Duke DSO 500 User Manual

SPEED OVEN

MODEL DSO 500

MAGNETRON ASSEMBLY REPLACEMENT

WARNING

TO AVOID THE RISK OF ELECTRICAL SHOCK, PERSONAL INJURY, OR DEATH:
DISCONNECT POWER TO THE OVEN AND DISCHARGE THE CAPACITORS

BEFORE SERVICING THE OVEN OR FOLLOWING ANY DISASSEMBLY
PROCEDURE.

1.) Disconnect power.

2.) Remove screws from rear flange of top panel, slide top panel
back approximately one inch, and lift top panel off.

3.) Carefully pull back rubber insulator and discharge capacitor.
Re-position rubber insulator. Note that the capacitors will hold
an electrical charge long after power is disconnected.

4.) Repeat step 3 for second capacitor.

5.) Remove 2 wires from the faulty magnetron and 2 wires from the
snap disc thermostat that is attached to the magnetron.

6.) With an 11/32 socket or nut driver, remove the four 8-32 hex
nuts from the base of the magnetron and lift magnetron
assembly, including anode gasket off of the waveguide.

7.) Remove the new magnetron from the box, and check that the
anode gasket is properly installed. Install gasket if not already in
place.

8.) Insert the new magnetron assembly onto the mounting studs.
Install the four 8-32 hex nuts and tighten alternately to seat
magnetron squarely onto the waveguide and provide an
electrical seal.

9.) Re-attach the magnetron and snap disc thermostat wires.

10.) Re-install top panel.

DUKE MANUFACTURING CO.

2305 N. Broadway • St. Louis, MO 63102

800.735.3853 • 314.231.1130 • 314.231.5074 Fax
www.dukemfg.com

168177