Pelgrim NF960RVS Manual page 54

Stubborn stains on enamel (pan supports, burner caps and drip tray)
Stubborn stains can best be removed with a liquid cleaning agent.
Never use scouring powder, scouring pads, sharp objects or aggressive
cleaning products.
Cleaning removable burner components
Burner parts should not be cleaned in the dishwasher. Dishwasher
detergents can corrode burner parts! The removable burner
components (including those of the wok) are best cleaned with a mild
cleaning agent and a soft cloth. For stubborn stains, soak the burner
components in hot soapy water. Never use scouring powder, scouring
pads, sharp objects or aggressive cleaning products.
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