4
2 - DELIVERY AND HANDLING.........................................................................................................................................................5
2.1 - Receiving and storing the unit...................................................................................................................................................5
2.2 - Location.....................................................................................................................................................................................5
2.3 - Setup.........................................................................................................................................................................................6
3 - INSTALLATION .............................................................................................................................................................................7
3.1 - Special recommendations.........................................................................................................................................................7
3.2 - Assembly - Fitting......................................................................................................................................................................7
3.3 - Filtration...................................................................................................................................................................................12
3.4 - Water and direct expansion coil ..............................................................................................................................................12
3.5 - Electric heaters........................................................................................................................................................................14
3.6 - Control system ........................................................................................................................................................................15
3.7 - Fan motor assembly................................................................................................................................................................15
4 - SYSTEM START-UP....................................................................................................................................................................17
4.1 - Connecting the electric motor..................................................................................................................................................17
4.2 - Blade damper..........................................................................................................................................................................18
4.3 - Electric heater .........................................................................................................................................................................18
4.4 - Water humidier ......................................................................................................................................................................18
5 - MAINTENANCE...........................................................................................................................................................................19
5.1 - Casing .....................................................................................................................................................................................19
5.2 - Dampers..................................................................................................................................................................................19
5.3 - Air lters...................................................................................................................................................................................19
5.4 - Humidiers ..............................................................................................................................................................................20
5.5 - Fan motor assembly................................................................................................................................................................21
5.6 - Sound attenuator.....................................................................................................................................................................21
5.7 - Heat recovery units .................................................................................................................................................................21
5.8 - Preventive maintenance..........................................................................................................................................................22
5.9 - Cleaning the units....................................................................................................................................................................22
6 - WARRANTIES .............................................................................................................................................................................23
6.1 - Duration of warranty on coatings applied to outdoor air handling units ..................................................................................23
6.2 - Duration of the air handling unit warranty................................................................................................................................23
7 - SPECIAL INFORMATION FOR ATEX AREAS ...........................................................................................................................24
7.1 - General information.................................................................................................................................................................24
7.2 - Marking....................................................................................................................................................................................24
7.3 - System start-up, maintenance.................................................................................................................................................24
7.4 - Using tools in an explosive atmosphere..................................................................................................................................25
8 - MEANING OF THE PICTOGRAMS.............................................................................................................................................26
9 - REGULATIONS ...........................................................................................................................................................................27
CONTENTS
The illustrations in this document are for illustrative purposes only and not part of any o󰀨er for sale or contract. The manufacturer reserves the right to change the design
at any time without notice.
3

1 - INTRODUCTION
This manual must be read before placing, installing or servicing the air handling unit.
Failure to follow the instructions in this manual could damage the air handling unit and will void its warranty.
39CZ air handling units are intended solely for the purpose of handling air. No other uses (storage, etc.) are allowed. They should
never be used for any other purpose (storage, support, etc.).
1.1 - General safety instructions
The following must be performed before any work on the air handling unit :
- The power must be switched o󰀨 (proximity switch)
- The fan must be stopped (WARNING: it may take several minutes to stop completely)
- Electrical equipment must be switched o󰀨 (electric heater, humidier, puriers, etc.)
- Work must be carried out by an accredited technician.
- PPE (Personal Protective Equipment) must be used for all work.
4

2 - DELIVERY AND HANDLING
2.1 - Receiving and storing the unit
The condition of the unit must be inspected upon receiving it.
In case of damage, specify this in full on the delivery note,
indicating the type of problem (upper panel dented, coil damaged,
etc.).
Conrm your observations concerning the damage with the carrier
by registered letter within 48 hours of delivery and send a copy
to yourCARRIERrepresentative.
NB: terms such as "pending unwrapping" and "unit damaged
but packaging in good condition" are not admissible by
insurance companies.
For all other problems, please contact your CARRIER
representative for further information.
The unit must be stored in its packing and sheltered from weather.
To facilitate the assembly of multisplit units, their components
must be kept in the relevant groups. Refer to the dimensional
drawings and identication labels placed on each section (see
below).
39 CZ ST 75
BC
D
E
FG
H
IJ
K
B
Order number. Use in all correspondence.
C
Section number
A1, A2, ….A9: multi-section unit.
A second unit may bear the markings B1, B2, ….B9.
The numbers 1, 2 and 3 do not necessarily indicate the order of assembly
(refer to the dimensional drawing).
A9, B9…: markings for all accessories: assembly, roofs, canopies, gaskets,
fastenings, etc. of the corresponding unit.
D
CARRIER internal production order.
E
CARRIER internal coding.
F
Your name or company.
G
Internal pre-shipping check.
H
Your reference (if applicable).
I
Weight of corresponding block.
J
Block year of manufacture.
K
Centre of gravity to facilitate positioning of the lifting beam.
2.2 - Location
The air handling units are relatively large. Extra attention is
required when choosing where to place them.
As is generally the case with boilers and refrigeration units, we
recommend installing the air handling units in machine rooms that
are su󰀩ciently insulated from adjoining rooms.
It is also important to leave su󰀩cient space around the units to
allow access to the various components: bearings, belts, motors,
lters, coils, etc. Refer to the diagram below to ensure trouble-free
maintenance.
IMPORTANT: a clearance of 600 mm is recommended for
assembling the sections
5

2.3 - Setup
Handle the boxes carefully. Lift them using a lifting beam suitable for the size of the unit (refer to the diagrams below), two steel tubes
(minimum diameter 1": 33.7 mm external; maximum 1¼": 42.7 mm external) and straps, as per the handling instructions (minimum
angle of 60°).
Important: Make sure that the spreader beam is suciently large so that the straps do not press against the unit and the
steel tubes are immobilised while moving the unit.
B
B
B
Limiting sideways movement
If using a spreader beam is not possible, the unit may be lifted using a forklift truck provided care is taken to avoid denting the bottom
panel (use su󰀩ciently long forks).
Follow the applicable handling rules.
2 - DELIVERY AND HANDLING
6

3 - INSTALLATION
The equipment must be installed in accordance with the legislation applicable to the installation site.
3.1 - Special recommendations
- Connections must not place mechanical stresses on the unit.
- Air and hydraulic pipes must be secured using supports.
- Keep all inspection doors closed while the unit is operating.
- A safety device in case of insu󰀩cient air ow must be integrated in the fan control.
- For outdoor installations, units must be installed in accordance with best industry practice to withstand the weather conditions in
the installation location, (risk of snow: height of installation from the ground, risk of wind: adapted mountings, etc.).
Flexible sleeve
Transport legs
IMPORTANT: Make sure to ground all electric components.
NOTE: For large units (plate/wheel recovery units, mixing units, etc.), the transport brackets located at the corners must be
removed upon delivery.
3.2 - Assembly - Fitting
The damper sleeve and ducts are connected to the AHU using 5.53 sheet metal screws.
IMPORTANT: The box(es) making up the air handling unit must be installed on a at, sturdy surface. To ensure a tight seal
between joined sections, they must be shimmed and levelled to compensate for any unevenness of the mounting surface.
Spirit level
B
CD
F
E
B
Connection components
C
Use securing devices at the ends
D
Fit anti-vibration mounts:
Insulating foam block + intermediate plates between frames
E
Always place the unit(s) on a counterframe when adding anti-vibration
mounts (frame and mounts to be provided by customer)
F
Intermediate mounts prohibited (deformation of the lower block)
7

■Assembling the two blocks
- Check the atness and levelness of the mounting surface.
- Fit the gasket on the sealing face between the blocks (g.A).
- Using the appropriate handling equipment, place the two sections to be joined as close to each other as possible.
- The blocks are assembled on the same level by connecting the frames or the feet using connection components (g.B). Secure
outdoor units using a TH 8 x 70 screw, washers and nuts (g.C). A plate provides a seal between the two casings (tted with
mastic) (seeg.Dintheoutdoorassemblysection)
If assembling the sections vertically, the top section must not be mechanically fastened to the bottom section. Its weight will keep it in
place.
IMPORTANT: Before tightening the brackets, seal the sections with a gasket or caulking.
B
Fig. A
Fig. B
Fig. C
C
B
Attachment screw
C
Gasket or mastic
Fastening clamps are supplied for a tighter t between sections
on size 150 and higher air handling units. They may be placed on
the sides or tops of each section.
- Trace the mounting holes (centre distance: 38 mm) and drill
a diameter 4 hole.
- Attach the clamps with the screws supplied.
- Join and tighten the clamps together with the two 6 x 60 mm
screws, washers and nuts.
Comment: these clamps cannot be used on access panels.
IMPORTANT: Do not use the fastening clamps to compensate
for misaligned sections.
15 x 8 mm
gasket
2 cleats
1 M6x60
0.250
EXT. CONN
3 - INSTALLATION
8

Where possible (door nearby, footprint, etc.) the clamps may be tightened on the inside with TH 6 x 60 bolts.
Sizes 25 to 75 Sizes 100 to 600
An optional decorative trim is available for bottom 39CZ CL units only.
■Dual-owassemblywithstackedcasings(A)and(B)
The unit can be assembled in one of two of ways depending on its size:
25 to 75 units: a󰀩x the feet of block B to the intermediate panel
C using two TH 6x20 screws. Holes are provided for this purpose.
C
100 to 600 units: a󰀩x the brackets to the feet of block B, and the mounts to the panel using the screws provided. Assemble using
two screws (6x120), washers and nuts.
B
Block
3 - INSTALLATION
9

■Assemblingstackedcasings(AandB)withathermalwheel
recuperator (C)
Fasten the feet on section B to the middle panel (1) with two TH
6 x 20 screws in the holes provided.
Holes are provided for this purpose.
■Assembling adjacent casings
The rst air stream (g.1) is installed in the same way as on
horizontal air handling units. (see block interconnection).
The second air stream is connected to the outside (Fig. 2) in the
same ways as the sections. The insides (inaccessible) are
connected from inside when possible and/or using the outer lugs
on the top of the box (impossible on outdoor handling units on
account of the roof).
■Ceiling installation
Suspended units must be placed on a metal section suspended
from the building structure. Each pair of feet must rest on a metal
section. Each pair of feet must rest on a metal section.
These sections are to be provided by the tter and must be cut
to suit the layout of the room and be su󰀩ciently rigid. The sections
should not block access to the drawers and doors on the unit.
Leave space for platform access on the connections side.
■Outdoor installation
Air handling units installed outdoors must be protected by a roof
(Fig. 1) or overhang (Fig. 2). These components are generally
delivered in kits and adapted to each conguration.
Overhang
■Fitting the roofs
A󰀩x the gasket
B along the length of the unit (50 x 20 foam
gasket).
Fit the roof panels along the entire length of the unit, placing a
foam seal (supplied by CARRIER) between each panel.
C
C
B
Assemble the panels as per the roof diagram and drawing
supplied with the unit
a M6 x 16 screw
b Sealing washer
c Gasket
Assemble the panels to side A of the unit as shown in the drawing
opposite:
Then assemble the panels to side B, pressing on the roof to create
the curve. Fasten the panels to the box.
a Sealing washer
b Self-tapping screw (supplied)
c Sealing rivet
In addition the rules mentioned on the previous pages, special
care must be taken with the hydraulic system (do not forget the
risk of freezing temperatures).
If the unit is tted with an external air intake, we recommend
protecting it from prevailing winds and any exhausted air or gases
(chimneys, roof extractors, etc.). Follow the requirements in
standard EN 13779.
If the unit is installed on a deck or patio with a top intake and/or
discharge, the unit must be placed above the roof or deck/patio.
Locations where ducts and pipes extend through the roof or deck/
patio must be completely watertight.
3 - INSTALLATION
10

■Counter frame sealing for outdoor installation
Caulk during assembly
■Fitting the canopies
Assemble the top panel (1) to its two side panels (2) and (3) with 6 mm screws, washers and nuts or rivets.
A󰀩x the sealing gasket (4) around the edge of the canopy and apply mastic if necessary.
Fit the screen and the canopy and a󰀩x the assembly to the unit using diameter 5.53 sheet metal screws and washers
The canopy is delivered in a kit. Drill
the necessary holes in the box during
assembly.
a Sealing rivet or M6 x 16 screw
b M6 sealing washer
c M6 plain washer
d M6 external tooth lock washer
e M6 nut
3 - INSTALLATION
11

■Mounting brackets
To guarantee a greater clearance height, t raised feet under the standard frame feet.
Extension leg (100 mm/200mm/300mm) Adjustable leg (option).
3.3 - Filtration
- G2 lters: the cell may be inserted in any direction regardless of the direction of air ow,
- G4 lters: the mesh holding the medium in place must face the discharge air side,
- HPS bag lters HPS (M5, M6, F7, F8, F9), high-e󰀩ciency and HPR lters: the cells on the frame side must face the incoming air,
- HEPA lters (E10, H14): refer to the instructions supplied with lters for information on tting and maintaining them,
- Carbon lters: refer to the instructions supplied with the lters.
G2 and G4 lters are supplied tted on the unit. Other lters are supplied in their packing.
BCCDE
B
G4 lter
C
HPS lter
D
HPR or carbon lter
E
HEPA lter
3.4 - Water and direct expansion coil
Do not remove the protective caps until you are ready to connect
the coils.
■Coil with water supply
IMPORTANT: Always use two spanners when connecting or
tightening the hydraulic couplings to avoid twisting the pipes
and applying stress on the welds. Check the tightness of the
connections before installing heat insulation or lling the
system with water.
If flanges are used, provide enough clearance for the frost
protection sensor drawer or the droplet separator drawer.
The anges should be o󰀨set.
■Supplying the coils
Warning: water + glycol = risk of burns and toxic if ingested
Refer to your dimensional drawing for the diameters of the
connections and their positions.
Check the connections for leaks after 24 hours.
3 - INSTALLATION
12

■Coil maintenance
- Clean air is essential to the e󰀩ciency of the unit. Use an air lter.
- The coil may be cleaned with compressed air. However, make sure particles are not blown into any other sections of the unit.
- If a glycol/water mix is used in water-cooled heat exchangers, check the glycol/water ratio.
- If the coil is extremely dirty, disassemble it and clean it with a high-pressure washer. Keep the lance perpendicular to the coil
surface.
Take the necessary steps to protect the coil from the risk of freezing temperatures.
■Heating coil
Check the operation of the frost protection thermostat (option) at the start of each winter.
If the outlet temperature on the frost protection coil is below 15°C, use a constant-volume control valve to prevent the frost protection
alarm being triggered and frost forming on the coil.
■Cooling coil
Clean and replace the cells on the droplet separators as often as necessary. Prime the siphon at commissioning or each time the unit
is stopped for extended periods. Keep the condensate pan and drain clean.
■Siphon (recommendations)
Install a drain and a bleed valve on the supply pipes in accordance with accepted industry practices.
Install a siphon and a vacuum breaker to discharge condensate from the cooling coils. Their height should be equal to twice the
negative pressure of the unit.
diagram 1
Handling units requiring more than one siphon:
Install siphons and vacuum breakers as shown in diagram 1.
3 - INSTALLATION
13

■Direct expansion coil
Installation must be performed by qualied personnel.
For coils containing "SPLIT SYSTEM" refrigerant, the unit must
not be stored near to a source of heat or in direct sunlight (increase
in refrigerant pressure).
■Droplet eliminator
They are placed downstream of the cooling coil. Clean them once
a year with suitable products to remove any deposits. Specially
designed products are available for this operation.
3.5 - Electric heaters
Electrical connection and control with the fan motor assembly:
Always follow general safety instructions and especially current
standards (e.g. NFC 15-100 on overcurrent and overvoltage
protection) when making electrical connections.
IMPORTANT: Always install an air flow pressure switch
(control lot) and program a fan delay time of several minutes.
IMPORTANT: Connect the electric heater with high-
temperature wires. Take into account the temperature inside
the electric heater when selecting these wires.
Example: for a 2.5 diameter, 50 m cable (4 conductors), the
following are available:
- 80°C high temperature cable: Max current: 45 A
- 120°C high temperature cable: Max current: 27 A
Connect these wires to the designated terminals and the terminals
on the manual and automatic reset thermostats (depending on
unit) inside the box.
The stages (power-connection terminals) are identied with labels
of the same colour.
Power
1 ph 2 ph 3 ph
If there are three stages, there will be three sets of these labels.
The connections must be made as per the schematic diagram
(example for connection of two heaters
■exemple :
12
FAN MOTOR ELECTRIC
HEATER
ELECTRIC
HEATER
Power circuit supply
Control circuit
Q Main disconnect switch QR2 Electric heater thermal cut-out BSC1 Electric heater safety thermostat
automatic reset
QV1
Fan motor thermal-magnetic circuit breaker KR2 Electric heater switch BSC2 Electric heater safety thermostat
manual reset
KV1 Fan motor switch R2 Electric heater BSC3 Electric heater safety thermostat
automatic reset
MV1 Fan motor QT1 Remote control thermal cut-out BSC4 Electric heater safety thermostat
manual reset
QR1 Electric heater thermal cut-out INT On/o󰀨 switch TH1 Room thermostat
KR1 Electric heater switch K1 Time-delay relay TH2 Room thermostat
R1 Electric heater PA ow rate controller
NB:Donotearththeelectricheater(class2insulation).Instead,makeaconnectiontothecasingascloseaspossibleto
the heater.
3 - INSTALLATION
14

Retighten the connections after 48 hours of operation.
A suitable air ow rate controller (pressure switch, switch indicator, etc.) must be placed in the circuit to shut o󰀨 power to the heaters
should an air ow fault occur.
CARRIER shall not be liable if this requirement is not followed.
IMPORTANT: Never operate the coil with the fan o.
For the variable-speed motors, the power dissipated by the coil must be proportional to the motor rotation speed and adjusted gradually.
For a two-speed motor, the control system is congured so that the reduction in the air ow results in a proportional reduction in the
heater power.
For example: 1500 / 750 rpm, coil capacity of 30 kW.
At low speed, the power dissipated by the heater must be reduced by 50% and not exceed 15 kW.
IMPORTANT: A number of factors can cause general overheating of the electrical elements, which can lead to the thermostats
being triggered:
Examples:
- Turning on the unit without the fan,
- Filter fouling,
- Reversed fan rotation,
- Faulty operation of the air dampers,
- Insu󰀩cient voltage to the fan motor assembly belt.
3.6 - Control system
If the air intake is tted with a motorised damper, the fan should not operate unless the opening limit switch is tripped.
If a two-speed motor is used, the shift from high to low speed should be timed to avoid a braking e󰀨ect.
3.7 - Fan motor assembly
The spring-mounted fan motor assemblies (39CZ ST, 39CZ CL ranges) are locked in place during shipment
by three fasteners placed on either side of the support frame.
IMPORTANT: Remove the shims after installing the unit.
The direction of rotation must match that indicated on the fan.
In most cases the drive is tted before leaving the factory. All that needs to be done is to retension the
belts after 24 hours of operation. The tension depends on the belt type, the power to be transmitted and
the rotation speed.
IMPORTANT: Overtensioning the belts will result in accelerated wear of the bearings. Undertensioning the belts will cause
them to slip and wear down.
Place two strips of opaque adhesive tape exactly 250 mm from each other.
Gradually tighten the belt in successive increments until the gap between the two adhesive tapes reaches:
B
B
an extension of 0.4% to 0.6%, (0.4% = 251mm and 0.6% = 251.5mm).
IMPORTANT: Do not use the existing marks on the belts as a reference.
Tension the belts as shown in the photos below:
If the drive and/or motor is to be delivered later, proceed as follows:
- Clean the shafts and keys,
- Select the corresponding pulley,
- Insert the pulleys or the bushes,
- Align the pulleys.
3 - INSTALLATION
15

■Aligning the pulleys
B By placing a ruler at against the pulley ange and adhering to the data below.
C For variable-diameter pulleys, align them along the centre line.
- Hold the pulleys in place with the appropriate tool,
α max < 0.5°
β max < 4 mm per metre of centre distance
Alignment axis
B
C
- Fit the belts,
- Tension the belts as instructed in the previous section.
IMPORTANT: If changes are made to the drive, make sure that it is compatible with the fan motor assembly, motor current
and the suspensions.
■Direction of rotation of the impellers
Centrifugal fan
Low pressure
Centrifugal fan
Moderate pressure
Plug fan
Seen from intake side
Option: device to measure and check the air ow. Used on centrifugal fans and plug fans.
3 - INSTALLATION
16

4 - SYSTEM START-UP
Keep all inspection doors closed while the unit is operating.
A safety device protecting against insu󰀩cient air ow must inserted in the fan control.
IMPORTANT: Connect all electric components to earth.
4.1 - Connecting the electric motor
The connection must be made by a qualied technician, as per the diagrams below and those included with the motor.
IMPORTANT: Before powering up the motor, test the insulation resistance. Failure to follow this recommendation will void
the motor warranty.
■Operating mode:
- Before carrying out any work, disconnect and uncouple the motor or the driven machine.
- Measure the motor's insulation resistance before starting it up, particularly if the windings may be wet.
• The insulation resistance, corrected to 25°C, must exceed the reference value (100 MΩ) (measured under 500 or 1000 V CC).
• The insulation resistance value is reduced by 50% if the room temperature increases by 20°C.
- Fit the motor casing and discharge the cables against the casing immediately after each measurement to prevent the risk of
electric shocks.
- If you do not obtain the reference resistance value, the windings are too wet. They must then be dried in an oven at a temperature
of 90°C for 12 to 16 hours, then at 105°C for 6 to 8 hours.
• During drying, remove the covers from the bleed holes and open the closure valves (if tted to the motor). Remember to close
them after drying. If the bleed caps are xed, it is recommended to remove the terminal box anges and covers for the drying
operation.
• Windings which have taken in sea water must normally be rewound.
IMPORTANT: The motors are equipped with a heat protection sensor which must be connected. Check the supply voltage,
the input current and the calibration of the protective devices.
IMPORTANT: For motors with a power of 5.5 kW or above, we recommend Y/∆ starting in order to limit the starting current
(Id/In) and reduce the wear on the drive.
■DualvoltagetypemotorwithYcoupling,∆(6terminals):
230/400 V motor
- 230 V supply voltage, connection (∆): diagram A.
- 400 V supply voltage: (Y) connection: diagram B.
400/690 V motor
- 400 V supply voltage, connection (∆): diagram A.
- 690 V AC supply voltage (for P>5.5 kW), connection (Y): diagram B.
■Dahlander dual-speed motor or motor with reversible poles, 6 terminals.
These diagrams apply to three-phase, 3000/1500 rpm and 1500/750 rpm motors.
Low
speed
(LS)
High
Speed
(HS)
LS and HS for “2” contacts
17

■Dual-speed motors: two separate windings, 2 x 3 terminals.
These diagrams apply to three-phase, 1500/1000 rpm motors.
Low
speed
(LS)
High
Speed
(HS)
LS and HS for “2” contacts
These wiring diagrams are inside each terminal box.
Retighten the connections after 48 hours of operation.
■Frequency inverters
Recommendations:
- The motor must be connected to the inverter using a
shielded cable;
- The sizing of the inverter depends on the distance
between the motor and the inverter;
- Before starting up the system, the upper frequency must
be limited to prevent the maximum speed of the rotating
parts from being exceeded or the motor from being
overloaded;
- Eliminate the frequencies producing resonances by
checking the operation of the fan one frequency at a
time.
- Fit Du/Dt filters on the inverter side for the 690V
networks.
4.2 - Bladedamper
Do not turn on the fan with the blades closed.
When the unit is shut down, ensure a time delay on the dampers
(or a leakage rate) equal to the fan's inertia time or the time
required for the heat to be evacuated from the electric heater.
4.3 - Electric heater
IMPORTANT: Never operate the coil with the fan o.
IMPORTANT: Always install a fan delay.
4.4 - Waterhumidier
Check the direction of rotation of the pump.
Refer to the documentation delivered with the pump.
4 - SYSTEM START-UP
18

5 - MAINTENANCE
5.1 - Casing
The boxes have smooth internal walls. The rate of cleaning will depend on the application and outdoor environment. Check the casing
at least once a year.
IMPORTANT: Do not clean the air handling unit with a high-pressure washer.
5.2 - Dampers
Periodically check the condition and operation of the dampers.
5.3 - Airlters
Filter fouling can be determined by testing the pressure drop.
Air handling units are tted with pressure tappings.
The various types of lters are shown in section 3.
■G2lter
The cells must be periodically vacuumed. To remove greasy dust, the media may be cleaned with warm water (50°C max.) and
detergent.
■G4lter
G4 cells are generally non-regenerative. They must therefore be replaced as often as necessary. During assembly, make sure that
the screen is positioned on the "discharge air" side.
■HPSbaglters(M5,M6,F7,F8,F9)
Bag lters last a long time but are non-regenerative. They must be replaced when they are clogged. Check the condition of the fasteners
and gaskets. Bag lters may be tted in compressible channels or encased in universal frames with gaskets.
■High-e󰀩ciencyandHEPlters(E10-H14)
These come in large-media frames. Follow the assembly and maintenance instructions provided with the cells.
Compressible track Universal frames
■Carbonlters
There is no way to know when breakthrough will occur on a carbon lter.
ts service life depends on how it is used:
- Type of impurities to be ltered,
- Concentration of these impurities,
- Average usage time,
- Air ow.
Frame
To nd out the how long a lter will last under your specic conditions of use, contact the manufacturer of the lter.
IMPORTANT: Wear gloves and protective clothing when changing the lters. Place the dirty lters inside bags.
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■Droplet separator
Depending on the type of extraction, the separator frames can be
disassembled as follows:
■Side extraction:
Side
extraction
Retaining
bracket
Frontal
extraction
1. Remove the separator's side access panel (4 screws)
2. Pivot the 2 retaining brackets to release the separator (1 at
the top, 1 at the bottom)
3. Pull the separator towards you to remove it from the unit
■Frontal extraction:
1. Open the separator's access door (opening handle)
2. Pivot the 2 retaining brackets to release the separator frames
(1 at the top, 1 at the bottom)
3. Detach the frame from its runner in the direction of the air ow
(removal via a recess in the runner)
4. If the separator is made up of several frames, slide the second
one to position it opposite the recess and detach it, etc.
When retting, remember to lock the frames using the retaining
brackets.
5.4 - Humidiers
IMPORTANT: The type of humidier used and the water quality
must comply with the regulations in force.
The upper limit value for non-pathogenic bacteria is 10,000 CFU/
ml (Colony Forming Units). However, it is best to check and clean
the air handling unit from 1,000 CFU/ml onwards (standard EN
13053). An overow with siphon must be installed on adiabatic
humidiers. UV treatment and cleaning are recommended.
■Steamhumidier
Ordinary maintenance simply involves having the steam cylinder
replaced and the unit cleaned each year. This must be carried out
by a qualied technician.
■Cleaning or replacing the steam cylinder
This is necessary when deposits on the active surface of the
electrodes prevent normal current ow (alarm E06, E08).
Disassemble the cylinder as follows:
- Press the manual drain button to completely empty the water
in the cylinder,
- Remove the cylinder steam hose,
- Disconnect the main electrodes and the level electrodes,
- Remove the retaining spring and twist o󰀨 the cylinder.
The steam cylinder can generally be reused after descaling (scale
on the electrodes prevents the free ow of water and current).
Unscrew the clamp and remove the bottom lter. Flush away any
mineral debris in the cylinder under running water and clean the
grilles with an o󰀨-the-shelf cleaner.
Replace the cylinder if the electrodes are too badly corroded. Only
the cylinder body and O-ring need to be changed (do not change
the capping ring, seat or lter).
Reassemble the cylinder by following the above steps in reverse
order after checking or replacing (if necessary) the seal between
the coupling and the drain unit.
Cylinder
Filter
Gasket
Raceway
End piece
■Cleaning the unit and seasonal servicing
Check and clean the unit once a year. Drain the unit and
disconnect it from the power source before doing so:
- Disassemble or wash the water supply valve and check the
cleanliness of the inlet lter,
- Remove the drain unit and clean the lines and nozzles,
- Inspect the water supply, steam supply and condensate drain
pipes and replace them if necessary.
■Servicing frequency
- Check the connections each time the air handling unit is
turned on,
- Check the condition of the cylinder. If necessary, replace it
once every three months,
- Retighten the electrical connections and check the
components and correct di󰀨usion of steam each year.
For further information, refer to the manufacturer's instructions
delivered with the unit.
5 - MAINTENANCE
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