
11
Appendix
Operation and maintenance instructions for forced cooling fan /VE with part number groups 2097... and
2098...
Operating Instructions – EDR..71 – 315, EDRN63 – 315
240
ATEX_IECEx_BA_08052017_EN.docx
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After electrical connection is complete, the terminal box must be attached with screws
tightened to a torque of 4.5 Nm.
After installation
and during commissioning a test run must be carried out. Here, care must be taken that the
fan wheel rotates in the same as the direction of the arrow marked on the inner surface of the air intake grille
and therefore blows air over the motor to be cooled.
Caution:
The cooling effect is considerably lower if the direction of rotation is incorrect. There is a risk of the
motor to be cooled overheating and the surface temperature of the fan motor of T=120 °C being exceeded.
During operation
care must be taken that especially in dusty atmospheres that there is no excessive build-up
of dust on the fan blades, as this can also result in imbalance which reduces the operating life and may result
in friction which could cause ignition. This also applies to atmospheres containing particles, e.g. in the wood
processing industry or in coal grinding mills.
Caution:
Prior to opening the fan a cooling down phase of 5 min. must be waited.
WISTRO
units are normally supplied ready for installation. The bearings are maintenance-free. The radial shaft
seal has been designed for an average service life of 20,000 operating hours.
In case of longer operating periods, the external fan must be replaced with a new unit.
Repairs or modifications of the unit must only be carried out in consultation with WISTRO.
Manufacturer:
WISTRO Elektro-Mechanik GmbH
Berliner Allee 29-31
D30855 Langenhagen
4.5
+0.5
Nm
25896334/EN – 06/2019
Содержание EDR200
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