Unit Arrangement And Access - Carrier 50TCQD17-D24 Service And Maintenance Instructions

UNIT ARRANGEMENT AND ACCESS

General
Fig. 1 and Fig. 2 show general unit arrangement and
access locations.
Fig. 1 - - Typical Access Panel Location (Front)
FILTER 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 of dirt and debris
S Check control box wiring condition
S Ensure wire terminals are tight
S Check refrigerant charge level
S Ensure indoor coils are clean
S Check supply blower motor amperage
Electric Heating:
S Inspect power wire connections
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 dirt and debris
Air Filters and Screens
Each unit is equipped with return air filters. If the unit has
an economizer, it also has an outside air screen. If a
manual outside air damper is added, it also has an inlet air
C10753
screen.
Each of these filters and screens will need periodic
cleaning or replacement.
Return Air Filters:
EQUIPMENT DAMAGE HAZARD
C10752
Failure to follow this CAUTION can result in
premature wear and damage to equipment.
Dirt buildup on components can cause excessive
current used resulting in motor failure.
Return Air Filters are disposable fiberglass filters. Access
to the filters is through the Filter and Indoor Coil Access
Panel located to the right of the control box. The filters
are situated on slide out racks for easy inspection and
replacement. See Fig. 1.
Removing the return air filters:
1. Remove the vertical Filter Access Panel.
2. Reach into the filter access opening and remove the
filters from the filter rack.
3. Replace filters as required with similar replacement
filters of same size.
Installing the return filters and access panel:
1. Slide the filters into the slide- - out racks.
2. Place the vertical Filter Access Panel on the unit.
3. Replace the mounting hardware attaching the panel to
the unit and tighten securely.
IMPORTANT:
WITHOUT THESE FILTERS! See CAUTION on
preceding page.
Outside Air Hood:
Outside Air
aluminum- - mesh type filters. Check filters for dirt and
debris. Remove the screens when cleaning is required.
Clean by washing with hot low- - pressure water and soft
detergent and replace all screens before restarting the unit.
Observe the flow direction arrows on the side of each
filter frame when reinstalling.
3
CAUTION
DO NOT OPERATE
Hood inlet screens are
THE UNIT
permanent