Sharp R-21HT Service Manual page 7

Light duty commercial microwave ovens
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Electrical Requirements
The electrical requirements are a 120 volt 60 Hz, AC only,
15 amp. or more protected 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.
1. Back splash cover
2. Side splash cover
3. Oven light
4. Ceramic shelf
5. Control panel
6. Cavity face plate
7. Door latch openings
8. Door latches
9. Door hinges
10.Door seals and sealing surfaces
11.Door handle
12.Oven door with see-through
window
1. Digital Readout
2. DOUBLE QUANTITY pad
3. EXPRESS DEFROST pad
4. Ten number pads for time
and memory programming
5. SELECTATIME pad
6. STOP/CLEAR pad; touch to
stop operation of oven and
clear remaining heating time
7. SELECATAPOWER pad for
setting variable power level
(R-21HT only)
8. START pad; touch to operate
oven after door is closed and
time is set
9. SET pad for setting memory
10.CHECK pad for checking
memory
11.SIGNAL pad for setting signal
sound
OVEN DIAGRAM
12
9
1
11
4
8
10
13.Air ventilation cover and openings
, k .Power supply cord
15.Air intake openings
16.Outer case cabinet
TOUCH CONTROL PANEL
R-21HT
ON
DEF
NO. X2 CHECK
2
5
7
9
10
3-Pronged Plug
Grounding Pin
3-Pronged Receptacle
3
2
15
5
6
7
R-21HV
1
3
2
4
6
8
5
11
9
10
5
Grounded
Receptacle Box
14
13
ON
DEF
NO. X2 CHECK
R-21HT
R-21HV
16
1
3
4
6
8
11

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