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Malfunctions
3. Insert the valve spring (5), if installed, in-
to the body.
4. Place the actuator on the body. Tighten
screws (15). Observe tightening torques
specified in section 7.3.
5. Put the regulator into operation (see sec-
tion 5.3).
7.3 Tightening torques
Part
Plug (3)
Screws (15)
Nut (6.3)
7.4 Preparation for return
shipment
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.
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 > Return-
ing goods.
34
Tightening
DN
torque in Nm
15 to 25
70
32 to 50
110
15 to 32
8
40 to 50
18
15 to 50
22
3. Proceed as described in
u www.samsongroup.com > SERVICE &
SUPPORT > After-sales Service > Return-
ing goods.
7.5 Ordering spare parts and
operating supplies
Contact your nearest SAMSON subsidiary
or the SAMSON After-sales Service for in-
formation on spare parts, lubricants and
tools.
8 Malfunctions
The malfunctions listed in Table 6 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.
Note
Contact SAMSON's After-sales Service de-
partment for malfunctions not listed in the ta-
ble and when the malfunction cannot be
remedied as described.
EB 3130 EN
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