robatherm RM Series - Page 28

Commissioning and Maintenance
24 © robatherm
Pos: 42.18 /Inbetri ebnahme und Wartung/Ven tilator/Ventilator _Wartung @ 0\mod_12579 58205121_2008.doc @ 2136 @
Fan – Periodic Maintenance
 Check fan for hygiene, contamination, damage, corrosion and fastening
 Check impeller for imbalance and vibrations; balance if necessary
 Check bearings for noise, vibration and heat
 Check flexible connection for leaks
 Check functioning of vibration dampers
 Check function of protective devices
 Check function of inlet vane control
 Check functioning of dehydration equipment
 Check gap width of open impellers (see page 21); correct if necessary
 Pollution and dirt on flex connector shall be removed with a vacuum cleaner, and, in a
second step, wiped with a with damp cloth
Fan – Maintenance when necessary
 Replace bearings (no later than the end of the theoretical service life)
 Grease bearing. Follow manufacturer’s instructions!
 Clean fan, rectify any damage and corrosion, retighten fastenings
Electric Motor – Periodic Maintenance
 Check electric motor for contamination, damage, corrosion, fastening, smooth running,
heating and direction of rotation
 Check bearings for noise, vibration and heat
 Clean electric motor and rectify any damage and corrosion
 Measure tension, current input and phase symmetry
 Check firm seating of terminals in terminal block; retighten if necessary
 Check protective conductor; retighten or replace if necessary
 Check cable rails. Clean it if necessary with vacuum cleaner and, if necessary with damp
cloth
Electric Motor – Maintenance when necessary
 Replace bearings (no later than the end of the theoretical service life)
 Grease bearing. Follow manufacturer’s instructions!
Belt Drive – Periodic Maintenance
 Check belt drive for contamination, damage, wear, tension, alignment of motor and fan
pulley (tolerance < 0.4°; d.h. < 7 mm/m), check function and fastening (see torque
settings)
 Check protective device for damage, fastening and functioning
Belt Drive – Maintenance when necessary
 Replace belt set
 Adjust alignment of motor and fan pulley
 Adjust belt tension (see page 26)
 Clean belt drive