Nilfisk-Advance Convertamatic 24 Service Manual

Also see for BA 625: Instructions for use Instructions for use

Contents

Nilfisk-Advance Convertamatic 24 Service Manual Manual pdf 60 page image

58 - FORM NO. 56043098 - Convertamatic ™ 24, 26, 28, 32 / BA 625, 725, 825ELECTRICAL SYSTEMFUNCTIONAL OVERVIEW OF MAIN CONTROL BOARDThe primary function of the main control board A1 is to position the scrubbing brush(s) with respect to the floor surface using a lift actuator motor to maintain thecorrect brush pressure and current draw of the brush motor(s). When the scrub ON switch is depressed this will lower the scrub deck to the operating position and byactivating the drive paddle start the brush motors. The controller is continuously monitoring the current to the brush motors and when it senses a current draw out ofthe desired range it automatically raises or lowers the brush deck by turning on the brush actuator motor. This process is repeated until the brush motor is shut off.The controller also manages the other supportive systems such as the solution on/off, and vacuum motor. Note: See the Know Your Machine system in this manualfor a complete explanation of the machine’s operation.The secondary function of the main control is to detect any system failures and display an error code on the display LED panel or store it in the main control board’srecall memory mode. The error code(s) are used to help the serviceperson determine the fault and to quickly guide in repairing a specific system malfunction. Note:See the Troubleshooting Guide for further information. An additional special feature of the main control board is to change program settings for a set of specificmachine functions. See the Main Control Board Special Program Options section in this manual for further information.TROUBLESHOOTING GUIDEAny error codes detected by main control board will be displayed on the LED display panel as they occur. If more than one-error exists the display will sequencethrough the error codes at one-second intervals. The error display will show on the display LED panel as a mechanical wrench symbol followed by a two-digitcode. EX: 03 would be a drive system fault. When troubleshooting any “Fault Description” noted with a double asterisk (**) follow the instructions for enteringthe SERVICE TEST MODE in the control boards special programs. See the Main Control Board Special Program Options section in this manual.