Installation; General Notes - Mankenberg DM Originalbetriebsanleitung

Original operating manual
Pilot-controlled pressure regulators DM
The fitting is generally not capable of standing alone:
The spring module may have a greater weight/volume than the basic body with its pipe
connections.
note
Handle with care so that the fitting does not tip over during transport/storage..
» Pressure-regulating valves are generally supplied with a slackened spring. The spring must not be
pretensioned by means of the adjusting screw until after it has been installed, during initial start-up.

6 Installation

6.1 General notes

The same installation regulations apply to a fitting as to the system into which it is installed. The following
additional notes apply:
» Section Transport and storage [} 8] should also be observed during transport to the installation site.
» The installation site to allow perfect functioning of a fitting should be a section of pipe without any flow
disruptions, without any angles and without any restrictors or shut-off devices close to the fitting, either
upstream or downstream (optimum distance = 10 x DN). If this does not apply, the installation situation
should be checked with the plant operator and/or MANKENBERG.
» The statics of the pipeline must be designed so as to take account of the weight of the fitting – particularly
those with an eccentric mass. If required, the pipeline may have to be properly supported on both sides next
to the fitting (or at the fitting itself) – particularly in the case of fittings with a substantial mass and especially
if vibrations are to be expected in the system. When the fitting is supported, it is important to check that all
functioning parts (adjusting screws, springs) remain capable of moving freely and are not blocked.
» The fitting must not be coated with thermal insulation.
» The fitting must not be coated with thermal insulation.
A fitting that is operated at a medium temperature above 130°C needs undisrupted removal of
heat if it is to function perfectly.
Failure to observe this instruction may cause damage to the fitting and hence in the
caution
pipeline system as well.
» To protect internal functional parts (e.g. the seat) against damage and/or blockages, it may be necessary to
install a strainer and/or filter upstream of the fitting.
The mesh size of the sieve/filter for protecting against aggregates in the pipe section should be
selected by the plant operator according to the operating conditions.
Failure to observe this instruction may impair the function of the fitting and lead to
note
damage.
DM-4.X.222 Issue 18.07.2022
9
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