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9
SERIES 3000 COOLING TOWER
Detailed Component
Maintenance Procedures
2
Cold Water Basin
As water circulating though the cooling tower is cooled, it collects in the cold water
basin and passes though the suction strainer into the system. The cold water basin
is constructed from one of the following materials of construction and the following
maintenance applies to all basin materials of construction.
• Galvanized steel
• TriArmor
®
Corrosion Protection System
• Welded Type 304 stainless steel
Water Levels
Model Number
At
Overflow
Level (in.)
At
Operating
Level (in.)
[2]
Model Number
At
Overflow
Level (in.)
At
Operating
Level (in.)
[2]
3240C, 3272C, 3299C
14 3/4
8 3/4
3872C, 3923C, 3970C
20 1/4
[1]
9 3/4
3333C, 3358C, 3379C
15 1/2
8 3/4
3918C, 3984C
21
[1]
9 3/4
3371C, 3393C, 3430C
16 1/4
8 3/4
3985C, 31056C, 31133C
21 3/4
[1]
9 3/4
3412C, 3436C
14 3/4
8 3/4
3583C, 3618C, 3676C,
3719C, 3725C
15 1/4
[1]
9 3/4
3455C, 3482C, 3527C
15 1/4
8 3/4
31132C, 31186C
19 1/4
[1]
9 3/4
3473C, 3501C
14 1/4
8 3/4
31130C, 31212C
19 7/8
[1]
9 3/4
3552C, 3604C, 3648C,
3672C
15 3/4
9 3/4
31213C, 31301C
20 1/2
[1]
9 3/4
3728C, 3781C, 3828C,
3871C
18 1/2
9 3/4
• 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 should be 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 19
for information on how to set and maintain
the basin operating level.
Table 1.
Cold Water Basin Water Levels (Measured From Inside the Cold Water Basin)
NOTES:
1.
The following materials of
construction combinations have a
basin overflow height of 18 1/2”:
- TriArmor
®
Corrosion Protection
System or stainless steel cold
water basin with either
galvanized steel or thermosetting
hybrid polymer frame
- EVERTOUGH™ Construction
2.
These are the standard operating
levels. If the connection size is
custom, contact your local BAC
representative.