Leybold Oerlikon, Trivac NT16, NT25, Rotary Vane Vacuum Pump ...
Leybold Oerlikon, Trivac NT16, NT25, Rotary Vane Vacuum Pump ...
Leybold Oerlikon, Trivac NT16, NT25, Rotary Vane Vacuum Pump ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
ATEX<br />
G<br />
For areas with an explosive atmosphere caused by gases, vapours or<br />
mists in the air.<br />
The pump is not suited for utilisation in dusty areas.<br />
IIA, IIB or<br />
IIC Explosion Groups: these are subdivisions for equipment belonging to<br />
Group II which is employed in connection with some protection types.<br />
This subdivision is based on the concept of the maximum permitted<br />
gap and the minimum ignition current of the explosive mixture. Refer to<br />
Annex A of the European Standard EN 50014. (EN 50014 electrical<br />
apparatus for potentially explosive atmospheres — General requirements.<br />
Equipment marked with IIB is suited for applications which require<br />
equipment with the marking IIA. Correspondingly equipment marked<br />
with IIC is suited for applications which require equipment belonging to<br />
Exploding Group IIA or IIB.<br />
T3, T4 Temperature class: classification of operating means depending on<br />
their maximum surface temperature, in agreement with the following<br />
table:<br />
Temperature class<br />
Maximum surface<br />
temperature (°C)<br />
T1 450<br />
T2 300<br />
T3 200<br />
T4 135<br />
T5 100<br />
T6 85<br />
<strong>Pump</strong>s belonging to temperature class T4 (with 50 Hz electric motors)<br />
must only be operated with gases or vapours which exhibit an ignition<br />
temperature of over 135° C.<br />
<strong>Pump</strong>s belonging to temperature class T3 (with 60 Hz electric motors)<br />
must only be operated with gases or vapours which exhibit an ignition<br />
temperature of over 200° C.<br />
The temperature class and the actual maximum surface temperature<br />
of the equipment includes a safety margin with respect to the minimum<br />
ignition temperature of the potentially explosive atmosphere as demanded<br />
by EN 13463-1.<br />
50 Hz<br />
60 Hz Frequency of the electric motor – at a higher frequency the pump will<br />
run faster and produce a higher surface temperature.<br />
Ta Permissible ambient temperature for operating the pump<br />
12 °C < Ta < 40 °C.<br />
X<br />
Special operating conditions need to be complied with! The special<br />
conditions and notes provided in the Operating Instructions apply.<br />
10 130002780_002_A0 - 12/2008 - © <strong>Oerlikon</strong> <strong>Leybold</strong> <strong>Vacuum</strong>
Change language