10
FUMEX
C 600HT
Manual
8 Maintenance
Repairs may only be carried out by the
manufacturer. We are not liable for repairs
carried out by third parties.
8.1 Maintenance guidelines
Maintenance must be in accordance with
the guidelines under Chapter
The fan must be inspected regularly
according to section
Maintenance and inspection of the motor
must be in accordance with the motor do-
cumentation and labelling. The motor’s ball
bearing must be replaced before its service
life expires.
Dust and dirt
Prevent dust/dirt from accumulating on the inside and
outside of the fan. Dirt on the grilles and filters can
lead to a reduction in capacity. Dirt on the fan housing
and motor can lead to impaired cooling, and dirt on hot
surfaces incurs a risk of ignition. Particular attention
should be paid to the motor’s cooling panel and cover,
as reduced cooling can lead to the motor overheating.
Corrosion
Corrosion can lead to mechanical damage to the fan.
Do not use the fan if it has started to rust.
Overload
If the fan draws too much current, this may be due to:
• An incorrectly dimensioned fan
• Mechanical damage (e.g. to impeller or ball bearings)
• Incorrect electrical connection or peripherals.
The current must be measured and, if found to be too
high, the potential cause of the fault must be establis-
hed and rectified. The current must not exceed the
nominal value.
Vibrations
Strong vibrations can cause mechanical damage to the
fan structure and its fixings. Increased vibrations may
be caused by damaged ball bearings or impaired balan-
ce in the impeller. The vibrations need to be measured
and, if found to have increased, the cause must be
established and rectified.
The maximum value for the vibrations at the motor ball
bearing (perpendicular to the motor shaft) must not
exceed the values in the table below:
Fixed mounted*
Flexibly mounted*
Top
r.m.s
Top
r.m.s
6,4 mm/s
4,5 mm/s
8,8 mm/s
6.3 mm/s
*according to ISO 14694
8.2 Inspection and maintenance
The interval between inspection and maintenance
should be determined by the user based on the load
on the fan and its ambient factors.
In the event of any deviations from the norm, the fan
must be taken out of service and inspected, maintai-
ned, cleaned and, where applicable, repaired. Examp-
les of reasons why the fan may not work properly are
provided in Appendix C.
Operating personnel must be aware of how the fan
works under normal circumstances. If the fan deviates
from its normal behaviour, it must be taken out of ser-
vice and inspected.
Detailed information on components and their tighte-
ning torques is available upon request.
Daily inspection
It is recommended a general inspection be
performed daily, and certainly at least once
a week.
Check to ensure the following:
• The fan is undamaged, stable and flawless in operation.
• There is no leakage or smoke from the motor.
• The fan does not emit any abnormal sounds and
does not get hotter than normal.
• The fan is clean and free of rust.
• Cables are intact.
• There is no unwanted leakage from the fan.
• Grilles, filters and guards are seated as they
should be and are clean.
Monthly inspection
Check to ensure the following:
• The current value of the fan is no higher than at
the time of commissioning.
• The vibrations are no greater than at the time of
commissioning.
• Fan, grilles, filters and guards are clean.
Summary of Contents for C 600HT
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