Installation Steps - Mankenberg DM Originalbetriebsanleitung

Original operating manual
Pilot-controlled pressure regulators DM
In the case of toxic or hazardous media, a leakage line must be installed, that discharges
leaking medium safely and pressureless in case of a damaged control device, thus avoiding
dangerous situations.
danger of
The diameter should match the connection of the leakage line at the bonnet.
fatalities
» The pressure-regulating valve should first be adjusted during the initial start-up by setting the adjusting
screw on the spring module to the operating conditions – see section Initial start-up [} 14].
However, it is necessary to ensure before installation that there is sufficient room for the appropriate socket or
open-jawed spanner above/below the adjusting screw.
As a general rule, pressure-regulating valves should be installed in horizontal lines so that
the spring module (with open spring or with bonnet) points vertically down.
Only for gaseous media installation with the spring pointing vertically up is permissible.
important
note
In case the valve must be emptied completely during operation (angle valves), it must be
installed with the bonnet pointing upwards.
If the valve must be installed in a vertical or diagonal line, increased friction of the functional
parts leading to increased abrasion and impaired regulation are to be expected.

6.3 Installation steps

» Fittings should only be finally unpacked at the installation site and inspected for damage prior to assembly.
Damaged fittings must not be installed.
» It is necessary to ensure that the covers have been removed from all the connection branches before
installation.
» The fitting should be inspected to ensure that it is clean. Interior parts must be free of liquid
(e.g.condensate): if necessary, connecting branches should be cleaned before installation with clean
compressed air.
» The type and dimensions of the line or tank connections must match the fitting to be installed and be flush
with the connecting surfaces of the fitting as well as in a parallel plane to the fitting itself.
» If the fitting is marked with an arrow on the housing, the flow in the pipe section must match the marked
direction of flow.
If installed in the opposite direction to the arrow, the fitting will not perform its intended
function.
caution
» The fitting must be installed without any tension. In the case of an already installed system, the geometry of
the pipeline must match the face-to-face length of the fitting.
It is necessary to ensure that even under operating conditions no tension from the pipeline
is transferred to the fitting.
note
DM-4.X.222 Issue 18.07.2022
11
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