M02S40N16-00 WSA-XEE 122-402 39
8 Maintenance
8.1 General description
Maintenance must be done by authorized centres or by qualied personnel.
The maintenance allows to:
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maintain the unit eciency
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increase the life span of the equipment
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assemble information and data to understand the state of the unit eciency and avoid possible damages
Before checking, please verify the following:
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the electrical power supply line should be isolated at the beginning
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the unit isolator is open, locked and equipped with the suitable warning
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make sure no tension is present
After turning o 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.
8.2 Inspections frequency
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 shorter intervals:
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frequent use (continuous or very intermittent use, near the operating limits, etc)
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critical use (service necessary)
√ intervention frequency (months) 1612
1 presence corrosion X
2 panel xing X
3 fan xing X
4 coil cleaning X
5 water lter cleaning X
6 check the exchanger eciency X
7 circulating pumps X
8 check of the xing and the insulation of the power lead X
9 check of the earthing cable X
10 electric panel cleaning X
11 capacity contactor status X
12 termina closing, cable insulation integrity X
13 voltage and phase unbalancing (no load and on-load) X
14 absorptions of the single electrical loads X
15 test of the compressor crankcase heaters X
16 leak control* X
17 survey of the refrigerant circuit operating parameters X
18 protective device test: pressure switches, thermostats, ow switches etc.. X
19 Safety valves: refer to the local regulations
20 control system test: setpoint, climatic compensations, capacity stepping, water / air ow-rate variations X
21 control device test: alarm signalling, thermometers, probes, pressure gauges etc.. X
* European regulation 303/2008
Refer to the local regulations; and ensure correct adherance. Companies and technicians that eect interventions of installation, maintenance/
repairs, leak control and recovery must be CERTIFIED as expected by the local regulations. The leak control must be eected with annual
renewal.
8.3 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:
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date
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type of intervention eected
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intervention description
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carried out measures etc.
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