Replacing the heating unit

Wear protective gloves or use a clean cloth/paper towel while replacing the heating unit. Do not touch the heaters with your hands.
Make sure the heaters are not hot. Carry the operation out when the device is cold and switched off.
Gently grab the heater with your fingers and remove it by moving it parallelly to its slots. Do not twist it in any direction, it may cause damage to the heater’s slots.
Insert the new heater to the slot.