Recovery System163Service Manual – Advance 7765 / Nilfisk CR1500MaintenanceWarning! Before performing any machine maintenance, make sure the key switch is off, the keyis removed from the machine and the parking brake is engaged.Daily Maintenance• Check the gasket on the recovery tank cover for damage/wear.• Check the vacuum hose for leaks or cracks.Recovery TankTo clean the recovery tank:1. Lift the recovery tank lid (cover).2. Tilt the recovery tank out away from the machine.3. Flush all deposits from the tank.4. Flush the float switch (standard solution systems) and the solution inlet filter (ESP/Recycle option only).Note: The solution inlet filter is threaded into the bottom of the tank and is designed to be removedand installed with an oil filter wrench.TroubleshootingProblem Cause CorrectionPoor water pickup. Vacuum leak(s) due to:• Leaky vacuum hose.• Bad recovery tank lidgasket.• Drain plug not installedcorrectly.• Damaged tank.• Check the squeegee vacuum hose and tighten/replace as necessary.• Check the recovery tank lid gasket and replace asnecessary.• Make sure drain plug is installed correctly.• Check the recovery tank for damage.Restrictions due to built-updebris in the squeegee toolor vacuum hose.• Check the squeegee tool and vacuum hose forany accumulated dirt or debris and clean asnecessary.• Check the vacuum system airflow pathwaywherever the airflow is forced to make a sharp turnfor any accumulated dirt or debris and clean asnecessary.Squeegee blades worn orout of adjustment.• Check and replace the squeegee blades ifnecessary.• Readjust the squeegee as necessary.(Refer to the Rear Squeegee section in theInstructions For Use).
