Owner manual

Heat Exchanger Care and Water Quality Guide Heat Exchanger Care

• Shell–the shell is a seamless, nonferrous tube, usually made of brass. Both

ends are welded into the hubs. The shell encloses the baffles or fins very

closely to prevent any bypassing and ineffective flow areas.

• Tubes–straight, seamless, nonferrous tubes are usually made from copper, a

copper-nickel alloy or stainless steel.

• Tube sheets–brass tube sheets hold the cooling tubes in place. Tube sheets

are bonded to the inside of the hubs.

• Baffles or fins–brass baffles or fins provide a contact area for dissipating

heat. The hot hydraulic fluid flows around the baffles (fins), while the

cooling water flows through the tubes.

• Hubs–forged brass hubs are used to connect the shell with the end bonnets.

Vents and drains are located on the underside of the hubs.

• Bonnets–cast iron bonnets provide an unrestricted connection for cooling

water flow. Renewable zinc anodes may be attached in the bonnet to prevent

electrolytic damage.

Hydraulic fluid-to-air A hydraulic fluid-to-air heat exchanger is composed of a motor and fan, tubes,

fins and a cabinet.

Cutaway View of a Hydraulic Fluid-to-Air Heat Exchanger

Fluid In/Out Connection*

Motor and Fan

Tubes and Fins

Fluid In/Out

Connection*

* Hot Fluid In/Cool Fluid Out connections vary between models