Scheduled Maintenance - Daikin DCG Series Service Instructions Manual

SCHEDULED MAINTENANCE

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
,
HAVE SHARP EDGES AND IT IS NECESSARY THAT THE INSTALLER AND
SERVICE PERSONNEL EXERCISE CAUTION
Preventive maintenance is the best way to avoid unnecessary
expense and inconvenience. Have this system inspected at
regular intervals by qualified service personnel, at least twice
a year. Routine 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 Infor-
mation Manual).
14. Check condenser fans and tighten set screws.
40
WARNING
.
WARNING
,
ALTERATION SERVICE OR
. F
OR ADDITIONAL
,
CONSULT A QUALIFIED INSTALLER
.
CAUTION
,
CLIPS AND SIMILAR ITEMS INHERENTLY
.
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 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
Use a fine grade automotive wax on the cabinet finish to
maintain the finish's original high luster. This is especially
important in installations with extended periods of direct
sunlight.
C O C
LEAN UTSIDE
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.
A MCHX C
LUMINUM
For units equipped with an aluminum micro channel heat
exchanger (MCHX), the safest way to clean the MCHX is to
simply flush the MCHX with water.
This cleaning practice is the only recommended cleaning
method for aluminum MCHX's.
It has been determined that many coil cleaners and drain pan
tablets contain corrosive chemicals that can be harmful to
aluminum MCHX's . Even a one time application of these
corrosive chemicals can cause premature aluminum MCHX
failure. Any cleaners that contain corrosive chemicals
including, but not limited to, chlorine and hydroxides, should
not be used.
C A
ONDENSER ND
Bearings on the condenser fan motors and the combustion
fan motor are permanently lubricated. No additional oiling is
required.
CAUTION
AINTENANCE
(Q S
OIL UALIFIED ERVICER
(Q S
LEANING UALIFIED
I D M
NDUCED RAFT OTORS
O )
NLY
O )
ERVICER NLY