Electra Air-Conditioning MQH 10T, Руководство по установке и обслуживанию

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Maintenance
9.8 Evaporator
Check at regular intervals that the water side of the heat exchanger is perfectly clean. To do this, measure the pressure
drop, water side (see Section 8) or measure the temperature of the liquid leaving and entering the heat exchanger, and
compare it to the evaporation temperature.
To obtain an effective heat exchange, the difference between the temperature of the leaving water and the saturated
evaporating temperature must be in the 2 - 4°C range. A greater difference would indicate a low efficiency of the heat
exchanger (i.e. the heat exchanger is dirty).
For other maintenance operations (extraordinary overhauling, replacement of the heat exchanger etc.), contact an autho-
rised Service Centre.
In this case, the heat exchanger must be subjected to chemical cleaning, an operation that shall be carried out by autho-
rised engineers.
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