Vulcan-Hart VCE10H 126178, VCE20H 126172, VCE6H 126177, VCE20F 126173 Battery Replacement

ELECTRIC COMBI OVENS - SERVICE PROCEDURES AND ADJUSTMENTS

Battery Replacement

WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.

NOTE: When removing and replacing the SRAM/Battery module, it is recommended that a 28 pin EPROM extraction tool and a 28 pin EPROM insertion tool be used.

If installing the two piece SRAM and battery backup configuration, the SRAM and battery module must be assembled before installing on the board.

Caution: Do not place the battery backup module with the pins down on a metallic or conductive surface. This may result in component malfunction.

On the two-piece configuration, it is critical that the notch on the SRAM and the battery module match up on the same end. Carefully line up the SRAM pins and insert them into the battery module. Ensure that all SRAM pins are inserted properly.

Install the SRAM and battery module assembly onto the CPU board with the notches pointing up. Carefully line up the battery module pins and insert them into the socket on the CPU board. Ensure that all pins are inserted properly.

TWO PIECE CONFIGURATION SHOWN

For the one piece SRAM and battery module combination, position the module with the corner dot/notch pointing up. Carefully line up the battery module pins and insert them into the socket on the CPU board. Ensure that all pins are inserted properly.

Turn the power to the machine back on. Wait while the control performs a power up diagnostic test, sounds the buzzer and turns the displays and lights on then off. If the display and lights turn off, then the battery backup is functioning properly. If the control or oven does not come back on, turn the power off, re-check the mounting of the assembly, then turn the power back on. If this does not solve the problem then refer to steps 2B and 2C above as outlined in “BATTERY TEST”.

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