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Table 10 — Outdoor Unit Maintenance Checklist
MAINTENANCE CHECKLIST
Outdoor unit specific:
Clear away debris and vegetation near unit.
Inspect cabinet for damage. Replace
components that are damaged or severely
rusted.
Inspect electrical disconnect for proper
function. Repair or replace as necessary.
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.
Check refrigerant system subcooling and
superheat.
Inspect inside of unit. Clean if debris is
present.
Inspect condenser coil. Clean if dust, dirt, or
debris is present. Rinse unit with fresh
water.
c
Inspect motor and fan for damage. Make
sure fans spin freely.
NOTE(S):
a
The above list may not include all maintenance items. Inspection intervals may
vary depending on climate and opening hours. Consult your dealer about a ser-
vice contact for seasonal inspections.
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.
c
Do not use harsh chemicals or high pressure water on coils. More frequent rins-
ing is required near a sea coast.
d
Monthly rinsing of the condenser coil is recommended if the unit is located in a
corrosive climate.
Table 11 — Indoor Unit Maintenance Checklist
MAINTENANCE CHECKLIST
Indoor unit specific: (for accessories
refer to unit specific literature)
Inspect, clean, or replace air filter if dirty.
Inspect and clean blower assembly (includes
blower housing, wheel, and motor).
Lubricate shaft bearings.
Inspect internal and external cabinet. Clean
as needed.
Inspect electrical disconnect for proper
function. Repair or replace as necessary.
Inspect electrical components, wiring, and
connections. Tighten loose connections.
Repair or replace damaged components and
wiring.
Inspect evaporator coil. Clean if dust, dirt, or
debris is present.
c
Clean condensate pan, trap, and drain lines
(more frequent maintenance may be
required in humid climates - consult your
local HVAC dealer).
Inspect motor and fan for damage. Make
Inspect airflow system (ductwork). Check for
leaks and repair as needed.
NOTE(S):
a
The above list may not include all maintenance items. Inspection intervals may
vary depending on climate and opening hours. Consult your dealer about a ser-
vice contact for seasonal inspections.
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.
c
Do not use harsh chemicals or high pressure water on coils. More frequent rins-
ing is required near a sea coast.
22
RECOMMENDED
a
INTERVAL
b
Monthly
Annual
X
X
X
X
X
X
X
d
X
RECOMMENDED
a
INTERVAL
b
Monthly
Annual
X
X
X
X
X
X
X
X
Specifications subject to change without notice.
ROUTINE SYSTEM MAINTENANCE
These items should be part of a routine maintenance pro-
gram, 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
•
Coil cleanliness checked.
•
Return air filter replacement
•
Belt tension checked
•
Belt condition checked
•
Pulley alignment checked
•
Fan shaft bearing locking collar tightness checked
•
Condensate drain checked
•
Blower motor amperage
OUTDOOR SECTION
•
Fan motor mounting bolts tightness
•
Compressor mounting bolts
•
Fan blade positioning
•
Control box cleanliness and wiring condition
•
Wire terminal tightness
•
Refrigerant charge level
ECONOMIZER OR OUTSIDE AIR DAMPER
•
Inlet filters condition
•
Check damper travel (economizer)
•
Check gear and dampers for debris and dirt
SERVICE
Refrigeration System
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in damage to
equipment.
This system uses R-410A refrigerant which has higher
pressures than R-22 and other refrigerants. No other
refrigerant may be used in this system. Gauge set,
hoses, and recovery system must be designed to handle
R-410A refrigerant. If you are unsure consult the
equipment manufacturer.
COMPRESSOR OIL
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in damage to
equipment.
The compressor in an R-410A system uses a
polyolester (POE) oil. This oil is extremely hygroscopic,
meaning it absorbs water readily. POE oils can absorb
15 times as much water as other oils designed for HCFC
and CFC refrigerants. Take all necessary precautions to
avoid exposure of the oil to the atmosphere.
CHS-180-240-01SI Rev. A
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