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Maintenance
11.2 Maintenance check list
Intervention frequency (months)
1 6 12
1 presence of corrosions X
2 panel fixing X
3 fan fixing X
4 coil cleaning X
5 water filter cleaning X
6 hydraulic system filling pressure X
7 water: quality, pH, glycol concentration X
8 air in the piping X
9 circulation pump X
10 check of the fixing and the insulation of the power lead X
11 check of the earthing cable X
12 electric panel cleaning X
13 power remote controls status X
14 clamp closure, cable isolation integrity X
15 voltage and phase unbalancing (no load and on-load) X
16 absorptions of the single electrical loads X
17 compressor casing heaters test X
18 leak control * X
19 cooling circuit work parameter detection *
20 safety valve * X
21 protective device test: pressure switches, thermostats, flow switches etc.. *
22 control device test: alarm signal, thermometers, probes, pressure gauges, etc. X
23 check schedulers, setpoints, compensations, etc. X
24 fill in the unit’s booklet
*Refer to the local regulations. Companies and technicians that carry out installation, maintenance/xing, leak control and
recovery interventions must be CERTIFIED as required by local regulations.
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