Richter PSG/F series, Operating Manual

Page: 9 / 18

Series PSG/F, TSG/F
Page 9
9540-050-en
Revision 10
TM 8361 Edition 10/2011
7 Operation
7.1 Initial commissioning
Normally, the valves have been tested for leaks with
air or water. Prior to initial operation check cover
screws. For torques see
Section 1.2 .
Unless otherwise agreed, there could be
residual amounts of water in the flow section
of the ball valve; this could result in a
possible reaction with the medium.
To prevent leaks, all connection screws should be
retightened after the initial loading of the valve with
operating pressure and operating temperature. For
torques, see
Section 1.2 .
7.2 Improper operation and their
consequences
Non-observance of the pressure-temperature
diagram can lead to damage.
7.3 Shutdown
The local regulations are to be observed when
dismantling the valve.
Prior to undoing the flange connection ensure, that the
plant is depressurised and emtied.
Prior to starting any repair work, the valve is
to be thoroughly cleaned. Even if the valve
has been properly emtied and rinsed,
residual medium may still be found in the valve,
After dismantling, immediately protect the valve
flanges against mechanical damage with flange caps.
See also
Section 6.1 .
8 Malfunctions
Flange connection valve/pipe is leaking
Retighten the flange screws to a tightening torque
according to
Section 1.2 . If this does not remedy
the leak, the recommended torques may be
exceeded by 10%.
If this also fails to stop the leak, dismantle and inspect
the valve.
9 Maintenance
All repair work is to be performed by qualified
personnel using the appropriate tools. Generally
recognised practice in mechanical engineering is
to be observed.
For the arrangement, designation and item
numbers of all parts of the valve, see
Section 10 .
Spare parts are to be ordered with all the details in
acc. with the valve identification.
Only original spare parts may be installed.
Make sure that the sight glass is empty when
work is performed on it.
See also
Section 7.3 .
To prevent leaks, a regular check of the connection
screws should be made in line with the operating
requirements.
For torques see
Section 1.2 .
Clean the discs from outside when required.
Use mild cleaning agents.
Clean the discs from the inside when requried.
Observe
Section 7.3.