Inspecting the fan
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Component
Monthly inspections during operation
Oil 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 regard
to cracks or other damage. Replace damaged parts
within the context of maintenance tasks with the fan at a
standstill.
Re-lubrication for bearing (optional)
Check filling level of the grease cartridge. Refer to
chapter 8.5. Replace used or faulty re-lubrication devices.
Re-lubrication for shaft seal (optional)
Check filling level of the grease cartridge. Refer to
chapter 8.5. Replace used or faulty re-lubrication devices.
Fan in general
Check all external screw connections for secure
fastening. Where necessary, tighten loose screw
connections with a torque wrench.
Refer to Table 7-1 Tightening torques.
Component
Monthly inspections with the impeller at a standstill
Shaft seal
Inspect condition of the shaft seal with the impeller at a
complete standstill. Replace worn sealing rings. Refer to
chapter 13.3.
Shaft earthing (optional)
Inspect condition of the shaft earthing with the impeller at
a complete standstill. Refer to chapter 13.4.
Impeller gap
Inspect the impeller gap for build-up of material or other
potential hindrances with the impeller at a complete
standstill. Refer to chapter 8.2.
V-belt drive (for structural design R only)
Check belt tension and condition of the belt with the
impeller at a complete standstill.
12.2 Monthly inspections
Table 12-2 Monthly inspections
