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© Munters AB, 2020
8. MAINTENANCE
Task
Frequency
Visual inspection to check for defects
Daily
Check belt tension
3 days after first starting and then monthly
Clear dust
Every second month
Warning: No high pressure water to be sprayed on motor
and bearings.
8.1 Introduction
Maintenance must only be carried out by qualified personnel only using suitable tools and working methods.
Before any maintenance steps are taken, make sure the power switch is in the off position and locked by a padlock. Make
sure the propeller is at a complete standstill.
Fans do not contain parts needing periodic lubrication, as moving parts are either manufactured from self-lubricating
materials, or are sealed with lifetime lubrication.
8.2 Cleaning
Inspect the fan at regular intervals and keep it clean. It is advised to perform periodic cleaning of safety mesh
guards. Dust on the safety mesh guards causes extra power consumption; severe dust on the motor can cause overheating
and subsequent motor failure.
WARNING
Keep motor body clean. Dust deposit on motor body will lead to overheating and failure of bearings
and motor itself.
Do not use water for motor cleaning. Use compressed air only. Water spraying will cause rust inside the bearings
and lead to their failure.
WARNING
All the components and spare parts MUST be stored in dry and clean environment.
8.3 Belt tensioning check up
Check V-belt tension at regular intervals, the correct tension is obtained when maximum deflection (half-way from motor
and central pulley) is about 15 mm, when pushed in by thumb.
WARNING
Tighten fan belt after the fan has been running for 3 days. Without adjusting the tension,
transmission components can wear out early.
