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Any cleaning, inspection, control, ordinary and extraordinary
maintenance must be performed by expert, authorized
and qualified technical personnel for the execution of
the activities indicated above. These activities must be
performed with the machine switched off and not powered
in a workmanlike manner as prescribed by the national laws
in force.
Prepare several bags of environmentally friendly descaler or
similar cleaning liquid for cleaning.
Cleaning Instructions:
1. Calculate the amount of descaler required based on the total
water volume of the hydraulic circuit and the percentage of
limescale in the water.
2. Add the descaler, or the cleaning liquid of your choice, to the
water tank and the limescale remover.
3. Using the contactor, start the water pump every 10 minutes
and pour the descaler into the water more quickly.
4. After carefully following the first 3 steps, proceed as follows:
• let the water pump run for about 1 or 2 hours;
• after this time, replace the descaling solution that is being
introduced into the circuit with an anti-rust agent. Then,
empty the water circuit and check the water quality. If the
drained water is cloudy, it means that the cleaning effect has
been successful;
• if residues of limescale, sand and other foreign bodies are
still present, add further detergent liquid and let the dirty
water flow through the drain outlet. Check that the hydraulic
circuit pipes are now clean and free of encrustations.
Otherwise it is advisable to have the system cleaned by a
specialized technician;
SYSTEM CLEANING
ATTENTION
Do not perform cleaning with the power on to avoid
damage caused by electric shock.
The whole system needs to be cleaned periodically.
Despite the use of treated water, it is possible that particles of
carbon dioxide or other minerals may deposit on the surface of
the unit, which could affect the efficiency of the exchanger. Clean
and remove such residues with formic acid, citric acid, acetic acid
or other organic acids.
ATTENTION
Do not use chloracid based solutions. This substance is
highly corrosive and would cause water and refrigerant
leaks.
ATTENTION
During cleaning operations, do not allow the cleaning
solution to come into contact with the eyes and exposed
skin.
ATTENTION
Do not carry out cleaning operations if there are lesions
or abrasions on your hands. Always use PPE suitable for
the operations that are taking place on the unit.
• once the entire hydraulic circuit is clean, charge it completely
and let it run for about 1-2 hours.
5. Stop the unit to allow the waste water to drain completely
from the system. If this is not possible, drain the waste water
at the same time as the make-up water until all the waste
solution has been completely drained. The operation is to be
considered successful when the water that flows from the
circuit is transparent and with a pH of 7.0.
6. Repeat steps 4 and 5.
7. Clean or, if necessary, replace the filters of the hydraulic circuit.
8. Check if the difference between the entering and leaving water
temperatures has improved.
9. During the entire cleaning process, monitor the correct
operation of the unit.
ATTENTION
During cleaning operations, do not allow the cleaning
solution to come into contact with the eyes and exposed
skin.
CLEANING THE FINNED PACK EXCHANGER
To allow the finned pack exchanger to work properly, it is necessary
to make sure that there are no leaves, lint, insects or other
contaminants on the external layer of the exchanger, this could
cause greater energy consumption and high discharge pressure.
The finned pack exchanger should be cleaned every 6/12 months
of operation and more frequently in the event of a heavily
polluted environment.
To clean, proceed as follows:
1. Disconnect the power supply.
2. Clean the fins of the exchanger with high pressure air in
the opposite direction to the air inlet into the exchanger or
clean with a jet of water always in the direction of the fins.
Pay attention to the pressure exerted by the water jet during
cleaning, the jet must not damage or distort the fins and risk
electrical damage. If the surface of the exchanger is particularly
dirty with oily substances, clean with a neutral detergent.
3. It is possible to use a vacuum cleaner to clean the finned pack
exchanger.
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