Detailed Component Maintenance Procedures; Cold Water Basin - BAC FXV-0806-12D Series Operation & Maintenance Manual

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FXV, FXV3, CXVB, AND CXVT UNITS
Detailed Component
Maintenance Procedures

Cold Water Basin

The fluid (refrigerant) to be cooled (condensed) 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 Type 304 stainless steel
Water Levels
Model Number
FXV-08xx, CXVB-xxx-08xx
FXV-12xx, CXVB-xxx-12xx
FXV3-1224-xxx, FXV3-1426-xxx, CXVT-x-1224-x,
XECXVTx-1224-x,CXVT-x-2424-x, XECXVTx-2424-x
FXV3-1224-xxx, FXV3-1426-xxx, XECXVTx-1426-x,
CXVT-x-2826-x, XECXVTx-2826-x
Table 1. Cold Water Basin Water Levels (Measured from Inside the Cold Water Basin)
• 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 1.
• Check the operating water level monthly, and readjust the float when necessary to
maintain the recommended operating level.
• Consult "Water Level Control" on Page 23 for information on how to set and maintain
basin operating level.
At Overflow Level (in.) At Operating Level (in.)
13 1/2"
14 1/2"
19 1/4"
19 1/4"
8 1/4"
8"
16 1/4"
16 1/4"