CLIVET WSAN-XEM HW 35.4, Installation And Operating Manual

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M0M140L15-01 WSAN-XIN 18.2-45.2 39
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 fan fixing X
4 coil cleaning X
5 water filter cleaning X
6 water: quality, ph, weight of glycol (%) X
7 check the exchanger efficiency X
8 circulating pumps X
9 check of the fixing and the insulation of the power lead X
10 check of the earthing cable X
11 electric panel cleaning X
12 capacity contactor status X
13 termina closing, cable insulation integrity X
14 voltage and phase unbalancing (no load and on-load) X
15 absorptions of the single electrical loads X
16 test of the compressor crankcase heaters X
17 Checking for leaks *
18 survey of the refrigerant circuit operating parameters X
19 safety valve *
20 protective device test: pressure switches, thermostats, flow switches etc.. X
21 control system test: setpoint, climatic compensations, capacity stepping, water / air flow-rate variations X
22 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. The leak control must be effected with annual renewal.