Our dealership has recently responded to customers reporting that a system function is not working. We’re finding that the common denominator is that the machine had been jumped or charged from a battery charger. Sensitive to voltage spikes, the VMM (Vansco Multiplexed Module) can lose memory causing problems with certain systems. We here at Owen Equipment are taking a pro-active role in advising our customers that have these types of systems to follow the procedures outlined in this Tech Tip.
As always, please feel free to contact any one of our factory trained service technicians on any service related question. We’ll do our very best to resolve the problem or work collectively with the factory to address the issue. Communication is the number one priority as immediate response gets your machines back to full function more quickly.
ALWAYS REFER TO THE OPERATOR MANUAL FOR SAFETY INSTRUCTIONS BEFORE STARTING WORK.
Improperly boosting or applying more than 14V when jump-starting Memory-Sweep units may cause the electronic modules to become inoperative. Do not jump-start the sweeper using a vehicle or forklift with more than 12V system capability. Do not start the sweeper using a battery charger set to “Boost Start”. If the Memory-Sweep system becomes inoperative after attempting a “boost-start”, call Elgin Sweeper Service for assistance.
UNITS TO SERVICE:
NP/NS/NR0101D and higher, J3000 and higher, MV3000 and higher, MX, and any sweeper equipped with VMM system.
Over-voltage or alternating current spikes created by a battery charger/booster may cause the VMM’s in the Memory Sweep system to be placed in a neutral state and unable to function. A discharged sweeper battery must not be charged with an A/C powered battery charger without first isolating the battery from the sweeper.
Charging/Replacing a Dead Sweeper Battery
- Disconnect the negative battery terminal from the sweeper battery.
- Disconnect the positive battery terminal from the battery.
- Either replace the battery with a fully charged replacement battery or charge the isolated battery to full charge.
- Install the fully charged battery in the sweeper.
- Re-connect the positive cable first and then the negative cable.
Jump-Starting the Sweeper
The prefered method for servicing a dead sweeper battery is to remove or disconnect the battery before re-charging. If the sweeper must be jumpstarted, use the following procedure:
NOTE: Jump-start the sweeper using only a vehicle with like voltage. Do not jump-start the sweeper using a vehicle or forklift with more than 12V system capability. Do not start the sweeper using a battery charger set to “Boost Start”.
- Identify the positive (+) and negative (-) terminals on both batteries.
- Connect the first jumper cable to the positive (+) terminal of the dead battery, then connect the other end of that cable to the positive (+) terminal of the booster (good) battery.
- Connect one end of the other jumper cable to the negative (-) terminal on the booster battery and the final cable clamp to a solid, metallic point on the sweeper. Pick a ground on the engine that is positioned away from the battery in order to minimize the possibility of the 2 clamps touching during the procedure. DO NOT connect this clamp to the negative (-) terminal of the bad battery.