Xylem Heat Exchanger 02014-HCF

Verify the presence of components

Inspect anodes for scale or surface coatings

Are pipe plugs used instead of anodes?

Shut off the flow of hot medium first

If circulation of cooling medium is stopped, ensure circulation of hot medium is also stopped by by-passing or other methods

Ensure equipment is not operated under conditions exceeding those specified on the nameplate

Drain all fluids to eliminate possibility of freezing and corrosion

Drain condensate from steam heaters and similar apparatus to guard against water hammer

Ensure there is no pulsation of fluids to prevent vibration, strain, and leaks

Observe interior and exterior condition for scale build-up

Check for complete stoppage of flow through tubes due to neglect

Is there a marked increase in pressure drop or reduction in performance?

Has the unit been checked for air or vapor binding?

Inspect for severe expansion strains, leaking tube joints, and damage to the heat exchanger

Clean exchangers subject to fouling or scaling periodically

Ensure tubes are free from light sludge or scale coating

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 the operation started gradually?

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

Was the unit not shocked with cold fluid when hot?

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

Inspect all tubes for erosion, corrosion, or foreign material

Inspect all anodes for excessive corrosion or scale insulation

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