2 BAR 70 en 15
9 Safety instructions
Please follow the below-mentioned safety instructions dur-
ing installation, maintenance and operation of the high-
performance valve:
1. For safety reasons, you may not do any modifications to
the mode of operation of the high-performance valve
or its actuator.
2. Assembly work at the high-performance valve must be
done only by qualified personnel!
3. A functional test is associated with the risk of sudden
uncontrolled movement of the high-performance valve
upon supply of energy. Therefore, ensure that the valve
does not move or tip over during the functional test
under any circumstances.
4. Exercise caution while installing valves in the failsafe
position "spring opens" If the on/off disc extends beyond
the installation length of the valve, then the on/off (but-
terfly) valve must be closed before installation (pneu-
matic, hydraulic etc.). It is mandatory to ensure that the
energy supply lines are secured and not damaged or
ruptured during installation under any circumstances.
If the energy supply is interrupted suddenly, the valve
opens abruptly. This can lead to serious injury and to
material damage.
5. There is a significant risk of injury from accidental oper-
ation of the remote control during any maintenance
work. If you intend to use a remote control for working
with the high-performance valve, then an additional
emergency stop switch that acts as a locking device is
required at the actuator.
6. Make sure that cleaning agents do not cause any
unwanted chemical reactions upon contact with possi-
ble residues in the high-performance valve.
7. While working in the area of the sealing surface of the
on/off disc, secure the on/off disc using wooden
wedges to exclude crushing hazard. Pay attention to
the fact that you do not damage the sealing surface of
the on/off disc as a result.
8. If the seals are destroyed by an excessively hot medium,
the used medium can escape at the shafts.
10 Maintenance
10.1 Cleaning and maintenance intervals
High-performance valves of the type BAR are mostly main-
tenance-free.
Figure 14 Seals and bushes
If the medium carries along contamination with itself that
may impair the seal-tightness of the valve, then the sealing
surface of the on/off disc must be cleaned regularly. Con-
tamination may damage the sealing surface of the on/off
disc or the sealing element.
Auxiliaries that may attack the sealing surface or the elastomer
seal may never be used for removing residues. Use water,
soapsuds or other liquid solvents and a soft, lint-free rag.
At the same time also check the condition of retainer rings
(419, 471), the support rings (406), the shaft seal ring (429,
475) and the bearings (424) (see Figure 14 seals and
bushes).
While assigning cleaning and maintenance work to quali-
fied external firms and / or qualified external personnel, it is
mandatory to make them aware of the dangers of the used
medium and possibly present residues. The IMO is handed
over.
10.2 Preventive maintenance recommendation
1. For operating pressures of CL300/ PN40 and below:
A) Spare set ”Seat” and ”Shaft Sealing” to be replaced latest
at 750.000 cycles or 3 years operations.
B) Spare set ”Complete” to be replaced latest 1.500.000
cycles or 6 years operations.
2. For pressure class CL600 / PN64:
A) Spare set ”Seat” and ”Shaft Sealing” to be replaced latest
400.000 cycles or 2 years operations.
B) Spare set ”Complete” to be replaced latest 800.000 cycles
or 4 years operations.
3) This recommendation applies to both control as well
as on-off valves
10.3 Preliminary
Suitable spare parts sets should be kept ready and / or pro-
vided on time to avoid longer downtimes during mainte-
nance work. Please take into account the delivery and
transport times.
Before dismantling the on/off (butterfly) valve, the follow-
ing prerequisites must be met:
□ Ensure that the pipelines are pressureless and free of
process-related gases and fluids.
□ Inform yourself about the medium that last passed
through the on/off (butterfly) valve. Residues may occur
in the valve. Make sure that there is no poisoning or
acid-burn risk when coming in contact with the resi-
dues. Protect yourself using appropriate protective
clothing, safety goggles and a breathing mask, where
appropriate. It is mandatory to follow the safety instruc-
tions for operating personnel.
471 419 320 419 471
424 475 429 429 475 424
471
406
Never use cutting, scraping or grinding tools such as
files or sandpaper. Moreover, do not use any solvent-
based cleaning agents that may cause unwanted
chemical reactions upon contact with residues of the
medium or attack
the seal.
Check whether the on/off (butterfly) valve has
already cooled down or warmed up to the extent that
there are no more hazards due to
extreme temperatures.
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