AIRTECHNIC EU BOX Air Handling Units User Manual

AIRTECHNIC EU BOX Air Handling Units User Manual

SAFETY

Industrial Security Symbols

The following symbols refer to particular dangers or give advice for safe operation:

CAUTION! DANGER! SAFETY ADVICE
DANGER FROM ELECTRIC CURRENT OR HIGH VOLTAGE!
CRUSH DANGER!
DANGER! DO NOT STEP UNDER HANGING LOAD!
CAUTION! HOT SURFACE!
IMPORTANT, INFORMATION!

Safety advice

**** AIRTECHNIC Modular Airhandling Units are produced in accordance with the latest technical standards and our quality assurance program which includes material and function tests ensure the final product is of high quality and durability. Never the less these fans can be dangerous if they are  not used and installed correctly, according to our instructions.

Before installing and operating AHUs please, read instructions carefully!

• Only use fan and other components in modular AHUs after they have been securely mounted and fitted with protection guards to suit the application (Guards can be supplied for all fans in our program).
• Installation, electrical and mechanical maintenance and service should only be undertaken by qualified personnel!
• The modular AHUs must be used only according to its design parameters, with regard to performance (data plate) and mediums passing through it!

DESCRIPTION

The EU-Box series AHUs are of modular construction and can be offered in any desired combination. The AHUs are used for heating, cooling, filtering and mixing air and also for heat recovery. With numerous unit sizes we are able to produce air volumes from 500 m /h to 100.000 m /h in standard series and 3 3 also larger volumes in special conditions.

CONDITIONS OF USE

Radial fans can be used for ventilation of

• clean air
• slightly dusty and greasy air
• slightly aggressive gases and fumes (please refer to our engineers)
• mediums up to an atmospheric den-sity of 1,3 kg/m3
• mediums up to a max humidity of 95%.

STORAGE, TRANSPORT

Store components in a dry place and weather protected in its original packing (if available):

• Cover open pallets with tarpaulin and protect the fans .against dirt (i.e. stones, splinters, wires, etc)
• Storage temperatures between -30 C and 40 C. 0 0
• With storage duration of more than one year please check bearings on soft running before mounting (turn by hand).
• Forklifts and cranes can be used to transport modules. When employing a crane, straps must fastened on the modules of theAHU (Drawing 1).
• Use suitable assembling means as e.g scaffolds conforming to specifications.
• Prior to lifting modules, lock all service and access doors.

DANGER!

DO NOT STEP UNDER HANGING LOAD!

ASSEMBLING – OPERATING

Installation and electric work to be performed by skilled and qualified personnel only and in accordance to applicable regulations and manufacturers or
mechanical engineer instructions.

Before installing remove transport conerpieces (when available)!

A.H.U. must be assembled on a rigid, level foundation and or other supporting structures

• Style and design of the foundation must meet the requirements for acoustic, draining water from drop eliminator and humidifier taking into account height of siphon, according to the sub-pressure of the fan on the installation point.

When installing A.H.U. on noise reducing base between unit and foundation, apply the following procedure:

• Using a marker, make a sketch outlining the complete unit on the foundation
• Place rubber strips on foundation according to outline
• Position assembler units flush with rubber strips
• Anti-shock rubbers between unit and base not required because there are internally.

The flexible connection between the duct and air handling unit must be tension free when mounted. Mounted length of the flexible connection must be shorter than the initial extended length.

The modules must be assembled and positioned prior to connecting them with supplied connection (or sealing) material. ( Drawing 2)

Drawing 2 – 45mm Profile

Gasket and external G ion are placed, re Connection are Placed  Where It’s required optional placement of silicone sealant.

For the connection of the individual and modules depending on the type and size of the unit, external and / or internal connections are used.

The hinges of the must be adjusted properly inspection doors using the screws as shown in the pictures below the, , in order for door fit properly and in the opening and there is no airto securely leakage. Additional adjustment of the hinges may be required after moving the unit and during the first start- up.

When the adjustment of the hinges is completed and the door closes properly, we adjust the locks so that the door locks tightly and there is no air leakage. Additional adjustment of the slock may be required after moving the unit and during the first start-up.

Use a long clamp, to bring the 2 sections closer. Install all necessary cting elements before removing the clamp.

PROPER Installations of WEDGES

Use gentle force

PROPER REMOVAL of WEDGES

Use gentle force

REMOVING OF THE WEDGES

A you remove wedge No3fter push the panel from its inner side outwards

ALWAYS FOLLOW ALL SAFETY RULES

The connection for electrical components in the unit i.e motor for ventilators, pumps, electric heaters, actuators etc. to be in accordance to manufacturers instructions and local ordinances.

Electrical Heating Coils are to be provided with a safety switch. The safety switch should be inspected for proper operation after initial installation and after long periods of downtime.

During maintenance inspections of air handling unit, electric heating coils should be removed of all foreign matter and cleaned when necessary. If provided, ground cables located on flexible connections for the fan and ducting should be inspected if properly installed and tightened if necessary.

Do not use metal conduit gland with plastic connector box.

VENTILATOR SECTION

Electrical :connections
They are made in accordance with

• Technical connection regulations, local ordinances and national electric codes.
• Power supply must be compatible to details on data plate.
• Motor to be wired according to wiring diagram located in junction box.
• Electrical cables within the unit must be securely fastened preventing from mechanical forces, far away from the fan inlet and long enough, that periodic tension adjustments to belt and pulleys will not be hampered.

Motor Protection:
a) Through thermal contact (winding with open/close thermal contact) direct driven ventilators through speed controllable external rotor motors.

The thermal contact used for motor protection, should be installed as to prevent a restart after a malfunction.

b) Through motor protection switch, fans utilizing a standard motor through belt and pulleys.

The motor should be protected from overloading through a protection switch. The thermal relays in the unit should be set with +10% of measured current, but not exceeding the rated current of the motor.

• Prior to inspecting direction of rotation:
  • Remove any foreign matter from fan.
  • Check impeller rotation by hand for smooth running.
• Install protection guards (accessories) or prevent easy access to fan.
• Switch on unit for a short period to check direction of rotation as per direction arrow on fan casing.

Motor can overload when fan is rotating in wrong i direction.

Three phase A.C. motor

• Direction of rotation can even-tally be reversed by exchanging two phases.

Single phase motor

• Change direction of rotation if necessary by changing Z1 (black) and Z2 (orange) (   change of current direction in secondary winding)

Prepare fan for initial operation:

• Correct mechanical installation.
• Electrical installation in accordance with applicable regulations.
• Remove foreign matter from inlet and outlet area and from inside of fan.
• Transport safety protection on ventilator base frame removed?
• Tension on belt and pulleys sufficient? (Maintenance)
• Protection guard (accessories) installed, no easy access to fan or fan being installed out of arm sweep.

**** Only commence operation when it is installed in accordance with applicable ordinances

• **** If the fan is started under free blow conditions, i.e. prior to connecting to ducting system, the current consumption may exceed the normal maximum (forbidden area of performance curve)!

**** The thermal protection of the motor may be activated!

Fan in operation

Observe correct function (smoothness of running, vibration,
unbalance, current consumption in all three phases, and possible controllability).

By regular inspection of the fan inlet, make sure debris has not collected on the guard (when available) and clean if necessary!

AIR DAMPERS

All screw fitting and connections to be checked for sufficient tightness. When utilizing an actuator, adjust linkage so that a 900 swing angle is guaranteed and shutters reach end position when closed.

PrepareAir Dampers for initial operation:

• Mechanical components accordingly assembled?
• In case several dampers are connected, the linkage must be checked.All screw fittings and connections are to be checked for sufficient tightness
• Swing angle of 900 guaranteed (Do reach enddampers position when closed)?
• Actuators properly connected (Manufacturers instructions)?
• Level and gears are free from interference

BAG FILTERS
The filter elements to be fastened in frames using tension clamps. Check for air tight placing of filter in filter frame.

PANEL & NORM FILTERS
The Z-Line filters are inserted into filter frame. Check for air tight placing of filer in the casing. Filter element must not be damaged (filter will be unstable).

HEATING COIL (with warm water)
Caution! When connecting water pipes, properly connect water inlet and water outlet (in general reverse direction flow with water inlet located at air exit side) as in drawing 4.

COOLING COIL (with cold water)
Caution! When connecting water pipes, properly connect water inlet and water outlet (in general reverse direction flow with water inlet located at air exit side), as in drawing 5.

According to acoustic demands, pipes are to be connected with or without elastic compensatory. Pipe connections above the Air Handing Unit must include a flange, allowing easy access to the coils during maintenance and paper

ENERGY RECOVERING SYSTEM

The most frequent energy regain system is that of plane plated air/air exchangers.

FIGURE OF THE CONDENSATES & SMELLS SIPHON

CAUTION!
When tightening the pipes on the A.H.U’s coils and condensates, a second spanner must be used to hold the  locknut.

If condensate, drain and overflow pipes exist, make sure externally located connections are connected to a siphon. The height of a siphon for low and excess pressure, must be appropriate for the Air Handing Unit, according to subpressure of the fan at this point, to prevent unwanted and unhealthy air from entering or exiting connected pipes.

When connecting coils with screw thread on the pipes, all components must be properly supported to prevent damages.

CAUTION

Heating Coil (PWW) Preparation for Initial Operation

• Appropriate installation of all mechanical components and connecting pipes.
• Heating Coil during filling with water thoroughly de-aerated.
• When necessary re-tighten connections (Installation)
• For long periods of down time and especially during freezing conditions, the heating coil and connections should be emptied. Use compressed air to push out residual water and remove all drain plugs
• Cooling Coil (PKW) Preparation for Initial Operation
• Appropriate installation of all mechanical components and connecting pipes?
• Cooling Coil during filling with water thoroughly de-aerated.
• When necessary re-tighten connections (Installation)
• For long periods of down time and especially during winter (freezing conditions), the freezing piping and connections should be emptied. Use compressed air to push out residual water and remove all drain plugs. If you don’ t want to do this, you must make provision for antifreezing protection: closing of tampers or circulators’ operation at +5 C.

MAINTENANCE

Installation, service and electric work to be performed only by skilled and qualified personnel and in accordance to applicable regulations and manufacturers instructions.

Use only original spare parts manufactured and supplied
by . AIRTECHNIC
Use only commercial cleaning material paying attention to the prescribed safety measures and do not use any abrasive tools (surface protection will be destroyed)

Before any maintenance work is undertaken please:

• **** Stop fan in accordance to regulations and disconnect all poles from mains supply.
• **** Wait until impeller is stationary!
• Make sure that a restart is not possible!
• Prevent water from entering heat exchangers.
• Allow heat exchangers to cool down.

Cleaning Ventilator Module:

• Clean inlet opening
• Clean impeller (when necessary remove protection guard)
  • Do not flood motor
  • Do not bend impeller blades
• Install protection guard

Inspecting belts and pulleys:
The belts and pulleys should be observed regularly during initial operation. After 0,5 to 4 hours of full load operation and afterwards 24 operating hours the belts and pulleys should be checked if retensioning is necessary.

• Remove belt protection.
• Check belts according to drawing 6.
• If necessary retension belts:
  1. Loosen locking screw located on side of motor rail.1.
  2. Tense belts by adjusting tensioning bolt as needed.
  3. Fasten locking screw on motor rail.
• Install belt protection.

When replacing fan belts becomes necessary, loosen belt drive!

Measuring device with tension hook (A) placed in the middle of fan belt. Put drag indicator (B) in position. Raise profile dependent tested tension according to scale (C). Pull measuring device with right angled direction downwards. On scale (D) of drag indicator read depth of impression. If necessary adjust initial tension to preset depth impression (E )

General Inspection

• Bearing clearance too large?
• Bearing lubricant leaking?
• Surface affected (corrosive medium)?
• Unusual noises?
• Is fan performance for eventual canal system expansion sufficient?

AIR DAMPERS

• Periodically (every 3 months) check for:
  • Performance.
  • Dirt, soil or other foreign matter.
  • Damages.
  • Corrosion.
  • Parts are firmly mounted.
  • Moving components move smoothly and easy.
• As Necessary:
  • Lubricate Bearings (Plastic Bearings do not require lubricating).
  • Clean.

FILTERS
Filters are not reusable and should be replaced once the bellow listed pressure loss is reached

• Replacing Bag filters:
  • Open serviceAccess.
  • Loosen Tension Clamps.
  • Extract Bag Filter.
  • Insert new Bag Filter.
  • Tighten Tension Clamp.
  • Close ServiceAccess.
• Replacing lters and Z-Line Filters :fi
  • Open serviceAccess.
  • Loosen Tension Clamps.
  • Extract Filter.
  • Insert new Filter.
  • Tighten Tension Clamp.
  • Close ServiceAccess.

For better control of the filters, installation of an optional differential manometer with acoustic or illuminated sign is recommended in the filter unit.

WATER SPRAY HUMIDIFIER

• Periodically (every 3 months) check for:
  • Performance.
  • Dirt, soil or other foreign matter.
  • Damages.
  • Salts.
  • Parts are firmly mounted.
• As Necessary:
  • Clean (e.x.with vinegar).

HEAT EXCHANGER SECTION
(with warm or cold water)

Extra for Cooling Coils: Check drop eliminator for damages, corrosion and dirt accumulation.| X|

Badly soiled heat exchangers will be limited in their function and must be cleaned immediately. To clean the fins, use a vacuum, compressed air or a soft brush. Never use hard or sharp object to clean heat exchangers!

Drop eliminators which are soiled will lead to condensation passing through. To clean drop eliminator fins AIRTECHNIC   recommends ROGA-LW.

AIRTECHNIC products are subject to steady quality controls and are in accordance with valid regulatio

Company Product

Factory – THESSALONIKI
End of Meandrou Str., 57013, Oraiokastro, Thessaloniki 2311 – 82.40.00
[email protected]

References

• Airtechnic
• AIRTECHNIC CHATZOUDIS E.P.E. (@airtechnic.chatzoudis) • Instagram photos and videos

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