turbofan E20D Series User manual

Service Manual
E20D Series
(Digital Operation)
20D SERIES
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1

Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
The reproduction or copying of any part of this manual by any means whatsoever is strictly forbidden unless authorized previously in writing
by the manufacturer.
In line with policy to continually develop and improve its products, Moffat Ltd. reserves the right to change the specifications and design
without prior notice.
© Copyright Moffat Ltd. February 2016.
MANUFACTURED BY
Moffat Limited
Rolleston 7675
New Zealand
INTERNATIONAL CONTACTS
AUSTRALIA
Moffat Pty Limited
Web: www.moffat.com.au
E.Mail: [email protected]
Main Office: (tel) [phone]
(fax) [phone]
Service: (tel): 1800 622 216
Spares: (tel): 1800 337 963
Customer Service: (tel): 1800 335 315
(fax): 1800 350 281
CANADA
Serve Canada
Web: www.servecanada.com
E.Mail: [email protected]
Sales: (tel): 800 551 8795 (Toll Free)
Service: (tel): 800 263 1455 (Toll Free)
NEW ZEALAND
Moffat Limited
Web: www.moffat.co.nz
E.Mail: [email protected]
Main Office: (tel): 0800 663328
UNITED KINGDOM
Blue Seal
Web: www.blue-seal.co.uk
E.Mail: [email protected]
Sales: (tel): [phone]
(fax): [phone]
Spares: (tel): [phone]
(fax): [phone]
Service: (tel): [phone]
(fax): [phone]
UNITED STATES
Moffat
Web: www.moffat.com
Sales: (tel): 1800 551 8795 (Toll Free)
(tel): [phone]
(fax): [phone]
Service: (tel): 866 673 7937 (Toll Free)
(tel): [phone]
(fax): [phone]
REST OF WORLD
Moffat Limited
Web: www.moffat.co.nz
E.Mail: [email protected]

Contents List
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
E20D Series Turbofan Convection Ovens.
Model Numbers Covered in this Manual
E23D3 - Turbofan Oven - 3 Tray Convection Oven.
E27D2 - Turbofan Oven - 2 Tray Convection Oven.
E27D3 - Turbofan Oven - 3 Tray Convection Oven.
E28D4 - Turbofan Oven - 4 Tray Convection Oven.
Introducon............................................................................................................................2
Safety Informaon
Specificaons..........................................................................................................................3
Installaon.............................................................................................................................6
Installaon Requirements
Unpacking
Locaon
Clearances
Stand Mounted Ovens
Electrical Connecon
Water Connecon
Recommended Water Specificaons
Posioning and Levelling of Oven
Inial Start‐Up
Operaon...............................................................................................................................8
Operaon Guide
Manual Mode
Steam Mode
Changing Operator Sengs
Operator Sengs Table
FaultFinding.........................................................................................................................11
Operaonal Faults
Element Resistance and Current Table
ServiceProcedures................................................................................................................13
Replacement
Adjustment and Calibraon
ServiceParameters...............................................................................................................29
Viewing / Changing Service Parameters
Table of Service Parameters
ElectricalSchemacs.............................................................................................................31
WiringDiagrams...................................................................................................................34
ExplodedPartsList................................................................................................................38
Accessories...........................................................................................................................44
ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY.
IMPROPER INSTALLATION, ALTERATION, ADJUSTMENT, MAINTENANCE OR SERVICE MAY CAUSE PROPERTY
DAMAGE, INJURY OR DEATH.
ENSURE SUPPLY IS SWITCHED OFF BEFORE SERVICING.
ALWAYS TEST AFTER SERVICE REPAIRS.
WARNING:

Introduction
2
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
Before using your new oven, please read this instruction manual
carefully, pay particular attention to any information labelled
‘WARNING’, ‘CAUTION’, ‘IMPORTANT’ or ‘NOTE’ in this
manual.
Indicates a hazardous situation
which, if not avoided, will result in
death or serious injury.
Indicates a hazardous situation
which, if not avoided, will result in
minor or moderate injury.
If you are unsure of any aspect of the installation, instructions or
performance of your oven, contact your TURBOFAN dealer promptly.
In many cases a phone call could answer your question.
Should you contact your TURBOFAN dealer on any matter
concerning this oven, please have the information provided
opposite, readily available.
Caution
Warning
Model Number:
Serial Number:
Dealer:
Service Provider:
Date Installed:
Date Purchased:
This manual must be kept by the owner for future reference.
A record of the
Date of Purchase, Date of Installation and
Serial Number of the oven should be recorded in the area
provided below.
The serial number of this oven can be found on the
Technical Data Plate located on the front right hand side
panel, see diagram in ‘Installation Section’.
Safety Information
For your safety, please pay attention to the following symbols
marked on the appliance.
- RISK OF ELECTRIC SHOCK.
No user serviceable parts inside.
Qualified service person access only.
Disconnect from power before servicing.

Specifications
3
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
E23D3

Specifications
4
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
E27D2 / E27D3

Specifications
5
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
Oven Power Ratings
Oven Tray Details
Tray Capacity Tray Spacing
E23D3
208V, 1P+N+E, 50-60 HZ, 2.7 kW
220V, 1P+N+E, 50-60 HZ, 3.0 kW
230-240V, 1P+N+E, 50-60 HZ, 3.0 kW
E23D3
3 x EN 2/3Tray
3 x US ½ Pan 85mm / 3 1/3”
E27D2
208V, 1P+N+E, 50-60HZ, 2.7kW
220V, 1P+N+E, 50-60HZ, 3.0kW
230-240V, 1P+N+E, 50-60HZ, 3.0kW
E27D2
2 x EN 600 x 400mm Tray
2 x US Full Pan 110mm / 4 1/3”
E27D3
208V, 1P+N+E, 50-60HZ, 4.2kW
220V, 1P+N+E, 50-60HZ, 4.7kW
230-240V, 1P+N+E, 50-60HZ, 4.7kW
E27D3
3 x EN 600 x 400mm Tray
3 x US Full Pan 85mm / 3 1/3”
E28D4
208V, 1P+N+E, 50-60HZ, 5.4kW
220V, 1P+N+E, 50-60HZ, 6.0kW
230-240V, 1P+N+E, 50-60HZ, 6.0kW
E28D4
4 x EN 600 x 400mm Tray
4 x US Full Pan 76mm / 3 ”
E28D4

Oven Specifications Tables:-

Installation
6
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
Installation Requirements
Unpacking
1. Remove all packaging and transit protection including all
protective plastic coating from the exterior stainless steel
panels.
2. Check the oven and supplied parts for damage. Report any
damage immediately to the carrier and distributor.
3. Check that the following parts have been supplied with your
oven:-
4 x Leg Adjustable.
Brass Adaptor.
Rubber Washer.
4. Report any deficiencies to the distributor who supplied your
oven.
5. Securely fit the 4 legs supplied with the oven.
6. Check that the available electrical supply is correct to that
shown on the Technical Data Plate located on the front right
hand side panel.
 Refer to ‘Specifications’ section, ‘Oven
Specifications Tables’.
Location
1. Position the oven in its approximate working position.
2. The unit should be positioned so that the control panel and
oven shelves are easily reachable for loading and unloading.
Clearances
To ensure correct ventilation for the motor and controls, the
following minimum installation clearances are to be adhered to:-
Top 200mm / 8”.
Rear 25mm / 1”.
Left-hand side 25mm / 1”.
Right-hand side 25mm / 1”.
CLEARANCE FROM SOURCE OF HEAT.
A minimum distance of 300mm (12”) from the appliance
sides is required.
Stand Mounted Ovens
For ovens that are to be mounted to a stand, the oven feet are
used to level the oven on the stand. Refer to the instructions
supplied with separately ordered stands for mounting details.
Important:
The vent located at the rear of the oven must NOT be
obstructed.
Important:
 Installation shall comply with local electrical, health and safety requirements.
 It is most important that this oven is installed correctly and that oven operation is correct before use.
 If you have any questions regarding the proper installation and / or operation of this oven, please contact your local
Turbofan distributor.
Oven Vent Location
Oven
Serial Number
*******
*******
230 - 240 3.0
240
12.5
Current Draw
Oven
Model Number
Electrical Power
Rating
Technical Data Plate - Data and Location
(example only)
USA / Canada / Mexico only.

Installation
7
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
Water Connection
NOTE: If the Steam Mode cooking option is not required,
the oven does not need to be connected to a water
supply.
1. Connect a cold water
supply to the water inlet
(R ¾” Connector) at the
rear of the oven.
- Max Inlet Pressure 80psi / 550kPa.
2. Turn ‘On’ the water supply and check for leaks.
Recommended Water Specifications
In order to prevent corrosion or scaling in the oven and water
system due to supplying water that is either too soft or too hard,
the following recommendations should be used as a guideline.
Hardness: Between 60 and 90ppm.
PH: Greater than 7.5.
Chlorides: Less than 30 ppm.
Positioning and Levelling of Oven
Correctly locate the oven into its final operating position and using
a spirit level, adjust the legs so that the oven is level and at the
correct height.
Initial Start-Up
Before using the new oven;
1. For first time use of the oven, operate the oven for about 1
hour at 200°C / 400°F to remove any fumes or odours which
may be present.
2. Please refer to the Installation and Operation Manual supplied
with this appliance for details on how to correctly operate and
shutdown the oven.
Electrical Connection
Each oven should be connected to an adequately protected power
supply and an isolation switch mounted adjacent to, but not
behind the oven and must be readily accessible to the operator.
This switch must be clearly marked and readily accessible in case
of fire.
Check the electricity supply is correct to as shown on the
Technical Data Plate on front right hand corner of oven side panel.
OvensSuppliedwithCordsets
1. Ensure that the oven is fitted with the appropriate power cord
and plug.
OvensSuppliedwithoutCordsets
NOTE: All electrical connections must only be carried out
by a suitably qualified person.
1. Remove oven rear cover panel.
2. Bring the supply cable up through
the grommet at rear of oven and
through the compression gland on
the electrical switchgear panel.
3. Connect the mains supply to the
appropriately marked terminals on
the terminal block.
E23D Ovens.
E27D / E28D Ovens.
NOTE:
 Fixed wiring installations must incorporate an all-pole
disconnection switch.
THIS OVEN MUST BE EARTHED / GROUNDED.
IFTHE SUPPLY CORD IS DAMAGED, IT MUST BE REPLACED BY A
SUITABLY QUALIFIED PERSON IN ORDER TO AVOID AHAZARD.
Warning
Cable Clamp
Power Cable
Electrical Connector Block
Cable Clamp
Power Cable
Electrical Connector Block

Operation
8
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
Operation Guide
 This oven is intended for use in a commercial kitchen and must only be put to the use for which it was intended, i.e. Cooking food
SOME PARTS OF THIS OVEN WILL BECOME VERY HOT DURING USE
AND COULD CAUSE BURNS IF TOUCHED.
Warning
TAKE CARE WHEN OPENING THE OVEN DOOR DURING BAKING. LET
THE HOT AIR AND STEAM ESCAPE BEFORE REMOVING OR REPLACING
FOOD AS THE STEAM PRODUCED CAN CAUSE STEAM BURNS.
Warning
Temp Knob
Temp knob is used;
To adjust the settings shown on the Left Display.
Left Display
Manual Mode;- shows set oven temperature.
When used with ‘Temp’ Key, display shows Actual Oven
Temp for 5 seconds.
Program Mode;- shows program number.
When used with the ‘Temp’ key, display shows set and
actual oven temperature for 4 seconds.
‘Steam’ Key and LED
Press Steam Key to initiate steam injection.
LED is illuminated during steam injection.
‘Program’ Key and LED
Press Program Key to access Program Mode.
LED is illuminated whilst in Program Mode.
‘Temp’ Key and LED
In Manual Mode;- Press Temp Key to display oven actual
temperature.
LED flashes when showing actual temp.
In Program Mode;- Press Temp Key to display oven set
and actual temperature.
LED flashes when showing set and actual temp.
LED remains ‘On’ when heating element is ‘On’ (Heating
Indicator).
Timer Knob
Timer knob is used;
To adjust the settings shown on the Right Display.
Right Display
Shows cook time.
‘On/Off’ Key and LED
Press the ‘On/Off’ key once to turn the oven ‘On’.
Press and hold ‘On/Off’ key for 1.5 seconds to turn the
oven ‘Off’.
LED is illuminated when oven is ‘Off’ (Stand-by).
‘Light’ Key and LED
Press to switch oven lights ‘On/Off’. LED is ‘On’ when
oven light is ‘On’.
Refer to Section ‘Controller Operator Settings’ for ‘Light
Auto-Off’ settings.
NOTE: Oven light will turn ‘On’ (overriding ‘Auto-Off’
setting) whenever a timer is running.
‘Timer-Start / Stop’ Key and LED
Press the ‘Timer-Start/Stop’ key once to start the timer.
Press and hold the ‘Timer-Start/Stop’ key for 3 seconds to
cancel the timer.
LED is illuminated whilst timer is running.

Operation
9
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
Manual Mode
In Manual Mode the oven settings are.
- Temperature - 60-260C / 140-500F.
- Timer - 0-180min or Infinite.
- Steam - St0 - St5.
Program Mode
In Program Mode 20 Programs can be programmed.
Up to 3 cooking stages can be set in each of the programs.
In each stage the following settings are possible.
- Temperature - 60-260C / 140-500F.
- Time - 0-180min or Infinite.
- Steam - St0 - St5.
- End of stage alarm - On / Off.
Steam Mode
The steam function can be used in two different ways.
The ‘Operator Setting’ StE determines the function.
(Refer to the ‘Controller Operator Settings’ section for details on
how to change the settings).
 With StE = 0, the steam key operates as a momentary key,
steam is injected into the oven for as long as the key is
pressed. This is the Default Setting.
 With StE = 1 to 5, the steam key will start a sequence of
steam pulses, with 1 to 5 being the number of pulses.
Additionally, with StE = 1 to 5, the steam level setting can be
quickly changed by holding the steam key for three seconds
and choosing level St1 to St5.
In Program Mode:
Each stage of a program can be set to steam level St0 to St5.
Steam level St0 means that there is no automatic steaming in the
program / stage. Steam can be manually injected at any time
during program cooking.
Steam levels St1 to St5 means the program / stage starts with a
sequence of steam pulses. Steam can be manually injected at any
time after the automatic steaming is finished.
If StE = 0: Hold steam key for steam.
If StE = 1 to 5: Press steam key to start a steam sequence.
Quick access to levels St1 to St5 is also available when in Program
Mode when StE = 1 to 5.
For more information on setting steam levels in programs, refer to
the ‘Programming’ section of this manual.
In Manual Mode / Cooking with Timer:
Steam can be injected at any time.
If StE = 0: Hold steam key for steam.
If StE = 1 to 5: Press steam key to start a steam sequence.
NOTE: When using the steam functions, if the Oven
Temperature is BELOW 100°C (212°F), water may
pool in oven as temperature will be too low to create
steam.
(Steam Mode is available by default - to disable the Steam Mode,
enter the ‘Operator Settings’ and change the enable steam function
ESt to ‘no’.
Refer to section ‘Controller Operator Settings’ for further details).

Operation
10
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
Changing Operator Settings
NOTE: Oven must be in ‘Stand-By’ Mode to access operator settings (i.e. Power to oven but both displays are blank and ‘On/Off’
LED is ‘On’).
1. ENTERING THE OPERATOR SETTING MODE.
Press and hold 'Steam' and ‘Timer-Start/Stop’ keys together for 3 seconds.
Left Display will show .
Right Display will flash .
2. ENTERING PASSWORD (OPERATOR PASSWORD - 123).
Rotate ‘Timer’ knob to enter password .
Press ‘Light’ key to confirm password.
Left Display will show one of the operator settings, eg.
Right Display will show the value of the setting, eg.
3. CHANGING THE SETTINGS.
Rotate ‘Timer’ knob to reach the setting to be adjusted.
Press ‘Light’ key to confirm setting to be adjusted. Right Display will flash.
Rotate ‘Timer’ knob to select value required.
Press ‘Light’ key to confirm value. Right Display will stop flashing.
See below for a list of Operator Settings available
4. EXITING THE OPERATOR SETTING MODE.
Press ‘On-Off’ key, to exit the Operator Settings Mode and to return to Stand-By Mode.
Operator Settings Table
Setting Description
Value Range Default
Value
Oven Pre-Heat - Automatic Pre-Heat Temperature on oven start-up. 60 - 260°C
(140 - 500°F)
150ºC
(325ºF)
Light Auto ‘Off’ Setting Time -
0 = Light turned off manually (No Auto Off).
1 = 1 minute auto ‘Off’.
2 = 2 minutes auto ‘Off’, etc.
0 - 60 mins 2
Enable Steam - Activates / deactivates steam-related features. ‘YES’ or ‘no’ YES
Alarm Volume - Can be adjusted to suit operators preference. 0 - 10 5
Program Pre-Heating Condition - Increases Pre-heating ‘Ready’ Temperature above Program Set
Temperature in ‘Program’ Mode to allow for heat loss when loading oven.
0 - 30°C
0 - 54°F 0
Multi-Stage Enable - Activates / de-activates multi-stage programming. ‘YES’ or ‘no’ YES
StE = 0 Steam Key operates as a momentary key, steam is injected into oven for as long as the key
is pressed.
StE = 1 - 5 Steam Key will start a sequence of steam pulses from 1 to 5.
0 - 5 0

Fault Finding
11
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
Fault Possible Causes Remedy
Oven does not operate / display blank /
Stand-By LED Off.
Mains isolating switch, circuit breaker or
fuses are 'Off' at the power board.
Overtemp tripped.
Overtemp.
Transformer.
Controller.
Turn 'On' isolating switch. Check circuit
breaker / fuses.
Reset Overtemp located at rear of oven. (Push
in red button).
Check output from overtemp. If no output,
replace overtemp.
Confirm power input to transformer.
Check power output from transformer. If no
power output, replace transformer.
Check power input from overtemp.
Check power input from transformer. If both
power inputs are satis, replace controller.
‘dor’ on display. Door open.
Door / hinges obstructed
Door hinges worn / faulty.
Door faulty and does not close properly.
Door microswitch out of adjustment.
Door microswitch faulty.
Close door.
Clear obstruction.
Replace both hinges.
Door damaged, replace door.
Adjust door microswitch.
Check continuity through microswitch, if faulty,
replace.
‘Err 001’ on displays. Oven Temperature Probe faulty. Replace oven temperature probe.
‘Err 003’ on displays. Wiring faulty. Missing loop wire on
controller between terminals COM and
ID2.
Check plug connections to controller are secure
and not damaged.
Oven heats up but fan does not operate. Capacitor faulty.
Fan Motor faulty.
Controller faulty.
Check and replace if faulty.
Replace fan motor.
Replace controller.
Oven Fan operates but no heating in
oven.
Heating relay faulty.
Element faulty.
Controller faulty.
Replace heating relay.
Replace element.
Check ‘Heat’ output from controller. If no
output, Controller faulty, replace.
‘Est’ on display when pressing steam key. Steam function disabled. Enable steam. Refer to ‘Controller Operator
Settings’.
Oven does not Steam. Water turned ‘Off’ at mains supply.
Injector nozzle blocked.
Water solenoid faulty.
Controller faulty.
Turn ‘On’ water at mains supply.
Unblock Injector Nozzle.
Replace water solenoid.
Check steam output from controller to solenoid.
If no output. Replace controller.
Oven light not illuminating. Blown bulb.
Blown fuse (E27D3 and E28D4 only).
Replace bulb.
Replace fuse.
Operational Faults

Fault Finding
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Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
ELEMENT RESISTANCE AND CURRENT
Model Watts Voltage Resistance ± 5% @20oC (68oF) Current ± 5%
E23D3 2800W 230 - 240V 20.5 Ω11.7A @ 240V
2800W 200 - 220V 17.3 Ω12.7A @ 220V
E27D2 2800W 240V 20.5 Ω11.7A @ 240V
2800W 220V 17.3 Ω12.7A @ 220V
E27D3 4500W 230 - 240V 12.8 Ω18.8A @ 240V
4500W 208 - 220V 10.7 Ω20.5A @ 220V
E28D4 2800W x 2 230 - 240V 20.5 Ωeach 11.7A @ 240V each
2800W x 2 208 - 220V 17.3 Ωeach 12.7A @ 220V each
Fault Possible Causes Remedy
Uneven cooking. Too high a temperature selected.
Oven or racks not level.
Insufficient air space around trays or
baking tins.
Oven overloaded with product.
Opening oven door un-necessarily.
Oven door seal damaged or faulty.
Oven vent restricted.
Fan motor not operating in both directions.
Controller faulty.
Capacitor faulty.
Fan Motor faulty.
Select a lower temperature.
Check oven and racks and level.
Ensure oven racks are spaced to allow air flow
around all shelves.
Re-load oven.
Ensure oven door remains closed where
possible.
Check seals and replace if damaged.
Ensure oven vent is not blocked or shrouded.
Check motor output from controller. If no
output, replace controller.
Check and replace capacitor if faulty.
Replace fan motor.
Operational Faults (Cont’d)
Element Resistance and Current Table

Service Procedures
13
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
5.1 Replacement
5.1.1 Control Panel /
Controller Front Display Board /
Rear Control Board / .............................................................................................................................14
5.1.2 Time / Temp Encoders ..........................................................................................................................15
5.1.3 Capacitor’s /
Heating Relay /
Transformer /
Fuse (E27D3 / E28D4 Only) /
Fuse Holder (E27D3 / E28D4 Only) ........................................................................................................16
5.1.4 Overtemp Thermostat /
Temperature Probe ...............................................................................................................................17
5.1.5 Fan / Fan Motor ....................................................................................................................................19
5.1.6 Element(s)............................................................................................................................................21
5.1.7 Water Solenoid /
Spray Nozzle.........................................................................................................................................22
5.1.8 Door Removal /
Door Hinges /
Door Inner Glass...................................................................................................................................24
5.1.9 Door Microswitch ..................................................................................................................................25
5.1.10 Oven Light Fixture ................................................................................................................................26
5.2 Adjustment and Calibration
5.2.1 Door Microswitch ..................................................................................................................................28
5.2.2 Temperature Calibration ........................................................................................................................ 28

Service Procedures
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Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
5.1 Replacement
5.1.1 Control Panel /
Controller - Front Display Board /
Rear Control Board.
To remove the Control Panel:-
1. Remove 2 screws on underside of control panel and remove
panel.
To remove the Rear Access Panel:-
1. Remove 4 screws securing the
rear vent shroud and remove
the shroud.
Screws
Remove
Screws
Vent Shroud
2. Remove screws securing the rear access panel and remove
panel. Screws at bottom of panel only require just loosening as
panel is slotted to ease re-fitting.
To remove the Controller - Front Display Board:-
1. Using pliers, carefully compress the 4 plastic fasteners securing
the cover over the front display board and remove the cover.
2. Undo securing 8 nuts and remove front display board.
3. At the rear of the oven, disconnect ribbon cable at the rear
control board and pull ribbon cable through to front of oven.
Remove 8 Nuts
Ribbon Cable
Plastic Fasteners
Just Loosen Screws
Remove Screws
Remove Screws
Ribbon Cable
Front Display Board
Rear Control Board
Rear Control Board Disconnect Ribbon Cable

Service Procedures
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Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
To remove the Rear Control Board:-
 Note position of connectors before disconnecting plugs
from control board.
1. Disconnect plugs from the rear control board.
2. Using pliers, carefully compress the 8 plastic fasteners securing
the rear control board to the electrical panel and remove the
rear control board.
3. Fit replacement rear control board to the electrical panel.
4. Re-connect plugs to rear control board, noting position of
connectors when re-fitting.
5.1.2 Time - Temp Encoders.
1. Remove 2 screws on underside of control panel and remove
control panel.
2. Using pliers, carefully compress the 4 plastic fasteners securing
the cover over the front display board and remove the cover.
3. Pull off the Timer and Temp
control knobs from the
control panel. These are a
push fit.
4. Remove 2 securing screws
and knob stop plate.
5. Unplug cables from encoder
and remove encoder from
rear of control panel.
6. Refit in reverse order.
Encoder Disconnect
Plug
Remove
Screws
Stop Plate
Time and Temp Encoders
Screws
Plastic Fasteners

Service Procedures
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Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
5.1.3 Capacitor(s) /
Heating Relay /
Transformer /
Fuse / (E27D3 / E28D4 Only)
Fuse Holder (E27D3 / E28D4 Only)
Remove Rear Access Panel:-
1. At the rear of the oven, remove the vent shroud.
2. Remove the rear access panel.
Capacitor(s):-
1. Remove wires from rear of capacitor.
2. Remove securing nut.
3. Replace capacitor and refit in reverse order.
Heating Relay:-
1. Disconnect all electrical connections to the heating relay.
2. Undo the 2 screws securing the heating relay to the rear of the
oven.
3. Remove the heating relay from the oven.
4. Refit the replacement heating relay in reverse order.
Transformer:-
1. Disconnect all electrical connections to the transformer.
2. Undo the 2 screws securing the transformer to rear of oven.
3. Remove the transformer.
4. Refit the replacement transformer in reverse order.
Securing Screws
Remove
Wires
Transformer
Heating
Relay
Securing
Screws
Remove
Wires
Remove Nuts
Remove Wires
Capacitors
E27D3 & E28D4 only
E23D & E27D2 Only
Remove
Nut
Capacitor
Remove
Wires
Capacitor Specifications
Motor Capacitor, 5uF - 208 - 240V.
Motor Capacitor, 6uF - 200V.
E23D Oven Shown.
Water
Solenoid
Rear Control
Board
Motor
Capacitor
Transformer
Heating
Relay
Overtemp
Just Loosen Screws
Remove Screws Vent
Shroud

Service Procedures
17
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
Fuse (E27D3 - E28D4 Only):-
1. Using a flat bladed screwdriver, unscrew the fuse cap and
remove the cap and fuse.
2. Refit a replacement fuse into the cap and refit cap and fuse into
fuse holder.
Fuse Holder (E27D3 - E28D4 Only):-
1. Remove wires from the fuse holder.
2. Press in the locking tabs at the rear of the fuse holder and push
out the fuse holder from the oven rear.
3. Replace fuse holder and refit in reverse order.
Locking Tabs
Disconnect
Wires
Fuse Holder
Fuse Cap
5.1.4 Overtemp Thermostat /
Temperature Probe
Remove Rear Access Panel:-
1. At the rear of the oven, remove the vent shroud and rear
access panel.
Overtemp Thermostat:-
1. Unhook back of phial from the phial holder inside the oven.
2. Pull phial towards back of oven to remove from front holder.
3. Remove phial through rear of oven.
4. Remove wires from the overtemp.
Unhook Phial
Just Loosen Screws
Remove Screws Vent
Shroud
Disconnect
Wires

Service Procedures
18
Turbofan E20D Series Convection Ovens © Copyright Moffat Ltd. 10 February 2016.
Amendment 1
5. Clean off any existing silicone
from around the temperature
probe opening in the oven inner
wall.
6. Fit a new gasket to the rear of
the new temperature probe and
from inside the oven, feed the
probe cable through oven
cavity.
7. Secure temperature probe to
the inside of the oven using the
supplied screws.
8. Connect temperature probe cable to oven control board.
9. Refit the control panel.
10. Refit the rear access panel.
11. Carry out a functional check of temperature probe using the
oven controller.
Temperature Probe Type PT1000
Temperature oC (oF) Resistance ± 5%
0 (30) 1000 Ω
50 (122) 1194 Ω
100 (212) 1385 Ω
150 (302) 1573 Ω
180 (356) 1685 Ω
Temp
Probe
Gasket
5. Remove 2 screws securing overtemp and remove overtemp
from rear of oven.
6. Refit in reverse order.
Temperature Probe
1. Disconnect temperature probe cable from the rear control
board.
2. From inside the oven, remove the oven racks and fan baffle.
3. Undo the temperature probe securing screw(s).
4. Withdraw probe and cable through the oven cavity and into the
oven.
Temp Probe
Connection
Remove
2 Screws
Temp
Probe
Remove
Screws
Reset
Button
Securing Screw
Baffle Securing
Screw
Fan Baffle
E23D Oven Shown.