50
TXP Inst. & Maint. Manual: IM-825
•
Check the fan for clean and reliable
condition
•
Fans for unusual motion se-
quences, running noises, checking
smooth running (ball bearings)
•
Perform vibration testing
•
Check fan for heating
•
Check the fan for odor development
•
Cleaning fan & impeller if needed
•
Remove dust deposits on electric
motor and frequency inverter
•
Check electrical cables, connec-
tions and fittings for damage, tight-
ness and fixed seat
•
Check connections in the terminal
box for torques (see Tab. 7: Tight-
ening torques for threads in the mo-
tor terminal box (IV / IV & Omron
/IV & Kostal)
•
Check impeller for signs of wear
7.5 Cleaning IK devices
Important information for
cleaning IK devices
In the case of IK devices, it
should be noted that in special
environmental conditions, the
cooling fins may be severely pol-
luted. If the cooling capacity on
the cooling fins is not sufficient,
the frequency inverter switches
off. Regular cleaning is required
for devices in these environ-
ments.
7.6 Ball Bearings
The fans are equipped with sealed ball
bearings, which do not require relubrica-
tion.
Check the ball bearings during mainte-
nance and before each recommission-
ing. Operation is only permitted with
flawless ball bearings! To do this, turn
the impeller by hand and check it for
smoothness.
Important information about
the ball bearings
In case of frequent start-up and
departure, an early replacement
of the bearings is required. It is
up to the maintenance and repair
personnel to determine the time
for the replacement of the bear-
ings on their own responsibility.
Device
Minimum Ser-
vice Life of Ball
Bearings
Model TXP
25,000 hours
Table 10: Maintenance intervals ball bearings
Recommendation for ball bearing
change:
•
Before reaching the minimum life-
time
•
No later than 30 months after deliv-
ery
•
Check after 12 months of storage,
change if necessary.
•
During commissioning with 50% of
the frequency let the fan run for 2
minutes, so that the ball bearing
grease can mix after a long stand-
still or storage time under low load.
7.7 Fine filter
If a filter is used, the degree of contami-
nation of the filter mats must be checked
at regular intervals depending on the
operating/environmental conditions and,
