Technical data

Air Top 2000 ST Function Tests
609
6.4.4 Combustion air fan component (drive)
See Fig. 903, Item 5
2
1
1
2
1
Combustion air fan (drive)
Externally damaged?
no
yes
Procedure Testing and
measuring
equipment
Visual
Visual inspection
Continuity
measurement
Digital
multimeter
Motor start-up Voltage source
Subjective test
IMPORTANT
Ensure correct polarity (+)/(–)
(–) = brown
(+) = green
no
yes
Start at 10 V?
Bearing noises?
no
yes
yes
no
Installation of component
in unit => short circuit to metal
parts (heat exchanger etc.)?