Proper cleaning and regular maintenance can help extend a kettle's service life. Here are nine maintenance tips to help foodservice operators get the biggest return on their investments in steam-jacketed kettles.

• Use non-caustic cleaners when washing and sanitizing these units each day. Refrain from using such items as chloride detergents, steel pads, wire brushes and scrapers.
• Regularly lubricate the trunion bearing and test the pressure relief valve every six months to ensure proper operation.
• Promptly replace missing screws in the control cover to ensure water tight seals and reduce the chance of water infiltrating the control box.
• For kettles with a marine latch, make sure it works properly and is not clogged with starch or other sticky food products.
• The compound gauge should be checked before use to make sure it is in the "green zone" and not in the "vent air zone".
• Replenish internal hemi water with distilled water and liqua-phase rust inhibitor or equivalent product when required.
• Change any steam seals on direct-steam kettles once a year or as required by use.
• Periodically check for any pitting or stress fissures as well as any possible leakage.
• Refrain from spraying water directly or indirectly on electrical or gas components during cleaning.