The working principle of the toaster
The toaster is mainly composed of a heating wire group, a timing circuit, a bread bracket, an electromagnet switch and a shell.
Its principle is to obtain the baking degree and color of the bread to be baked by controlling the length of time through the timing circuit, as well as the desired net effect, to the set At a certain time, the timing circuit disconnects the power supply, so that the electric buzzer has no electricity, and the bread bracket is released by non-magnetic, and the bread bounces up.
What are the common faults of toasters
Fault 1: No heat
Reasons and troubleshooting Methods:
(1) Toaster plug or socket wiring is loose or damaged. If the thread is loose, it should be tightened; if it is damaged, it should be replaced with a new component.
(2) The power fuse is burnt. The fuse can be replaced with a new one as specified in the manual, but pay attention to match the watt-hour meter.
(3) The power lead is disconnected. Should be replaced with a new line, pay attention to the line type should be consistent.
(4) The heating element is burnt out. The broken part of the electric heating alloy belt can be unraveled, and then welded by resistance welding, or a new electric heating element can be replaced.
(5) The main switch contacts are burnt out. Regrinding is required, and if the damage is severe, it must be replaced.
(6) The connecting rod of the main switch is deformed, resulting in poor contact. At this time, the connecting rod can be properly bent to restore the contact to good contact.
Trouble 2: Uneven baking
Causes and solutions:
(1) If one side of the bread has been baked browning, while the other side is still white, is caused by a set of disconnects in the heating element. At this time, the furnace shell should be disassembled and the electric heating elements or circuits on the side that cannot be baked should be checked.
(2) A new heating element next to an old element can also cause this failure, if the reflective surface inside the case is discolored, faded, or stained, or is covered with burnt particles, Slices of bread were also difficult to obtain evenly toasted. Therefore, the reflective surface in the shell should be cleaned carefully.
(3) If the components and housing are in good condition, and the humidity on the bread slices is uneven, uneven baking will also occur.
Failure 3: The frame cannot jump up
Reasons and solutions:
(1) The auxiliary heating wire of the thermostat is burnt broken and must be replaced.
(2) The contacts of the thermostat are fused and cannot be separated and need to be replaced.
(3) The lift spring is invalid or broken and needs to be replaced.
(4) The deformation of the connecting rod causes friction blocking, and the deformation should be corrected. If the function cannot be restored after calibration, it needs to be replaced.
(5) The frame of the electromagnetic relay type toaster cannot jump up due to the open circuit of the relay coil. At this time, the coil needs to be replaced for repair.
Fault 4: Bread pops out
Causes and solutions:
The buffer fails. Buffers come in many forms, such as hydraulic, air pressure, friction, and suction, and therefore need to be repaired for specific situations.
