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Table 12 — 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 13 — Indoor Unit Maintenance Checklist
MAINTENANCE CHECKLIST
Outdoor 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.
24
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.
SERVICE
Refrigeration System
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. If you are unsure consult the equipment
manufacturer.
COMPRESSOR OIL
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.
SERVICING
SYSTEMS
SYNTHETIC MATERIALS
POE (polyolester) compressor lubricants are known to
cause long term damage to some synthetic roofing materi-
als. Exposure, even if immediately cleaned up, may cause
embrittlement (leading to cracking) to occur in one year or
more. When performing any service which may risk expo-
sure of compressor oil to the roof, take appropriate precau-
tions to protect roofing. Procedures which risk oil leakage in-
clude but are not limited to compressor replacement, repair-
ing refrigerants leaks, replacing refrigerant components
such as filter drier, pressure switch, metering device, coil,
accumulator, or reversing valve.
Synthetic Roof Precautionary Procedure:
1. Cover extended roof working area with an imperme-
able polyethylene (plastic) drop cloth or tarp. Cover
an approximate 10 x 10 ft (3.3 x 3.3 m) area.
2. Cover area in front of the unit service panel with a
terry cloth shop towel to absorb lubricant spills and
prevent run-offs, and protect drop cloth from tears
caused by tools or components.
3. Place terry cloth shop towel inside unit immediately
under component(s) to be serviced and prevent lubri-
cant run-offs through the louvered openings in the
base pan.
4. Perform required service.
5. Remove and dispose of any oil contaminated mate-
rial per local codes.
LIQUID LINE FILTER DRIER
The factory-provided reversible filter drier is specifically de-
signed to operate with R-410A. Replace the filter drier with
factory-authorized components only with a filter drier with
desiccant made from 100% molecular sieve grade XH-11.
Filter drier must be replaced whenever the refrigerant sys-
tem is opened.
CAUTION
CAUTION
ON
ROOFS
CHS-072-121-01SI
WITH
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