Duke DSO 500, Service Manual

Page: 31 / 80

31
LINE FUSES
The line fuses, Figure 12, are in the circuit go-
ing to the heater elements and the magnetron
circuits and are not in the POWER switch cir-
cuit
Location and Access
The line fuses, Figure 12, are located in the fuse
clips on the lower right side of the oven. The right
side panel will need to be removed.
Figure 12. Line Fuses
Safety Issues
• Electrical supply of 208/240 VAC to the
control transformer when POWER switch
is in ON position
• Main POWER switch and fuses have
208/240 VAC present on the input side
whenever the oven is connected to the
input power source
Tools required
• Flat blade screwdriver to remove panels
and remove fuses from fuse clips.
Operational Testing
The line fuses must be operational for the heat-
ing elements, magnetron circuit and stirrer
motor to function. If any of these components are
operational the line fuses are in good condition.
Test Procedure
Disconnect oven from power source. Remove
fuse from fuse clip. Check continuity across
fuse.
Replacement
Install fuse into fuse clip.
COMPONENT OVERVIEW