47
MAINTENANCE
This section discusses the Purge system maintenance requirements and procedures, and
presents basic purge troubleshooting procedures.
Periodic Maintenance
The following maintenance procedures are required to assure efficient and reliable operation
of the Purge.
WARNING
Certain servicing procedures expose you to refrigerant. To minimize the
possibility of injury, follow the safety procedures on the label and in the material safety
data sheet for the refrigerant.
Weekly
Check moisture indicators. If moist refrigerant is indicated, replace the filter -drier.
Check purge tank sight glass for free standing water. If there is free standing water
present there will be a visible line of separation between the water and the refrigerant.
Remove any free standing water from the purge tank (see "Purge Tank Service"
beginning on page 49).
Semi-Annually
Clean the air-cooled condenser coils using compressed air or coil cleaner. Clean the
coil from the fan-side.
Note: This is extremely important as a dirty coil reduces both purge efficiency and capacity.
Moisture Monitoring
When optional liquid return line filter-drier is used, a moisture indicating sight glass should be
placed downstream for monitoring the moisture content of the chiller's refrigerant.
The moisture indicator should be inspected periodically to verify the condition of the
refrigerant. Notice that a moisture indicator's sensitivity changes with temperature changes.
When the moisture content of the refrigerant exceeds the normal parts per million (“ppm”)
levels shown below, the indicator will read "wet”. A continuous "wet" reading for mor e than
three (3) days usually means that the filter -drier is saturated and need to be replaced.
Summary of Contents for Redi-Purge PRG-113-C3
Page 2: ...2 Revised Technically as of October 11 2013 1994 REDI CONTROLS INC GREENWOOD INDIANA...
Page 4: ...4...
Page 67: ...67...