21
Functional check
Yes
No
Impeller easily rotatable (by hand)
□
□
Direction of rotation corresponds to direction
of rotation arrow
□
□
Direction of rotation Impeller on motor side
□ clockwise □ counterclockwise
Smooth running without unusual noises /
vibrations
□
□
Measurement data at commissioning
Voltage [V]:
Impeller speed [rpm]
Current L1 [A]*
Volume flow [m³/h]:
Current L2 [A]:
Differential pressure [Pa]*:
Current L3 [A]:
Test run (minutes):
*For single-phase fans, enter in line "Current L1 [A]"
*Δ-pressure between suction and discharge side of the fan
If a volume flow measurement is not possible, the value can be calculated using the following formula:
Duct cross-section [m²] X Flow velocity [m/s] = Volume flow [m³/h]:
Grid measurement according to VDI 2044
Operating instructions handed over to opera-
tor
□
□
Maintenance book handed over to operator
□
□
Operator/personnel instructed
□
□
Start-up of the fan may only take place if all tests are positive!
Yes
No
Start-up of the fan successful?
□
□
Date, stamp, signature of installer
Date, stamp, signature of operator
