Merrychef Mealstream 400 Series User manual

Page 1400 Series Ovens 32Z3769 Issue 1
CAUTION MICROWAVE EMISSIONS
DO NOT BECOME EXPOSED TO EMISSIONS FROM THE MICROWAVE
GENERATOR OR PARTS CONDUCTING MICROWAVE ENERGY
SERVICE MANUAL
Mealstream 400
SERVICE MANUAL
For all 400 Series models manufactured from February 2009
Part No. 32Z3769 Issue No. 1
SERIES
Merrychef

Page 2400 Series Ovens 32Z3769 Issue 1
Merrychef Limited,
Station Road West,
Ash Vale, Aldershot
Hampshire GU12 5XA
United Kingdom
Tel: [phone] Fax: [phone]
Internet address: http://www.merrychef.com
E-mail: [e-mail] or [e-mail]
Table of Contents
Safety Code ...................................................................................................3
Product Specifications ...................................................................................4
Installation Instructions ..................................................................................5
Electrical Installation ......................................................................................6
Error Codes and Diagnostics.........................................................................7
Main Features................................................................................................8
Electronic Controls.........................................................................................9
Power Output Testing to EN 60335-2-90.....................................................10
Power Transformer Test ..............................................................................10
High Voltage Capacitor Test........................................................................11
High Voltage Rectifier Test ..........................................................................11
Magnetron Test............................................................................................11
Door Interlock Operation........................................................................ 12-14
Casework.....................................................................................................15
Door Mechanism..........................................................................................16
Oven Cavity Components & Hot Air System ...............................................17
Oven Door Assembly ...................................................................................18
Door Interlock RHS, Magnetron & Stirrer motor ..........................................19
Principal components LHS & Rear View .....................................................20
Principal components RHS 1: Models _EE5, _XE5 [CD2] ..........................21
Principal components RHS 2: Models _EE5, _XE5 [CD2] ..........................22
Principal components RHS 3: Models _XX5, _XX52...................................23
Input Wiring, Filters and Fuses 1 .................................................................24
Input Wiring, Filters and Fuses 2 .................................................................25
Control Panel 1: Electronic Controls............................................................26
Control Panel 2: Membrane Panel circuit ....................................................27
Control Panel 3: Manual Control assembly .................................................28
Part No. Identification ........................................................................... 29-30
Appendix 1 MenuKey Download Procedure ................................................31
Appendix 2 Cleaning Procedure ..................................................................32
Recommended Parts List (Spares)........................................................34334
Circuit Diagrams .................................................................................... 35-38
Merrychef and MenuKey™ are registered Trademarks of Merrychef Ltd.
For Service contact:

Page 3400 Series Ovens 32Z3769 Issue 1
This manual is designed to assist engineers who have been on a recognised product familiarisation
and training course run by Merrychef Limited. It has been prepared to offer technical guidance for the
Merrychef Mealstream 400 range of Combination Microwave Ovens.
Please remember that it is wiser not to attempt a service task if you are unsure of being able to
complete it competently, quickly, and above all safely.
To avoid injury to yourself, and to protect the appliance from possible damage, please follow this
Safety Code when servicing these ovens.
Before attempting to repair the oven, check it for microwave leakage.
Check that the oven is not emitting microwaves, even when supposedly not
in operation.
Check that the oven is not operating continuously, whether the display
indicates cooking or not.
Always discharge the HT capacitors before working on the oven using a
suitably insulated 10 MΩResistor
Before removing the rear cover from the oven ensure you do the following:
• Switch off the mains supply and remove the plug from the wall socket.
or
• If the oven is hard wired, ensure that the power is turned off at the isolator switch.
Note: the On/Off switch on the oven is not adequate protection against electric shock, as it does
not isolate all of the internal wiring from the Electrical Supply.
Upon completion of a service on a Mealstream 401/403 oven, or before reconnecting the appliance
to the mains supply for testing, check all of the following points:
• All internal electrical connections are correct.
• All wiring insulation is correct and is not touching a sharp edge.
• All Earth connections are electrically and mechanically secure.
• All four door safety interlocks are secure and mechanically sound.
• The door operation is smooth, and the arms run freely in the slots.
• The door activates all four of the door interlock switches in the correct order.
• All fuse-holder safety covers are correctly fitted.
• The temperature sensor is correctly connected to the Power PCB.
Before finishing the service call, recheck the following points:
• All of the electronics are functioning correctly, and all of the touch pads are working.
• The turntable is rotating correctly.
• The power output of the oven is correct (see pages 12 & 13 ).
• Microwave emission is below permissible limit - 5 mW/cm² (see BS EN 60335-2-90).
• Oven has correct 50mm air gap all round and 150mm above.
Air flow should not be restricted.
SAFETY CODE

Page 4400 Series Ovens 32Z3769 Issue 1
Power
Requirements
See RATING PLATE on rear of oven
Power Output
(IEC 705)
Microwave 100%
Convection
Combination
700W (_EE, _XE)
3000W (_XX5 )
700W + 1500W ( _EE )
700W + 3000W ( _XE )
1000W + 3000W ( _XX5 )
External
Dimensions
Height
Width
Depth
530 mm (Plus 150 mm minimum clearance above)
550 mm (Plus 50 mm minimum clearance each side)
575 mm (Plus 50 mm clearance behind)
Internal
Dimensions
Height
Width
Depth
Turntable
Capacity
315 mm
330 mm
330 mm
300 mm Diameter
34.3 litres
Weight Nett
Gross packed
All models except XX5 45kg, XX5 55kg
All models except XX5 58kg, XX5 68kg
Construction Cavity
Casework
Stainless Steel
304 Stainless Steel
Anodised Aluminium Extrusions
Settings Microwave
Temperature
Timer
100%,75%,50%,25%, Convection only
Off, 175°C, 200°C, 225°C, 250°C, 275°C
Up to 30 minutes
Up to 3 cooking stages of up to 30 minutes each
(Programmed)
Model No.: 1003 + Voltage + Frequency + Current + Controls
Model
prefix Voltage Frequency Current Control Type
2= 220-230V a.c.
4= 230-240V a.c.
5= 50 Hz
6= 60 Hz
EE = 13A 5 =
Series 5
controls
1003
XE = 30A
XX = 30A
Supply
Phase
2=
Twin
Phase
MenuKey
MK
Catalytic
converter*
C
ELECTRONIC CONTROLS: ( EC401 & EC403 models )
Model No.: 1003 + Voltage + Frequency + Current
Model prefix Voltage Frequency Current
1003
2= 220-230V a.c.
4 = 230-240V a.c.
5 = 50 Hz
6 = 60 Hz
CD2 = 13amp
XD2 = 30amp
MANUAL CONTROLS ( CD & XD models )
For example: 100345XE52MK
230-240V, 50Hz, 30A, Series 5 Controls, Twin Phase, MenuKey
Product specifications: Mealstream 401 & 403 models
+ Phase + MenuKey + Catalytic converter
* A Catalytic converter is fitted to Mealstream 403 models only

Page 5400 Series Ovens 32Z3769 Issue 1
Positioning the Oven
In order to maintain adequate ventilation for air intake and exhaust, and to allow access for
cleaning the air filters, you must allow a minimum of 50mm(2 inches) clearance at the sides
and rear of the oven, and at least 150mm above.
Air intake temperature should not exceed 35°C (95°F).
Excessive temperature will lead to reduced operating duty cycle or premature ageing of
internal components.
NEVER Install an oven above fryers, grills, griddles or any other major heat source.
NEVER Stack machines on top of each other - always use a double stand.
ALWAYS Place containers in the cavity carefully - impact damage may chip the
vitreous enamel coating.
Installation instructions

Page 6400 Series Ovens 32Z3769 Issue 1
Models 1003__XE52, 1003__XX52
WARNING All models ( 30A ) must be connected to a separate electrical supply rated at
30 Amps by a qualified and approved electrician. A suitable 30 amp rated
isolating switch with a 3mm contact gap on both poles should be fitted for each
oven installed.
Establishments with standard ( Type ‘B’ ) circuit breakers are sensitive to ‘surges’ which occur
on switching on freezers, refrigerators and other catering equipment, including microwave
ovens. Because of this, we strongly recommend that a separate Type ‘C’ circuit breaker
( designed specifically for this type of equipment ) must be fitted. An individual, suitably rated
circuit breaker should be fitted for each oven installed.
TWIN PHASE
The Mealstream 401 oven Twin Phase models
should be connected as shown in Diagram 2.
The Circuit Breaker should be rated at 20A per phase
(TypeC).
Electrical installation:
WARNING: This appliance must be earthed.
Failure to do so may result in electric shock and death
Where an approved and fitted moulded plug is
supplied we strongly recommend that this plug is
never removed.
However certain establishments may require a
different plug to be fitted. In this case, the wiring
instructions shown should be observed.
Models 1003__EE5, 1003__CD2
The power outlet used must be individually fused. It
is essential that the socket is properly installed and
earthed. It should be fed from a circuit which is
suitable for high power electrical appliances and it is
important that this circuit is not overloaded.
Models 1003__XE5, 1003__XD, 1003__XX5
When supplied, single phase models are fitted with a
Blue 32Amp Plug approved to BS4343. Wiring cable
colours as shown in Diagram 1
The Circuit Breaker should be rated at 45A (TypeC).
Diagram 1
Diagram 2
Simplified loading Diagram

Page 7400 Series Ovens 32Z3769 Issue 1
Error codes and diagnostics
Electronic Control Models
The control panel will identify some of the most common problems by flashing an error
message code in the time display window.
Error Message Possible Cause Service
1
2
Door not fully shut
Possible electrical fault
Close door fully.
Check Microswitch Door Circuit
Check Microswitch Connection to PCB
Check Ribbon Cable
Check Relay PCB & Logic PCB
1
2
3
4
5
No time has been set
Invalid time has been set
Invalid program has been set
Number pad failure
Memory Failure running a Program
Set a time
Set a valid time
Use call-back to check program
(Menukey: no key downloaded)
Membrane key short circuit
Re-Program Pad,
if fault repeats replace Logic PCB
1 Oven is not at correct temperature
to start program
Allow oven to reach correct
Programmed temperature
1 MenuKey removed before the
download is complete
or the process has been
interrupted
Switch oven off and begin the MenuKey
download again
1 Magnetron overheated Air inlet on rear of machine being obstructed.
High air inlet temperature.
Slow running cooling fan, jammed turntable or
broken gearbox
(cooling fan also drives turntable _XE5 models)
Faulty magnetron overheat ‘stat or associated
wiring.
1 Jumper installed incorrectly on
PCB logic board
Check Jumper position
1
2
Magnetron has overheated but
has now recovered
Internal diagnostic fault
Check that magnetron cooling fan and turntable
are working correctly
Check installation, air inlet temperature and air
filters
1 Oven control area is overheating Check air filters.
Check axial fan
Check installation for hot air intake
EPS= External Program System
Error Light Operation
The “Air Filter Blocked” light and “Service” light are triggered by the internal circuitry. If the magnetron
overheats, the error code “E:7” or “E:8” is displayed on the front panel, and both the “Air Filter Blocked”
and the “Service” indicators will light. Once the magnetron has cooled sufficiently to allow the oven to
restart, the “Service” light will remain illuminated until the oven is turned off.
This fault may have been triggered by one of the following causes:
- Air inlet on rear of machine being obstructed.
- High air inlet temperature.
- Slow running cooling fan, jammed turntable or broken gearbox
(note: cooling fan also drives turntable on EE5, CD2 and XE5 models).
- Faulty magnetron overheat ‘stat or associated wiring.
Note that the customer may not have noticed that the oven displayed “E:7” or “E:8”, and so the
reported fault may be misleading.
[Service]
[Air Filter blocked]

Page 8400 Series Ovens 32Z3769 Issue 1
b VENTS
c TRAY HANDLE RESTS
There is one on each side of the oven for
convenient storage of the tray handle.
d BAFFLE PLATE
Forms the inside rear of the oven and covers the
hot air circulation fan. Removable for cleaning by
unscrewing the four wing nuts which hold it in
place. This must be cleaned on a regular basis,
and kept free of debris.
CATALYTIC CONVERTOR
Allows extraction free cooking. Should be
removed regularly for cleaning. ( Do not spray/
put caustic cleaner directly into the catalytic
converter as this will cause permanent damage )
e RUNNERS
These mounted on each side of the oven cavity
to support the rectangular racks or oven trays,
and are for use in CONVECTION MODE ONLY.
f HOT AIR FAN
Situated behind the baffle plate, and circulates
the hot air through the baffle plate, over the
heating element, and around the edge of the
baffle plate back into the cavity.
g OVEN CAVITY
The oven cavity is stainless steel. It must be kept
clean See CLEANING.
h TURNTABLE TRAY
The vitreous enamelled turntable tray fits onto the
turntable disc in the bottom of the oven cavity,
and rotates during cooking to ensure an even
distribution of microwave energy so that the food
is cooked evenly.
j RATING PLATE
The rating plate is situated on the rear of the
oven, and states the Model, Serial Number,
Electrical Ratings and Manufacturers Tel no.
k DOOR
The door consists of a thermally insulated inner
section, and an additional air gap provided by a
twin skinned door front to lower the surface
temperature.
l ON/OFF SWITCH
This is used to turn the oven On or Off.
IT DOES NOT ISOLATE INTERNAL WIRING
FROM THE ELECTRICAL SUPPLY.
n ELECTRICAL SUPPLY LEAD
p AIR FILTER
Main intake for cooling air for internal
components. Must be clear of obstructions.
q MenuKey
Main features
b
c
d
e
f
g
h
j
k
l
m
p
n
q
rear view of Oven

Page 9400 Series Ovens 32Z3769 Issue 1
Electronic controls:
a Stage LED's
b Service Indicator
c Air Filter Block Indicator
e Program Display
f Temperature Set Pads
g Time / Program Number Pads
h Cancel/ Callback Pad
i Program Pad
j Convection Pad
k Microwave power Pads
l On/Off switch
m MenuKey socket
i
j
a
b
c
e
f
g
h
k
l m

Page 10400 Series Ovens 32Z3769 Issue 1
Procedure B - Simplified Power Output Test for Field Service Use
You will need:
A thermometer capable of reading to ±0.1°C.
A Polypropylene tray approximately 200 mm x 200 mm.
A measuring jug.
A calculator.
Water which is at a temperature of 10°C ± 2°C.
1 Measure 1 litre of cold water into the tray using the measuring jug.
2 Measure the water temperature, and record it as T[s].
3 Place the tray on the turntable in the oven and close the door.
4 Turn the oven on.
5 Set the timer to 1:02. ( For Manual controls use a stopwatch set to 1 minute 2 seconds )
6 Press the “100%” power pad.
7 When the oven bleeps, open the door and remove the tray.
8 Stir the water thoroughly, and measure its temperature. Record this as T[e].
Calculation:
1 T[r] = T[e] - T[s].
2 Power = 70 x T[r]. Power is in Watts.
The power given by the above test should be within ±10% of the rated power.
Procedure C - Power Transformer Test
You will need:
A Digital Multi-meter (D.M.M.)
A Megger or similar resistance meter using 500V d.c.
1 Isolate the oven from the mains supply.
WARNING: High voltages and large currents are present at the secondary winding and filament
winding of the Power Transformer. It is very dangerous to work near this part when the
oven is on. NEVER make any voltage measurements at the High Voltage circuits,
including the magnetron filament.
WARNING: Even when the oven is not cooking, the Power Transformer has High Voltages present
because of the Soft Start circuit. Isolate the oven before testing.
a Mains winding between tags Approx. 1.3 Ω
b High Voltage winding Approx. 50-100 Ω
c Filament winding
between terminals
Less than 1 Ω
Primary winding and chassis Pass if over 10 MΩ
Filament winding and chassis Pass if over 10 MΩ
2 Ensure that the High Voltage Capacitor is discharged before commencing work.
3 Remove all connections from the Power Transformer.
4 Using a D.M.M., check the continuity of the windings. Results should be as follows:
5 Using a Megger, test the insulation resistance between:
One end of the High Voltage winding is connected to the
chassis, so this is not tested.
a
c b
Procedure A - Power Output Test In accordance
with BS EN 60335-2-90 is not used in the field please
Engineers Procedure B.

Page 11400 Series Ovens 32Z3769 Issue 1
Procedure E - High Voltage Rectifier Test
You will need:
A Megger or similar resistance meter using 500V d.c.
WARNING: High voltages and large currents are present at the High Voltage Rectifier. It is very
dangerous to work near this part when the oven is on. NEVER make any voltage
measurements at the High Voltage circuits, including the magnetron filament .
WARNING: Even when the oven is not cooking, the High Voltage Rectifier has High Voltages
present because of the Soft Start circuit. Isolate the oven before testing.
Procedure D - High Voltage Capacitor Test
You will need: A Digital Multi-meter (D.M.M.)
A Megger or similar resistance meter using 500V d.c.
5. Using a Megger, test the insulation resistance between the
terminals and the case.
1. Isolate the oven from the mains supply.
2. Ensure that the High Voltage Capacitor is discharged before
commencing work.
3. Remove all connections from the High Voltage Capacitor.
4. Using a D.M.M., check for continuity between the terminals &
WARNING: High voltages and large currents are present at the High Voltage Capacitor. It is very
dangerous to work near this part when the oven is on. NEVER make any voltage
measurements at the High Voltage circuits, including the magnetron filament .
WARNING: Even when the oven is not cooking, the High Voltage Capacitor has High Voltages
present because of the Soft Start circuit. Isolate the oven before testing.
Between Terminals Pass if approximately 10 MΩ
Between Terminals and Case Pass if open circuit
Between Terminals and Case Pass if over 100 MΩ
Procedure F - Magnetron Test
You will need:
A Megger or similar resistance meter using 500V d.c.
A Magnetron can be tested for an open filament or a short circuit
by carrying out a continuity check.
1. Isolate the oven from the mains supply.
2. Ensure that the High Voltage Capacitor is discharged before
commencing work.
3. Remove all connections from the Magnetron.
4. A continuity check across the Filament terminals should be 1ohm or less
5. A continuity check between each filament terminal and the
metal outer should read open.
1. Isolate the oven from the mains supply.
2. Ensure that the High Voltage Capacitor is
discharged before commencing work.
3. Remove all connections from the High Voltage
Rectifier.
4. Using the Megger, test for continuity in both
directions. Compare results with the table.
Open Circuit both ways FAIL
Conducts one way only PASS
Short Circuit both ways FAIL
Conducts one way, leaks the other FAIL

Page 12400 Series Ovens 32Z3769 Issue 1
SW2 Primary Interlock— located on the left hand side of the oven. Directly disconnects
the supply to the microwave generating circuit and thereby cuts off the microwave emissions
from the oven when the door is opened.
SW1 Monitored switch—located on the same assembly as the primary. The Monitor
switch will produce a short circuit across the mains supply if the Primary interlock switch is
faulty, thus blowing the microwave fuse and rendering the oven inoperative.
SW3 The Secondary interlock—located on the left hand side of the oven and like the
primary switch will cut off the microwave emission and will do so even if the primary and
monitored interlock have failed open circuit.
Note: If operation of the Monitor switch has caused the Microwave Fuse to blow, the
Primary and Monitor microswitches must be changed, as they may have been
damaged by the high short-circuit currents involved.
SW4 Convection fan switch—located on the same bracket as the control switch.
This switch is wired in series with the convection motor supply and will disconnect when
the door is opened.
SW5 Control switch—located on the top right behind the display connects to the
logic control PCB on a black and white twisted pair of wires. It is this signal that is used by
the control circuit to determine the door position. A closed contact indicates a closed door.
Door interlock operation
The door on the oven is monitored by five microswitches. Three of these are used in the
conventional “Primary, Secondary and Monitor” switch arrangement shown below, while the fourth
is a low-voltage switch linked directly to the control circuitry and the fifth switches the power to the
convection motor.The switches operate as follows:
Door open position
Fused
Live
Live
LHS
RHS
Control PCB
Convection Fan
Neutral
Neutral
Output
SW2 Primary
SW5
SW4
SW3 Secondary
SW1 Monitor

Page 13400 Series Ovens 32Z3769 Issue 1
Procedure for Door Interlock and test:
The three interlock Microswitches are located
on the LHS of the oven.
Release the 2 screws retaining each
microswitch assembly just enough to allow
the assembly to move.
The purpose of this procedure is to set the interlock so that when the
door is opened more than 3mm the Oven microwave circuit is switched
OFF.
The door closed position [Microwave circuit ON] is actually set with a
1mm opening to allow for heat expansion when the oven is operating at
full temperature.
WARNING
Before adjusting the microswitch assemblies ensure that the oven has been
isolated from the electrical supply and discharge the HT Capacitors.
Please note the terminals on the microswitches remain live when the oven is
switched off, so complete isolation is essential.
1
To set Microswitches SW1 & SW2 and SW3 to OPEN [OFF] at a
door opening with a 3mm gap:
Slide forward Microswitch assembly to set SW2 to just click CLOSED
and then allow the assembly to move slightly approx. 0.05– 0.10 Inch
(1-2mm) to just allow the switch to return to the OPEN position and
tighten both screws.
Repeat for SW3 rotating clockwise to CLOSED until it just opens then
anti-clockwise slightly to the OPEN position and tighten screws.
Position the door open with a 3mm gap:
Place the two 3mm Spacers over the door seal at the top of the
door on each side at the corner and carefully close the door
ensuring the spacer is on the door seal.
2
3mm Spacers
Door
Seal Door
Five Microswitches:
SW1, SW2 & SW3 door
interlock Microswitches are
located on the LHS of the
oven.
SW4 & SW5 are located on
the RHS of oven behind the
control panel.
SW4 switches off the
convection fan
SW5 sends a ‘door open‘
signal to the Control Board
SW3
SW1 & SW2
Tools Required: Door Spacer Kit P10H0129, Multimeter

Page 14400 Series Ovens 32Z3769 Issue 1
3 Remove the 3mm spacers and open and close
the door 2 or 3 times to allow the parts to work
together.
Set a Multimeter Resistance [ Ω] and connect
the meter to the microswitch terminals 37 &
29.
Check that microswitches SW1,SW2 and SW3 are in the CLOSED [ON]
position and the Multimeter reads a minimal resistance.
If the meter reads Open Circuit, remove the 1mm spacers and repeat steps 1-
4 moving the switch assemblies very slightly further down.
This procedure may need to be repeated several times to achieve a
satisfactory arrangement.
4 To confirm the oven operates at a 1mm door open position.
Replace the 3mm spacers with the two 1mm Spacers.
1mm Spacers
0.1
Open Circuit
3mm Spacers
The meter should now read open circuit,
if not repeat steps 1 & 2 adjusting the switch assemblies slightly
upwards, ensuring the Microswitches are in the OPEN [OFF]
position.
Replace the 3mm spacers on the door and over
the corners of the seal as before.
Door
Seal Door
Door
Seal Door

Page 15400 Series Ovens 32Z3769 Issue 1
1 Side Panel (L/H) MC3134
2 Ferrite RMC6773
3 Upper Trim MC3120MC
4 Top Plate RMC6759EMC
6 Rear Panel MC3769MC
7 Air Filter MC3155
8 Side Panel (R/H) MC3145
Principal components: casework
9 Handle Hanger RCK6319
11 Front Lower Panel MC3047
12 Lower Trim MC3122
96 PCB Retainer 40H0084
104 Side Trim LH MC3789MC
105 Side Trim RH MC3121
140 Rubber Base seal long
Rubber Base seal short
40H0259
40H0260
1
2
4
2
6
7
8
9
12
11
96
105
104
3
140

Page 16400 Series Ovens 32Z3769 Issue 1
Door mechanism
13 Door Stay (R/H) MC3040
14 Hinge Body MC30121X02
15 Hook (A) RMC66171
16 Hook (B) RMC66172
17 Door Spring (B) MC3068X01
18 Hinge Body (L/H) MC30122X01
19 Door Spring (A) MC3067
20 Door Stay (L/H) MC3046
22 Solid Door Assy Silver MC3230MCX02

Page 17400 Series Ovens 32Z3769 Issue 1
34 Motor Bracket RMC7307X01
137 Thumb nut 31Z4031
37 Convection Motor MC3730MOD
135 Catalytic Converter 31Z1245
136A Vent Plate 40H0236
23 Turntable Disc RMC7340X01
24 Baffle Plate Bolt CP30326
25 Baffle Plate MC3018
26 Fan Fixing Cap RCK7617
27 Convection Fan MC3111
30 Oven Body MC3750MC
31 Gearbox MC3216
32 Shaft RMC7391X01
33 Motor Cooling Fan RMC7310
Oven cavity components and hot air system
136A
25
137 135
Catalytic Converter

Page 18400 Series Ovens 32Z3769 Issue 1
Oven door assembly
22 Solid Door Assy. MC3230MCX02
38 Door Handle Silver RBR1285048
40 Door Cover Outer 40H0080
41 Inner Panel 40H0081
42 Door Reinforcement RMC70722
43 Door Frame (B) MC3055
44 Insulation Wrap 32Z0001
46 Door Base Silver MC3031X05
47 Door Cover MC3064X01
49 Plate - Door Switch LHS MC0562MC
52 Packing (B) MC3065
53 Door Rear Plate MC3229
48 Plate - Door Switch RHS MC3056
49

Page 19400 Series Ovens 32Z3769 Issue 1
Door Interlock RHS, Magnetron & Stirrer Motor
129 133
61 Foam Tape 31Z0042
63 Magnetron 30Z1349
64 Magnetron Thermal trip 30Z0088
129 Turntable Motor 11H0110
54 Door Switch Bracket 40H0023
55 Microswitch SW4 30Z0240
56 Microswitch SW5 30Z0240
59 Microswitch Insulator 31Z0115
60 Outlet Duct MC3037

Page 20400 Series Ovens 32Z3769 Issue 1
Principal Components LHS & Rear view:
57
Microswitches
57 Secondary Microswitch SW3 30Z0240
117 Axial fan 11H0075
138 Primary Microswitch SW2 30Z1396
139 Monitor Microswitch SW1 30Z1395
37 Hot Air Motor MC3730MOD
55 Microswitch SW4 30Z0240
56 Microswitch SW5 30Z0240
69 Thermal cut-out switch 30Z1024
73 Heater Element 240V 40H0009
74 Temperature Sensor 30Z1419
143 Motor Resistor Assembly111H0122
142 Exhaust steam pipe MC3773
73
37
6974
55
138
139
117
56
142
143
Note:
1. The 270ΩResistor is required to
drop the supply voltage to the
Convection Fan Motor to 208V.