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 water: quality, pH, glycol concentration X
7 check exchanger efficiency X
8 circulation pump X
9 Check of the fixing and the insulation of the power lead X
10 earth cable check X
11 Electric panel cleaning X
12 power remote controls status X
13 clamp closure, cable isolation integrity X
14 Voltage and phase unbalancing (no load and on-load) X
15 Absorptions of the single electrical loads X
16 compressor casing heaters test X
17 Checking for leaks * *
18 cooling circuit work parameter detection X
19 safety valve * *
20 protective device test: pressure switches, thermostats, flow switches etc.. X
21 control system test: setpoint, climatic compensations, capacity stepping, air flow-rate X
22 Control device test: alarm signalling, thermometers, probes, pressure gauges etc X
NOTE
Refer to the local regulations. Companies and technicians performing installation, maintenance/repair,
leak control and recovery operations must be CERTIFIED as set out by the local regulations.
9 - MAINTENANCE