Special Hazards - Mankenberg Rp 824 Originalbetriebsanleitung

Original operating manual
pilot-operated pressure regulators RP 824

4.3 Special hazards

Before a fitting is removed from the system or before a fitting is dismantled but partially
remains in place, the pressure in the system on both the inlet and outlet side must be
completely reduced so that there is no uncontrolled flow of the medium out of the system.
danger of
In the case of toxic or hazardous media, the system must be completely drained before the
fatalities
fitting is removed.
Caution is required with residues that might continue flowing.
Only valves with open spring:
It is necessary to ensure on site, by an appropriate installation or by providing safety devices
and/or positioning a clearly visible warning sign in accordance with the regulations of EN 292
danger of
(formerly accident prevention regulations), that effective protection is afforded against
being
objects catching on an exposed spring in the pressure-regulating valve.
crushed
If required, MANKENBERG will assist in selecting a suitable type with closed bonnet.
If a pressure-regulating valve has to be dismantled:
The following must be observed at all costs:
danger of
First release the tension fully on the spring by turning the setting screw on the spring module
fatalities
anticlockwise. When doing so, be sure to follow the notes in section
[Page 14]!
Then either seal off the two shut-off valves installed before and after the fitting in accordance
with the MANKENBERG installation recommendation and vent the pressure-regulating valve
or remove the pressure from the section of the system and then remove the fitting from the
pipeline.
If a fitting is removed from a system with a toxic medium and is taken out of the plant:
it must be properly decontaminated before repair.
caution
operating_manual_RP824_en_de.25.1 Issue 22.12.2025
7
Initial start-up
Made in Germany