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8 - MAINTENANCE
It is very important for the exchanger to be able to provide the
maximum thermal exchange. Therefore, it is essential for the
inner surfaces to be clean of dirt and incrustations.
Periodically check the difference between the temperature of
the supply water and the condensation temperature. If the
difference is greater than 8 °C – 10 ° C it is advisable to clean
the exchanger.
The clearing must be effected :
• With circulation opposite to the usual one
• With a speed at least 1,5 times higher than the nominal one
• With an appropriate product moderately acid (95% water +
5% phosphoric acid
• After the cleaning rince with water to inhibe the detergent
rests.
8.8 ELECTRIC FANS
8.7 WATER EXCHANGER
Check :
• the fans and the relative protection gridsare well fixed
• The fan bearings (evident by noise and anomalous
vibrations )
• the terminal protection covers are closed and the cable
holders are properly positioned
8.4 MACHINE BOOKLET
It’s advisable to create a machine booklet to take notes of the
unit interventions.
In this way will be easier marker the various interventions and
will be e facilitate any troubleshooting.
Report on the booklet :
• data
• type of intervention effected
• intervention description
• Carried out measures etc ..
If a long period of inactivity is foreseen
• Turn of the power in order to avoid electrical risks or
damages by lightning strike
• avoid the risk of frosts (empty or add glycol in the plant
sections subjected to temperatures below zero , power
antifreeze resistances if are present )
It’s recommended that the starter after the period of detention is
made by a qualified technician, especially after seasonal stops
or seasonal switch.
When restarting, refer to the START-UP section .
Schedule technical assistance in advance to avoid hitches and
be able to use the installation when necessary.
8.5 PUT A REST
Verify that there are no impurities which hinder the smooth
passage of water.
8.9 CIRCULATION PUMPS
Verify :
• no leaks
• Bearing status (anomalies are highlighted by abnormal
noise and vibration)
• The closing of the terminals cover and the correct
positioning of the cable glands.
8.6 WATER FILTER
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