Samson 3755 Mounting And Operating Instructions Download Page 11

EB 8393 EN 

 11

Design and principle of operation

(Actuator)

(Supply)

(Exhaust)

2

5

1

4.1

4

3

6

1

Diaphragm

2

Supply plug

3

Exhaust plug

4

Bypass restriction screw

4.1 Lock nut

5

Bypass duct

 1)

6

Duct for pressure balancing

 1)

1) 

Through hook-up in version with 

stainless steel body

SIG

Signal

SUP

Supply air

OUT Output (to actuator)

EXH

Exhaust air

Connections of aluminum version:

Connections of stainless steel version:

Sectional drawing of version with aluminum body:

 

(the same principle applies to the version with stainless steel body):

Signal

Bypass

SUP

SIG

OUT

EXH

SUP

SIG

OUT

EXH

Fig. 1: 

Pneumatic connections and sectional drawing

Summary of Contents for 3755

Page 1: ...Translation of original instructions EB 8393 EN Type 3755 cast aluminum body Type 3755 stainless steel body Edition November 2017 Type 3755 Pneumatic Volume Booster...

Page 2: ...fter sales Service Department aftersalesservice samson de The mounting and operating instructions for the devices are included in the scope of delivery The latest documentation is available on our web...

Page 3: ...sions in mm 16 3 6 1 Aluminum version 16 3 6 2 Stainless steel version 17 4 Measures for preparation 19 4 1 Unpacking 19 4 2 Transporting and lifting 19 4 2 1 Transporting 19 4 2 2 Lifting 19 4 3 Stor...

Page 4: ...ered polyethylene filter disk 26 6 2 Preparation for return shipment 26 7 Malfunctions 27 7 1 Emergency action 27 8 Decommissioning and disassembly 28 8 1 Decommissioning 28 8 2 Removing the pneumatic...

Page 5: ...possible uses Reasonably foreseeable misuse The Type 3755 Volume Booster is not suitable for the following applications Use outside the limits defined during sizing and by the technical data Furtherm...

Page 6: ...eumatic actuator as a result of the supply pressure level it must be restricted using a suitable supply pressure reducing station Responsibilities of the operator The operator is responsible for prope...

Page 7: ...TICE Risk of damage to the volume booster due to contamination Incorrect handling may allow dirt or other foreign particles to enter the device and lead to malfunctioning or damage No substances must...

Page 8: ...8 G 1 Supply air and actuator 14 NPT signal 18 NPT 2 Exhaust version Sintered polyethylene filter disk 0 Flanged on threaded exhaust port ISO 228 G 1 3 Flanged on threaded exhaust port 1 11 NPT 5 Flow...

Page 9: ...Ambient temperature range Supply max 10 bar 145 psi Signal max 7 bar 101 5 psi Output max 7 bar 101 5 psi kVS Supply kVS Exhaust Dynamic set Standard 2 5 m h 2 5 m h SAMSON AG Germany Made in Germany...

Page 10: ...he differential pressure at the diaphragm causes the supply plug 2 to open providing supply air up to a maximum of 10 bar to the actuator In contrast the signal to vent the actuator causes the exhaust...

Page 11: ...cing 1 1 Through hook up in version with stainless steel body SIG Signal SUP Supply air OUT Output to actuator EXH Exhaust air Connections of aluminum version Connections of stainless steel version Se...

Page 12: ...ss steel silencer Connecting thread Item no G 1 8504 1009 1 NPT 8504 1010 When a screwed on silencer is used mount the volume booster with the silenc er facing downward Mount the silencer properly usi...

Page 13: ...0410 6488 O ring 74x3 NBR 70 Shore A 8421 0513 Stainless steel M5x25 fastening screw 8333 2503 Conversion kits including mounting parts see section 5 4 Item no Conversion to Type 3755 1 with sintered...

Page 14: ...size and density Class 4 Oil content Class 3 Pressure dew point Class 3 or at least 10 K below the lowest ambient temperature to be expected Connecting thread Supply SUP G optionally NPT Actuator outp...

Page 15: ...m powder paint coated RAL 1019 1 4404 and 1 4571 EN AC 43000KF according to DIN EN 1706 EN AC 43000KF according to DIN 1706 and EN AW 5083 H112 according to DIN EN 755 3 Exhaust side Silencer with sin...

Page 16: ...ciple of operation 3 6 Dimensions in mm 3 6 1 Aluminum version 107 155 70 52 15 105 120 180 Type 3755 1 with sintered polyethylene filter disk for low noise venting Type 3755 2 Flanged on threaded exh...

Page 17: ...EB 8393 EN 17 Design and principle of operation 3 6 2 Stainless steel version max 190 100 60 67 1 2 5 2 x 90 95 165 9 15 25 11 5 76 SW46 120 90...

Page 18: ...18 EB 8393 EN...

Page 19: ...e diately before mounting 4 2 Transporting and lifting 4 2 1 Transporting Protect the volume booster against exter nal influences e g impact Protect the volume booster against mois ture and dirt Obser...

Page 20: ...To meet the requirements of safety instru mented systems SIS a solenoid valve can also be connected between the pneumatic volume booster and the pneumatic actuator Fig 6 4 1 3 2 5 4 1 4 1 2 2 5 5 1 Po...

Page 21: ...e volume booster can be used when the exhaust port is attached to a pipe When a screwed on silencer is used read section 3 3 on page 12 5 2 Pneumatic connections The air connections for signal supply...

Page 22: ...s purging of the actuator spring chamber or discharged through the pipe Make sure sufficiently sized cross sec tions are chosen on sizing the piping and screw fittings 5 3 Start up High sound pressure...

Page 23: ...g and operating instructions and initialize the positioner 5 After adjusting the bypass restriction screw lead seal the setting 5 3 2 Tuning to the control loop requirements The bypass setting can be...

Page 24: ...sten flanged on threaded exhaust port 5 onto the body tightening the new eight M5x25 screws in a crisscross pat tern with 4 2 Nm tightening torque at the maximum 5 4 2 Converting Type 3755 2 to Type 3...

Page 25: ...4 5 6 1 M5x16 screw 2 Retaining plate 3 Sintered polyethylene filter disk 4 M5x25 screw 5 Screwed flange 6 O ring Fig 7 Type 3755 1 low noise venting over a sintered polyethylene filter disk Fig 8 Typ...

Page 26: ...Wear hearing protection Before opening the volume booster put it out of operation Refer to Fig 7 1 Unscrew the eight M5x16 screws 1 and remove the retaining plate 2 from the body 2 Remove sintered po...

Page 27: ...oster and air connections occurs Screw fittings are not securely tightened Check whether pipe screw fitting leaks and is screwed on properly Flow rate decreases Contamination or wear of the sintered p...

Page 28: ...g protection 8 1 Decommissioning To decommission the volume booster for maintenance work or disassembly proceed as follows 1 Disconnect the supply pressure of the pneumatic actuator 2 Disconnect the s...

Page 29: ...he After sales Service De partment at aftersalesservice samson Addresses of SAMSON AG and its subsid iaries The addresses of SAMSON AG its subsid iaries representatives and service facilities worldwid...

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Page 32: ...2021 11 03 English SAMSON AKTIENGESELLSCHAFT Weism llerstra e 3 60314 Frankfurt am Main Germany Phone 49 69 4009 0 Fax 49 69 4009 1507 samson samson de www samson de EB 8393 EN...

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