12
HXV HYBRID COOLER
Detailed Component
Maintenance Procedures
2
Cold Water Basin
The process fluid to be cooled is circulated inside the tubes of the unit’s heat exchanger.
Heat flows from the process fluid through the coil to the spray water outside which is
cascading over the tubes. The spray water collects in the cold water basin, passes through
the suction strainer and is pumped back to the distribution system.The cold water basin is
constructed from one of the following materials of construction:
• Galvanized steel
• TriArmor
®
Corrosion Protection System
• Welded stainless steel (Type 304 or 316)
Water Levels
• The operating water level in the cold water basin will vary with system thermal load
(evaporation rate), the bleed rate employed, and the make-up water supply pressure.
• The make-up valve controls the operating level, which is maintained at the levels
shown in
Table 2.
• Check the operating water level monthly, and readjust the float when necessary to
maintain the recommended operating level.
• Consult “Water Level Control” on
for information on how to set and maintain
basin operating level.
Inspection & Maintenance
• At least quarterly inspect the cold water basin, and remove any trash or debris
accumulated in basin or on the strainer. If sediment has accumulated in the cold
water basin, drain, clean and flush the cold water basin with fresh water. This will
remove sediment which can collect in the basin during operation. If not removed,
sediment can become corrosive and cause deterioration of the protective finish of
metallic basins.
– When flushing the basin, leave the strainer in place to prevent the debris from re-
entering the system.
– Remove the strainer after the basin has been flushed.
– Clean and replace the strainer before refilling the basin with fresh water.
• Adjust the float to maintain the design operating level. See
Table 2.
CAUTION:
Openings and/or
submerged obstructions may exist
in the bottom of the cold water
basin. Use caution when walking
inside this equipment.
Table 2.
Water Levels
Model Number
At Overflow Level (in.)
At Operating Level (in.)
HXV-1212 and HXV-1218
14.5”
8”
