CLIVET WSH-XSC3, Installation And Operating Manual

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8 Maintenance
8.1 General description
Maintenance must be done by authorized centres or by qualified personnel.
The maintenance allows to:
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maintain the unit efficiency
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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 efficiency 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 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.
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) 1 6 12
1 presence corrosion X
2 panel fixing X
3 water filter cleaning X
4 water: quality, ph, weight of glycol (%) X
5 check the exchanger efficiency X
6 circulating pumps X
7 check of the fixing and the insulation of the power lead X
8 check of the earthing cable X
9 electric panel cleaning X
10 capacity contactor status X
11 termina closing, cable insulation integrity X
12 voltage and phase unbalancing (no load and on-load) X
13 absorptions of the single electrical loads X
14 test of the compressor crankcase heaters X
15 Checking for leaks *
16 survey of the refrigerant circuit operating parameters X
17 safety valve *
18 protective device test: pressure switches, thermostats, flow switches etc.. X
19 control system test: setpoint, climatic compensations, capacity stepping, water / air flow-rate variations X
20 control device test: alarm signalling, thermometers, probes, pressure gauges etc.. X
* Refer to the local regulations; and ensure correct adherance. Companies and technicians that effect interventions of installation, maintenance/re-
pairs, leak control and recovery must be CERTIFIED as expected by the local regulations.
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