Additional Maintenance; Filter Cleaning; Prolonged Shutdown; Guide For The Owner - Carrier 42 GW Installationsanweisung

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.
To open the unit grille: (See fig. 48).
Turn the two screws through 90° (1/4 turn).

Filter cleaning

Clean filters in accordance with the actual operating conditions
(approximately every 6 months).
• The acrylic air filter is washable in water.
Extract the filter
(vedi fig. 49).
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.
34 42 GW
Maintenance and owner's guide