Mankenberg DM 652 ATEX H2 Originalbetriebsanleitung Seite 18

Original operating manual
Pressure reducing valve DM 652 ATEX H2
10 Normal operation
A properly designed and correctly adjusted pressure control valve works automatically within its pressure control
range and does not need any form of auxiliary energy.
To obtain optimum regulating accuracy, the desired operating pressure should be in the upper
part of the setting range of the pressure-regulating valve. This is described in detail in the
Mankenberg section "DM" under "Design of pressure control valves".
note
In case of doubt, contact Mankenberg Service – see section
It is necessary to ensure that the selected materials of the parts of the valve in contact with
media are suitable for the media used. The manufacturer accepts no liability for damage
caused by corrosion due to aggressive media on parts made of unsuitable material.
danger of
Failure to observe this instruction may cause severe or fatal injury or damage to the
fatalities
interior of the piping system and valve.
The valve has functional parts that must maintain their ease of movement. Make sure that both
the external springs and inner parts in contact with the medium cannot freeze nor become
blocked by dirt. Comply with the maintenance intervals.
caution
Failure to observe this instruction may cause damage to the pipeline system and to the
valve.
In some series a control line is laid between the pressure-regulating valve and the pipeline –
see section
danger
Damage to this control line may result in danger to life and limb and may impair the
function of the pressure-regulating valve or even lead to complete failure.
Pressure-regulating valves are designed for the operating point in accordance with the order.
This operating point may occasionally be changed by the customer by means of the adjusting
screw. However, the setting of the adjusting screw must not be permanently altered (e.g. by
note
adding a motorized actuator).
Failure to observe this instruction may cause damage to the pressure-regulating valve.
It is recommended that the valve should be inspected to ensure that it is functioning correctly after each new
start-up.
DM 652 ATEX H2-4.X.23.1 Issue 12.09.2023
General notes [Page 11].
Further information
18
[Page 30].
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