Flowserve 2 Series P0 Type Kämmer Pneumatic Actuator - Manual (Page 7)

7
Flow Control Division
Kammer Control Valves
8 ASSEMBLE ACTUATOR
8.1 Valve with action: Air-to-open
(For valve with action air-to-close proceed with 5)
(refer to fig. 1)
8.1.1 Refit the actuator stem (1), washers (12), dia-
phragm (13) and piston (14).
8.1.2 Secure the actuator stem (1) with a wrench across
the flats on the stem’s lower part against rotating and
retighten the retaining nut (26).
8.1.3 Refit bracket (10) and coupling (27) or (28).
8.1.4 Replace spring set (16).
8.1.5 Replace the upper case half (17).
8.1.6 Insert 2 at least 35 mm long (de)compression screws
through the upper and lower actuator case halves and
tighten with nuts (15) in equal measures until the
casing halves contact.
8.1.7 Insert and tighten the 2 remaining short case retaining
screws (19).
8.1.8 As required replace the long (de)compression screws/
nuts with the short screws/nuts.
8.1.9 Refit yoke with 4 screws (21).
8.1.10 As required refit the actuator assembly to the valve.
8.2 Valve with action: Air-to-close
(refer to fig. 2)
8.2.1 Refit the actuator stem (22), spring set (24), piston
(14), diaphragm (13) and washers (12) .
8.2.2 Secure the actuator stem (1) with a wrench across
the flats on the stem’s lower part against rotating and
retighten the retaining nut (26).
8.2.3 Refit bracket (10) and coupling (27) or (28).
8.2.4 Replace the upper case half (25).
8.2.5 Insert 2 at least 35 mm long (de)compression screws
through the upper and lower actuator case halves and
tighten with nuts (15) in equal measures until the
casing halves contact.
8.2.6 Insert and tighten the 2 remaining short case retaining
screws (19).
8.2.7 As required replace the long (de)compression screws/
nuts with the short screws/nuts.
8.2.8 Refit yoke with 4 screws (21).
8.2.9 As required refit the actuator assembly to the valve.
7 DISASSEMBLE ACTUATOR
(refer to Figs. 1 and 2)
7.1.1 Remove the actuator from the valve.
WARNING: In many actuators the actuator springs
(see Figs. 1and 2, pos. 16 or 24) are pre-tensioned.
For this reason NEVER remove the case screws (see
Figs. 1 and 2, pos. 19) without using a suitable press
or the method described below.
7.1.2 If long (de)compression screws are not already fitted
to the actuator remove 2 diametrically opposite case
retaining screws (19).
7.1.3 Insert 2 at least 35 mm long (de)compression
screws, and tighten them with nuts (15) hand tight.
7.1.4 Remove the 2 remaining short case retaining screws
(19).
7.1.5 Unscrew the long (de)compression screws in equal
measures until the actuator springs are fully
decompressed and the upper case is loose.
7.2 Valve with action: Air-to-open
(For valve with action air-to-close proceed with 3)
(refer to fig. 1)
7.2.1 Remove the upper case half (17).
7.2.2 Remove spring set.
7.2.3 Remove coupling (27) or (28) and bracket (10).
7.2.4 Secure the actuator stem (1) with a wrench across
the flats on the stem’s lower part against rotating
and remove the nut (26).
7.2.5 Remove following parts: piston (14), diaphragm
(13), washers (12) and actuator stem (1).
7.2.6 Remove 4 screws (21) and remove yoke.
7.2.7 Remove the guide (4) and upper yoke plate (8).
7.3 Valve with action: Air-to-close
(refer to fig. 2)
7.3.1 Remove the upper case half (25).
7.3.2 Remove coupling (27) or (28) and Bracket (10).
7.3.3 Secure the actuator stem (1) with a wrench across
the flats on the stem’s lower part against rotating
and remove the nut (26).
7.3.4 Remove following parts: washers (12), diaphragm
(13), piston (14), and actuator stem (1).
7.3.5 Remove spring set (24)
7.3.6 Remove 4 screws (21) and remove yoke.
STOP!