Unit Arrangement And Access; Return Air Filters - Carrier 50TCQ 04 Series Service And Maintenance Instructions

UNIT ARRANGEMENT AND ACCESS

General
Fig. 1 and Fig. 2 show general unit arrangement and
access locations.
CONTROL BOX
COMPRESSORS
(D08-12 only)
Fig. 1 − Typical Access Panel Location (Front)
FILTER ACCESS
PANEL
OUTDOOR-AIR OPENING
AND INDOOR COIL
ACCESS PANEL
Fig. 2 − Typical Access Panel Locations (Rear)
Routine Maintenance
These items should be part of a routine maintenance
program, to be checked every month or two, until a
specific schedule for each can be identified for this
installation:
Quarterly Inspection (and 30 days after initial start):
S Replace return air filter
S Clean outdoor hood inlet filters
S Check belt tension
S Check belt condition
S Inspect pulley alignment
S Check fan shaft bearing locking collar tightness
S Check outdoor coil cleanliness
S Check condensate drain
Seasonal Maintenance
The following items should be checked at the beginning
of each season (or more often if local conditions and
usage patterns dictate):
Air Conditioning/Heat Pump:
S Ensure outdoor fan motor mounting bolts are tight
S Ensure compressor mounting bolts are tight
S Inspect outdoor fan blade positioning
S Ensure control box is clean
S Check control box wiring condition
S Ensure wire terminals are tight
S Check refrigerant charge level
S Ensure indoor coils are clean
INDOOR BLOWER
S Check supply blower motor amperage
ACCESS
Electric Heating:
S Inspect power wire connections
C09190 S Ensure fuses are operational
S Ensure manual−reset limit switch is closed
Economizer or Outside Air Damper
S Check inlet filters condition
S Check damper travel (economizer)
S Check gear and dampers for debris and dirt
Air Filters and Screens
Each unit is equipped with return air filters. If the unit has
an economizer, it will also have an outside air screen. If a
manual outside air damper is added, it will also have a an
inlet air screen.
COMPRESSOR
ACCESS PANEL
(04 - 07 only)
Each of these filters and screens will need to be
periodically cleaned or replaced.
C08449
Return Air Filters are disposable fiberglass filters. Access
to the filters is through the lift−out filter access panel
located on the rear side of the unit, above the indoor coil
access panel. See Fig. 2.
3

RETURN AIR FILTERS:

CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this CAUTION can result in
premature wear and damage to equipment.
DO NOT OPERATE THE UNIT WITHOUT THE
RETURN AIR FILTERS IN PLACE.
Dirt and debris build−up on components can cause
premature wear on components
component failure.
resulting in