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9 - MAINTENANCE
9.1 GENERAL
Maintenance must be done by authorized centres or by
qualified personnel
The maintenance allows to:
•
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
Before checking, please verify the following:
•
the electrical power supply line should be isolated
at the beginning
•
the unit isolator is open, locked and equipped with
the suitable warning
•
make sure no tension is present
After turning off the power, wait at least 5 minutes
before accessing to the electrical panel or any other
electrical component.
Before accessing check with a multimeter that there
are no residual stresses.
9.5 STRUCTURE
Perform an inspection every 6 months minimum.
The frequency, however, depends on the use.
In the event of frequent use it is recommended to plan
inspections 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 UNIT BOOKLET
It’s advisable to create a unit booklet to take notes of
the unit interventions.
In this way it will be easier to adequately note the
various interventions and aid any troubleshooting.
Report on the booklet:
•
data
•
type of intervention effected
•
intervention description
•
carried out measures etc.
9.4 PUT AT REST
Check the condition of the structure parts .
Paint so as to eliminate or reduce oxidation where
needed.
Check that the paneling is correctly fastened. Poor
fastening may give rise to malfunctions and abnormal
noise and vibration .
9.6 COIL
The accidental contact with the fins of the exchanger
may cause small cuts: use protective gloves.
The finned surfaces of the coils and especially the
drain pans are the places where micro-organisms and
moulds most easily flourish.
It is therefore very important to clean regularly with
suitable detergents and in case disinfect with
appropriate products.
Dust and deposits could cause obstructions .
In addition in the pan can proliferate microorganisms
and moulds.
It is very important to provide a periodic cleaning with
appropriate detergents and in case a disinfection with
sanitizing products.
After cleaning pour water into the pan to ensure a
regular flow.
9.7 CONDENSATE DISCHARGE
If a long period of inactivity is foreseen:
•
put the unit in OFF
•
wait a few minutes to allow all the actuators to
reach the rest position
•
Turn off the power in order to avoid electrical risks
or damages by lightning strikes
•
avoid the risk of frost (empty or add glycol to the
parts of the system exposed to temperatures below
zero, maintain powered any anti-freeze
resistances )
It’s recommended that the starting-up after the
stopping period is performed by a qualified technician,
especially after seasonal stops or seasonal switch.
When restarting, refer to what is indicated in the
START-UP section.
Schedule technical assistance in advance to avoid
hitches and to guarantee that the system can be used
when required.
Summary of Contents for Airflow 2020
Page 1: ...Installation and operating manual Décember 2017 ...
Page 69: ...User manual ...
