OPERATION AND MAINTENANCE MANUAL
Wall Mounted 0121…0661
Monobloc Wall Mounted Unit - WMA/WMF 0121-0181-0251-0281-0331-0551-0661 - Rev. 2.0. - Date: 18-07-2000 EN
21 (32)
MAINTENANCE
REGULAR CHECKS
The following maintenance operations should be done regularly:
•
check the set values of the control and regulation devices
•
check that room conditions on the mP20/W terminal display are normal
•
check normal condensation and evaporation pressures or saturated temperatures
•
check the refrigerant charge; the sight glass should be clear (however the presence of a few bubbles is normal
•
check the correct function of the external air damper
•
check normal temperature and noise levels of compressor and fans
•
check the air filters; clean or change the filters when the dirty filter alarm comes on
•
check the flow of condensate to the drain
•
check whether the condenser is dirty, removing any obstructing material with a jet of compressed air or water
•
check that all electric terminal connections are tight
•
check that power supply voltage is within design limits.
CLEANING AND CHANGING THE AIR FILTER
Inspect the filter cartridge at least once a
month and whenever there is a blocked filter
alarm: Clean or chage the filter as necessary.
models 0121-0331
open the central front panel
models 0551…0661
open the top front panel
- remove the filter cartridge (
F
), shake it to
remove large particles then clean with a
vacuum cleaner. Change the filter if it is
blocked.
F
WM 0121…0331
F
WM 0551-0661
Fig. 6.
