Samson EB 01b, Монтаж и эксплуатация

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8-1
EB 01b_EN
February 2022 edition
Subject to technical changes
Malfunction
8 Malfunction
When rectifying the faults, chapter “1 Safety instructions and safety measures” must be observed.
8.1 Detecting and rectifying errors
Type of fault Possible cause Measure
Leaks in the pipe connection The fl ange connection of the
lined valve is leaky
Tighten the fl ange screws.
An excessive tightening torque when retightening the fl ange screws
can damage the valve and pipe.
The permissible torque for retightening the pipe fl ange screws is
limited.
Retighten the fl ange connection with the respective tightening torque,
see Table 15-3 or Table 15-4 in Chapter “15.1.1 Tightening torques”.
If necessary, increase the torque 20%.
The fl ange connection is still
leaky after retightening
Loosen the fl ange connection and remove the valve, see chapter “1
Safety instructions and safety measures“.
Check the plane parallelism of the fl ange connection and correct if it is
not suf fi cient.
Check the surfaces on all fl anges. If the plastic lining is damaged,
replace the valve together with its fl ange seal.
Check the fl ange seals. If the seals are damaged, replace them.
Leaks in the body parts The bonnet fl ange connection
loosened
Retighten the fl ange connection with the respective tightening torque,
see Table 1 in Chapter “15.1.1 Tightening torques”.
Body parts untight after
retightening Replace the body sealing and/or valve, see chapter “1 Safety
instructions and safety measures“.
Increased medium fl ow rate
with valved closed
Leakage in the closed position Remove and inspect the valve, see chapter “1 Safety instructions and
safety measures”.
The valve is damaged Repairs are necessary.
Remove the valve, see chapter “1 Safety instructions and safety
measures”.
Request spare parts from PFEIFFER, see Chapter “15.2 Spare parts”.
For the required repair instructions, see Chapter “12 Repairs”.
Leaks in the stem sealing
(Additional possible causes
and measures on the
following page)
Medium escapes from the test
connection Repairs are necessary.
Remove the valve, see chapter “1 Safety instructions and safety
measures”.
Disassemble the valve and replace the bellows or diaphragm.
Request spare parts from PFEIFFER, see Chapter “15.2 Spare parts”.
For the required repair instructions, see Chapter “12 Repairs”.
With the option “adjustable
stuf
fi ng box”, medium
escapes from the stuf fi ng box
This version does not have a test connection on the bonnet. The
backup packing is leaky in the delivered state above a gas pressure of
approx. 2 bar. This is obtained with an adjustment path of 3 mm with
the red paint sealed backup packing.
NOTE