Climma CWS 121RC, Installation, Operation And Maintenance Manual

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6- MAINTENANCE
CWS Basic 121-161-201-251
Every time the unit is operated, check that:
Before turning the unit on, check that the fresh water pressure in the circuit is bet-
ween 1,5 and 2 Bars (21-28 PSI) as indicated by the gauge on the unit. If the
pressure drops frequently, the circuit must be repaired and the leak(s) fixed as
continous topping up the pressure will dilute the antifreeze reducing the unit safety.
The antifreeze solution of the fan coil circuit must be checked at least every two
years or before if the circuit had leaks that caused a complete refilling. The solu-
tion to refill the circuit must be composed by 80% water and 20%. glycol.
Check frequently the efficiency of the sea-water circuit, inspecting the sea-water
strainer and evaluating or even measuring the sea-water flow from the outlet. We
suggest keeping available a spare seal for the sea-water pump and also one for
the fresh water pump.
Clean or even replace the air filters on each fan coil. A dirty air filter is dramatically
reducing the fan coil efficiency as it reduces the air flow.
At the beginning of the summer season, check that the condensate drain from
each fan coil is clean and discharges freely. Consider that in humid and hot days
the condensate can reach a flow of 1 litre per hour of each fan coil.
If the system is not operated for a while, we suggest to remove the back end of
each pump and turn (two or three turns are sufficient) the cooling forced-fit to the
driving shaft of the pumps.
IMPORTANT:
Reassemble and fix adequately the protective back end
after the operation.
6.1-