A stove fire grate, because of its continued exposure to the intense heat through direct contact with burning fuel and with its potential to be abused by over-firing, is regarded by stove manufacturers as a 'consumable' part and therefore generally receives limited coverage under the terms of the stove's warranty. Since it is considered a 'consumable' component it is important that it is routinely inspected for signs of wear and tear.
When the stove is cold remove the log bar (or fire fence) and empty the fire chamber, ash chamber and ash pan of ash or any unburned fuel. Check the fire grate for any signs of damage which may include severe warping (usually downwards), cracking or even missing parts of the individual bars in the fire grate. If your stove fire grate has an external riddling mechanism then also check that this still works effectively. Replace any damaged components. Where your stove features individual log bars or plates then these can be swopped around to even-out any potential wear and tear.
Please click here to see the various types of stove fire grates and bars that Stove Spare Parts sell