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ACVIBA HE
AIR-AIR PACKAGED UNITS
COMPACT VERTICAL INVERTER
IOM_ACVIBA HE_35ia80i_207910_190501_EN
MAINTENANCE
CONSERVATION AND CLEANING
Precaution!
Do not use aggressive cleaning products nor varnish solvents.
Avoid water penetration inside the motor or the electronic components (e.g. through the direct contact with joints or
holes of the motor), observe the protection class (IP).
Electrical circuit
: Make sure that all the electrical connections
–wires, contactors and terminals- are properly tight.
Register the readings of kW and amperes at each compressor and fan motor phase. Check the start current. Check that
all the mechanical components, pressure switches and so on are working properly.
Refrigeration circuit
: Check if there is any refrigerant leak, noises or vibration. Proceed to measuring temperatures
and/or pressures of the most important components of the system and register them on the maintenance sheet
(compressor discharge and suction, expansion valve, exchangers’inlet and outlet, etc…).
Compressor:
Check regularly the lubricant level, the presence of vibrations or noise and the motor insulation.
Drainage system
: Verify the condition and the correct operation of the drainage tray and drain trap. It is necessary to
clean the condensate trays after the first day of operation. Then, clean them at least once a year. Take into account the
meteorological conditions, e.g. in areas where falling leaves or the flight of seeds may obstruct the drain trap. Clean
them also at mid and late spring and autumn. The dates are approximate and will depend on the plants blooming, falling
leaves and seeds seasons. Other factors such as human activities may interfere in the cleanliness conditions.
Air filters:
Clean the filters after the first operating hours to remove possible light materials such as pieces of paper or
polystyrene, etc. that may have been dragged through air circulation. Clean again every 3 months (or more often
depending on operation). The filters can be cleaned with soapy water. Then rinse them with clean water and let dry. If
necessary replace the filters before they are in poor conditions (refer to the current legislation, EN 779, UNE-EN
13053…).
Coils
: At least once a year clean the coils with water and detergent, then dry with air at low pressure. Never clean with a
wire brush, water and/or air at high pressure (max. 6 bar).
Fans:
Check the direction of rotation of the fans, verify the supporting parts. Check the transmission elements and the
operating status.
Before handling the fan make sure that it is disconnected from the main power supply even though it is already stopped
and control that nobody may start it during the intervention.
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A regular inspection of the unit is required to avoid dirt accumulation in propellers, turbines, motors and grids that
could entail risks and significantly shorten their life. The frequency will depend on the working conditions.
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Keep the airways of the fan free
– danger because of objects dropping out!
-
Check the free flow of the condensation water through the evacuation openings is necessary (if there are any).
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During cleaning operations be very careful not to unbalance the propeller or the turbine.
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In case of incorrect cleaning operations no guarantee is assumed regarding corrosion formation / paint adhesion for
unpainted / painted fans.
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To avoid humidity accumulation in the motor the fan must be operated during at least 1 hour at 80 to 100% of its
maximum speed before cleaning!
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After cleaning, the fan must be operated during 2 hours at 80 to 100% of the maximum speed to dry it!
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Check the fan regularly to detect possible mechanical vibrations (recommended every 6 months). Keep in mind the
limit values indicated the ISO 14694 and perform correction measures in case of exceeding them (e.g. posterior
balance to be completed by trained specialists).
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Check the impeller, in particular weld-seams, for possible cracks.
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The fan or motor is maintenance-
free due to the use of ball bearings with “life-long lubrication”. At the end of the
grease life (30-40.000h approx.) it is necessary to replace the bearing. Please contact our Service Department in this
case as for all other damage (e.g. to the coil or electronics).
