Daikin DCG Series Installation Instructions Manual page 23

3. Lubricate motor bearings.
4. Align or replace belts as needed.
5. Replace filters as needed (see below).
6. Check for blockage of condensate drain.
7. Check power and control voltages.
8. Check running amperage.
9. Check operating temperatures and pressures.
10. Check and adjust temperature and pressure controls.
11. Check and adjust damper linkages.
12. Check operation of all safety controls.
13. Examine gas furnaces (see below and the User's
Information Manual).
14. Check condenser fans and tighten set screws.
F
IlterS
T
O PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF EQUIPMENT
EFFICIENCY OR EQUIPMENT DAMAGE DUE TO DUST AND LINT BUILD UP
,
ON INTERNAL PARTS NEVER OPERATE UNIT WITHOUT AN AIR FILTER
INSTALLED IN THE RETURN AIR SYSTEM
Every application may require a different frequency of replace-
ment of dirty filters. Filters must be replaced at least every
three (3) months during operating seasons.
Dirty filters are the most common cause of inadequate heating
or cooling performance. Filter inspection should be made at
least every two months; more often if necessary because of
local conditions and usage.
Dirty throwaway filters should be discarded and replaced with
a new, clean filter.
Disposable return air filters are supplied with this unit. See the
unit Specification Sheet or Technical Manual for the correct
size and part number. To remove the filters, remove the filter
access panel on return side of the unit.
C F m
AbINet INISh AINteNANCe
Use a fine grade automotive wax on the cabinet finish to main-
tain the finish's original high luster. This is especially important
in installations with extended periods of direct sunlight.
Condenser and Induced Draft Motors
Bearings on the condenser fan motors and the combustion
fan motor are permanently lubricated. No additional oiling is
required.
Lubrication
The fan shaft bearings and the supply fan motor have grease
fittings that should be lubricated during normal maintenance
checks.
Clean Outside Coil (Qualified Servicer Only)
The coil with the outside air flowing over it should be inspected
annually and cleaned as frequently as necessary to keep the
finned areas free of lint, hair and debris.
CAUTION
.
Flame Sensor (Qualified Servicer Only)
A drop in the flame current can be caused by a nearly invisi-
ble coating on the flame sensor. This coating, created by the
fuel or combustion air supply, can be removed by carefully
cleaning the flame sensor with steel wool.
NOTE: After cleaning, the microamp signal should be stable
and in the range of 4 - 6 microamps DC.
Flue Passages (Qualified Servicer Only)
At the start of each heating season, inspect and, if necessary,
clean the unit flue passage.
Inspection & Cleaning
All flue product carrying areas of the furnace, its vent system,
and main burners should be examined by a qualified service
agency before the start of each heating season. This exam-
ination is necessary for continued safe operation. Particular
attention should be given to deterioration from corrosion
or other sources. This examination is accomplished in the
following manner.
1. Disconnect power to the unit and remove furnace
section access panel.
2. Remove burner assembly:
a. Disconnect the three wires from the gas valve after
noting which wires are connected to each terminal.
b. Disconnect wires from the flame rod and ignition
electrode.
c. Disconnect the gas piping at the union.
d. The entire burner assembly can now be removed
from the unit.
NOTE: Use all screws that were removed; they are necessary
for safe and proper operation of the unit.
3. Inspect and periodically clean the vent outlet (bird
screen) on the access panel.
NOTE: Periodic observation of the flame and a log of C02
measurements are recommended. This will aid in determining
whether the furnace is operating efficiently or if the furnace
requires cleaning.
Flames should be stable, soft and blue (dust may cause
orange tips but must not be yellow). The flames must extend
directly outward from the burner without curling, floating or
lifting off.
23
BURNER FLAME