Sharp R-209FW, Руководство по обслуживанию

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R-209(IN)
R-209(W)
R-209(Y)
8
DOOR OPEN MECHANISM
The door is opened by pushing the open button on the
control panel, refer to the Figure D-1.
When the open button is pushed, the open button pushes
up the switch lever, and then the switch lever pushes up
the latch head. The latch heads are moved upward and
released from latch hook. Now the door will open.
Figure D-1. Door Open Mechanism
MONITORED LATCH SWITCH SW1 AND LATCH
SWITCH SW3
1. When the oven door is closed, the contacts (COM-NO)
must be closed.
MONITOR SWITCH SW2
1. When the oven door is closed, the contacts (COM-NC)
must be opened.
2. When the oven door is opened, the contacts (COM-
NC) must be closed.
3. If the oven door is opened and he contacts (COM-NO)
of the moniored latch switch SW1 fail to open, the fuse
F1 T6.3A blows immediately after closing the contacts
(COM-NC) of the monitor switch SW2.
CAUTION: BEFORE REPLACING A BLOWN FUSE F1
TEST MONITORED LATCH SWITCH SW1
AND MONITOR SWITCH SW2 FOR
PROPER OPERATION. (REFER TO CHAP-
TER “TEST PROCEDURE”).
FUSE F1 T6.3A
1. The fuse F1 T6.3A blows when the contacts (COM-
NO) of the monitored latch switch SW1 remain closed
with the oven door open and when the contacts (COM-
NC) of the monitor switch SW2 are closes.
2. If the wire harness or electrical components are short-
circuited, the fuse F1 T6.3A blows to prevent an electric
shock or fire hazard.
HIGH VOLTAGE FUSE F2
The high voltage fuse blows when the high voltage rectifier
or the magnetron is shorted.
TEMPERATURE FUSE TF
The temperature fuse, located on the top of the oven
cavity, is designed to prevent damage to the oven by fire.
FUNCTION OF IMPORTANT COMPONENTS
If the food load is overcooked, by either error in cook time
or defect in the control unit, the temperature fuse will open.
Under normal operation, the temperature fuse remains
closed. However, when abnormally high temperatures are
reached within the oven cavity, the temperature fuse will
open at 248˚F(120˚C), causing the oven to shut down.
TURNTABLE MOTOR TTM
The turntable motor drives the turntable roller assembly to
rotate the turntable.
FAN MOTOR FM
The fan motor drives a blade which draws external cool air.
This cool air is directed through the air vents surrounding
the magnetron and cools the magnetron. This air is chan-
nelled through the oven cavity to remove steam and
vapours given off from heating food. It is then exhausted
through the exhausting air vents at the rear of the oven
cavity.
TIMER MOTOR TM
Timer switch
1. When the timer switch is at " " position, the switch of
the timer is opened.
2. When the timer is turned clockwise from " " position,
the switch of the timer is closed.
NOISE FILTER
The noise filter assembly prevents radio frequency inter-
ference that might flow back in the power circuit.
Latch Heads
Latch Hook
Door
SW1:
Monitored
Latch Switch
SW3:
Latch Switch
SW2:
Monitor Switch
Switch Lever