36
EB 3131 EN
Malfunctions
7.5 Ordering spare parts and
operating supplies
Contact your nearest SAMSON subsidiary
or SAMSON's After-sales Service for infor-
mation on spare parts, lubricants and tools.
8 Malfunctions
The malfunctions listed in Table 7 are caused
by mechanical faults and incorrect regulator
sizing. In the simplest case, the functioning
can be restored following the recommended
action. Special tools may be required for re-
pair work.
Exceptional operating and installation condi-
tions may lead to changed situations that
may affect the control response and lead to
malfunctions. For troubleshooting, the condi-
tions, such as installation, process medium,
temperature and pressure conditions, must
be taken into account.
SAMSON's After-sales Service can help
during troubleshooting. Further information
is available in section 10.1.
Contact SAMSON's After-sales Service for
malfunctions not listed in the table and when
the malfunction cannot be remedied as de-
scribed.
Note
7.3
Tightening torques
Component
DN
Tightening
torque in Nm
Plug (3)
15 to 25
32 to 50
70
110
Screws (15)
15 to 32
40 to 50
8
18
Diaphragm
nut
15 to 50
22
7.4
Preparation for return ship
-
ment
Defective devices can be returned to
SAMSON for repair. Proceed as follows to
return devices to SAMSON:
1. Put the regulator out of operation (see
section 9).
2. Decontaminate the regulator. Remove
any residual process medium.
3. Fill in the Declaration on Contamination.
The declaration form can be download-
ed from our website at
u
www.samsongroup.com > Service &
Support > After-sales Service > Returning
4. Continue as described on our website at
u
www.samsongroup.com > Service &
