Samson 42-20, Mounting And Operating Instructions

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9-8 EB 3007 EN
Servicing
Mounting the operating diaphragm
1. Place the new operating diaphragm on
the diaphragm stem (22) ensuring the
tab of the diaphragm is in the right di-
rection.
2. Place on the diaphragm plate (19).
3. Screw the nut (18) while holding the bot-
tom diaphragm stem (22) or opposite nut
stationary using a suitable tool. Observe
the specified tightening torques (see
'Tightening torques' in Annex).
4. Fix the nut (12) and diaphragm stem
(57) in place with dowel pin (18).
5. Place on the bottom diaphragm case
(14) on the diaphragm stem (22).
6. Place on the set point springs (16),
spring plate (24, 26) and needle bearing
with washer (25).
7. Screw on the set point adjuster (17).
8. Place the diaphragm actuator on the
valve and fasten tight the coupling nut
(11). Observe the specified tightening
torques (see 'Tightening torques' in An-
nex).
9. Screw on the control lines (20). Observe
the specified tightening torques (see
'Tightening torques' in Annex).
10. Put the regulator back into operation (see
the 'Start-up' section).
9.7 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.
Spare parts
See Annex for details on spare parts.
Lubricant
Contact SAMSON's After-sales Service for
more information on lubricants.
Tools
Contact SAMSON's After-sales Service for
more information on tools.