R420LW
5 – 1
R420LW
Service Manual
CHAPTER 5.
GENERAL INFORMATION
[1] GROUNDING INSTRUCTIONS
This oven is equipped with a three prong grounding plug. It must be plugged into a wall receptacle that is properly installed and grounded in accor-
dance with the National Electrical Code and local codes and ordinances.
In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the electric current.
WARNING:
Improper use of the grounding plug can result in a risk of electric shock.
Electrical Requirements
The electrical requirements are a 120 volt 60 Hz, AC only, 15 or 20 amp. fused electrical supply. It
is recommended that a separate circuit serving only this appliance be provided. When installing
this appliance, observe all applicable codes and ordinances. A short power-supply cord is provided
to reduce risks of becoming entangled in or tripping over a longer cord. Where a two-pronged wall-
receptacle is encountered, it is the personal responsibility and obligation of the customer to contact
a qualified electrician and have it replaced with a properly grounded three-pronged wall receptacle
or have a grounding adapter properly grounded and polarized. If the extension cord must be used,
it should be a 3-wire, 15 amp. or higher rated cord. Do not drape over a countertop or table where
it can be pulled on by children or tripped over accidentally.
CAUTION: DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE ROUND
GROUNDING PRONG FROM THIS PLUG.
[2] OVEN DIAGRAM
1. OVEN
1. One touch door open button.
Push to open door.
2. Door latches.
The oven will not operate unless the door is securely closed.
3. Removable turntable support
4. Removable turntable.
The turntable will rotate clockwise or counterclockwise.
5. Oven lamp.
It will light when oven is operating or door is opened.
6. Oven door with see-through window
7. Ventilation openings. (Rear)
8. Auto-Touch control panel.
9. Time display: Digital display, 99 minutes, 99 seconds.
10.Waveguide cover:
11.Power supply cord.
2. TOUCH CONTROL PANEL
NOTE:
Some one-touch cooking features such as “MINUTE
PLUS” are disabled after three minutes when the oven is
not in use. These features are automatically enabled when
the door is opened and closed or the STOP/ CLEAR pad is
pressed.
3-Pronged
Plug
Grounded
Receptacle Box
Grounding Pin
3-Pronged Receptacle
1
6
5
2
10
11
9
7
8
3
4
