CLIVET WSAN-XIN 21-141, Installation And Operating Manual, Page: 42 / 72

42 WSAN-XIN 21-141 M0R940E13-00
9.6 Control check list
√ 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 carter resistances X
16 leak control* X
17 survey of the refrigerant circuit operating parameters X
18 check of the 4-way change X
19 protective device test: safety valves, pressure switches, thermostats, flow switches etc.. X
20 control system test: setpoint, climatic compensations, capacity stepping, water / air flow-rate variations X
21 control device test: alarm signalling, thermometers, probes, pressure gauges etc.. X
* European regulation 303/2008
Refer to the local actuation regulations; in short and just as an indication the regulation order as follow. 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.
9.7 Air coil
Contact with the exchanger fins can cause cuts: wear protective gloves to perform the above described operations.
It is extremely important that the battery gives the maximum thermal exchange; therefore, its surface must be cleaned from dust and deposits.
Remove all impurities from the surface.
Using an air pressure gun, clean the aluminum surface of the battery; be careful to direct the air in the opposite direction of the fan air
movement.
Hold the gun parallel to the fins to avoid damages.
As an alternative, an aspirator can be used to suck impurities from the air input side.
Verify that the aluminum fins are not bent or damaged, in the event of damages contact the authorized assistance center and get the battery
“ironed out” in order to restore the initial condition for an optimal air flow.
9.8 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 rince with water to inhibe the detergent rests