Flowserve XL90 Series - Manual (Page 3)

Mounting Instructions for XL90 with NAMUR Shaft
Connection
1. Mount the bracket to the actuator. Finger tighten the
bracket bolting.
2. If required, install a coupler on the actuator shaft. Make
sure the shaft and coupler are centered. See Figure 2.
3. Verify the orientation of the actuator and coupler flats
match the positioner flats on the end of the shaft. Loosen
the cam if necessary. (See “Cam Installations”
instructions.)
4. Install the positioner onto the bracket. Make sure positioner
shaft and coupler are engaged and centered. Finger tighten
positioner bolts.
5. Proceed to “Connecting XL90 Positioner Ports.”
Mounting Instructions for XL90 Positioner on
Sereg Rotary Actuators
1. Mount the positioner to the transfer case plate in the
proper orientation. Tighten the four bolts.
2. Loosen jam nut (see “Cam Installation” instructions).
3. Mount the follower arm, lockwasher and nut on the end of
the shaft and tighten nut. Carefully hold the shaft with
wrench on shaft flats.
4. With valve in closed position, make sure follower pin lever
is mounted parallel to valve lever, flush with end of valve
shaft and the nut is tight.
5. Place follower pin (mounted to the lever that is mounted to
the valve shaft) into follower arm slot and bolt the transfer
case plate in place finger tight only. See Figure 3.
6. Orient the cam to align the “L” shaped line located on the
left side of the characteristic curve through the middle of
the span arm roller. (See Figure 5.) The valve should be
seated when this alignment is done. (See “Cam Installation”
instructions.) For correct cam characteristics, see Table I.
7. Proceed to “Connecting XL90 Positioner Ports”
instructions.
Connecting XL90 Positioner Ports
1. For double acting actuators, connect positioner ports 1
and 2 to the actuator. Port 1 is always connected to the
actuator port used to drive the actuator away from its start
or fail position (the factory cam setting is full clockwise at
minimum input signal).
NOTE: For single acting, spring return actuators, plug
output port 2.
2. Connect supply air to the port marked “SUPPLY.”
3. Connect air (for pressure inputs) or instrument tubing
or wiring (for 4-20 mA inputs). For current inputs, the
terminal is marked (+) and (-) inside the I/P module. The
I/P is factory calibrated and should not require adjust-
ment. If adjustments are necessary, see “Calibrating I/P
Module Zero and Span Settings” section.
CAUTION: Signal air pressure higher than 30 psi may
damage the module gauge and instrument signal cap-
sule; a 3-15 psi instrument signal is recommended on
the pneumatic module.
4. Stroke actuator/valve two or three times to align positioner,
coupler and actuator. With 50% input (actuator/valve at 45
degrees), tighten all mounting bolts. Stroke actuator/valve
again to verify there is no misalignment throughout the
stroke.
5. Calibrate valve and adjust cam if necessary. (See “Cam
Installation” and “Positioner Calibration” instructions.)
Cam Removal: Disconnect cam return spring. With a wrench
carefully placed on the output shaft (if necessary), loosen and
remove the jam nut. Remove pressure from the span arm by
pushing it away from the cam. Remove the cam.
Cam Installation:
1. A) For NAMUR shaft end connections make sure shaft is
properly aligned with coupler or actuator.
B) For Sereg actuators, make sure follower pin is in
follower arm groove.
2. Push span arm away from shaft to avoid pressure on the
cam.
Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611 48-3
Table I: Cam Characteristic Identification Sereg
Cam Guide
Sereg Actuator NR NX NL
Plug Characteristic MaxFlo Linear Linear Equal Percent Linear Equal Percent
Fail Position Close Open Close Open Close Open Close Open Close Open
Direct Acting
Linear A B N M A B
Positioner Equal % C E Q P N M C E A B
Equal % Mod B A
Reverse Acting
Linear B A M N B A
Positioner Equal % E C P Q M N E C B A
Equal % Mod A B