IMO BKF
Maintenance/troubleshooting/cleaning
BKF 16.08.2021 15
The fan is by built-in for-life lubricated ball bearings as far as possible low-maintenance product. After their life time
(app. 30.000 – 40.000 h), a replacement of the bearings is necessary. Observe attached instructions of motor manu-
facturer.
Pay attention to a non-typical noise from bearings.
For damages (e.g. damage to winding) please contact our Service Department. You will find the address on the
back of these operating instructions.
Maintenance and check points of fans similarly to VDMA 24186-1 (type, scope and maintenance intervals to be speci-
fied in dependence of use and operating conditions).
VDMA
24186-1
Description
Maintenance interval
Monthly
Every
3 months
Once
a year
Fan and electric motor of the fan
1.1.11
Check the drainage for function
×
6.1.1
Check to dirt, damage, corrosion and fastening
×
6.1.2
Functional cleaning
×
10.1.6
Check the terminals for tightness
×
10.1.9
Test the fan for function und operational readiness
(test run app. 15 min.)
×
6.1.4
Check the bearings for noise
×
10.1.3
Check impeller for direction of rotation (all speed)
×
6.1.3
Check impeller if damaged or unbalanced (if neces-
sary provide vibration measurement)
×
10.1
Functional test of automatically bridging of all ther-
mal and overcurrent protective devices
×
10.1.7
Measure the current
×
10.1.12
Test function of protective device
×
Triggering device
Check it for function
×
Test of functions
Test all functions of system from control panel as
well as signal lights
×
Check the safety measures (protective elements,
signs, guards)
×
Accessories (air ducts, air louvers, flaps, sound at-
tenuators)
5.5.1
Check accessible ducts inclusive fire protective insu-
lation and fastening for outside damages and corro-
sion (visually)
×
5.5.4
Check accessible flexible connections for tightness
(visually)
×
5.2.1
5.2.3
Flaps and sound attenuators check for dirt, damage
and corrosion
Check mechanical functionality of the flaps
×
5.1.1
Check air louvres for dirt and damage (visually)
×
10.4 Spare parts
In case of order of spare parts please specify the serial number of the fan. You can find it on the nameplate or in the
test protocol.
Spare parts: electric motor (there is a restriction to use only from the test lab allowed motors), impeller. How to re-
place electric motor, impeller - please contact manufacturer for instructions.