P.50
3. Door switch
Function:
There are three connection in the door lock, 1 and 3
provide 220V voltage to the PTC, when the door is
close and power is on, PTC will be distortional, then
push the middle spring, the points 2 and 3 connect
with spring provide power to the peripheral load
(motor, pressure switch etc). Meanwhile the plastic
bolt in the peripheral spring will insert into the door
lock channel outside and
Only when the
power is off about 2 minutes, PTC will get back. At
this time the door can be open.
Technical rated:
120V/240V, 16A, PTC
Input voltage: 253VAC
Rated current: 50mA
Start-up current:
The testing methods of door lock are as follows:
1) The contractor 2 and 3 are disconnection when the
door lock is off (if not, the door lock should be
replaced). Supply power to the contractor 1 and 3
(220VAC) 10s, and then turn off, the contractor 2
and 3 will be connection in 30 s, if not, the door
will not be locked and should be replaced.
Supply power (220VAC) to the contractor 1 and 3
10 s and then turn off, if the contractor 2 and 3 are
connection, the door lock should be replaced.
self-lock.
2.5A for max.
6.TROUBLESHOOTING
PTC
1
3
2
