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II.13 Maintenance
IMPORTANT!
Maintenance is reserved exclusively for skilled personnel from workshops authorised by HITECSA , qualified to operate on this type of products. Pay close attention
to the danger signs on the unit.
Pay the utmost attention to the symbols located on the unit. Use EXCLUSIVELY original HITECSAspare parts.
IMPORTANT!
Always adopt personal protective equipment required by law (glasses, headphones, gloves, etc.).
DANGER!
Always act on the general automatic switch protecting the system before carrying out any maintenance work, even if it is purely for inspection purposes. Make sure
that no one accidentally supplies power to the machine; lock the general automatic switch iin the zero position.
DANGER!
Pay attention to high temperatures near the compressor heads and the supply pipes of the refrigeration circuit.
Control
General cleaning and checking unit
Finned coils
Fans
Compressor: oil check
Heat exchangers
Water filter
II.13.1 General cleaning and checking unit
It is advisable to perform the general washing of the unit with a damp
cloth every six months.
Always wait every six months to check the general condition of the unit, in
particular to check the absence of corrosion on the unit structure. Any cor-
rosion must be treated with protective paints in order to prevent possible
damage.
II.13.2 Cleaning of Finned Coils
DANGER!
Pay attention to the lugs and edges of the battery.
The coils must be washed and brushed gently with water and soap. Re-
move any foreign bodies from the condensing coils which may block the
passage of air, such as: leaves, paper, debris, and so on.
Replace the coils should it not be possible to clean them.
Failure to clean the coils increases load losses and therefore reduces overall
performance of the unit in terms of its flow arte.
For better battery protection, it is recommended to install the RPE accesso-
ries (battery protection networks) or FMB (metal filters batteries).
EQPI3X
Frequency
Every 6 months, the unit must undergo general
washing and its status must be checked
At least every 6 months.
In the case of installation with harsh operating conditions,
increase the frequency of the control.
At least every 6 months.
In the case of installation with harsh operating conditions,
increase the frequency of the control.
Every 6 months
At least every 12 months.
In the case of installation with harsh operating conditions,
increase the frequency of the control.
At least every 6 months.
In the case of installation with harsh operating conditions,
increase the frequency of the control.
II.13.3 Cleaning fans
Check the fan grids monthly making sure they are not obstructed by any
objects and/or filth. The latter, besides drastically reducing the overall per-
formance of the unit, in some cases causes the fans to break.
Notes
Any points where corrosion is starting need to be
touched up with protective paint.
The coils must be kept clear from any obstructions. If
needed, they must be washed with detergents and
water. Brush the fins gently to keep them from being
damaged.
The fan grilles must be kept clear from any ob-
structions. Make sure the motors and fan blades are
clean and that there are no abnormal vibrations.
The 270÷2100 models are equipped with an oil war-
ning light on the fixed compressor while the oil level
sensor is present on the inverter compressor, indica-
ting that there is no lubricating oil in the card.
Models 2115-2130 are equipped with oil warning lights
both on the fixed compressor and on the inverter
compressor. The lubricating oil level in the compressor
can be checked by means of the sight-glass.
Any incrustation of the exchanger may be detected by
measuring the pressure-drop between the inlet and
outlet pipes, using a differential pressure gauge.
It is mandatory to install a mesh filter on the unit's inlet
water piping. This filter must be cleaned from time to
time.
DANGER!
Pay attention to the fans. Do not remove the protective grids for any
reason whatsoever!
DANGER!
Always act on the general automatic switch protecting the system
before carrying out any maintenance work, even if it is purely for
inspection purposes. Make sure that no one accidentally supplies
power to the machine; lock the general automatic switch iin the zero
position.
EN
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