Stübbe Series MDM 902, Оригинальное руководство по эксплуатации

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Installation and connection
8. Check the fi ll level in the upper part (2) and depending on
the situation proceed as follows:
–
If the fi ll level is suf fi cient: continue with process step 9.
– OR –
– If the fi ll level is too low: Top up the transmitter fl uid
(4) in the upper part (2). Repeat process steps 1 to 8
until there is suf
fi cient transmitter fl uid in the pressure
gauge.
9. Check the thread seal, and depending on the type of thread
proceed as follows:
–
Imperial thread: Ensure that the gasket (3) seals the
pressure gauge.
– OR –
– Pipe thread and NPT thread: Wrap a maximum of 4
turns of sealing tape around the thread of the pressure
gauge (1).
10. Screw the pressure gauge (1) clockwise into the upper
part (2) ( → 9.4 Tightening torques, Page 12).
11. Ensure the pressure gauge (1) is zeroed.
The fi tting is now ready for mounting on the pipeline.
5.4 Installing fi tting in pipe
The pressure gauge must be mounted on the fi tting.
The fi tting must be fi lled with the transmitter fl uid.
The pressure gauge must be fi lled with the transmitter fl uid.
WARNING
Risk of poisoning and environmental damage from
medium.
Leak due to faulty installation.
Installation work on the pipes should only be performed
by technicians who have been specially trained for the
pipework in question.
NOTE
Material damage due to contamination of the fi tting!
Make sure no contamination reaches the fi tting.
Flush the pipe with a neutral medium.
5.4.2 Connection with solvent welding/butt-weld
spigot ends
Use suitable solvent welding/fusion socket ends.
1. Prepare pipe ends according to connection type.
2. Align the
fi tting together with the pressure gauge, prefer-
ably upwards.
3. Adhesively apply or weld fi tting with solvent welding/fusion
socket ends.
5.4.3 Connection with internal thread fi xed
1. Prepare pipe ends according to connection type.
2. Check the thread seal on the bottom section of the
fi tting,
and depending on the type of thread proceed as follows:
–
Imperial thread: Mount a gasket on the threaded con-
nector.
– OR –
– Pipe thread and NPT thread: Wrap a maximum of 4
turns of sealing tape around the thread of the threaded
connector.
3. Align the fi tting together with the pressure gauge, prefer-
ably upwards.
4. Screw the fi tting on to the threaded connector
( → 9.4 Tightening torques, Page 12).
5.5 Performing the hydrostatic test
Pressure test using neutral medium, e.g. water.
1. Pressurize the fi tting, ensuring
– Test pressure < permissible system pressure
– Test pressure < 1.5 PN
– Test pressure < PN + 5 bar
2. Check the fi tting for leaks.
8 MDM 902 BA-2017.09.21 EN 301 287