Oerlikon RUVAC WA, Инструкция по установке и эксплуатации

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ATEX
10 GA03107_002_A4 - 09/2015 - © Oerlikon Leybold Vacuum
RUVAC Roots Pumps WA/WAU ATEX
Category 3 (inside)
Category 3 (inside) and (outside)
Important information for operating the RUVAC WA/WAU
251/501/1001/2001 ATEX Category 3 Roots pumps in potentially
explosive atmospheres
The Roots pumps RUVAC WA/WAU 251/501/1001/2001 ATEX Category 3
(inside) respectively 3 (inside) and 3 (outside) have been designed and manu-
factured especially for the purpose of complying with the requirements of
Equipment Group II, Category 3 of the “ATEX Directive (Directive 94/9/EG) for
conforming utilisation of equipment and protection facilities in explosion haz-
ard areas”.
Classification and Marking of the Pump
The pumps RUVAC WA 251 to 2001 ATEX Category 3 (inside) and (outside)
fulfil both for the inside (process gas side) as well as also for the outside of
the pump the basic safety requirements laid down in the guideline.
These pumps are marked as follows:
(inside) 3G IIC TX
1)
(50 Hz)* (12 °C <Ta< 40 °C) X
II
respectively
(inside) 3G IIC TX 1) (50 Hz)*
II
(outside) 3G IIC T3/T4 - (12 °C <Ta< 40 °C) X
* The ATEX certification is valid only for operation at 50 Hz. The temperature class “outside” may
be subject to further restrictions due to the motor used.
1) TX refers to the temperature classes and depends on the specific usage conditions.
Explanations on this are given in the following text.