Appendix 7 – Merrychef 402s User Manual

Page 46

402s Ovens Pt. No. 32Z3522 Issue 6

CODEKEY Reference ( See Table 1 for abbreviations description)
Version 3

Part No. 31Z7066 3.0LD 402s Large Display UK/EU (FO / EMD)

Part No. 31Z7068 3.0LD 402s Large Display French (FO / EMD)

Part No. 31Z7071 4.3LD 402s Large Display UK/EU (FO / SSR / EMD)

Part No. 31Z7072 4.3LD 402s Large Display French (FO / SSR / EMD)

Part No. 31Z7073 4.4LD 402s Large Display US/EU

(FO / SSR / EMD / NSS / NPM / NEPT / NEP)

For QSR restaurants

Version 2.5

Part No.

31Z7067

4.4SD 402s Small Display UK/EU (FO / EMD)

1.0 The 402s Control System

The control system of the 402s is based upon the following fundamentals:

Logic PCB:

Controls and monitors all aspects of the oven and stores all Firmware and Menu Data.

Firmware:

This is where all of the oven

operating instructions are
stored. It can be changed

by a CODEKEY

Menus:

This is where all of the

Information for menus is

stored. It can be changed

manually or by a MenuKey

LOGIC PCB

Relay PCB:

Driven by the Logic PCB the Relay PCB

controls all of the power around the oven.

Microswitches

Heater Elements

Magnetrons

Sensors

Convection Fan

Fibre Optic Expansion

Door Sensor

Solid State Relay

APPENDIX 7:

Firmware revision guide.

As a result of on-going changes / upgrades to the 402s Oven, this Appendix has been produced
stating the following:

1.0 An overview of the control system for a 402s.
2.0 How to check your Firmware version
3.0 How to check your hardware fitted
4.0 CODEKEY firmware upgrade
5.0 MenuKey2 download