CLIVET WDAT-iL3 250.2, Installation And Operating Manual

Page: 35 / 58

M04Z40C18-02 WDAT-iL3 250.2-580.2 35
8.4 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:
•
frequent use (continuous or very intermittent use, near the operating limits, etc)
•
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 check the exchanger efficiency X
7 circulating pumps X
8 check of the fixing 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, 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
* European regulation 303/2008
Refer to the local regulations; and ensure correct adherance. Companies and technicians that effect interventions of installation, maintenance/
repairs, leak control and recovery must be CERTIFIED as expected by the local regulations. The leak control must be effected with annual
renewal.
8.5 Water side exchanger
It is very important for the exchanger to be able to provide the maximum thermal exchange, therefore it is essential for the inner surfaces to
be clean of dirt and incrustations.
Periodically check the difference between the temperature of the supply water and the condensation temperature: if the difference is greater
than 8°C–10°C it is advisable to clean the exchanger.
The clearing must be effected:
•
with circulation opposite to the usual one
•
with a speed at least 1,5 times higher than the nominal one
•
with an appropriate product moderately acid (95% water + 5% phosphoric acid)
•
after the cleaning rinse with water to inhibit the action of any residual product
8.6 Water filter
Check that no impurities prevent the correct passage of water.
8.7 Circulating pumps
Check:
•
no leaks
•
bearing status (anomalies are highlighted by abnormal noise and vibration)
•
the terminal protection covers are closed and the cable holders are properly positioned
•