Sterling A0552321 Functional Description, Models Covered in This Manual, General Description

Chapter 2: Functional Description

2-1 Models Covered in This Manual

This manual covers many models of cooling tower pump tanks and chilled water pump tanks with operating capacities of 100 to 6,125 gallons (378 to 23,183 liters). Pump tanks are designed, specified, and engineered to meet the needs of the process specified at the time of purchase. Model numbers are listed on the serial tag.

Model numbers start with a CT or CW to describe cooling tower or chilled water tank configurations. The number following is the approximate capacity up to the overflow of the tank well(s) and a D at the end indicates a dual well configuration. Additional numbers are added to signify pump horsepower. For example, a CT1600D-20-20-10 pump tank is a cooling tower tank, 1,615 gallon (6,113 liter) capacity to its overflow, has dual wells, a 20 hp process pump, a 20 hp dual standby pump and a 10 hp recirculation pump.

A model number followed by –Qis specially-constructed, and the information in this manual may not apply. Make sure you know the model and serial number of your equipment before contacting the manufacturer for parts or service.

2-2 General Description

Single well pump tanks are reservoirs for chilled water and tower cooling water processes. Process pump(s) deliver water through the chiller or cooling tower as well as through the process. Dual well tanks have re-circulation pump(s) to deliver water from the hot side to the chiller or tower. The water then returns to the cold side, where process pump(s) deliver cooled water directly to process.

Standby pumps may be used as backups for both process and re-circulation during service or maintenance procedures. Manifolding options provide ease of connection to process and can ease the transition to standby pumps.

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