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9.3 Table of general maintenance jobs
Check any alarms.
Visually check for coolant leaks
Cleaning of the condenser coil. See following chapter
Check of electric connection tightness
Check for worn or damaged cables and replace as necessary
Check the noise level of the fan bearings
Check the torque of bolts, moving components and components subjected to
vibration
Check for any leaks on the cooling circuit.
Check for rust on the cooling circuit, especially the pressure vessels
Checking the operating parameters of the cooling circuits. For each circuit check the following:
The condensation pressure, comparing it with the outside temperature
The delivery temperature
The sub-cooled gas temperature
Liquid temperature
Ambient air temperature
Subcooling
The electrical absorption of the fans
Fan power supply voltage
(1)
Unless otherwise required by applicable laws
The frequency of the operations described in the table above should be considered indicative. In fact, it may undergo variations
according to the method of use of the machine and the system in which the latter is required to operate.
9.4 Check that the coils are clean
The accumulation of dirt on the exchange coils causes a malfunction of the machine.
This situation can lead to machine stoppage, as well as a definite increase in electrical consumption and wear.
INFORMATION:
Cleaning activities must be increased during the periods of higher formation of dirt (e.g.: in the period
when leaves or flowers fall from trees).
OBLIGATION:
Do not use high pressure cleaners to clean the coil as excessive pressure can cause irreparable
damage. Damage caused by cleaning with unsuitable chemical substances or excessive water
pressure is not covered by the guarantee.
Installation, use and maintenance manual
WORK TO BE CARRIED OUT
WORK INTERVALS
Start of
season
Every day
every 500
hours or 2
months
Start of
season
every 1000
hours or 3
months
(1)
44
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