Carrier 17/19EX - Manual (Page 228)

vessel. A moisture indicating sight glass is located beyond this filter to indicate the volume and
moisture in the refrigerant. If the dry-eye indicates moisture, locate the source of water
immediately by performing a thorough leak check.
Oil Reclaim Filter
The oil reclaim system has a filter on the cooler scavenging line. Replace this filter once per
year, or more often if filter condition indicates a need for more frequent replacement. Change
this filter with the cooler/condenser/compressor vessel at 0 psig (0 kPa) by transferring the
refrigerant charge to the utility vessel.
Inspect Refrigerant Float System
Perform inspection once every 5 years or when the utility vessel is opened for service.
Transfer the refrigerant into the cooler vessel, or into a storage tank. There are two floats on the
17/19EX, one on each side of the utility vessel. Remove the float access covers. Clean the
chambers and valve assembly thoroughly. Be sure that the valves move freely. Make sure that
all openings are free of obstructions. Examine the cover gaskets and replace if necessary. See
Figure 45 for a view of both floats.
Inspect Relief Valves and Piping
The relief valves on this machine protect the system against the potentially dangerous