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E31 CONVECTION OVEN
Applies to Units from S/N 40423
SERVICE
MANUAL
Revision 2F/3506
October, 2002
Manual P/N MOME31
Page 2
WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED
OUT BY QUALIFIED PERSONS ONLY.
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CONTENTS
This manual is desig ned to take a more in depth look at the E31 c onvec tio n ov en for the purpose of
making the unit more understandable to service people.
There are settings explained in this manual that should never require to be adjusted, but for
completeness and thos e special cases where thes e settings are required to ch ange, this manual
gives a full explanation as to how, and what effects will result.
SECTION PAGE NO.
1. SPECIFICATIONS .........................................................................................................5
2. INSTALLATION .............................................................................................................7
3. OPERATION ..................................................................................................................9
3.1 Description of Controls
3.2 Explanation of Control System
4. MAINTENANCE .............................................................................................................12
4.1 Cleaning
4.2 Routine Procedures
5. TROUBLE SHOOTING GUIDE ......................................................................................14
6. SERVICE PROCEDURES .............................................................................................17
6.1 Fault Diagnosis
6.2 Access
6.3 Replacement
6.4 Adjustment / Calibration
7. ELECTRICAL SCHEMATICS ........................................................................................32
8. ELECTRICAL WIRING DIAGRAMS ..............................................................................33
9. SPARE PARTS ..............................................................................................................34
10. ACCESSORIES / OPTIONS ..........................................................................................35
11. PARTS DIAGRAM .........................................................................................................36
11.1 Main Assembly
11.2 Control Panel Assembly
12. SERVICE CONTACTS ..................................................................................................41
APPENDIX A. POWER RELAY UPGRADE KIT ...................................................................43
IMPORTANT: MAKING AL TERATIONS MAY VOID WARRANTIES AND APPRO VA LS.
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MODEL: E31
1. SPECIFICATIONS
(1.55)
FRONT
(28.35)
(4.70)
(23.60)
(23.10)
(6.30)
(1.85)
SIDE
PLAN
LEGEND
- Electrical connection entry point
Dimensions shown in millimetres.
Dimensions in inches shown in brackets.
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- Water entry - 9mm /
3
/8” I.D male hose connection
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LOCATION
To ensure correct ventilation for the motor and
controls the following minimum installation
clearances are to be adhered to:
Rear 25mm / 1”
Left-hand side 25mm / 1”
Right-hand side 25mm / 1”
OVEN INTERNAL DIMENSIONS
Width 468 mm / 18.5”
Height 418 mm / 16.5”
Depth 432 mm / 17”
Oven Volume 0.08 m³ / 3.0 ft³
OVEN RACK SIZE
Width 460 mm / 18”
Depth: 370 mm / 14.5”
ELECTRICAL SUPPLY SPECIFICATION
OPTIONS
208 V AC 60 Hz, 14.6 A, 3.2kW @ 208 V
220-240 V AC 60 Hz, 13.0 A, 3.1kW @ 240 V
208-220 V AC 50 Hz, 14.6 A, 3.2kW @ 220 V
230-240 V AC 50 Hz, 13.0 A, 3.1kW @ 240 V
ELECTRICAL PLUG SPECIFICATION
REQUIREMENTS
Australia 3-pin 250V 15A, AS/NZ 3112
Canada 3-pin 250V 15A, NEMA 6-15
New Zealand 3-pin 250V 15A, AS/NZ 3112
United Kingdom 3-pin 250V 13A fused, BS
1363A
United States 3-pin 250V 15A, NEMA 6-15
Other Countries 3-pin 250V 13A minimum,
type to meet country stan-
dards
WATER SUPPLY CONNECTION
Max Pressure 550 kPa / 5.5 bar / 80 psi
Min Pressure 100 kPa / 1.0 bar / 15 psi
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2. INSTALLATION
WARNING: THIS APPLIANCE MUST BE GROUNDED.
WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED
OUT BY QUALIFIED PERSONS ONLY.
It is most im portant that the oven is instal led
correctly and that the operation is correct
before use. Installation shall comply with local
electrical, health and safe t y requirements.
BEFORE CONNECTION TO THE POWER
SUPPLY
Unpack and check unit f or dam age and repor t
any damage to the c arrier and dealer . Repor t
any deficiencies to your dealer. Fit the feet
which are packed inside the oven. Fit door
handle to oven door. Chec k that the avai lable
power supply is correc t to that shown on the
rating plate located on the right-hand side
panel (refer figure 2.3).
208 V AC 60 Hz, 14.6 A, 3.2kW @ 208 V
220-240 V AC 60 Hz, 13.0 A, 3.1kW @ 240 V
208-220 V AC 50 Hz, 14.6 A, 3.2kW @ 220 V
230-240 V AC 50 Hz, 13.0 A, 3.1kW @ 240 V
LOCATION
To ensure correct ventilation for the motor and
controls the following minimum installation
clearances are to be adhered to:
Rear 25mm / 1”
Left-hand side 25mm / 1”
Right-hand side 25mm / 1”
IMPORTANT: THE OVEN VENT
LOCATED ON THE CABINET TOP
MUST NEVER BE OBSTRUCTED.
Position the oven in its allocated working
position. Use a spirit level to ensur e the o ven
is level from side to s ide and f ront to b ack. ( If
this is not carried out, uneven cooking could
occur). The feet/legs used with bench or f loor
mounting or provided with stands are
adjustable and will require adjusting in
levelling the unit. It should be positioned so
the operating panel and oven shelves are
easily reachable for loading and unloading.
DOUBLE STACKING UNITS
When it is desired to m ount one unit on top of
another the 31mm (1¼") high spacer feet
must be used. These short feet should be
screwed on, and the unit lifted on top of the
bottom unit, where it locates safely under its
own weight, for normal applications.
BEFORE USE
Operate the oven for about 1 hour at 200°C
(400°F) to remove an y fumes or odours which
may be present.
ELECTRICAL CONNECTION
E31 convection ovens are supplied with
pre-fitted cords. Ensure unit is fitt ed with the
correct cord and plug for the installation (refer
specifications section).
Figure 2.1
Should changing of the cord be necessary,
gain access to the electrical connection
terminal block and strain relief by removing
the back panel (four screws).
WATER CONNECTION
A cold water supply should be fitted to the
water inlet (9mm /
is located on the re ar of the left hand side of
the unit.
Connect water supply - Max inlet pressure
80psi / 550kPa.
Turn on water supply to check for leaks.
IMPORTANT: MAXIMUM INLET WATER
PRESSURE IS 550 kPa / 80 psi.
3
/8” hose connection) which
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DOOR HANDLE INSTALLATION
1. Open oven door.
2. Remove two screws (item 2).
3. Remove the two screws (item 3) from the
handle (item 1).
4. Install the handle bracket through the slot
on the door side.
5. Screw in the t wo screws (item 2) fully, then
fully screw in the previous two scr ews (item
3). Ensure that they are tight.
1
3
2
Figure 2.2
RATING PLATE LOCATION
The rating plate for the E3 1 convection oven is
located at the b ottom left cor ner of the RH side
panel.
Ratin g Plate
Figure 2.3
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3. OPERATION
NOTE: A full user’s operation m anual is supplied with the product and can be used for further
referencing of installation, operation and service.
3.1 DESCRIPTION OF CONTROLS
1
2
3
4
5
1. POWER
Depress to switch power on or off (switch
illuminates when power is on).
2. THERMOSTAT
Temperature range 50 - 280°C (120 - 550°F).
Indicator illuminates when elements are
cycling ON to maintain set temperature.
GRILL POSITION - The GRILL indicator will
illuminate indicating that the GRILL function
has been set. The HEATING indicator will
also illuminate whenever the elements are on.
3. BAKE TIMER
1 Hour bake timer.
(Indicator illuminates when “time up” (0)
reached, and buzzer sounds).
4. ROAST N HOLD
Depress switch to activate ’ROAST N HOLD’
function (Switch illuminates when ON).
5. ROAST TIMER
3 Hour roast timer.
(Indicator illuminates when “time up” (0)
reached, and product held at 75°C (167°F).
6. STEAM SWITCH
Push switch to activate water injection (W ater
injects into oven while the button is
depressed).
7. LIGHT SWITCH
Push switch to activate oven light.
(Light illuminates while button depressed).
6
7
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3.2 EXPLANATION OF CONTROL
SYSTEM
The E31 Turbofan convection oven features
multi-function operator controls for which a
correct understanding of their operation is
required before carrying out any service or
fault repair work . The contr ol devic e func tions
are explained as follows:
A power switch on the control panel isolates
all to the controls of the oven. With the power
switch Off all functions of the oven are
inoperable.
With the power switch O n (illuminated) power
is directly supplied to the 60 minute bake
timer, steam (water injection) switch, door
microswitch, light s witch, and the temperature
control circuit. Accordingly the oven
circulation fan will operate when the door is
closed, and with do or open the oven light will
come on and the circulation fan will shut
down, as these are controlled via the door
microswitch. The control panel light switch
will turn the oven light on when the door is
closed only when the light switch is held in.
The 60 minute timer is a mechanical timer and
can therefore be operated with the oven’s
power switch On or Off. However, only with
the oven’s power switch On will the switch
contacts of the 60 minute timer turn on the
time-up buzzer and illuminate the time-up
indicator on the control panel. The buzzer
and time-up indicator provide indication that
the time setting has r un down to zero and at
this point will rem ain On continuous ly until th e
60 minute timer has been manually set back
to the Off (vertical) position. The 60 minute
timer does not control any other part of the
oven’s operating system as this timer is
independent of the temperature control and
heating system.
The steam (water injection) switch on the
control panel can be operated whenever the
power switch is On . The switc h is m omentary
like the light s witch and when depress ed, will
operate the electric s olenoid valve at the rear
of the oven and inject water into the water
trough at the bottom of the left hand sid e rack
in the oven. Rele asing the steam button will
close the solenoid val ve. This f eature is used
to instantaneousl y add moisture into the o ven
cavity, or to introduce a reservoir of water in
the water trough to maintain humidity in the
oven chamber and minimise product’s
moisture loss during cooking.
The temperature contr ol of this oven is with a
capillary type thermostat which can be set to a
required cooking temperature, or set to the
Grill/Broil position to provide top browning or
grilling/broiling in the oven.
The thermostat s witch has a separate switch
body assembled on to the front from the s haft
assembly and when th e thermostat is s et to a
cooking temperature, one set of contacts is
closed to switch power from the oven
thermostat to the bottom heating element in
the oven. The second switch contact of this
switch assembl y remains open in this setting
and isolates power f rom the top elem ent inner
coil. The top element outer coil is directly
switched on from the oven thermostat.
Accordingly only the top outer element and
the bottom element ar e used when a cooking
temperature is selected. The control panel
indicator light above the thermostat knob
cycles On and Off with the thermostat to
indicate when the elements are on and the
oven is heating.
When the thermostat c ontrol is set to the Grill
position the firs t switch con tact opens and the
second switch contact closes. This
arrangement allows power to be provided to
the top element inner coil when the thermostat
is On, and isolates power from going to the
bottom heating element. The top element
outer coil which is directly fed from the oven
thermostat switch is therefore On in
conjunction with the top element inner coil
when the thermostat is set to the Grill position.
As both the top i nner and outer elem ent coils
are thermostatically controlled, the elements
will cycle On/Off with the door closed as the
thermostat setting in the Grill position is 300°C
(600°F). If the Grill position is selected with
the door open, the elements will remain On
continuously and the circulation fan will be
turned Off. The control panel Grill indicator
will illuminate when the thermostat is set to
the Grill position and will cycle On and Off
with the main heating indicator light.
The E31 Turbofan convec tion oven features a
Roast-and-Hold system which can be used to
automatically set the oven to a fixed holding
temperature at the end of a timed cooking
period. When the Roast-and-Hold switch is
turned On the switch will illuminate and turn
on a mini-contactor found on the inside of the
control panel. W hen the contac tor is s witch ed
On a normally closed switch pole on the
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contactor is open and the normal power
supply to the oven thermostat is isolated. A
second normally open switch pole is closed
and this provides power to the 3 hour roast
timer.
If the roast timer is in the Hold (vertical)
position the timer switch contacts will be in
their normally closed position and supply
power directly to the Hold ther mostat located
behind the control panel. The Hold
thermostat is fac tory set to 75°C (167°F) and
will directly supply power to the bottom
heating element as required to maintain its
preset temperature.
If the main therm ostat is t urned On , p ower wil l
also be supplied t o the top outer elem ent coil
through the first switch contact of the
thermostat front switch assembly. In this case
the thermostat heat ing light will also c ycle O n/
Off as the Hold thermostat maintains
temperature.
In the Roast-and Hold m ode the 3 hour timer
can be set to a selecte d roas ting tim e. Dur ing
this time period the normally open switch
contacts of the timer are closed. The timer
has two change over switches and in this
position one is used to supply power to its
timing motor and the other is used to switch
power directly to the main oven thermostat.
During the 3 hour timer run-down period the
oven temperature will be controlled by the
main oven therm ostat to the set temperature
and operate as previously described.
When the 3 hour timer has run down and
reached the Hold position the two switch
contacts change over to th eir normally closed
position which isolates power from the timer
motor and the oven thermostat. It also
switches power back to the oven hold
thermostat. At this point the temperature
control is now maintained by the hold
thermostat as previously described. To
cancel the hold circuit the Roast-and-Hold
switch is turned Off. This turns off the
contactor which removes power from the 3
hour timer and closes the contactor pole on
the contactor that feeds the main oven
thermostat.
The factory preset hold thermostat can be
adjusted as required to change the holding
temperature if necessary. Refer Service
section for this procedure.
The following Troubleshooting Guide should
be used to identify any incorrect oven
operation. On correct identification of the
operating fault the T roubleshooting Guide will
make reference to the corrective action
required, or refer to the Fault Diagnosis
section and/or Service section to assist in
correction of the fault.
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4. MAINTENANCE
WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED
OUT BY QUALIFIED PERSONS ONLY.
4.1 CLEANING
WARNING: ALWAYS TURN THE
POWER SUPPLY OFF BEFORE
CLEANING.
IMPORTANT: THIS UNIT IS NOT
WATER PROOF.
DO NOT USE A WATER JET SPRAY T O
CLEAN INTERIOR OR EXTERIOR OF
THIS UNIT.
EXTERIOR
Clean with a good quality stainless steel
cleaning compound. Harsh abr asive clean ers
may damage the surface.
INTERIOR
Ensure that the oven cham ber is cool. Do not
use wire brushes, steel wo ol or other abras ive
materials. Clean the oven regularly with a
good quality oven cleaner. Take care not to
damage the fan or the tube at the r ight side of
the oven which controls the thermostat.
OVEN RACKS
To remove, slide out to the s top position, raise
the front edge up, and lift out.
SIDE RACKS
To remove, tak e hold of the centre rung and
swing towards the oven top. T o replace, hold
horizontally, engage in holes and swing down.
FAN BAFFLE
To remove, unscr ew the ov en lamp gl ass and
lift the baffle out. To replace, locate the
bottom edge of the baffle over the bottom
element terminal plate and secure in place
with the oven lamp glass.
IMPORTANT: DO NOT OVER
TIGHTEN LAMP GLASS.
OVEN SEALS
To remove, hold at their centre point and
pull forward until they unclip. Remove side
seals first, then top and bottom. The seals
may be washed in the sink, but take care not
to cut or damage them. T o replace, ensure
that the lip is facing the oven opening. Fit
the top and bottom seals first, then the s ide
seals.
OVEN DOOR GLASS
Clean with conventional gla s s cleaners
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4.2 ROUTINE PROCEDURES
PROCEDURE INTERVAL
DOOR SEALS Check for deterioration. 12 months
DOOR PIVOT BUSHES Check for wear. 12 months
DOOR CATCH Ensure that catch is adjusted such that the door closes
properly.
ELEMENTS Check that element res istances are c orrect to their r ating
(refer 6.3.13)
WATER NOZZLE Check for liming / scale build-up in water nozzle. 12 months
12 months
12 months
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5. TROUBLE SHOOTING
WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED
OUT BY QUALIFIED PERSONS ONLY.
FAULT POSSIBLE CAUSE REMEDY
THE OVEN DOES NOT
OPERATE / START
FAN DOESN’T OPERATE Door not closed.
The mains isolating switch on
the wall, circuit breaker or fuses
are “off” at the power board.
The power switch on the oven is
off.
Incorrect electrical supply.
(Refer fault diagnosis 6.1.1)
Power switch on unit faulty.
(Refer fault diagnosis 6.1.1)
(Fan only operates with door
closed).
Door microswitch out of
adjustment.
(Refer fault diagnosis 6.1.2)
Door microswitch faulty
(Refer fault diagnosis 6.1.2)
Fan motor faulty.
(Refer fault diagnosis 6.1.2)
Wiring.
Turn on.
Depress switch. Switch will
illuminate.
Ensure electrical supply correct.
Replace.
(Refer service section 6.3.4)
Close door.
Adjust.
(Refer service section 6.4.2)
Replace.
(Refer service section 6.3.2)
Replace.
(Refer service section 6.3.15)
Check and tighten any loose
wiring.
OVEN LIGHT NOT
ILLUMINATING - DOOR OPEN
OVEN LIGHT NOT
ILLUMINATING - DOOR
CLOSED
NO WATER INJECTION /
STEAM
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Blown bulb.
No power to light.
(Refer fault diagnosis 6.1.3)
Blown bulb.
Light switch faulty.
(Refer fault diagnosis 6.1.4)
Water not turned on.
Oven water nozzle block ed.
Fault with water valve.
(Refer fault diagnosis 6.1.5)
Steam switch faulty.
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Replace.
(Refer service section 6.3.1)
Replace.
(Refer service section 6.3.1)
Replace.
(Refer service section 6.3.4)
Turn water on at water supply.
Remove, clean or replace.
(Refer service section 6.3.13)
Service or replace as required.
(Refer service section 6.3.11,
6.3.12)
Replace.
(Refer service section 6.3.4)
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FAULT POSSIBLE CAUSE REMEDY
CONTINUOUS WATER OUT
OF OVEN WATER NOZZLE
60 MINUTE TIMER WILL NOT
TIME DOWN
60 MINUTE TIMER
INACCURATE BELOW 20
MINUTES
60 MINUTE TIMER NO TIME
UP BUZZER
60 MINUTE TIMER NO TIME
UP INDICATOR
NO HEAT No power to thermostat.
NO TEMPERATURE
CONTROL
SLOW RECOVERY Oven in ‘Roast ‘n Hold’ mode.
BOTTOM ELEMENT NOT
WORKING
TOP ELEMENT NOT
WORKING (IN BAKE MODE—
NOT GRILL / BROIL MODE)
With oven on only—Electrical
fault.
(Refer fault diagnosis 6.1.6)
With oven on or off—Fault with
water valve.
Timer fau l ty.
Timer not set correctly.
Zero (time up) position not set
correctly.
Buzzer faulty.
(Refer fault diagnosis 6.1.7)
Timer not switching on buzzer.
(Refer fault diagnosis 6.1.7)
Indicator faulty.
(Refer fault diagnosis 6.1.8)
(Refer fault diagnosis 6.1.9)
Thermostat faulty
(Refer fault diagnosis 6.1.9)
Thermostat faulty
(Refer fault diagnosis 6.1.10)
Overloading of oven.
Electrical supply incorrect.
Fan not working.
Thermostat calibration.
(Refer fault diagnosis 6.1.11)
Element(s) not working.
Element faulty (blown).
(Refer fault diagnosis 6.1.12)
Element faulty / blown.
(Refer fault diagnosis 6.1.13)
Correct electrical fault.
Service or replace as required.
(Refer service section 6.3.11,
6.3.10)
Replace.
(Refer service section 6.3.6)
For timer settings below 20
minutes, always rotate past 20
minutes, then back to desired
time.
(Refer service section 6.4.5
Replace.
(Refer service section 6.3.5)
Replace.
(Refer service section 6.3.6)
Replace.
(Refer service section 6.3.3)
Identify fault and correct.
Replace.
(Refer service section 6.3.8)
Replace.
(Refer service section 6.3.8)
Switch off ‘Roast ‘n Hold’.
Reduce oven loading.
Check supply voltage is as per
rating plate voltage.
Check fan operation.
Correct calibration.
(Refer service section 6.4.1)
Correct element fault.
(Refer Fault: Top element,
Fault: Bottom element)
Replace.
(Refer service section 6.3.14)
Replace.
(Refer service section 6.3.14)
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FAULT POSSIBLE CAUSE REMEDY
NO THERMOSTAT HEATING
INDICATOR
GRILL NOT WORKING
GRILL INDICATOR LIGHT NOT
WORKING
ROAST TIMER (180 MINUTE)
WILL NOT TIME DOWN
NO HOLD INDICATOR
HOLDING TEMPERATURE
INCORRECT
DOOR DOES NOT CLOSE Tray in way of door.
DOOR SEAL LEAKS Door seal damaged.
Indicator faulty.
(Refer fault diagnosis 6.1.14)
Element faulty / blown.
(Refer fault diagnosis 6.1.15)
Indicator faulty.
(Refer fault diagnosis 6.1.16)
Roast ’n’ Hold switch not
depressed.
No power to timer / timer faulty.
(Refer fault diagnosis 6.1.17)
‘Roast ‘n Hold’ switch fau lt y.
(Refer fault diagnosis 6.1.17)
Faulty indicator.
(Refer fault diagnosis 6.1.18)
Faulty timer.
(Refer fault diagnosis 6.1.18)
Hold thermostat set
temperature incorrect
Hold thermostat faulty.
(Refer fault diagnosis 6.1.19)
Door seal obstruction.
Door handle installed
incorrectly.
Door ball catch setting incorrect.
Door pivot bushes / pins worn.
Door seal incorrectly fitted.
Door ball catch setting incorrect.
Door pivot bushes / pins worn.
Replace.
(Refer service section 6.3.3)
Replace.
(Refer service section 6.3.14)
Replace.
(Refer service section 6.3.3)
Depress switch. Switch will
illuminate.
Correct electrical fault / replace
timer.
(Refer service section 6.3.7)
Replace.
(Refer service section 6.3.4)
Replace.
(Refer service section 6.3.3)
Replace.
(Refer service section 6.3.7)
Adjust to correct temperature.
(Refer service section 6.4.4)
Replace.
(Refer service section 6.3.9)
Correctly position tra y in rack .
Correctly install door seal.
(Refer service section 6.3.20)
Fit correctly.
(Refer installation section)
Adjust.
(Refer service section 6.4.3)
Replace.
(Refer service section 6.3.21)
Replace.
(Refer service section 6.3.20)
Correctly install door seal.
(Refer service section 6.3.20)
Adjust.
(Refer service section 6.4.3)
Replace.
(Refer service section 6.3.21)
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6. SERVICE PROCEDURES
WARNING: ENSURE POWER SUPPLY IS SWITCHED OFF BEFORE SERVICING.
WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED
OUT BY QUALIFIED PERSONS ONLY.
SECTION PAGE NO.
6.1 FAULT DIAGNOSIS ............................................................................................................. 19
6.1.1 Oven Does Not Operate / Start ........................................................................... 19
6.1.2 Fan Does Not Operate ........................................................................................ 19
6.1.3 Oven Light Not Illuminating—Door Open ............................................................ 19
6.1.4 Oven Light Not Illuminating—Door Closed ......................................................... 19
6.1.5 No Water Injection / Steam ................................................................................. 19
6.1.6 Continuous Water Out Of Oven Water Nozzle ...................................................20
6.1.7 60 Minute Timer No Time Up Buzzer .................................................................. 20
6.1.8 60 Minute Timer No Time Up Indicator ............................................................... 20
6.1.9 No Heat ............................................................................................................... 20
6.1.10 No Temperature Control .....................................................................................21
6.1.11 Slow Recovery .................................................................................................... 21
6.1.12 Bottom Element Not Working ..............................................................................21
6.1.13 Top Element Not Working (In Bake Mode—Not Grill / Broil) .............................. 21
6.1.14 No Thermostat Heating Indicator ........................................................................21
6.1.15 Grill Not Working ................................................................................................. 21
6.1.16 Grill Indicator Not Working ..................................................................................22
6.1.17 Roast Timer (180 Minute) Will Not Time Down ................................................... 22
6.1.18 No Hold Indicator ................................................................................................. 22
6.1.19 Holding Temperature Incorrect ........................................................................... 22
6.2 ACCESS ............................................................................................................................... 23
6.2.1 Control Panel ....................................................................................................... 23
6.2.2 Service Panel (Rear Panel) ................................................................................. 23
6.2.3 Baffle ................................................................................................................... 23
6.2.4 Control Panel (Rear) ........................................................................................... 23
6.3 REPLACEMENT ................................................................................................................... 24
6.3.1 Light Bulb / Glass ................................................................................................ 24
6.3.2 Door Microswitch ................................................................................................. 24
6.3.3 Indicator Neon Light ............................................................................................ 24
6.3.4 Power / Roast / Lights / Water Switches ............................................................. 24
6.3.5 Buzzer ................................................................................................................. 24
6.3.6 Bake Timer .......................................................................................................... 25
6.3.7 Roast Timer .........................................................................................................25
6.3.8 Thermostat .......................................................................................................... 25
6.3.9 Hold Thermostat .................................................................................................. 26
6.3.10 Mini-Contactor ..................................................................................................... 26
6.3.11 Water Solenoid .................................................................................................... 26
6.3.12 Water Solenoid Cleaning ..................................................................................... 27
6.3.13 Spray Nozzle ....................................................................................................... 27
6.3.14 Elements .............................................................................................................. 27
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6.3.15 Fan ...................................................................................................................... 27
6.3.16 Motor ................................................................................................................... 28
6.3.17 Outer Glass ......................................................................................................... 28
6.3.18 Inner Glass .......................................................................................................... 29
6.3.19 Inner Glass Seal .................................................................................................. 29
6.3.20 Door Seals ........................................................................................................... 29
6.3.21 Door Pivot Bushes ............................................................................................... 29
6.4 ADJUSTMENT / CALIBRATION .......................................................................................... 30
6.4.1 Thermostat Calibration ........................................................................................ 30
6.4.2 Door Microswitch Adjustment .............................................................................. 31
6.4.3 Door Alignment .................................................................................................... 31
6.4.4 Hold Temperature Adjustment ............................................................................31
6.4.5 60 Minute Timer Zero Position Adjustment ......................................................... 31
Revision 2/F3506
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6.1 FAULT DIAGNOSIS
6.1.1 OVEN DOES NOT OPERATE / START
Incorrect electrical supply
Check that the voltage across phase and
neutral (L1 and L 2) t erm inals of term inal bloc k
is the voltage as stated on the unit’s electrical
rating plate.
If incorrect, check electrical connection of
supply wiring and / or check electrical supply.
Power switch faulty
Check if power switch latches. If the switch
does not latch, then switch is faulty—replace.
With switch latched, check voltage across
terminal one to term inal three or f our. If there
is no voltage, check for fault in wiring.
Check voltage acr oss terminal two to term inal
three or four. If there is no voltage, then
switch is faulty—replace.
NOTE:
6.1.2 FAN DOESN’T OPERATE
Microswitch out of adjustment
Open oven door and manually depress door
microswitch actuator at top right of oven. If
this activates the fan, then the microswitch
actuator arm at rear of oven requires
adjustment.
Microswitch faulty
Check voltage across m icros witch ter minals to
neutral.
With the door closed there shoul d be power to
the com terminal and the n.o. terminal.
With the door ope n there should be po wer to
the com terminal and the n.c. term inal.
If not, microswitch is faulty—replace.
When power switch is latched, it
should illuminate if operating
correctly.
Microswitch
com
Fan motor faulty
Check the supply voltage across motor
terminals. If there is no voltage then check
the electrical connections of supply wiring.
If voltage is correct then check the oven fan
for free rotation. Remove any obstruction.
If fan is free to spin an d the voltage suppl y is
correct, then the motor is faulty—replace.
6.1.3 OVEN LIGHT NOT ILLUMINATING—
DOOR OPEN
No power to light
Check the supply voltage across lamp
housing terminals at rear of oven. If the
voltage is corr ect, replace the bulb (if faulty).
If the bulb is OK, check lamp housing.
Replace if faulty.
If there is no voltage, open oven door and
manually depress door microswitch actuator
at top right of oven. If this activates the fan,
then the microswitch actuator arm at rear of
oven requires adjustment.
Check voltage across micro-switch terminals
to neutral.
With the door closed there s hould be p ower to
the com terminal and the n.o. terminal.
With the door open there shoul d be power to
the com terminal and the n.c. term inal.
If not, microswitch is faulty—replace.
6.1.4 OVEN LIGHT NOT ILLUMINATING—
DOOR CLOSED
Light switch faulty
Check voltage to the bottom terminal of the
switch. If there is no voltage, then check
wiring.
With switch depressed, check voltage at top
terminal. If there is no voltage, then replace
the switch.
If voltage is correct, then check wiring to light.
NOTE:
Alternately, perform a continuity test
across the terminals with the light
switch depressed.
n.c.
Revision 2/F3506
Figure 6.1.1
n.o.
6.1.5 NO WATER INJECTION / STEAM
Fault with water valve
Check voltage sup ply across the water valve
solenoid coil with the steam switch depressed.
If there is no power supply then check the
control panel steam switch.
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Check voltage to the bottom terminal of the
switch. If there is no voltage, then check
wiring.
With switch depressed, check for voltage at
top terminal. If there is no voltage then
replace switch. If voltage correct, check wiring to solenoid coil.
If the power supply to the coil is correct,
disconnect wiring to coil and check the
resistance of the coil windings.
Correct coil resistance: 2500 ohms
NOTE:
If open circuit / high resistance, then
the coil is faulty—replace.
If coil resistance is correct, rewire and listen
for an audible so lenoid click when the steam
switch is depressed.
If solenoid can be he ard f unc tion in g, a nd ov en
water nozzle is not blocked, then remove
water solenoid and fittings and check for
blockages.
6.1.6 CONTINUOUS WATER OUT OF OVEN
WATER NOZZLE
Water solenoid electrical fault
With control panel steam switch not
depressed, check for power supply across
solenoid coil. If there is power to the coil, then
check wiring and steam switch (refer 6.1.5).
If no voltage at terminal 2 then timer is
faulty—replace.
NOTE:
Timer will continue to run for
approximately three minutes below
zero. Buzzer and time up indicator
will continue until t he timer manually
switched off (to vertical position).
6.1.8 60 MINUTE TIMER NO TIME UP
INDICATOR
Indicator faulty
With the timer in the zero position, check for
voltage across the indicator light. If correct,
then the indicator light is faulty—replace.
If there is no voltage then check wiring.
6.1.9 NO HEAT
No power to thermostat
Check voltage to terminal 1 on oven
thermostat. If there is no voltage then check
voltage through terminal 21 and 22 on mini
contactor (inside contro l panel). If there is no
voltage to terminal 21 then check wiring. If
there is no voltage to term inal 22 then check
that the contact indicator on centre of the
contactor is in ‘0’ position. If indicator is in ‘ 0’
position and there is no voltage to 21 then
replace contactor.
6.1.7 60 MINUTE TIMER NO TIME UP
BUZZER
Buzzer faulty
With timer in ‘zero ’ position, check the buzzer
at top of control panel (inside) for voltage
across terminals. If voltage is correct then
buzzer is faulty—replace.
If there is no voltage, then check wiring.
Buzzer
Buzzer Terminals
Figure 6.1.2
Timer not switching on buzzer
With timer in zero position, check voltage to
top connection (terminal 1) and bottom
connection (terminal 2) of tim er. If there is no
voltage at terminal 1 then check wiring.
Terminal A1
Contact
Indicator
Terminal 21
Terminal 22
Terminal A2
Figure 6.1.3
If indicator is in the ‘1’ posi tion then chec k the
voltage across c ontact or co il t erm inals A1 and
A2.
NOTE:
There should be no voltage across
these terminals when ‘Roast ‘n Hold’
is not selected.
If the indicator is in positi on ‘1’ wit h no voltage
across A1 and A2 then the contactor is
faulty—replace.
Thermostat faulty
Set thermostat to 200°C or 400°F. Check the
voltage out of ter minal two on th e thermostat.
If there is no voltage then the thermostat is
faulty—replace.
If the voltage is corr ect a nd the h eat ing light is
on then check all wiring to elements.
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6.1.10 NO TEMPERATURE CONTROL
Thermostat faulty
With thermostat in off (vertical) position, the
heating indicator sh ould be of f . If not then t he
thermostat is faulty—replace.
Check that the thermostat phial is in correct
location and chec k for br oken capillar y tube—
replace if damaged.
Place an accurate digital thermometer probe
in centre of oven. Set ther mostat to 180°C or
355°F. Close the oven door and allow oven
thermostat to rega in temperatur e. If tem perature overshoots by 50°C and continues,
switch off and replace.
6.1.11 SLOW RECOVERY
Thermostat out of calibration
Place an accurate digital thermometer probe
in centre of oven. Set ther mostat to 180°C or
355°F. Close the oven door and allow oven
thermostat to c ycle on and off twice. R ecord
oven centre temperature for the next
thermostat on and off c ycle. The thermostat
should cycle on and off between 165°C and
195°C or 330°F and 385°F when set to the
above temperature. If oven temperature is
outside these ranges, then the thermostat
requires recalibration.
NOTE:
6.1.12 BOTTOM ELEMENT NOT WORKING
Element faulty (blown)
With the thermostat on and heating check
voltage across bottom element terminals at
rear of oven. If the voltage is correct then
check the current dra w of element. If ther e is
no current draw then element is faulty—
replace.
Bottom Element
Terminals
If there is no voltage then check voltage is
being supplied to bottom element from terminal 6 on switch b lock mounted to the front of
the thermostat (fig 6.4.1). If no voltage at 6
Thermostat cycling span should be
±15°C or 27°F
Figure 6.1.4
then check for voltage at terminal P6. If
power to P6 (and none to 6), then the
thermostat is faulty—replace.
NOTE:
208 V : 9.6A ± 5%
220—240V: 8.7A ± 5%
6.1.13 TOP ELEMENT NOT WORKING (IN
BAKE MODE—NOT GRILL / BROIL)
Element faulty / blown
NOTE:
550°F) the outer coil onl y of the top element
assembly operates . The inner c oil works only
when in grill or broil mode.
With thermostat on and he ating check voltage
across top element ter minals at rear of oven.
If voltage is corr ect the n check current draw of
the element. If there is no c urrent draw then
the element is faulty—replace.
If there is no voltage check voltage is being
supplied to the top el ement from term inal two
on the switch block mounted to front of
thermostat.
If voltage is correct then check wiring.
NOTE:
208V : 3.8A ± 5%
220—240V: 3.5A ± 5%
6.1.14 NO THERMOSTAT HEATING
INDICATOR
Indicator faulty
Check the voltage across the indicator
terminals. If the voltage is correct then the
indicator is faulty—rep lac e .
If there is no voltage then check wiring.
6.1.15 GRILL NOT WORKING
Element faulty / blown
With thermostat in grill or broil position (fully
clockwise), check that the grill indic ator on t he
control panel indic ates. If not, then c heck the
voltage at terminal P5 on the thermostat
switch (fig 6.4.1). If there is no volt age check
that the switch has power on terminal 5. If
there is power at terminal 5, but not at P5
when thermostat is in grill position, then the
switch is faulty—replace thermostat assembly.
If grill indicator is illum inated, but t he top inner
grill element is not functioning, check the
voltage at the top inner element coils at re ar
of oven. If the voltage is correct then check
current draw of elem ent. If there is no current
draw then element is faulty—replace.
Correct bottom element current draw:
In bake mode (50—270°C or 100—
Top outer element current draw:
Revision 2/F3506
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Page 22
NOTE: Top inner element current draw:
208 V: 8.7A ± 5%
220—240 V: 7.8A ± 5%
6.1.16 GRILL INDICATOR NOT WORKING
Indicator faulty
Check the voltage across the indicator
terminals. If the voltage is correct then
indicator is faulty—rep lac e .
If there is no voltage then check wiring.
6.1.17 ROAST TIMER (180 MINUTE) WILL
NOT TIME D OW N
No power to timer
Check the voltage at terminal 5 on unders ide
of the 180 minute timer.
Check that one lead of timer motor is
connected to term inal 5 of timer and the other
lead is connected to neutral of ‘Roas t ’n Hold’
switch.
If voltage at term inal 5 is corr ect and wiring is
correct then the tim er motor is faulty—rep lace
timer.
If there is no power at terminal 5 check for
power supply at term inal 4 of timer . If there is
voltage at term inal 4 a nd n ot at ter minal 6 with
timer set, then time r switch is faulty—replace
timer.
Terminal 4
Terminal 1
Terminal 2
Terminal 5
Terminal 6
Terminal 3
Figure 6.1.5
If terminal 4 voltage is correct, check mini
contactor behind control panel is latched to
the ‘1’ position. If contactor is in ‘1’ position
then check wiring.
If contactor is in ‘0’ position when ‘Roast ‘n
Hold’ switch illuminated then check the
voltage across terminals A1 and A2 of mini
contactor (fig 6.1.3). If the voltage is correct
but the contactor in the off (‘0’) position then
the contactor is faulty—replace.
If there is no voltage acr oss A1 and A2 then
check wiring.
‘Roast ‘n Hold’ switch faulty
Check if the switch latches. If the switch does
not latch then the switch is faulty—replace.
With the switch latch ed, check voltage ac ross
terminal 1 to terminal 3 or 4. If there is no
voltage then check for fault in wiring.
Check voltage acr oss terminal 2 to terminal 3
or 4. If there is no voltage then switch is
faulty—replace.
NOTE:
W hen the switch is latch ed, it should
illuminate if operating correctly.
6.1.18 NO HOLD INDICATOR
Indicator faulty
Check the voltage across the indicator
terminals. If the voltage is correct then the
indicator is faulty—rep lac e .
If there is no voltage then check wiring.
Timer faulty
Check the voltage at terminal 3 of t imer, with
timer in hold position. If the voltage is correct
then check wiring.
If there is no voltage then check voltage at
terminal 1 of timer. If ther e is volt age at 1, but
no voltage at terminal 3 with timer in hold
position, then timer switch is faulty—replace.
6.1.19 HOLDING TEMPERATURE
INCORRECT
Hold thermostat faulty
With the power switch on and illuminated,
‘Roast ‘n Hold’ switch on and illum inated, and
the roast (180 minute) tim er set to hol d, ch eck
that the hold indicator is illuminated.
With a cold oven (ie room temperatur e) check
that the top outer and bottom oven elements
only are heating. T est the voltage across the
bottom element and top el ement terminals at
the rear of oven. If the voltage is correct then
refer Fault: Bottom element not working
(trouble shooting section).
NOTE:
If the main thermostat is set to off
(vertical) positio n and ‘Roast ‘n Hold’
mode is selected, then only the
bottom element will heat.
If there is no volt age at the elem ent term inals,
check the voltage at terminal 2 (top) of the
hold thermostat at bottom rear of control panel
(fig 6.3.12). If there is no voltag e then check
wiring.
If the voltage is cor rect, and the ther mostat is
adjusted above ove n temperature, then check
for output voltage at terminal 1 (bottom). If
there is no volt age and the thermos tat will not
switch on then the thermostat is faulty—
replace.
If the voltage is correct but the bottom
element is not working then check wiring.
Revision 2/F3506
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6.2 ACCESS
6.2.1 CONTROL PANEL
1) Open t he oven door . Rem ove micros witch
button by pulling straight off.
2) Undo the two screws now visible.
Microswitch
Button
6.2.3 BAFFLE
1) Remove trays, racks, element cover and
left hand side rack.
2) Undo lamp cover.
Lamp
Cover
Two
Screws
Figure 6.2.1
3) Panel is now free to hinge along right
hand side. When closing the panel
ensure wires and capillary tube are clear
of metal or other terminals.
Figure 6.2.2
6.2.2 SERVICE (REAR) PANEL
1) Undo the four screws holding the panel.
Side
Rack
Figure 6.2.4
3) Remove baffle.
6.2.4 CONTROL PANEL—REAR
Buzzer
Power Switch
Heating Indicator
Grill / Broil Indicator
Thermostat
Bake Time Up
Indicator
Bake Timer (60 minute)
Roast‘n Hold Switch
Mini Contactor
Roast ‘n Hold Time
Up Indicator
Element
Cover
2) Remove panel.
Revision 2/F3506
Figure 6.2.3
Roast Timer (180 minute)
Four
Screws
Steam Switch
Light Switch
Hold Thermostat
Figure 6.2.5
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6.3 REPLACEMENT
6.3.1 LIGHT BULB / GLASS
1) Unscrew lamp cover.
Neon
Wires
Lamp
Cover
Figure 6.3.3
2) From back push neon through front of
panel rotating clockwise.
3) Push ne w neon in f rom fr ont of pan el, a nd
reconnect wires.
Figure 6.3.1
2) Unscrew bulb out of fitting.
3) Screw in replacement bulb.
4) Ensure seal fitted. Screw lamp cover into
holder with baffle fitted (do not over
tighten).
6.3.2 DOOR MICROSWITCH
1) Remove service panel (refer 6.2.2).
2) Remove two screws holding microswitch
to bracket.
Two Screws
Figure 6.3.2
6.3.4 POWER / ROAST / LIG HTS / WATER
SWITCHES
1) With control panel open (refer 6.2.1)
remove the wires from the back of the
switch, noting their positions.
Switch
Wires
Figure 6.3.4
2) From back push switch through front of
panel.
3) Push new switch in from front of panel,
and reconnect wires.
6.3.5 BUZZER
1) Remove control panel (refer 6.2.1).
2) Remove two screws holding buzzer
bracket to panel.
3) Transfer wires to new micro-switch and
re-assemble.
4) Adjust microswitch (refer 6.4.2).
6.3.3 INDICATOR NEON LIGHT
1) With control panel open (refer 6.2.1)
remove the wires from the back of the
neon.
Revision 2/F3506
Two Screws
Figure 6.3.5
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3) Withdraw and remove two scr ews holding
buzzer to bracket.
3) Transfer wires to new timer.
4) Withdraw old timer and insert new timer,
securing with screws.
5) Replace knob.
Two
Screws
Figure 6.3.6
4) Transfer wires to new buzzer.
5) Reassemble in reverse order.
6.3.6 BAKE TIMER
1) Remove bake timer knob by pulling it
firmly away from control panel.
2) Open control panel (refer 6.2.1) an d undo
two screws securing timer.
Two Screws
6.3.8 THERMOSTAT
1) Pull knob off front of thermostat
2) O pen control panel (refer 6.2.1) and undo
two screws securing thermostat.
Two Screws
Figure 6.3.9
3) Transfer wires to new thermostat.
4) Remove service panel (refer 6.2.2) and
from inside of oven loosen two screws
holding thermostat phial bracket.
Figure 6.3.7
3) Transfer wires to new timer.
4) Withdraw old timer and insert new timer,
securing with screws.
5) Replace knob.
6.3.7 ROAST TIMER
1) Remove roast timer knob by pulling it
firmly away from control panel.
2) Open control panel (refer 6.2.1) an d undo
two screws securing timer.
Two Screws
Figure 6.3.8
Two
Screws
Figure 6.3.10
5) Withdraw old thermostat phial through
rear of oven.
6) Remove fibreglass sleeve from old
thermostat and fit it to replacement
thermostat.
Fibreglass Sleeve
Thermostat Phial
Figure 6.3.11
7) Insert new thermostat.
8) Re-assemble in reverse order.
Revision 2/F3506
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6.3.9 HOLD THERMOSTAT
6.3.11 WATER SOLENOID
1) Open control panel (refer 6.2.1) an d undo
two screws securing hold thermostat
bracket.
Two Screws
Figure 6.3.12
2) Transfer wires to new thermostat.
3) Remove service panel (refer 6.2.2) and
from inside of ov en loosen the therm ostat
phial bracket.
1) Ensure water supply is turned off.
2) Inside the oven remove the baffle (refer
6.2.3), then unscrew the water injection
nozzle.
Water Injection
Nozzle
Figure 6.3.15
3) With the service panel removed (refer
6.2.2) remove the wires from the solenoid.
4) Disconnect hose fitting.
5) Unscrew the three screws holding
solenoid bracket to the rear of unit and
remove valve assembly.
Two
Screws
Figure 6.3.13
4) Withdraw old thermostat phial through
rear of oven.
5) Insert new thermostat.
6) Re-assemble in reverse order.
6.3.10 MINI-CONTACTOR
1) Open control panel (refer 6.2.1) and
transfer wires from old mini-contactor to
new contactor.
2) Remove two screws securing old minicontactor to control panel.
Two Screws
Figure 6.3.14
3) Secure new mini-contactor to control
panel using two screws.
Figure 6.3.16
Three Screws
6) On suitable work surface, remove brass
piping connections (1/2” sp anner) and t wo
screws (on bracket) and extract solenoid.
Two
Screws
Brass
Connections
Figure 6.3.17
7) Secure new solenoid with screws, and
re-assemble. Check that f low direction as
marked on valve is corr ect (f low into spr a y
nozzle).
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6.3.12 WATER SOLENOID CLEANING
1) Remove water solenoid (refer 6.3.10).
2) Remove the two screws securing the
bracket to the solenoid.
Two Screws
2) Unscrew the element from inside the
oven.
Top Element
One Screw
Bottom Element
Two Screws
Figure 6.3.18
3) Remove the valve assembly.
Valve Assembly
Figure 6.3.19
4) Clean the valve assembly, removing all
dirt and grime from the valve seat.
5) Reassemble the valve assembly and
solenoid.
6.3.13 SPRAY NOZZLE
1) Inside the oven remove the LH side rack
and baffle (refer 6.2.3) , then unscrew the
water injecti on nozzle.
Figure 6.3.21
3) Pull element carefully to remove.
4) Replace and re-assemble in reverse
order.
Element Ratings ±5%
208 V Top Inner Element 24.5 ohms
Top Outer Element 55.3 ohms
Bottom Element 22.5 ohms
220—240V Top Inner Element 29.5 ohms
Top Outer Element 66.5 ohms
Bottom Element 27.3 ohms
6.3.15 FAN
1) With service panel and baffle removed
(refer 6.2.2 and 6.2.3) undo the centre
nut.
NOTE: LH thread - Turn clockwise to
loosen.
Water Injection
Nozzle
Figure 6.3.20
2) Clean or replace as required, ensuring
debris free on re-assembly.
6.3.14 ELEMENTS
1) With service panel and baffle removed
(refer 6.2.2 and 6.2.3) remove the wires
from the element(s).
Revision 2/F3506
Centre Nut
Figure 6.3.22
2) Replace and re-assemble in reverse
order.
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6.3.16 MOTOR
1) Remove fan (refer 6.3.14) and then
remove the wires that go to the motor.
2) Undo the four screws holding the motor
bracket in place (from the outside) and
remo ve mot or assembly.
3) Remove LH screw whilst supporting the
door. Lift bracket and remove door from
oven.
Screws (4)
60 Hz
Terminal
Neutral
50 Hz
Terminal
Earth /
Ground
Figure 6.3.23
3) Remove three screws holding motor to
bracket and remove motor.
Three Screws
LH Screw
Figure 6.3.26
4) Remove screws securing door handle.
Screws
Figure 6.3.27
5) Remove two screws in top trim and two
screws in bottom trim of door, and r emove
trim panels.
Figure 6.3.24
4) Replace and re-assemble in reverse
order.
5) Ens ure wire c onnecti ons ar e corr ect t o the
voltage supply—60 Hz / 50 Hz (fig 6.3.23)
6.3.17 OUTER GLASS
1) Open door
2) Undo two screws securing Turbofan c over
plate to oven, and remove cover plate.
2 Screws
Figure 6.3.25
Two
Screws
Two Screws
Figure 6.3.28
6) Lift outer glass away from door.
7) To replace, ensure that the two silicone
rubber seals are in place on the left hand
and right hand side of the door frame.
Clean the inside of the glass and refit it,
ensuring that the silicone rubber seals
cover the outer edges of the glass. Refit
the bottom trim.
Revision 2/F3506
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6.3.18 INNER GLASS
6.3.21 DOOR PIVOT BUSHES
1) Remove the outer glass as above.
Uncrimp the retaining lugs of the window
spacer and remove the spacer and glass.
Retaining
Lugs
Figure 6.3.29
2) To replace, ensure the silicone rubber
seal has not been displaced. Clean the
glass and refit it. Place the window
spacer in position and c rimp the retaining
lugs over to hold the glass in place. Refit
outer glass as above.
6.3.19 INNER GLASS SEAL
1) Rem ove door as per steps one to three of
section 6.3.16.
2) Door bushes can now be removed and
replaced.
3) Reinstall door by reversing steps one to
three of section 6.3.16.
Door Pivot
Bush
Figure 6.3.31
1) Remove the door inner glass (refer
6.3.18).
2) The inner glass seal can no w be removed
and replaced.
NOTE:
6.3.20 DOOR SEALS
1) Open oven door.
2) To remove, hold at their centre poin t and
When fitting new seal, ens ure join is
at top of door.
pull forward until they unclip
Door Seals
Figure 6.3.30
3) Refit new seals.
Fit top and bottom seals first, with the
Note:
open side of the seal facing downwards.
Fit side seals with open side facing outwards.
Revision 2/F3506
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6.4 ADJUSTMENT / CALIBRATION
6.4.1 THERMOSTAT CALIBRATION
IMPORTANT: IF THE OVEN
TEMPERATURE NEEDS TO BE
INCREASED, ENSURE THAT THE
THERMOSTAT IS IN THE ‘OFF’ POSITION
BEFORE CARRYING OUT ADJUSTMENT.
IF OVEN TEMPERATURE NEEDS TO BE
DECREASED, ENSURE THERMOSTAT IS
IN THE ‘MAX’ TEMPERATURE POSITION
BEFORE CARRYING OUT ANY
ADJUSTMENT.
Calibration Nut
Thermostat Shaft
Thermostat
Figure 6.4.3
5) Carefully rem ove two sc rews holdin g Gri ll/
Broil switch to thermostat.
HINT:
Tape Grill/Broil switch assembly
together before removal to prevent it from
springing apart.
Screws
Grill/Broil Switch
Thermostat
Figure 6.4.1
1) Turn off power.
2) Remove thermostat knob by pulling it
firmly away from control panel.
3) Open control pan el (refer 6.2.1) . Remove
two screws on control panel holding
thermostat.
Screws
Grill/Broil
Switch
Figure 6.4.4
7) Adjust the calibration nut located at the
base of the thermostat shaft.
To increase oven temperature, turn
calibration nut anticlockwise.
To decrease oven temperature, turn
calibration nut clockwise.
Adjustment of the calibration nut by 1°
angular will alter oven temperature by
approximately 2°C (3.6°F).
Calibration Nut
Figure 6.4.2
4) The thermostat can now be removed.
Revision 2/F3506
Figure 6.4.5
8) Reassemble Grill/Broil switch onto the
thermostat and fit assembly back onto
control panel.
9) Turn on power and recheck oven
thermostat calibration.
10) Repeat procedure if necessary.
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6.4.2 DOOR MICROSWITCH ADJUSTMENT
6.4.4 HOLD TEMPERATURE ADJUSTMENT
1) Open oven door.
2) Remove service panel (refer 6.2.2).
3) With fingers, bend actuator arm of
microswitch so that s witch operates when
door is in closed position.
Actuator Arm
Figure 6.4.6
6.4.3 DOOR ALIGNMENT
1) Alignment of the do or can be achieved b y
loosening the two hex head bolts securing
the bottom plate to the oven body. The
plate may now be moved sidewa ys or in /
out to achieve correct door alignment.
(Door should be parallel to bottom plate
and touching oven seal evenly). When
correct tighten bolts.
1) The hold temperature of the oven c an be
adjusted by turning the hold thermostat
dial to the desired hold tem perature. T his
dial is located inside the control panel.
Hold Thermostat
Dial
Figure 6.4.9
6.4.5 60 MINUTE TIMER ZERO POSITION
ADJUSTMENT
1) Remove 60 m inute t imer knob b y pullin g it
firmly away from control panel.
2) Open control panel (refer 6.2.1). Loosen
two screws on control panel holding 60
minute timer.
Two Screws
Two Hex Head Bolts
Figure 6.4.7
2) To adjust the door catch, loosen locknut
and turn the slot (using the tool supplied
with the unit); anticlockwise to increase
roller height, clockwise to decrease roller
height.
Adjustment
Tool
Locknut
Figure 6.4.8
Revision 2/F3506
Figure 6.4.10
3) T he timer can now be r otated as required
to ensure that the buzzer sounds at the
zero position.
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7. ELECTRICAL CIRCUIT SCHEMATIC
Revision 2/F3506
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8. ELECTRICAL WIRING DIAGRAM
Revision 2/F3506
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9. SPARE PARTS
PART NO DESCRIPTION
CONTROLS
021473 Switch - Power
017121 Thermostat
020823 Knob - Thermostat / Bake Timer
020849 Neon Indicator
011760 Bake Timer
011794 Buzzer
021476 Switch - ‘Roast n Hold’
011419 ‘Roast n Hold’ Timer
021472 ‘Roast n Hold’ Timer Knob
021474 Switch - Steam / Light
022281 Relay
018223 Hold Thermostat
002990 Microswitch
003002 Oven Lamp Glass
003434 Silk Gasket
013521 Oven Lamp - 40W Min. Edison Screw
MOTOR & ELEMENTS
003113 Oven Top Element 208 Volts
003114 Oven Bottom Element 208 Volts
011604 Oven Top Element 240 Volts
003074 Oven Bottom Element 240 Volts
013431 Fan Motor
013432 Oven Fan
STEAM SYSTEM
012781 Water Solenoid
DOOR
014225 Oven Door Seal Strip Side
014226 Oven Door Seal Strip Top / Bottom
021469 Handle Assembly
021468 Handle
021465 Handle Bracket
021444 Door Outer Glass
002340 Door Inner Glass
011005 Door Catch
013610 Door Bush
RACKS
003382 Oven Side Rack
012809 Oven Rack
Revision 2/F3506
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10. ACCESSORIES
OVEN RACKS (PART NO 12809)
SCONE TRAYS (PART NO 02083)
100 MM (FOUR INCH) FOOT OPTION
(PART NO 13048)
25 MM (ONE INCH) FOOT OPTION (PART
NO 13908)
A25 STAINLESS STEEL STAND
Revision 2/F3506
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11.1 MAIN ASSEMBLY
11. PARTS DIAGRAMS
Revision 2/F3506
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Pos Part No. Description
1 021533 WRAPPER
2 090406 INSULATION
3 013011 COVER PANEL
4 013012 COVER PANEL PLATE
5 011412 MICROSWITCH BRACKET
6 011389 MICROSWITCH INSULATOR
7 002990 MICROSWITCH
8 003012 ACTUATOR ROD
9 011414 VENT TUBE
10 003016 MOTOR MOUNTING PLATE
11 013431 MOTOR
12 012782 HOSE CONNECTOR
13 011634 ELBOW
14 012781 SOLENOID VALVE
15 019208 SOLENOID MOUNTING BRACKET
16 012784 SOLENOID EXTENSION
17 012785 INJECTOR
18 011404 L.H OVEN SUPPORT
19 013586 TERMINAL BLOCK
20 002138 CABLE CLAMP
21 002441 INSULATOR
22 018251 CABLE ENTRY CLAMP BRACKET
23 013053 BODY
24 013048 LEG - 4" (100 mm)
013908 FOOT ASSEMBLY - 1" (25 mm)
25 004594 COUNTERWEIGHT (UK ONLY)
26 017770 PHIAL GUARD
27 004004 OVEN INNER
28 011413 R.H OVEN SUPPORT
29 011407 SIDE INSULATION PANEL
30 013520 OVEN LIGHT ASSEMBLY
003434 SILK GASKET
013521 LAMP 40W
003002 LIGHT GLASS
31 013432 FAN
32 004005 FAN BAFFLE (ALL MARKETS EXCEPT UK)
004595 FAN BAFFLE (UK ONLY)
33 003123 BAFFLE BRACKET
34 003113 TOP ELEMENT 208 - 220V
011604 TOP ELEMENT 230 - 240V
35 003074 BOTTOM ELEMENT 230 - 240V
003114 BOTTOM ELEMENT 208 - 220V
36 003219 ELEMENT SUPPORT
37 002083 SCONE TRAY (UK ONLY)
38 012809 OVEN RACK
39 003382 OVEN SIDE RACK (ALL MARKETS EXCEPT USA/CANADA )
012798 OVEN SIDE RACK (USA/CANADA ONLY)
40 012787 WATER TROUGH
41 003057 BOTTOM ELEMENT GUARD
42 014225 OVEN SEAL ASSEMBLY - VERTICAL
003028 VERTICAL SEAL - 455mm
43 014226 OVEN SEAL ASSEMBLY - HORIZONTAL
003038 HORIZONTAL SEAL - 508mm
44 004731 PIVOT COVER - TOP
45 011422 PIVOT SUPPORT - TOP ASSEMBLY
46 021528 TOP TRIM
47 004006 DOOR INNER
Revision 2/F3506
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48 021465 HANDLE BRACKET (HANDLE ASSEMBLY 021469)
49 021468 HANDLE (HANDLE ASSEMBLY 021469)
50 ---------- CONTROL ASSEMBLY (SEE SECT ION 1.2.1)
51 021530 BOTTOM TRIM
52 013610 DOOR BUSH (ALSO USED ON CONTROL PANEL PIVOT)
53 011424 PIVOT SUPPORT - BOTTOM ASSEMBLY
54 002340 DOOR INNER GLASS
090200 SILICON EXTRUSION - 1.74M
55 004452 DOOR GLASS CLAMP ANGLE
56 021444 DOOR OUTER GLASS
090225 SILICON EXTRUSION - 0.96M
Revision 2/F3506
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11.2 CONTROL PANEL ASSEMBLY
Revision 2/F3506
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Pos Part No. Description
1 018224 HOLD THERMOSTAT KNOB
2 018223 HOLD THERMOSTAT
3 021538 HOLD THERMOSTAT BRACKET (AFFIX 018209 LABEL)
4 017121 THERMOSTAT 50-300 ºC
5 011760 TIMER - 1 Hr
6 011419 TIMER - 3 Hr (240V 50 Hz)
011983 TIMER - 3 Hr (240V 60 Hz)
7 022281 CONTACTOR
022282 CONTACTOR KIT (REPLACES 22199 & 21491 RELAYS) (PRE S/N
42473)
8 021536 CONTACTOR BRACKET
9 018789 BALL CATCH PLATE
10 011005 BALL CATCH & LOCKNUT
11 021442 TIMER MOUNTING PANEL
12 011794 BUZZER
13 021537 BUZZER MOUNTING BRACKET
14 004722 CONTROL PANEL BAKBAR °C
004803 CONTROL PANEL BLUE SEAL °C
004729 CONTROL PANEL MOFFAT °F
15 013610 DOOR BUSH
16 021474 LIGHT / STEAM SWITCH
17 020823 THERMOSTAT / TIMER KNOBS
18 020849 PILOT LIGHT
19 021476 ROAST ‘N’ HOLD SWITCH
20 021473 POWER SWITCH
Revision 2/F3506
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11. SERVICE CONTACTS
AUSTRALIA
VICTORIA HEAD OFFICE AND MAIN WAREHOUSE
740 Springvale Road Tel (03) 9518 3888
Mulgrave VIC 3170 Fax (03) 9518 3838
Spare Parts Department Free Call 1800 337 963
Fax (03) 9518 3895
NEW SOUTH WALES
Unit 8/142 James Ruse Drive
Rosehill NSW 2142
Spare Parts Free Call 1800 337 963
Fax (03) 9518 3895
QUEENSLAND
30 Prosperity Place
Geebung QLD 4034
Spare Parts Free Call 1800 337 963
Fax (03) 9518 3895
SOUTH AUSTRALIA
Suite 8/71 Fullarton Rd Tel (08) 8431 0522
Kent Town SA 5067
Spare Parts Free Call 1800 337 963
WESTERN AUSTRALIA
PO Box 689 Tel (08) 9305 8855
Joondalup Business Centre WA 6027
Spare Parts Free Call 1800 337 963
NATIONAL COVERAGE FOR 24 HOUR SERVICE OR MAINTENANCE DIAL
FREE CALL 1800 622 216 (AUSTRALIA ONLY)
CANADA
Lessard Agencies Limited Tel (416) 766 2764
PO Box 97 Fax (416) 760 0394
Stn “D” Free Call 1 888 537 7273
Toronto, ONT M6P 3J5
NEW ZEALAND
CHRISTCHURCH
16 Osborne St Free Call 0800 Moffat
PO Box 10-001 (0800 663 328)
Christchurch
Spare Parts Tel (03) 389 1007
Fax (03) 389 1276
AUCKLAND
4 Waipuna Road Tel (09) 574 3150
Mt Wellington Fax (09) 574 3159
Auckland
Spare Parts Free Call 0800 Moffat
(0800 663 328)
Revision 2/F3506
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UNITED KINGDOM
BLUESEAL LTD
Units 6-7 Mount St Tel 0121-327 5575
Business Park Fax 0121-327 9711
Birmingham B7 5QU
England
UNITED STATES OF AMERICA
MOFFAT INC.
3765 Champion Blvd
Winston-Salem Tel 1-800-551 8795
NC27115 Fax 336 661 9546
NATIONAL COVERAGE FOR SERVICE OR MAINTENANCE DIAL
FREE CALL 1800 551 8795 (USA ONLY)
Revision 2/F3506
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APPENDIX A. POWER RELAY UPGRADE KIT
Kit Includes
1 x Power relay
2 x Screw - 8 x
1 x 160mm black wire
1 x 180mm red wire
1 x 950mm red wire
1 x 1050 red wire
Assembly Instructions: (THE ELECTRICAL SUPPLY MUST BE DISCONNECTED)
1) Remove the rear service panel.
2) Mark and drill 2x ø3.5mm holes as per
figure A.1.
3) Mount relay to holes with 2 screws
provided.
(NOTE: Terminals on relay must face
upwards).
4) Connect 160mm black wire to vacant
neutral (L2) term inal on terminal bloc k and
to terminal B on relay.
3
/8 truss
5) Connect short (180mm) red wire to vacant
phase (L1) terminal on terminal block and
to terminal 7 on relay.
6) Connect long thick red wire (950mm) to
power relay term inal 4 and remaining long
thin wire (1050mm) to relay terminal A.
Feed these wires through the plastic bush
in the rear of the oven and into the control
cavity.
7) Loosen screws and open the control panel.
8) Units with mini-contactor:
Remove and discard wire from terminal 2
on the power switch to terminal 21 on the
mini contactor inside the control panel.
Locate end of thick red wire previously fed
into control cavity and connect to terminal
21 of the contactor.
Units with ‘Schrack’ relay:
Remove and discard wire from terminal 2
on the power switch to terminal 7 on the
‘Schrack’ relay inside the control panel.
Locate end of thick red wire previously fed
into control cavit y and conn ect to t erm inal 7
of the ‘Schrack’ relay.
64
85
185
Figure A.1
Power switch
Mini-contactor
9) Locate long thin red wire and connect to
terminal 2 on the power switch.
10) Close and fasten control p anel taking care
not to trap any wires.
11) Replace and fasten rear service panel.
Revision 2/F3506
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Figure A.2
Page 44
Units fitted with mini-contactor:
Units fitted with ‘Schrack’ relay:
33
BUZZER
22
23
TOP
ELEMENT
45
37
44
32
31
HEAT
GRILL
28
21
27
P5
2
24
T/STAT
5
6
1
P6
26
11
12
33
POWER
3
4
2
1
52
1
22
34
35
40
47
N
39
38
E
P
9
20
23
4
1hr TIMER
1
2
3
TIME
25
UP
15
35
31
2
2
3
25
14
13
50
76341
A
9
B
SCHRACK RELAY
30
24
11
FAN MOTOR
COM
MICROSWITCH
14
13
12
ROAST
29 15 49
40
47
1
E
3
4
60Hz
50Hz
10
9
6
NO
NC
8
19
20
46
BOTTOM
ELEMENT
36
45
48
WATER
SOLENOID
48
41
36
37
44
7
4
1
5
2
3hr TIMER
6
3
17
17
3
4
3
4
2
1
HOLD
LIGHT
WATER
21
LIGHTS
2 1
5 4
8
6
18
19
HOLD
T/STAT
525150
7
A
31649
B
POWER RELAY
7
515353
Ø
N
E
42
MAINS
TERMINAL BLOCK
1
29
43
Revision 2/F3506
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