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Microcook HD Ovens 32Z3385 Issue 5
This manual is designed to assist engineers who have successfully completed a Merrychef
Service training course. It has been prepared to offer technical guidance for the Merrychef
Microcook HD and Microcook TA Commercial Microwave Ovens.
Please remember that it is wiser
not
to attempt a service task if you are unsure of being able to
complete it competently, quickly, and above all
safely
.
To avoid injury to yourself, and to protect the appliance from possible damage, please follow
this Safety Code when servicing these ovens.
Before attempting to repair the oven, check it for microwave leakage.
Check that the oven is not emitting microwaves,
even when supposedly not in operation.
Check that the oven is not operating continuously,
whether the display indicates cooking or not.
Always discharge the HT capacitors before working on the oven
using a suitably insulated 10 M
Ω
Resistor
The following must be carried out prior to removing the rear cover from the oven :
•
Switch off the mains supply and remove the plug from the wall socket.
or
•
If the oven is hard wired, ensure that the power is turned off at the mains
isolator switch.
Upon completion of a service on an Microcook oven, or before reconnecting the appliance to
the mains supply for testing, check all of the following points:
•
All internal electrical connections are correct.
•
All wiring insulation is correct and is not touching a sharp edge.
•
All Earth connections are electrically and mechanically secure.
•
All three door safety interlocks are secure and mechanically sound.
•
The door operation is smooth.
•
The door activates all three of the door interlock switches
in the correct order
.
•
All fuse-holder safety covers are correctly fitted.
Before finishing the service call, recheck the following points:
•
The oven is electrically safe
•
All of the electronics are functioning correctly, and all of the touch pads are
working.
•
The power output of the oven is correct (see pages (8 & 9).
•
Microwave emission is below permissible limit - 5 mW/cm²
(see BS EN 60335-2-90).
•
Oven has correct 50mm air gap all round. Air flow should not be restricted.
SAFETY CODE
