Carrier 50ZH024-060 - Manual (Page 17)

Refrigerant Circuit — Inspect all refrigerant tubing con-
nections and the unit base for oil accumulations annually.
Detecting oil generally indicates a refrigerant leak.
If oil is detected or if low performance is suspected, leak-
test all refrigerant tubing using an electronic leak-detector,
or liquid-soap solution. If a refrigerant leak is detected, refer
to Check for Refrigerant Leaks section on page 12.
If no refrigerant leaks are found and low cooling perfor-
mance is suspected, refer to Refrigerant Charge section on
page 12.
Indoor Airflow — The indoor airflow does not require
checking unless improper performance is suspected. If a prob-
lem exists, be sure that all supply- and return-air grilles are
open and free from obstructions, and that the air filter is clean.
When necessary, refer to Indoor Airflow and Airflow Ad-
justments section on page 14 to check the system airflow.
Metering Devices — Refrigerant metering devices are
fixed orifices and are located in the inlet header to the indoor
and outdoor coils.
Liquid Line Strainers — The liquid line strainers
(to protect metering device) are made of wire mesh and are
located in the liquid lines on the inlet side of the metering
devices.
Check valves are also located in the liquid lines near the
strainers. The strainers are the larger of the two components.
Fig. 21A — Outdoor-Fan Adjustment
(Sizes 024-048)
Fig. 21B — Outdoor Fan Adjustment (Size 060)
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