Cleaning The Oven's Cooking Chamber - ZANOLLI TEOREMA POLIS PW Manual For Installation, Use And Maintenance

6. CLEANING
Do not use any form of liquid especially detergent because the
refractory material is porous and it cannot be rinsed to remove residue
that comes into contract with these surfaces.
Do not use clearing tools which are too pointed or abrasive because
the refractory material is fragile and could easily chip or even break.

6.3. Cleaning the oven's cooking chamber

To clean the aluminized sheet steel cooking chamber, use a soft
moistened sponge and if needs be a weak non abrasive detergent,
making sure not to let any cleaning liquids drip onto the ceramic refractory
material.
If there is a consistent amount of fat deposited on the surfaces remove it
first using a spatula.
Do not use abrasive or corrosive detergents because these will cause
the stainless steel to become opaque and will, quite quickly, remove the
protective aluminized layer on the sheet steel, at which point it will start to
rust.
Do not direct jets of water onto the equipment for clearing as these
can penetrate through to and damage the electrical system with the
consequent risk of electrocution and the equipment starting up
unexpectedly.
34 TEOREMA POLIS PW