Carrier 48DJE - Manual (Page 6)

INDUCED-DRAFT
BLOW ER
INDUCED-DRAFT
MOTOR
GAS VALVE
a. 48DJD005-007, 48DJE,LJE004-007,
48LJD004-007
INDUCED-DRAFT
BLOW ER
INDUCED-DRAFT
MOTOR
GAS VALVE
(HIDDEN)
REGULAR DEALER MAINTENANCE
In addition to the type of routine maintenance you might
be willing to perform, your unit should be inspected regu­
larly by a properly trained service technician. An inspec­
tion (preferably each year, but at least every other year)
should include the following:
1. Inspection of all flue product passages — including the
burner, heat exchanger, and flue collector box.
2. Inspection of all combustion- and ventilation-air
passages and openings.
3. Close inspection of all gas pipes leading to and inside
your unit.
4. Inspection, and if required, cleaning of the condenser
and evaporator coils.
5. Inspection, and if required, cleaning of the condensate
drain pan.
6. Inspection and cleaning of blower wheel housing and
motor.
7. Inspection of all supply- and retum-air ducts for leaks,
obstmctions, and insulation integrity. Any problems found
should be resolved at the time of inspection.
8. Inspection of the unit base for cracks, gaps, etc., which
may cause a hazardous condition.
9. Inspection of the unit casing for signs of deterioration.
10. Inspection of all electrical wiring and components to
assure proper connection.
11. Inspection for leaks in the refrigerant circuit. Pressure-
check to determine appropriate refrigerant charge.
12. Operational check of the unit to determine working con­
ditions. Repair or adjustment should be made at the
time of inspection.
Your servicing dealer may offer an economical service
contract that covers seasonal inspections. Ask for fur­
ther details.
Complete service instructions can be found in the unit
Installation, Start-Up and Service Instructions.
f
b. 48DJD/LJD008-014, 48DJE,LJE008-012
Fig. 5 — Heat Section Detail