Samson EB 14b, Монтаж и эксплуатация

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12-3
EB 14b_EN
January 2022 edition
Subject to technical changes
Repairs
Ö
Loosen the nuts (17) and remove the bonnet (7).
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Remove the tension spring (19).
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Disassemble the fastening ring (5).
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Remove the PTFE seal ring (4) or the metal seat ring including
the corresponding graphite rings (4).
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Check the seal ring as well as all plastic and graphite parts
for damage and, in the case of doubt, replace them.
It is essential to pay attention to cleanliness during assembly.
Ö
Assemble the valve as described in Chapter “3.5 Butter fl y
valve assembly”.
12.2.2 Replacing the seal ring in butter fl y
valves from DN | 400 (NPS16)
Ö
Place the butter fl y valve on an even and clean work surface
so that the seal ring is easy to reach.
Ö
Loosen the screws (26) and disassemble the fastening ring
(5).
Ö
Remove the PTFE seal ring (4) or the metal seat ring including
the corresponding graphite rings (4).
Ö
Check the seal ring as well as all plastic and graphite parts
for damage and, in the case of doubt, replace them.
It is essential to pay attention to cleanliness during assembly.
Ö
Assemble the valve as described in Chapter “3.5 Butter fl y
valve assembly”.
12.3 Additional repairs
Ö
In the case of additional major damage, it is recommended
to have repairs performed by PFEIFFER.
Info
Info
12.4 Sending devices to PFEIFFER
Defective butter fl y valves can be sent to PFEIFFER for repair.
Proceed as follows to send devices:
Danger due to contaminated valves!
Ö
When returning a used valve to PFEIFFER for service, decon-
taminate the valve properly in advance.
Ö
When returning a used valve, include the safety data sheet
for the medium as well as con
fi rmation of decontamination of
the valve. Otherwise the valve will not be accepted.
PFEIFFER recommends documenting the following contamination
data in the form FM 8.7-6 “Declaration regarding the contami-
nation of PFEIFFER valves and components”.
Ö
Include the following information for returns:
− Manufacturer number
− Butter fl y valve type
− Article number
− Nominal size and version of the butter fl y valve
− Manual valve/automated valve
− Medium (designation and consistency)
− Medium pressure and temperature
− Flow rate in m³/h
− Bench range of the actuator
− Number of actuations (year, month, week or day)
− Installation drawing if available
− Completed declaration regarding contamination. This
form is available at

www.pfeiffer-armaturen.com.
WARNING
Tip