Troubleshooting Help - Mankenberg EB 1.12 ATEX Originalbetriebsanleitung

Original operating manual
Bleeding and Venting Valves EB 1.12 ATEX

11 Troubleshooting help

Be sure to observe section Safety instructions [} 8] when rectifying faults.
Spare parts must be ordered with all the details on the nameplate. Only original parts from the manufacturer
MANKENBERG may be installed.
MANKENBERG experts are available to help in rectifying faults as quickly as possible. See section Further
information [} 24] for the addresses.
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
note damaged part can be supplied in a better-suited material.
Type of fault
Leakage at a connection
body parts (flange or clamp
ring):
reseal connection
Functional fault:
leckage of the seat drains
liquid from the bleeding pipe
Clean and check
functional parts
EB 1.12 ATEX-4.X.222 Issue 26.07.2022
Action
Tighten the screws clockwise (tighten flange screws crosswise).
If the screws of the body connection have to be loosened or removed (=
unscrewing in the anticlockwise direction):
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 [} 8] and then section Installation
[} 10].
Possible reasons:
» A foreign object may be jammed in the seat and be preventing proper
sealing
» The lever system is moving to heavy due to dirt or corrosion
» The float is to heavy due to deposits
Cleaning is necessary: The bleeding and venting valve must be
disassembled.
To prevent any risk for operating personnel, make sure that this repair
measure is only carried out on a valve that is not under pressure. Take note
of section Special hazards [} 8].
When the armature is pressureless, disassemble the bleeding and venting
valve by loosening the flange or clamp connection, take out and clean float
and lever system. Here all parts of the maintenance set should be renewed
After that, reassemble the armature, make sure that float and levers are
moving easily
17
danger of fatalities
danger of fatalities
www.mankenberg.com