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Samson 3271 Original Instructions
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T
ranslation of original instructions
EB 8310-6 EN
Edition October 2019
T
ypes3271 and 3277 Pneumatic Actuators
Actuator area:
240, 350 and 700cm²
T
ype3271
T
ype3277
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 Safety Instructions and Measures
7
Notes on Possible Severe Personal Injury
9
Notes on Possible Personal Injury
10
Notes on Possible Property Damage
11
Warnings on the Device
12
2 Markings on the Device
13
Actuator Nameplate
13
Label Indicating Actuator with Preloaded Springs
14
3 Design and Principle of Operation
15
Type 3271
15
Type 3277
16
Direction of Action
16
Signal Pressure Routing
17
Type 3271
17
Type 3277
17
Fail-Safe Action
17
Version with Direction of Action "Actuator Stem Extends
17
Version with Direction of Action "Actuator Stem Retracts
18
Versions
18
Accessories
18
Technical Data
19
4 Shipment and On-Site Transport
23
Accepting the Delivered Goods
23
Removing the Packaging from the Actuator
23
Transporting and Lifting the Actuator
23
Transporting the Actuator
24
Lifting the Actuator
24
Storing the Actuator
27
5 Mounting and Assembly
29
Preparation for Installation
29
Mounting the Device
29
Mounting the Actuator Onto the Valve
30
Connecting the Air Supply
32
6 Start-Up
33
Preloading the Springs
34
Tensioning the Springs
34
Increasing the Actuator Thrust
35
Adapting the Travel Range
36
Travel Stop
36
Bottom Travel Stop (Minimum Travel)
36
Top Travel Stop (Maximum Travel)
36
Version with Handwheel
37
Extending the Actuator Stem Manually
38
Retracting the Actuator Stem Manually
38
7 Operation
39
Throttling Service
39
On/Off Service
39
Manual Mode (Versions with Handwheel Only)
40
Additional Notes Concerning Operation
40
8 Malfunctions
41
Troubleshooting
41
Emergency Action
42
9 Service and Conversion Work
43
Periodic Testing
44
Preparation for Servicing or Conversion Work
44
Mounting the Actuator on the Valve after Servicing or Conversion Work
45
Service Work
45
Replacing the Diaphragm
45
Replacing the Actuator Stem Seals
49
Conversion Work
51
Reversing the Direction of Action (Fail-Safe Action)
51
Ordering Spare Parts and Operating Supplies
54
10 Decommissioning
55
11 Removal
57
Removing the Actuator from the Valve
58
Relieving the Spring Compression in the Actuator
58
12 Repairs
59
Returning Devices to SAMSON
59
13 Disposal
61
14 Certificates
63
15 Annex
65
Tightening Torques, Lubricants and Tools
65
Spare Parts
65
After-Sales Service
68
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Samson 3271 Specifications
General
Keys
32
Velocity Sensitivity
Yes
Aftertouch
No
Pitch Bend
Yes
Modulation Wheel
Yes
MIDI I/O
USB
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