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04.06.2019 explosion-proof stand fan WPA-E-N/Ex
2. Application
WPA-E-N/Ex explosion proof stand fans are intended for use in areas of explosion risk, where
where explosive atmosphere, (i.e. mixture of flammable substances in form of gas and vapour
with the air, whereby after ignition –in atmospheric conditions –the burning mass would expand
within the whole non-burning mixture) can occur.
Increased fan pressure of these devices allows their application in a system cooperating with
local exhausts, filtering units, as well as in a ventilation system of significant flow resistances.
The fans can work in temperature range -20C up to +40C. They are meant for forwarding the
dry air of dustiness not exceeding 0,3 g/m³, without viscous impurities.
Pursuant to the ATEX 2014/34/EC Directive and PN-EN 13463-1 the appliance features level
of protection: HIGH as appliance classified in group II, category 2; can work in areas where
explosive atmospheres are possible to occur. The device can be applied in zones 1, 2(G).
The appliance is marked on the Ex classification board:
Marking of the operational conditions of the device: group / category / hazard / class.
marking for explosion proof properties of the appliance,
group II –the device is designed for work on-ground, in factories in areas where explosi-
ve atmospheres occur, but this cannot be methane risk (firedamp) neither carbon dust
occurrence,
category 2 –the device is designed for application in areas where explosive atmosphe-
res are sporadically likely to occur,
“c” –signifies the constructional protection,
Ex –mark of the electrical device –constructed and tested according to the European Stan-
dards for work in areas of explosion hazard,
execution “e” –type of construction of the motor (a motor of increased safety)
gas explosion group II –occurring in factories of on-ground location –the fans are construc-
ted according to EN 14986:2009, whereby they can be applied for gas in explosion groups
II and hydrogen,
temperature class T3 –the surface temperature of any part of the appliance should not ex-
ceed 200ºC;the device can be used safely in explosive atmospheres belonging to classes
T1, T2, T3.
3. Reservations of Producer
Manufacturer accepts no liability for any consequences following from the operational use
that is in contradiction to the purpose of application.
Installing any additional elements not belonging to the normal device structure (or acces-
sory set) is not acceptable.
Do not undertake any structural changes or constructional modifications on the device on
one’s own.
Protect the appliance’s housing from mechanical damage.
Before the installing check the load carrying capacity of the wall/building structure in points
where the stand fan shall be installed. Unsure mounting could cause hazard to personnel
/ people in the vicinity.
Do not use the fan for conveying the air containing viscous impurities that
could deposit (build up)on the device surface, especially on the impeller.
