Additional Maintenance; Guide For The Owner - Carrier 42 GW Serie Manual De Instalación

Maintenance
Cleaning and maintenance operations must be carried out by
specially trained personnel.
Before performing any service or maintenance operations, turn OFF
the main power switch.
Note to the installer:
To open the unit grille: turn the two screws through 90° (1/4 turn).
Filter cleaning by the installer
Clean filters in accordance with the actual operating conditions
(approximately every 6 months).
• The acrylic air filter is washable in water.
Extract the filter.
First vacuum clean the filter, then wash under tap water and finally dry.
Replace the filter in the correct position.
Prolonged shutdown:
• Before starting the air conditioner:
- clean or replace the unit air filters.
- check and clean the drain pan and the condensate discharge
of the unit.
- check tightness of electric connections.

Additional maintenance

• The electric panel is easily accessible
The inspection or replacement of internal components such as:
fan motor, coil, condensate discharge pump, float switch, electric
heater (if fitted), involve the removal of the condensate drain pan.
Condensate drain pan removal
• During the removal operation of the condensate drain pan protect
the floor with a plastic sheet under the uni
• Remove the frame-grille assembly by loosening the screws.
• Remove the four fixing brackets on the side of the drain pan and
carefully remove the condensate drain pan.
System drainage : If the system needs to be emptied, remember
that a water head always remains into the coil and it may freeze in
case temperature goes below 0° thus causing the heat exchanger
failure. The heat exchanger can be totally emptied by opening the
valves and blowing in air in each valve for 90 seconds at a minimum
pressure of 6 bar.

Guide for the owner

When installation and tests are completed instruct the Owner on the
main operating modes of the air conditioner, such as:
• Turning the unit ON and OFF.
• Changing the operation modes.
• Temperature selection.
Leave the installation manual with the owner for future use during
maintenance operations or for any other needs.
Maintenance and owner's guide
42GW 37