27
Fig. 35 — Filter Removal/Replacement
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)
INDOOR SECTION
• Condenser coil cleanliness checked.
• Return air filter replacement
• Outdoor hood inlet filters cleaned
• Fan shaft bearing locking collar tightness checked
• Condensate drain checked
Heating
• Power wire connections
• Fuses ready
• Manual-reset limit switch is closed
See Tables 12 and 13 for unit specific maintenance checklists.
Seasonal Maintenance
These items should be checked at the beginning of each season (or
more often if local conditions and usage patterns dictate):
AIR CONDITIONING
• Condenser fan motor mounting bolts tightness
• Compressor mounting bolts
• Condenser fan blade positioning
• Control box cleanliness and wiring condition
• Wire terminal tightness
• Refrigerant charge level
• Evaporator coil cleaning
• Evaporator blower motor amperage
Table 12 — Outdoor Unit Maintenance Checklist
MAINTENANCE CHECKLIST
a
a. The above list may not include all maintenance items. Inspection intervals may
vary depending on climate and opening hours. Consult your Carrier dealer
about a service contact for seasonal inspections
RECOMMENDED
INTERVAL
b
b. Monthly maintenance items and outdoor unit rinsing may be performed by the
customer. All other maintenance items and all service work must be performed
by a qualified service technician. Read all warning labels.
Outdoor unit specific: Monthly Annual
Clear away debris and vegetation near unit. X
Inspect cabinet for damage. Replace
components that are damaged or severely
rusted.
X
Inspect electrical disconnect for proper
function. Repair or replace as necessary.
X
Inspect electrical wiring and connections.
Tighten loose connections. Inspect and
perform functional test of equipment as
needed to ensure proper function. Repair or
replace damaged or overheated components
and wiring.
X
Check refrigerant system subcooling and
superheat.
X
Inspect inside of unit. Clean if debris is
present.
X
Inspect condenser coil. Clean if dust, dirt, or
debris is present. Rinse unit with fresh
water.
c
c. Do not use harsh chemicals or high pressure water on coils. More frequent rins-
ing is required near a sea coast.
X
d
d. Monthly rinsing of the condenser coil is recommended if the unit is located in a
corrosive climate.
Inspect motor and fan for damage. Make
sure fans spin freely.
X
Table 13 — Indoor Unit Maintenance Checklist
MAINTENANCE CHECKLIST
a
a. The above list may not include all maintenance items. Inspection intervals may
vary depending on climate and opening hours. Consult your Carrier dealer
about a service contact for seasonal inspections
RECOMMENDED
INTERVAL
b
b. Monthly maintenance items and outdoor unit rinsing may be performed by the
customer. All other maintenance items and all service work must be performed
by a qualified service technician. Read all warning labels.
Indoor unit specific: (for accessories
refer to unit specific literature)
Monthly Annual
Inspect, clean, or replace air filter if dirty. X
Inspect and clean blower assembly (includes
blower housing, wheel, and motor).
Lubricate shaft bearings.
X
Inspect internal and external cabinet. Clean
as needed.
X
Inspect electrical disconnect for proper
function. Repair or replace as necessary.
X
Inspect electrical components, wiring, and
connections. Tighten loose connections.
Repair or replace damaged components and
wiring.
X
Inspect evaporator coil. Clean if dust, dirt, or
debris is present.
c
c. Do not use harsh chemicals or high pressure water on coils. More frequent rins-
ing is required near a sea coast.
X
Clean condensate pan, trap, and drain lines
(more frequent maintenance may be
required in humid climates - consult your
local HVAC dealer).
X
Inspect motor and fan for damage. Make
Inspect airflow system (ductwork). Check for
leaks and repair as needed.
X
To Next Page
Loading...
