Troubleshooting Help - Mankenberg UV 3.5 ATEX H2 Originalbetriebsanleitung

Original operating manual
Back pressure regulators UV 3.5 ATEX H2
During maintenance work (apart from visual inspections) the relevant recommendations and
warning notes in section Troubleshooting help [} 20] should be observed.
danger
Failure to observe this warning may mean danger to life and limb and may cause
damage to the pipeline system and to the fitting.
When a fitting that has previously been dismantled is being put back into service, the fitting should be checked
for proper sealing capacity and function as well as correct adjustment of the adjusting and functional
components!

12 Troubleshooting help

When troubleshooting, the section Safety instructions [} 9] must be observed.
Spare parts must be ordered with all the information on the type plate.
Only original parts from the manufacturer MANKENBERG may be installed.
MANKENBERG specialists are available to rectify faults as quickly as possible, for addresses see section
Further information [} 28].
If functional or corrosion damage is detected during maintenance or after a fault:
consult MANKENBERG to find out whether a more suitable fitting is available or whether the
damaged part can be supplied in a better-suited material.
note
special tools required:
To dismantle the following pressure control valves, a special tool is required (can be requested
at MANKENBERG if required):
note
- pressure reducing valve DM 662
- back pressure regulator UV 5.1 up to and including DN25 / G1"
- and vacuum control valve deducted from these, e.g. VV 5.1
Type of fault Action
Leakage at a Tighten the screwsclockwise (tighten flange screws crosswise).
connection body If the screws of the body connection have to be loosened or removed (= unscrewing
parts (flange or in the anticlockwise direction):
clamp ring):
reseal connection
To prevent any risk for operating personnel, make sure that this repair measure is
only carried out on a section of pipe that is not under pressure. Take note of section
Special hazards [} 10] and then sectionInstallation [} 11].
UV 3.5 ATEX H2-4.X.22.6 Issue 21.12.2022
Danger of fatalities
20
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