Maintenance - Daikin DDC Series Installation And Maintenance Manual

MAINTENANCE

HIGH VOLTAGE!
D
ISCONNECT ALL POWER BEFORE SERVICING OR
. M
INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY
. F
BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY
,
DAMAGE PERSONAL INJURY OR DEATH
T
O PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER
,
INSTALLATION ADJUSTMENT
,
MAINTENANCE REFER TO THIS MANUAL
ASSISTANCE OR INFORMATION
SERVICE AGENCY OR THE GAS SUPPLIER
S ,
HEET METAL PARTS SCREWS
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HAVE SHARP EDGES AND IT IS NECESSARY THAT THE INSTALLER AND
SERVICE PERSONNEL EXERCISE CAUTION
Preventive maintenance is the best way to avoid unnecessary ex-
pense and inconvenience. Have this system inspected at regular
intervals by qualified service personnel, at least twice a year. Rou-
tine maintenance should cover the following items:
1. Tighten all belts, set screws, and wire connections.
2. Clean evaporator and condenser coils mechanically or with
cold water, if necessary. Usually any fouling is only matted
on the entering air face of the coil and can be removed by
brushing.
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.
WARNING
.
WARNING
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ALTERATION SERVICE OR
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OR ADDITIONAL
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CONSULT A QUALIFIED INSTALLER
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CAUTION
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CLIPS AND SIMILAR ITEMS INHERENTLY
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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 condi-
,
tions 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 maintain
the finish's original high luster. This is especially important in in-
stallations with extended periods of direct sunlight.
C O C
LEAN UTSIDE OIL
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.
C F
ONDENSER ANS
Bearings on the condenser fan motors are permanently lubricated.
No additional oiling is required.
L
UBRICATION
The fan shaft bearings and the supply fan motor have grease fit-
tings that should be lubricated during normal maintenance checks.
F P
UNCTIONAL ARTS
Refer to the unit Parts Catalog for a list of functional parts. Parts
are available from your distributor.
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CAUTION
(Q S O )
UALIFIED ERVICER NLY