4
Service & Parts Manual original Instructions
Part Number 32Z3810GB
Issue 1
SAFE
TY &
REGUL
ATIONS
Important:
1.1
This manual provides technical guidance for engineers
who have successfully undertaken a recognised product
familiarisation and training course run by Merrychef to carry
out service/repair tasks to the appliance/s shown on the
front cover of this manual which must not be used for any
other make or model of appliance.
Please remember that it is wiser not to attempt a service task
if you are unsure of being able to complete it competently,
quickly, and above all safely.
To avoid injury to yourself or others and to protect the
appliance from possible damage, ensure you have read and
understand all the relevant instructions and ALWAYS follow
the Safety Codes when servicing an oven.
Before attempting to repair the oven, check the oven for
1.1.1
microwave emissions using a calibrated microwave emission
detector.
Check that the oven is not emitting microwaves, even
1.1.2
when supposedly not in operation.
Check that the oven is not operating continuously,
1.1.3
whether the display indicates cooking or not.
Never manipulate the mains power lead whilst it is live.
1.1.4
Before removing the oven casing ALWAYS isolate the
1.1.5
oven from the mains electricity power supply; switch off and
disconnect the oven plug from the wall socket, turn off isolator
switch to disconnect fixed wired ovens. NOTE: The oven switch
does not provide adequate protection against electric shock as
it does not isolate all of the internal wiring from the mains.
The equipment must be locked-off to prevent the oven
1.1.6
from being inadvertently powered up.
Do not leave the oven unattended without the oven
1.1.7
panels fitted and keep within sight of other personnel
when testing the oven, ensuring persons other than trained
engineers are denied access.
The minimum number of panels should be removed and
1.1.8
the HT capacitors must be discharged before working on the
oven using a suitably insulated 10 MΩ Resistor.
Temporary insulation should be used to prevent
1.1.9
accidental contact with dangerous conductors.
Do not touch any internal wiring within the Oven,
1.1.10
whether you believe it is live or not and avoid touching the
Metalwork (Casing, Panels, etc) of the Oven with your Body.
Only use electrically rated screwdrivers for adjusting
1.1.11
‘Pots’ etc., ensuring the tool touches nothing else.
Ensure the Test Equipment is set correctly before use.
1.1.12
Test equipment such as meter test leads or clamps must
1.1.13
be fitted and removed whilst the unit is dead, for each and
every test.
Do not undertake functional Magnetron testing with the
1.1.14
oven panels removed.
Avoid touching the Test Equipment, unless necessary for
1.1.15
the operation.
Upon completion of a service follow the steps for
1.1.16
‘Commissioning the oven’ under the Commissioning section of
this manual.
SAFETY REQUIREMENTS
1
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:
ALWAYS DISCHARGE THE HT CAPACITORS
BEFORE WORkING ON THE OVEN USING A
SUITABLY INSULATED 10MΩ RESISTOR.
IF SMOkE IS OBSERVED:
SWITCH OFF THE OVEN - DISCONNECT/ISOLATE
FROM THE ELECTRICAL SUPPLY -
kEEP THE OVEN DOOR CLOSED TO STIFLE ANY
FLAMES.
