Specifications

30
Service & Parts Manual original Instructions
Part Number 32Z3839 GB
Issue 5
Service & Parts Manual original Instructions
Part Number 32Z3839 GB
Issue 5
31
TESTING
COMPONENTS
SERVICING
A
B
8
9
10
7
6
2
31
4
5
DANGER!
THIS APPLIANCE MUST BE EARTHED.
FAILURE TO DO SO MAY RESULT IN
ELECTRIC SHOCK AND DEATH.
DANGER:
BEFORE REMOVING THE OVEN CASING, ISOLATE THE
OVEN FROM THE MAINS ELECTRICITY POWER SUPPLY;
SWITCH OFF, DISCONNECT OVEN PLUG FROM WALL
SOCKET, TURN OFF ISOLATOR SWITCH TO DISCONNECT
FIXED WIRED OVENS AND LOCKOFF.
WARNING:
ALLOW OVEN TO COOL. OBSERVE AND FOLLOW ALL
SAFETY PRECAUTIONS INCLUDING THOSE DESCRIBED
UNDER THE SAFETY REGULATIONS SECTION OF THIS
MANUAL BEFORE ATTEMPTING A SERVICE OR REPAIR.
CAUTION MICROWAVE EMISSIONS:
DO NOT BECOME EXPOSED TO EMISSIONS FROM THE
MICROWAVE GENERATOR OR PARTS CONDUCTING
MICROWAVE ENERGY.
17 OVEN TESTING
17.1 Equipment required
● Portable Appliance Tester (P.A.T.).
● Digital Multi-meter (D.M.M.).
● Megger / similar 500V d.c. resistance meter.
● Microwave detection / leakage meter.
● Temperature reader.
● Continuity meter.
● Door Spacer Kit (Part No. SA1109).
● Microwave safe 600ml glass beaker
● Microwave safe 2 litre container.
17.2 Earth/Insulation Test:
17.2.1 Disconnect/isolate the oven from the power
supply.
17.2.2 Connect the mains lead from the oven to a
P.A.T. (Portable Application Tester).
17.2.3 Connect the Earth from the P.A.T. to the oven
hinge (A).
17.2.4 Place the P.A.T. in an open area, such as the
oor, away from any persons.
17.2.5 Perform a Class 1 test, a PASS indicates the
oven Earthing circuit is functioning ok.
17.2.6 If a FAIL is indicated, remove the oven casing
and check ALL earth connections before retesting.
17.2.7 NEVER operate an oven that has failed this test
as it could be potentially dangerous.
WARNING:
ALWAYS DISCHARGE THE HT CAPACITORS BEFORE
WORKING ON THE OVEN USING A SUITABLY INSULATED
10M RESISTOR.
17.3 Screen calibration:
17.3.1 Apply continuous light pressure to the
screen while switching the oven on. Keep the
pressure on until the top bar reaches the far
righthand side of the display, you will then see the
crosshair appear on the screen.
17.3.2 Using a non-abrasive pointer, such as a
ball point pen, accurately press the center of each
crosshair displayed on the screen. Once calibrated
the screen will display the oven information. NOTE:
Take care not to touch any other area of the screen
during the calibration process.
DO NOT REMOVE USB DURING
DOWNLOAD SEQUENCE AS THIS COULD
CORRUPT THE USB DATA.
IMPORTANT:
Downloading from a USB will clear all existing
programs.
Only use an empty USB memory stick formatted
as follows:
A) FAT16 to update from UI QTS-XX-
XXXXX-V1.2.16
B) FAT16 or FAT32 to update from UI QTS-XX-
XXXXX-V1.2.17 or later.
Copy the following rmware les to the ROOT
directory of the USB memory stick:
● QTS-eX-XXX-VX.X.XX.BIN
● SRB-eX_X_X_XXX.BIN
● VX-APP-eX.CBR
● Autoupd.ATE
For update A) follow all instructions:
For update B) follow the rst 2 instructions:
16.1.24 With the oven switched o, slide the
Merrychef badge (oven front top right) upwards and
insert the USB Memory Stick into the slot (1).
16.1.25 Switch the oven ON (2).
16.1.26 Tap the top right of the screen (3) to bypass
the preheat stage.
16.1.27 Enter the password and select OK to display
the Settings menu, see (4).
16.1.28 Select the USB symbol (5).
16.1.29 Select the ‘FIRMWARE’ USB symbol (6).
16.1.30 Select the ‘QTS’ le (7) with the correct le
version number. Note; a tinted band over a le name
indicates the le is not valid for that oven.
16.1.31 Check the le information shown is correct
before selecting OK (8), if not, select ‘X’ and locate
the correct le.
16.1.32 The CBR le is checked and the download
progress from the USB is displayed (9) followed by
the update status and conrmation screens.
16.1.33 The QTS, SRB and Application Icon les
then download automatically showing the progress,
status and reboot conrmation screens for each le
update.
16.1.34 On completion the oven start up screen (10)
is displayed showing the updated rmware versions
followed by the oven pre-heat temperature screen.
Conrming the oven update:
After an oven update the oven copies les back to
the USB memory stick.
16.1.35 Load the les from the USB memory stick to
a computer and open the update (UPDATE.txt) le.
16.1.36 An oven update is conrmed below the
oven serial number with ‘updated’ following the
QTS/SRB rmware and App Icons.