HygroMatik WL-ROL 160-1200 Series, Руководство пользователя

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Page 34
9.3 Routine maintenance
9.3.1 Change prefilter
The HygroMatik ROL units are equipped with
two different pre-filters.
The CB-EC carbon filter (K) is used to
reduce the chlorine content in the feed water.
The presence of chlorine in the water may
irreversibly damage the membrane. The car-
bon filter works by chemical reaction, combin-
ing and absorbing the chlorine molecules.
Consequently, its performance will decline
over time.
The CB-EC cartridge needs to be replaced:
• every four months if the chlorine content
in the feed water is less than 0.1 ppm.
• every two months if the chlorine content
in the feed water is between 0.1 ppm
and 0.2 ppm.
The CPP micron filter (J) traps impurities
around 5 µm in size. The filter works mechan-
ically, letting the feed water fl ow through a fil-
tering mesh. It is normal for the filter to
become blocked over time, letting less water
through and increasing the pressure drop.
The CPP cartridge needs to be replaced
when the system feed water pressure (after
having passed through the inlet filter car-
tridges) is less than 1 bar during normal oper-
ation (pressure read on pressure gauge
PI01).
Before replacing the prefilter, check
• that the WL-ROL system is switched off
• the inlet valve is closed and there is no
pressure on the water line.
» Remove the pre-filter with suitable
tools.
» Remove the old filter cartridge and
clean the inlet.
» Replace the O-ring if necessary.
» Moisten the new O-ring and insert it.
» Insert a new filter cartridge.
» Mount the pre-filter with suitable
tools.
» Open the water supply and vent the
filters via the screw in the upper part
of the membrane container.
9.3.2 Filling of the antiscalant canis-
ter
The appropriately dosed antiscalant prevents
lime deposits on the membranes. The filling
level of the antiscalant canister must be con-
stantly monitored. The consumption of the
antiscalant mixture depends on the permeate
production and the settings of the dosing
pump.The reverse osmosis plant cannot work
without antiscalant or softening, because oth-
erwise the membranes would be irreversibly
damaged. For this reason, the electronic con-
trol stops operation and activates an alarm as
soon as it recognizes a low level in the anti-
scalant canister. To prevent this alarm and the
following production stop, check the filling
level of the canister regularly and refill it in
time.
9.3.3 Replacing the UV lamp
The UV lamp has a limited operating life. The
following intervals are recommended for
replacement (whichever comes first):
• 9000 operating hours
• one year
9.3.4 Reset maintenance counter
Reset the maintenance hour counter in menu
item 13 as described in the chapter device
control.
J
L
K