Publicité
Les langues disponibles
Les langues disponibles
Installation and Operating Instructions
WARNING
nmr
ATTENTION
l
ATTENTION
p
CHAPTER 4
SERVICING AND
MAINTENANCE
WARNING
nmr
AMD / AMW.. – Medium Pressure Fans
3.4
Start-up
WARNING
The rotating impeller can crush fingers.
Ensure protection against contact before start-up!
The following inspection work must be carried out or checked before the start-up:
– Check designated use of fan.
– Check permissible transport media temperature.
– Compare power consumption to rating plate data.
– Check fan for professional electrical installation.
– Check the waterproofing of the connection cable and tight clamping of the strands.
– Check protective conductor connection.
– Check all parts for tightness, particularly screws, nuts, protection guards. Do not loosen screws in the process!
– Check fan for solid mounting! Terminal box/isolator switch and motorised impeller unit must be freely accessible.
– Ensure that the suction and outlet areas cannot be accessed by unauthorised persons..
– Check tightness of all connections (if necessary).
– Remove assembly residues from the fan or duct.
– Check free movement and direction of rotation of impeller by briefly switching on; wear protective glasses when
checking.
– Compare power consumption to rating plate data.
– Test motor protection device for functionality. Check fan for vibration and noise during test run. In case of excessive
vibration and/or noise, it can be assumed that the fan is operating outside of its operating range. In this case, contact
the manufacturer by all means!
– Do not operate fan outside of specified characteristic curve (see catalogue / internet) . The fan must run at its spe-
cified operating point.
– In order to ensure sufficient motor cooling, a minimum speed/voltage, which also depends on on-site resistances,
wind
pressure,
etc.,
It must be selected so that a safe, jolt-free start-up and operation are ensured.
3.5
Operation
ATTENTION
There is no provision for workstations in the fan area. If this changes, personal protection measures (ear pro-
tection) and corresponding safety instructions according to ISO 7010 are necessary depending on the fan si-
ze.
Regularly check the proper functioning of the fan:
– Free movement of the impeller
– Power consumption in the range of the type plate data
– Check any vibrations and noises
– Formation of dust or dirt deposits in the casing or on the motor and impeller
– In case of problems with one of the aforementioned points, maintenance must be carried out according to the in-
structions in chapter 4.
4.0
Servicing and maintenance
WARNING
The fan must be isolated from the mains power supply and secure against being switched on again before
all cleaning, maintenance and installation work or before opening the terminal compartment!
– n principle, the units are maintenance-free. Nevertheless, all necessary maintenance work must be carried out by
qualified electricians, cf. section 1.6!
– Excessive deposits of dirt, dust, grease, etc. on the impeller, motor, protection guard and, above all, between the
housing and the impeller, are not permitted, as these can lead to an unbalance in the impeller, overheating of the
motor or the blocking of the impeller. In such cases, the unit must be cleaned, see section 4.1 Cleaning.
– If the fan has an important supply function, regular performance-related maintenance is necessary. In cases of longer
periods of standstill, maintenance must be carried out when the unit is restarted
– The following must be checked:
• Secure mounting of the fan on subsurface / on the system
• Dirt deposits
Remove, see Cleaning 4.1
• Mechanical damage
• Tightness of screw connections, particularly impeller mounting. Do not loosen screws in the process!
• Casing surface coating (Casing/impeller surface coating)
• Free movement of the impeller
• Bearing noises
• Vibrations
See Fault causes 4.2
• Power consumption according to type plate
• Function of safety components (e.g. motor protection switch)
must
be
observed
for
Decommission unit, replace damaged parts
If the impeller is not moving freely, refer to Fault causes 4.2
Replace bearing
See Fault causes 4.2
7
voltage
controlling
through
Replace in case of doubt
Repair
Replace if necessary
UK
phase
control.
Publicité
Chapitres
