Carrier 40MHH Owner's Manual page 10

CLEANING, MAINTENANCE AND TROUBLESHOOTING
CAUTION
!
ELECTRICAL SHOCK HAZARD
Failure to follow this caution may result in personal injury
or death.
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. Be sure to
disconnect indoor unit if on a separate switch
CAUTION
!
EQUIPMENT DAMAGE/OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper unit operation.
Operating the system with dirty air filters may damage the
indoor unit and could cause reduced cooling performance,
intermittent system operation, frost build−up on indoor coil
or blown fuses.
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, etc.
Refer to Table 1.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
The coil fins are very sharp. Use caution when cleaning.
Always wear safety protection.
Cleaning the Coil
Clean the coil at the beginning of each cooling season, or when
necessary. Use a vacuum cleaner or a long−bristle brush to avoid
damage to the coil fins.
Air Filters
Remove and clean the air filters once a month.
NOTE: If air filters show signs of excessive wear or are torn, they
must be replaced. Contact your local dealer for replacement filters.
1. The air filter is under the top air inlet grill.
2. Grip the tab on the end of the filter, lift it up, then pull it
towards yourself.
3. If your filter has a small air freshening filter, un−clip it from
the larger filter. Clean the air freshening filter with a hand−
held vacuum.
4. Clean the large air filter with warm, soapy water. Be sure
to use a mild detergent.
5. Rinse the filter with fresh water, then shake off any excess
water.
6. Dry it in a cool, dry place, and refrain from exposing it to
direct sunlight.
7. When dry, re−clip the air freshening filter to the larger filter,
then slide it back into the indoor unit.
Fig. 13 − Filter Tab
Fig. 14 − Filter Tab
Fig. 15 − Rinse the Filter
Fig. 16 − Air Freshening Filter
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
When cleaning the front panel, do not use water hotter than
105_F (40.6_C) and do not pour water onto the fan coil. Do
not use abrasive or petroleum based cleaners as they may
damage the front panel.
10
Filter Tab