Specifications

53
[ Operation Procedures ] : When door is closed
1. Initial Status: Door opened [ FIG 3]
2. Door Closed: Slider moving by door hook as
shown in [FIG 4]
3. Turn PCB power button on to enter power
and push start button.
4. PTC begins heating as power is entered to
No. 1 and 3 in [FIG 2].
5. Deformation of [UPPER BIMETAL] begins
due to PTC heating.
6. Deformation of upper bimetal moves PTC and
PTC moves blade. Here, 'omega spring' moved
'contact blade' so that terminal contact point and
blade contact point are turned on (6sec after
power impression)
[FIG 2]. Current flows in output terminal 2. Also,
'slider stop' built in with blade enters the holde of
slider and 'restrains slider while current is
flowing'. So door cannot be opened.
7. Door opening
$ When power is turned off, power of terminal 1~3 in [FIG 2] is turned off.As current impressed to PTC is
removed, 'bimetal' is cooled.
% With cooling of bimetal, PTC is returned to the original position. Also, restoration of omega spring
blade contact point is turned off.Therefore, 'slider stop restoration (40sec ~ 5min after power off)'
occurs.
& As slider restraint is cleared, door can be opened.