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Caution, Warning – Carrier SEER 48ES User Manual

Page 29

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29

FRONT ACCESS
PANEL

A08519

Fig. 20 -- Unit Access Panel

BLOWER

HOUSING

2 SETSCREWS

(HIDDEN)

C99085

Fig. 21 -- Removal of Motor and Blower Wheel

A07680

Fig. 22 -- Burner Rack Removed

Outdoor Fan

UNIT OPERATION HAZARD
Failure to follow this caution may result in damage to unit

components.
Keep the condenser fan free from all obstructions to ensure

proper cooling operation. Never place articles on top of the

unit.

CAUTION

!

1. Remove 6 screws holding outdoor grille and motor to top

cover.

2. Turn motor/grille assembly upside down on top cover to

expose fan blade.

3. Inspect the fan blades for cracks or bends.
4. If fan needs to be removed, loosen setscrew and slide fan off

motor shaft.

5. When replacing fan blade, position blade as shown in Fig.

23.

6. Ensure that setscrew engages the flat area on the motor shaft

when tightening.

7. Replace grille.

Electrical Controls and Wiring

Inspect and check the electrical controls and wiring annually. Be

sure to turn off the electrical power to the unit.
Remove access panel to locate all the electrical controls and wiring.

Check all electrical connections for tightness. Tighten all screw

connections. If any smoky or burned connections are noticed,
disassemble the connection, clean all the parts, re--strip the wire

end and reassemble the connection properly and securely.
After inspecting the electrical controls and wiring, replace all the

panels. Start the unit, and observe at least one complete cooling

cycle to ensure proper operation. If discrepancies are observed in
operating cycle, or if a suspected malfunction has occurred, check

each

electrical

component

with

the

proper

electrical

instrumentation. Refer to the unit wiring label when making these

checks.

Refrigerant Circuit

Annually inspect all refrigerant tubing connections and the unit
base for oil accumulations. Detecting oil generally indicates a

refrigerant leak.

EXPLOSION, SAFETY AND ENVIRONMENTAL

HAZARD
Failure to follow this warning could result in personal

injury, death or property damage.
System under pressure. Relieve pressure and recover all

refrigerant before system repair or final unit disposal. Use

all service ports and open all flow--control devices,

including solenoid valves.

!

WARNING

If oil is detected or if low cooling performance is suspected,

leak--test all refrigerant tubing using an electronic leak--detector,
halide torch, or liquid--soap solution. If a refrigerant leak is

detected, refer to the Check for Refrigerant Leaks section.
If no refrigerant leaks are found and low cooling performance is

suspected, refer to the Checking and Adjusting Refrigerant Charge

section.

48E

S