Component Descriptions; Door Open Mechanism; Door Sensing Switch, Secondary Interlock; Switch - Electrolux EI30SM55JB Technical & Service Manual

Component Descriptions

DOOR OPEN MECHANISM

The door is opened by pulling the door handle down and
forward, referring to Figure 2-6. When the door handle is
pulled down, the latch heads are moved upward. When
the door handle is pulled forward, the latch heads are
released from the latch hooks right and left. Now, the
door will open.
Figure 2-6.

DOOR SENSING SWITCH, SECONDARY INTERLOCK

SWITCH

The secondary interlock switch is mounted in the lower
position of the latch hook. The door sensing switch in
the primary interlock system is mounted in the upper
position of the latch hook. The switches are activated by
the latch heads on the door. When the door is opened,
the switches interrupt the circuit to all components. A
cook cycle cannot take place until the door is firmly
closed, thereby activating both interlock switches. The
primary interlock system consists of the door sensing
switch and primary interlock relay located on the control
circuit board.

MONITOR SWITCH

The monitor switch is activated (the contacts opened)
by the latch head on the door while the door is closed.
The switch is intended to render the oven inoperative, by
means of blowing the monitor fuse, when the contacts of
the primary interlock relay (RY2) and secondary interlock
switch fail to open when the door is opened.
Functions:
1. When the door is opened, the monitor switch contact
close (to the ON condition) due to their being
normally closed. At this time, the primary interlock
relay (RY2), and secondary interlock switch are in
the OFF condition (contacts open) due to their being
normally open contact switches. The contacts of
relay (RY1) are in the ON condition (contacts close).
2. As the door goes to a closed position, the monitor
switch contacts are first opened and then the door
sensing switch and the secondary interlock switch
contacts close. (On opening the door, each of these
switches operate inversely.)
3. If the door is opened, and the primary interlock relay
(RY2) and secondary interlock switch contacts fail
to open, the monitor fuse blows simultaneously with
closing of the monitor switch contacts.
Before replacing a blown monitor fuse test the
door sensing switch, primary interlock relay (RY2),
relay (RY1), secondary interlock switch and monitor
switch for proper operation.
Monitor fuse and switch are replaced as an assembly.

THERMAL CUT-OUT (CAVITY)

This thermal cut-out is located on the top of the oven
cavity. It is designed to prevent damage to the oven unit
if the food in the oven catches fire due to overheating
produced by improper setting of cooking time or failure of
control unit. Under normal operation, the thermal cut-out
remains closed. However, the thermal cut-out will open at
293°F (145°C) causing the oven to shut down.
2-5
Operation