M23740N6-03 01/10/07 page 29
ROUTINE MAINTENANCE
BEFORE UNDERTAKING ANY SORT OF MAINTENANCE OR CLEANING, DISCONNECT THE ELECTRICAL POWER
SUPPLY TO THE UNIT, AND ENSURE THAT OTHER PEOPLE CANNOT RE-CONNECT IT .
All equipment is subjected to wear out.
The maintenance makes :
1. keeps the unit efficiency
2. the components last longer
3. keeps their efficiency and limits breakdowns
Therefore, it is fundamental to perform periodical checks: a
few controls can be performed by the user
(AUTONOMOUS MAINTENANCE) and they are mainly
cleaning activities; otherwise, controls have to be
performed by specialized technicians (INSPECTIONS).
The machine should have a log book used to keep track of
the performed controls. This will make fixing up
breakdowns easier.
Take note of the date, type of control (autonomous
maintenance, inspection or fixing up), description of the
control, actions taken and so on.
SERVICES
Parts subject to intervention:
• AIR FILTERS
• CONDENSATE DISCHARGE
• ROOM AIR TREATMENT COIL
• STRUCTURE
• EXTERNAL FANS
• DUCTING
• FANS WITH BELT DRIVE
• ELECTRIC ELEMENTS
AIR FILTERS
It is very important for the air treatment coil to be able to
offer maximum thermal exchange. Therefore, the unit must
always operate with the filters installed and clean.
Cleaning and replacement of filters are very important in
terms of health and hygiene.
Operation with clogged filters leads to a reduction in the air
flow rate, resulting in malfunctions and unit shutdowns. It
may even cause the unit to break down.
How often the filters need to be checked depends on the
quality of outdoor air, unit operating hours, dust and
number of persons in the rooms.
As a guideline, cleaning should ideally take place between
weekly and monthly. It is advisable to start with frequent
checks, and to adjust the frequency based on how much
dirt is discovered.
PLEATED FILTERS
1. Remove the closing doors
2. Carefully extract the filter so that no dust reaches the
parts below
3. Wash the filtering mattress in warm water with a
common detergent.
4. Carefully rinse it under water while preventing to pour
water in the room
5. Dry the filter
6. Reinsert it to its seat
7. Reassemble the closing doors
Old filters, washing residuals and residual parts must be
disposed of, according to the law in force.
CONDENSATE DISCHARGE
Dust and deposits could cause obstructions.
Clean the tank, pour some water into the tank and check water flows normally.
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