EN
EN
AMD – Medium-pressure axial fans
Installation and Operating Instructions
19
Interval
Test and maintenance work
Fan
standard
To be carried out by:
1/2 annual
Test run up to maximum nominal speed
and then deactivate again
x
Instructed personnel
1/2 annual
Check fan and drive motor for running noises.
x
Instructed personnel
Annual
Test run for at least 20 minutes and then deactivate
again.
For fans with bearing condition diagnostics, operate fan
until steady-state is reached (around 60-75 minutes) before
reading out values
(see Installation and Operating Instructions for LZD).
x
Instructed personnel
Annual
General visual inspection and check of fan condition for
external soiling, correct fastening, corrosion and damage.
Clean components for functional integrity if needed.
x
Instructed personnel
Annual
Check fan suspension and on-site substructure/foundation
for damage and corrosion as well as correct fastening.
x
Instructed personnel
Annual
Check flexible connectors and connections for tension-
free installation, tightness, correct fastening, soiling
and damage.
Clean components for functional integrity if needed.
x
Instructed personnel
Annual
Check vibration dampers for functionality, correct fastening,
corrosion and damage.
x
Instructed personnel
Annual
Check air gap between wingtip and fan casing.
x
Instructed personnel
Annual
Check drive motor for soiling, corrosion, damage and
correct fastening. Clean components for functional integrity
if needed.
x
Instructed personnel
Annual
Check impeller for soiling, corrosion, damage and correct
fastening.
Clean components for functional integrity if needed.
x
Instructed personnel
Annual
Check inspection opening for tight fit, corrosion and
damage.
x
Instructed personnel
Annual
Check protection devices (protection grilles, etc.) for soiling,
corrosion, damage and correct fastening.
Clean components for functional integrity if needed.
x
Instructed personnel
Annual
Check accessory components (mounting brackets,
duct shutters, extension ducts, etc.) for soiling,
corrosion, damage and correct fastening.
Clean components for functional integrity if needed.
x
Instructed personnel
Annual
Check terminal box (motor and casing terminal box)
and connection cable for correct fit, damage and corrosion.
x
Instructed personnel
Annual
Check power consumption of drive motor
x
Instructed personnel
Annual
Check motor protection device
x
Instructed personnel
Annual
Check fan vibration state
x
Specialist personnel
Annual
Check impeller for imbalance
x
Specialist personnel
According
to status
Replace defective, damaged and worn parts/components
on fan suspension, fan, drive motor, cooling air fan, protection de-
vices, attachments and accessories as required.
x
Specialist personnel
See motor
type plate
Regrease motor bearings with regreasing device
x
Specialist personnel
TEST AND MAINTENANCE PLAN
The following must be checked:
