Initial Start-Up - Mankenberg Rp 824 Originalbetriebsanleitung

Original operating manual
pilot-operated pressure regulators RP 824

10 Initial start-up

No fitting may be operated that does not have a sufficient pressure and temperature range for
the operating conditions – see section Intended use and markings on the fitting. The
manufacturer MANKENBERG should be consulted in the case of any applications outside of
danger of
this range.
fatalities
Failure to observe this regulation may mean danger to life and limb and may cause
damage to the pressure-regulating valve.
The fitting is supplied with no tension on the spring – hence no defined operating pressure has been set in the
factory. During initial start-up, the valve must be adjusted to the system parameters. The adjusting screw on the
pilot valve should be tensioned for this purpose:
Clockwise rotation (when looking onto the adjusting screw) has the following effect:
on the pressure-reducing valve: the outlet pressure increases.
on the back pressure regulator the inlet pressure increases.
The target value to be set by means of the adjusting screw shall be defined by the operator of the system and
must be calibrated with the aid of a pressure gauge on the plant side (or some other pressure monitoring
device).
When looking onto the adjusting screw:
Never fully remove the adjusting screw (by rotating it anticlockwise).
Do not block the adjusting screw in the position of maximum tension (when rotating it
caution
clockwise).
At the beginning of or shortly after the initial start-up, the sieve or the filter insert of any
installed strainer/filter should be cleaned in order to avoid blocking the strainer/filter.
danger
After the initial start-up:
Check the seals on screw-mounted parts of the body and reseal if necessary. If required, ask
MANKENBERG for the tightening torques.
caution
Observe the relevant notes in section
To speed up the filling and emptying of the control chamber during start-up, restrictors D1, D2 and D3 should be
fully opened. To vent the pressure-reducing valve, slightly undo the venting screw on the restrictor assembly.
Do not unscrew it completely. Tighten the venting screw again when no more air comes out.
Restrictors D1, D2 and D3 are for adjusting the control valve to the operating conditions of the system.
Basic setting (factory-set):
control restrictor D1 opened by approx. 1 revolution
damping restrictors D2, D3 opened by approx. 2 revolutions
Never fully close the restrictors!
caution
operating_manual_RP824_en_de.25.1 Issue 22.12.2025
Troubleshooting help [Page 17].
14
Made in Germany