Carel humiSonic UU02, Руководство пользователя, Страница: 58 / 68

26
ENG
Direct version for room applic. +0300062IE - rel. 1.1 - 16.11.2017
10.3 Maintenance
Maintenance on the humidifier must be carried out by CAREL technical
service or other professionally qualified personnel.
Important:
before performing any operations:
•
power the unit off at the switch (off );
•
wait for all of the water to be emptied from the humidifier tank.
The fill valve is normally closed and the drain valve is normally open,
consequently, when powering down the humidifier, the unit is drained
automatically.
Note : preventive maintenance on the humidifier is recommended
to ensure optimum system performance. Maintenance includes:
•
checking tightness of the electrical connectors;
•
cleaning and visual inspection of the components;
•
checking water level and making sure there are no leaks.
Important:
•
the piezoelectric transducer is very delicate: when cleaning the inside
of the tank, make sure not to scratch it, for example with a screwdriver;
•
tighten the nuts applying the maximum allowed torque (4 ± 0.5
kg·cm). Excessive tightening torque may damage the humidifier.
10.4 Routine maintenance
Routine maintenance on humidifiers involves cleaning all the parts in
contact with the water:
1.
fill/drain lines;
2. water tank.
Maintenance intervals depend on water quality and humidifier
operating hours. The use of demineralised water minimises maintenance
requirements.
Note: it is recommended to perform routine maintenance at least
once a year, irrespective of water quality and humidifier operating hours.
It is recommended to periodically check operation of the piezoelectric
transducers, the corresponding driver boards and the fans, by carrying
out a visual inspection:
1.
make sure there a water column above each of the piezoelectric
transducers during humidifier operation;
2.
check that the LEDs on the driver boards are on and are yellow during
humidifier operation;
3.
check that the fans are running during humidifier operation.
10.5 Special maintenance and repairs
Special maintenance and repairs may involve replacement of:
1.
fill/drain solenoid valve;
2. driver board;
3.
piezoelectric transducer;
4.
fan;
5. electronic control board;
6.
power supply.
10.6 Replacing the components
To access the load/drain solenoid, remove the right side closure
A
B
Fig. 10.c
1.
loosen and remove the screw (A);
2. remove the cover (B).
Drain solenoid valve
1.
remove the electrical connectors and move the spring fasteners so
as to remove the hoses, then remove the block (D): elbow connector,
drain valve, T-connector.
Fig. 10.d
Fill solenoid valve
1. loosen and remove the screws (arrows) so as to remove the bracket (E);
Fig. 10.e
Fig. 10.f
2. remove the electrical connectors and move the spring fasteners so
as to remove the hoses, then remove the block (F): elbow connector,
fill valve, connector.