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9 - MAINTENANCE
•
If a long period of inactivity is foreseen :
•
put the unit in OFF
•
wait for 1 minute, so that the water valves are in rest
position
•
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.
9.4 PUT A REST
It is very important for the air treatment coil to be able to offer
maximum thermal exchange. Therefore, the unit must always
operate with the filters installed and clean.
Cleaning and replacement of filters are very important in terms
of health and hygiene.
Operation with clogged filters leads to a reduction in the air
flow rate, resulting in malfunctions and unit shutdowns. It may
even cause the unit to break down.
How often the filters need to be checked depends on the
quality of outdoor air, unit operating hours, dust and number
of persons in the rooms.
As a guideline, cleaning should ideally take place between
WEEKLY and MONTHLY. It is advisable to start with frequent
checks, and to adjust the frequency based on how much dirt
is discovered .
•
Remove the closing doors
•
Carefully extract the filter so that no dust reaches the
parts below
•
Wash the filtering mattress in warm water with a
common detergent.
•
Carefully rinse it under water while preventing to pour
water in the room
•
Dry the filter
•
Reinsert it to its seat
•
Reassemble the closing doors
Old filters, washing residuals and residual parts must be
disposed of, according to the law in force .
9.6 PLEATED FILTERS
9.1 GENERAL
Maintenance must be done by authorized centres or by
qualified personnel
The maintenance enables:
•
maintain the unit efficiency
•
Reduce the deterioration speed to whom every equipment
is subject over time
•
Assemble information and data to understand the state of
the unit efficiency and avoid possible damages
The inspections should be carried out at least:
•
Every year for only the cooling units
•
Every six months for the cooling and warming units
The frequency, however, depends on the use .
in the event of frequent use it is recommended to plan inspec-
tions at close intervals :
•
frequent use (continuous or very intermittent use, near the
operating limits, etc)
•
critical use (service necessary) .
9.2 INSPECTIONS FREQUENCY
9.3 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 ..
Check the condition of the parts making up the structure.
Paint so as to eliminate or reduce oxidation at the points in the
unit where this problem may occur.
Check that the paneling is fastened correctly. Poor fastening
may give rise to malfunctions and abnormal noise and
vibration .
9.5 STRUCTURE
