44
TXP Inst. & Maint. Manual: IM-825
= Measuring point
= Measuring direction
2. Repeat the measurement at the
second measuring point.
3. Verify that the readings are within
the permissible limits.
The vibration measurement is
complete.
5.7.2 Check the direction of
rotation
Before commissioning, the direction of
rotation of the fan must be checked.
There are arrows on the fan housing
that represent the correct direction of ro-
tation.
Fig. 29: Fan housing with direction of rotation
arrow
To check the direction of rotation,
proceed as follows:
1. Turn the fan on briefly and then off
again.
The fan starts briefly, the fan
impeller rotates a bit.
2. Check the running direction of the
fan using the arrow on the fan
housing.
3. If the direction of rotation is re-
versed, swap the polarity (L1 for
L3).
The rotational direction check
is complete.
5.7.3 Commissioning of the Fans
To put the fan into operation, pro-
ceed as follows:
1. Make sure there are no foreign ob-
jects in the fan housing or piping
system.
2. Let the fan run at a slow speed.
•
In the IK variant with Kostal: Turn
the potentiometer up a bit. Note the
hints in the guidelines for the Kostal
frequency converter.
•
In the IV / Omron variant - set
speed according to instructions Fre-
quency inverter manufacturers
Fig. 30: Kostal Potentiometer
1 Potentiometer