Xylem Heat Exchanger 05024-SSCF

Verify the presence of components

Inspect anodes for scale or surface coatings

Are pipe plugs used instead of anodes?

Inspect pipe plugs for material softness

Ensure compliance with design specifications

Shut off flow of hot medium first

Is it necessary to stop circulation of cooling medium?

Stop circulation of hot medium if cooling medium is stopped

Drain all fluids to prevent freezing and corrosion

Drain condensate from steam heaters to prevent water hammer

Ensure no pulsation of fluids to prevent vibration and strain

Ensure all pressure is off equipment and the unit is drained before opening heads

Inspect all tubes for erosion, corrosion, or foreign material and describe findings

Inspect all anodes for excessive corrosion or scale insulation and scrape to a bright surface

Inspect filters to prevent foreign matter from entering the exchanger

Avoid blowing out heat exchangers with air if operating fluids are flammable or hazardous

Select cleaning method for heat exchangers

Use a torque wrench when replacing heads

Observe interior and exterior condition for scale build-up

Is there any noticeable scale build-up on the tubes?

Check for complete stoppage of flow through tubes due to scale

Has there been a marked increase in pressure drop?

Has there been a reduction in performance?

Has the unit been checked for air or vapor binding?

Clean the heat exchanger if fouling or scaling is observed

Describe any observed sludge or scale coating on the tubes

Open the vent connections and start to circulate the cold medium only.

Are the passages in the exchanger entirely filled with the cold fluid before closing the vents?

Introduce the hot medium gradually until all passages are filled with liquid, then close vents.

Was the unit brought up to temperature slowly?

Was hot fluid admitted to the unit gradually and not suddenly when empty or cold?

Was the unit shocked with cold fluid when hot?