DMN-WESTINGHOUSE Explosion-Proof Rotary Valves
Code: RV-Ex.pro-E.B.01.D 05-2016
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3. Installing the Rotary valve in a potentially explosive atmosphere
Remove all packing material and preservatives.
Check for any transport damage.
Check valve interior is free from foreign material.
Check if there are any potentially explosive atmosphere, oils,
acids, gases, vapours, radiation etc. present during installation.
Please follow safety instructions of chapter 1 when installing the
Rotary valve in a potentially explosive atmosphere.
Does the following information on the nameplate of the Rotary
valve corresponds to the potentially explosive on-site atmosphere.
Pay specific attention to:
Unit group
Explosion-proof category
Dust- or Gas area
Temperature class
Maximum surface temperature
If an explosion takes place the rotary valve must stop immediately,
a sensor suited for the purpose must do this automatically.
This to prevent transport of burning or smoldering product over
the rotary valve further into the system.
The sensor and control unit are not part of the standard supply of
DMN.
Ensure that a sensor and control unit are installed in the system.
The DMN-WESTINGHOUSE rotary valves are pressure shock
resistant up to 10 bar.
If an explosion could occur above 10 bar, then the user of this
equipment must ensure adequate safety measures are installed.
Turning the rotor is prohibited.
Danger to fingers and hands.
Always ground the rotary valve, use the flange connection bolts,
or the optional earth-stud on end cover or motor base plate.
Check that the electrical leakage resistance is less than 10
6
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