5. ThoroughlyapplyTotaline®environmentallysoundcoil
cleanersolutionto_dlcoilsurfacesincludingfinnedarea,
tubesheetsandcoilheaders.
6. Holdgardensprayernozzleclosetofinnedtueasandap-
plycleanerwithavertical,up-and-downmotion.Avoid
sprayinginhorizontalpatterntominimizepotentialfor
findamage.
7. Ensurecleanerthoroughlypenetratesdeepintofinned
alias,
8. Interior and exterior finned areas must be thoroughly
cleaned.
9. Finned surfaces should remain wet with cleaning solution
for 10 minutes.
10. Ensure surfaces are not allowed to dU before rinsing. Re-
applying cleaner as needed to ensure 10-minute satura-
tion is achieved.
11. Thoroughly rinse all surfaces with low velocity clean wa-
ter using downward rinsing motion of water spray nozzle.
Protect fins fi_)m damage fi'om the spray nozzle.
CONDENSATE DRAIN PAN -- Check and clean each yem at
the stmt of the cooling season.
To clean the condensate pan:
1. Disconnect condensate &ain system from side or bottom
drain connection.
2. Remove and clean trap.
3. Remove 4 screws securing condensate pan access cover
to unit. Save screws and panel.
4. Slide condensate pan out fiom unit and clean. Pan is
made of non-corrosive plastic. Use a mild cleaner to re-
move heavy deposits of dirt and grime.
5. Replace pan in unit.
6. Replace condensate pan access cover with 4 screws saved
from Step 3.
7. Re-attach and prime condensate trap.
8. Connect condensate &ainage system.
NOTE: During winter in low (subfreezing) temperature
regions, add antifreeze solutions to the drain. Protect against
contact with chil&en, pets and animals.
FILTERS -- Clean or replace at start of each heating and cool-
ing season, or more often if operating conditions require. Refer
to Table 1 for type and size.
OUTDOOR-AIR INLET SCREENS -- Clean screens with
steam or hot water and a mild detergent.
MAIN BURNER -- At the beginning of each heating season,
inspect for deterioration or blockage due to corrosion or other
causes. Observe the main burner flames. Refer to Main Burn-
e_.ssection on page 42.
FLUE GAS PASSAGEWAYS -- The flue collector box and
heat exchanger cells may be inspected by opening heat section
access door (Fig. 6), flue box covel: and main burner assembly
(Fig. 26). Refer to Main Burnel.s section on page 42 for burner
removal sequence. If cleaning is required, clean tubes with a
wire brush.
COMBUSTION-AIR BLOWER -- Clean periodically to as-
sure proper airflow and heating efficiency. Inspect blower
wheel every fall and periodically during heating season. For the
fil.st heating season, inspect blower wheel bi-monthly to deter-
mine proper cleaning frequency.
To inspect blower wheel, open heat section door Using a
flashlight, look into the flue exhaust duct to inspect. If cleaning
is lequiled, lemove motor and wheel assembly by removing
the screws holding the flue box cover to the flue box. See
Fig. 26. Remove the screws holding the inducer housing to the
inlet plate. The wheel can then be removed fiom the motor
shaft and cleaned with a detergent or solvent. Replace the
wheel onto the motor shaft in the conect position and leassem-
ble the flue cover onto the flue box.
ROLLOUT
SWITCH
HEAT EXCHANGER
SECTION
MAIN BURNER SECTION
INDUCED
f DRAFT
MOTOR
-COMBUSTION
FAN HOUSING
"MAIN GAS
VALVE
Fig. 26 -- Typical Gas Heating Section
Lubrication
COMPRESSORS- Each complessor is chmged with the
conect amount ofoil at the factoly.
The compressor is in a Puron® refrigerant system and 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. Avoid exposure of the oil to the
atmosphere. Damage to components could result.
Polyolester (POE) compressor lubricants are known to
cause long term damage to some synthetic roofing materi_ds.
Exposure, even if immediately cleaned up, may cause roofing
materials to become brittle (leading to cracking) within a
yem: When performing any service which may risk exposure of
complessor oil to the roof. take appropriate precautions to
protect roofing. Procedures which risk oil leakage include com-
pressor replacement, repairing refrigerant leaks, and replacing
refiigerant components. To plepme rooftop:
1. Cover extended roof work area with an imperrueable
plastic dropcloth or tarp. Make sure a 10 x 10 fl _uea
around the work area is covered.
2. Cover tuea in front of the unit service panel with a terry
cloth shop towel to absorb lubricant spills and prevent
run-offs. Towel will also protect dropcloth fiom tears
caused by tools or components.
3. Place terry cloth shop towel inside the unit directly under
components to be serviced to prevent spills through the
bottom of the unit.
4. Perform the required service.
5. Remove an dispose of any oil contaminated material per
loc_d codes.
INDOOR FAN SHAFT BEARINGS -- The indoor fan has
permanently sealed bearings. No field lubrication is necessary.
CONDENSER AND EVAPORATOR-FAN MOTOR
BEARINGS -- The condenser-fan and evaporator-fan
motors have permanently sealed bearings, so no field lubrica-
tion is necess_uy.
38
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