10
GB
IMAT PT- E
C) End cap (Part N° 30) assembly, figures 12, 13 and 14:
• Assemble one end cap at a time.
• Lubricate the body.
• For spring return actuators, insert the springs in each end
cap according to the desired configuration, as shown in
figure 12 and related tables. For models PT100→PT800
insert spring cartridges as shown in figure 13.
SPRING SET CONFIGURATION
PT045B configuration:
PT050B configuration:
• Fit end cap o-ring seal (14) into the groove on both end
caps.
• Fit end caps onto the body (50), verifying that the o-ring
remains in the groove.
• Only for actuators with 50% or 100% stroke adjust-
ment, ensure that the adjustment screws 221G/222G
are completely screwed into the end-cap.
• Insert the cap screws (13) and tighten each only par-
tially. Complete tightening by making 1-2 turns for each
screw in the sequence shown in figure 14 until tight-
ening is completed. See the table for screw tightening
torque.
D) Assembly of stop cap screws (Part 02) and stroke
adjustment for models PT050 N→PT800, figures 15
and 16:
• Insert on both stop screws (02) the nut (04), the washer
(03) and the o-ring (11).
• Fit the stop cap screws (02) in the body.
• Stroke adjustment for actuators with standard type “ST”
rotation / assembly (clockwise to close).
Stroke adjustment in close position: with the actuator in
close position 0°, screw or unscrew the right (from top
view) stop cap screw until the desired stop position is
achieved.
Then tighten the stop adjustment nut (04) to lock it in
place.
Stroke adjustment in open position: with the actuator in
open position 90°, screw or unscrew the left (from top
view) stop cap screw until the desired stop position is
achieved. Then tighten the stop adjustment nut (04) to
lock it in place.
For spring return actuators, it could be necessary to
make rotation tests to verify the correct stroke adjust-
ment in open position.
Spring Set
S1-1
S1-2
S2-2
S2-3
S3-3
Side B
PT045B
Spring type
1 (green)
1 (green)
2 (red)
2 (red)
3 (black)
Side A
PT045B
Spring type
1 (green)
2 (red)
2 (red)
3 (black)
3 (black)
Spring
Set
S1
S2
S3
S4
S5
S6
S7
S8
PT050B
Internal
Spring type
1(green)
------------
------------
------------
------------
1 (green)
1 (green)
1 (green)
PT050B
External
Spring type
------------
2 (black)
2 (black)
3 (red)
3 (red)
2 (black)
2 (black)
3 (red)
PT050B
Internal
Spring type
------------
------------
------------
------------
1 (green)
1 (green)
1 (green)
1 (green)
PT050B
External
Spring type
2 (black)
2 (black)
3 (red)
3 (red)
2 (blac
k)
2 (black)
3 (red)
3 (red)
Side B Side A
Progetto1_Layout 1 12/04/13 18.36 Pagina 1
Spring Set
S1-1
S1-2
S2-2
S2-3
S3-3
Side B
PT045B
Spring type
1 (green)
1 (green)
2 (red)
2 (red)
3 (black)
Side A
PT045B
Spring type
1 (green)
2 (red)
2 (red)
3 (black)
3 (black)
Spring
Set
S1
S2
S3
S4
S5
S6
S7
S8
PT050B
Internal
Spring type
1(green)
------------
------------
------------
------------
1 (green)
1 (green)
1 (green)
PT050B
External
Spring type
------------
2 (black)
2 (black)
3 (red)
3 (red)
2 (black)
2 (black)
3 (red)
PT050B
Internal
Spring type
------------
------------
------------
------------
1 (green)
1 (green)
1 (green)
1 (green)
PT050B
External
Spring type
2 (black)
2 (black)
3 (red)
3 (red)
2 (blac
k)
2 (black)
3 (red)
3 (red)
Side B Side A
Progetto1_Layout 1 12/04/13 18.36 Pagina 1
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