Inspecting the fanOperating_Manual_Fan_KXE_04_en.docx 93 / 128Component Monthly inspections during operationOil bearing Check the oil level (optimum oil level is between the“min.” and “max.” markings).Anti-vibration mounts (optional) Check condition of the anti-vibration mounts with regardto cracks or other damage. Replace damaged partswithin the context of maintenance tasks with the fan at astandstill.Re-lubrication for bearing (optional) Check filling level of the grease cartridge. Refer tochapter 8.5. Replace used or faulty re-lubrication devices.Re-lubrication for shaft seal (optional) Check filling level of the grease cartridge. Refer tochapter 8.5. Replace used or faulty re-lubrication devices.Fan in general Check all external screw connections for securefastening. Where necessary, tighten loose screwconnections with a torque wrench.Refer to Table 7-1 Tightening torques.Component Monthly inspections with the impeller at a standstillShaft seal Inspect condition of the shaft seal with the impeller at acomplete standstill. Replace worn sealing rings. Refer tochapter 13.3.Shaft earthing (optional) Inspect condition of the shaft earthing with the impeller ata complete standstill. Refer to chapter 13.4.Impeller gap Inspect the impeller gap for build-up of material or otherpotential hindrances with the impeller at a completestandstill. Refer to chapter 8.2.V-belt drive (for structural design R only) Check belt tension and condition of the belt with theimpeller at a complete standstill.12.2 Monthly inspectionsTable 12-2 Monthly inspections
