Maintenance - Carrier MMK-AP0073H2UL Owner's Manual

High Wall Type
9.

Maintenance

Cleaning the parts other than the air filter involves dangerous work in high places, ask a service
person to do it.
Do not attempt to do it by yourself.
To avoid the possibility of electric shock, always turn off power to the system before performing
any cleaning or maintenance to the system. Turn off the outdoor disconnect switch located near
outdoor unit.
Operating the system with dirty filters may damage the indoor unit and could cause reduced
cooling performance.
Periodic Maintenance - periodic maintenance is recommended to ensure proper operation of the unit.
Recommended maintenance intervals may vary depending on the installation environment, e.g. dusty
zones. Refer to table below.
Periodic Maintenance
INDOOR UNIT
1
Clean Air Filter*
Clean Drain Pan
Clean indoor heat exchanger*
2
Clean fan*
Change Remote Control Batteries
OUTDOOR UNIT
Clean Outdoor heat exchanger from Outside
Clean Outdoor heat exchanger from Inside*
Blow Air Over Electric Parts*
Check Electric Connection Tightening*
2
Clean Fan Wheel*
2
Check Fan Tightening*
2
Clean Drain Pans*
*1: Increase frequency in dusty zones.
*2: Maintenance to be carried out by qualified service personal.
WARNING
EVERY MONTH
2
EVERY MONTH
2
2
2
– 24 –
EVERY 4 MONTHS
2
1
EVERY 4 MONTHS
1
Owner's Manual
EVERY YEAR
1
1
1
EVERY YEAR
1
1
1
1
1
1
EN
24-EN