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IOM_ACVBA-ACVA_351a2402_207958_180109_EN
ACVBA-ACVA
PACKAGED VERTICAL COMPACT UNITS
AIR-AIR
OPTIONAL
EC MOTOR FANS
Cleaning
Danger due to electric current
Clean the circulation area of the air fan.
Attention!
Do not use any aggressive, paint solvent cleaning agents when cleaning.
Make sure that no water enters inside the motor and the electronics (e.g. by direct contact with seals of motor
openings), observe protection class (IP).
Control the free flow of the condensation water evacuation openings (if there are any) that are appropriate for set up
position.
In case of incorrect cleaning work no guarantee is assumed regarding corrosion formation / paint adhesion for
unpainted / painted fans.
To avoid humidity accumulation in the motor, the fan must be operated during at least 1 hour at 80 to 100% of the
maximum speed before cleaning!
After the cleaning process, the fan must be operated during 2 hours at 80 to 100% of the maximum speed for drying
purposes!
REFRIGERANT CHARGE
Should it be necessary to add or recover refrigerant use a digital scale that is suitably reinforced and prepared to
withstand the handling of the refrigerant bottle.
Charge to be in the LIQUID state.
Introduction of R-410A refrigerant in the liquid state inside empty tubes produces temperatures below 0ºC until the
internal pressure reaches 7 bars.
Leaks should be repaired immediately.
Never overcharge the system.
Never use the compressor as a vacuum pump.
If leakage symptoms appear during operation proceed to a leak test.
A HCF detector is necessary in case of small leaks.
If a gas leak is detected proceed to removing and recuperating the entire refrigerant charge. Pressurize the system
with dry nitrogen. If no leak is detected proceed to vacuuming the system and refill with refrigerant.
Do not reintroduce used refrigerant, send it to an authorized recycling location.
As for the load of refrigerant, follow the guidelines of the manufacturer of the outdoor unit.
Never use oxygen to pressurize the system or purge lines for leak test. Oxygen reacts violently
with oil, which can cause an explosion that would result in damage, personal injury or death.
WARNING!
Should it be necessary to complete brazing operation first of all proceed to filling the circuit with
dry nitrogen. Burning refrigerant produces toxic gas emissions.
WARNING!
Voltage supply for motor must be interrupted and secured against restoration!
ATTENTION!
