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WARNING

  Power off

Be sure to turn off power prior to any inspection/maintenance and 

installation works. Be careful power is not turned on unintentionally 

while working on the dampener. In a noisy or dark place, display a sign 

of "Men Working" near the power supply switch.

  Do not remodel the auto-dampener

Never remodel the auto-dampener. Remodeling may cause serious 

injury or damage due to electrical shock. We are not responsible for 

any accident or damage arise from modification.

  Prohibited installation/storage place

To avoid fire or injury, do not install or store the dampener in:

• Flammable atmosphere.

• Dusty place.

• Corrosive atmosphere.

  Ventilation

Risk of poisoning. Keep your working site ventilation when handling a 

toxic/odoriferous liquid. 

  Wear protective clothing

Be sure to wear protective clothing such as safety goggles, protective 

gloves etc. during maintenance and/or inspection.

 Returns

When the dampener is sent back to IWAKI, drain the liquid out of the 

dampener and clean thoroughly with water to prevent any accidents in 

transportation.

No remodeling

Prohibited

Wear protective 

gear

Power off

Safety instruction

Summary of Contents for PDA-20W

Page 1: ...Read this manual before use of product IWAKI Auto Dampener PDA W Instruction Manual This is patent pending product ...

Page 2: ...nspection 5 2 Outline of product 5 3 Model code 5 4 Specification 6 5 Dimensions and mass 7 6 Structure and names of parts 8 7 Main parts and labelling 9 Installation 10 1 Before use 11 2 Installation 11 3 Piping 12 Operation 14 1 Preparation for operation 15 2 Operation 15 3 Stopping 16 Maintenance 17 1 Troubleshooting 18 2 Maintenance and inspection 19 3 Consumable parts 19 This instruction manu...

Page 3: ...t of hazards and loss which may be brought if the instructions are not observed or if the auto dampener is wrongly used Warning Non observance or misapplication of the contents of the Warning could lead to death or injury Caution Non observance or misapplication of the contents of the Caution could lead to injury or damage Prohibited action or procedure is indicated Inside or near this circle a co...

Page 4: ...se from modification Prohibited installation storage place To avoid fire or injury do not install or store the dampener in Flammable atmosphere Dusty place Corrosive atmosphere Ventilation Risk of poisoning Keep your working site ventilation when handling a toxic odoriferous liquid Wear protective clothing Be sure to wear protective clothing such as safety goggles protective gloves etc during main...

Page 5: ... time with the liquid inside the gas may be generated to penetrate the bellows and cor rode the metallic parts When the pump or dampener is stopped for 2 days or more operate them for about 10 minutes a day to replace the air Air exhaust port Do not choke make tube dia smaller air exhaust port to avoid bellows deformation due to residual air Before operating the pump dampener Fully open pump sucti...

Page 6: ... 4 1 Unpacking and inspection 5 2 Outline of product 5 3 Model code 5 4 Specification 6 5 Dimension and mass 7 6 Structure and names of parts 8 7 Main parts and labelling 9 Product outline ...

Page 7: ...pen the liquid pulsation The liquid discharged from the pump is transferred to outlet through bellows At this moment the sup ply air is automatically adjusted by the pressure regulating valve and this functions to dampen the liquid pulsation Inlet Pressure adjusting valve Pressure adjusting valve Air supply Bellows Outlet Air exhaust PDA 20 W Series code Capacity Max discharge capacity of correspo...

Page 8: ...d dampening effect can not be obtained Note Performance and dimensions may be changed without prior notice Model PDA 40W PDA 80W Applied pump FW 40 FS 60 FW 80 Max liquid press MPa Supply air press MPa 0 2 0 5 Pulsation press width Mpa Liquid pipe connection Air piping connection Wet end material PDA 20W FW 20 FS 30 10 80 0 5 0 5 Within 0 06 in case liquid viscosity is within 1 50 mPa s Rc 1 4 Fem...

Page 9: ... 7 7 PDA 20 40 80W A B C D E F G H Mass kg PDA 40W 388 188 255 229 ø25 ø22 23 36 162 12 PDA 80W 408 208 323 266 ø25 ø22 25 38 188 17 PDA 20W 348 148 215 191 ø19 ø16 18 33 135 7 5 Dimension and mass ...

Page 10: ...ex screw 2 SS M3 12 28 Hex bolt 6 SS 29 Spring washer 6 SS M4 26 Bellows plate 1 SUS304 27 Bellows flange 2 SUS304 No Name Q ty Material Remarks 1 Bellows unit 1 PTFE PFA 2 Cylinder 1 A6063 Fluor coat 3 Plate 1 A5052 Fluor coat 4 OUT guide 1 SUS304 5 Slider 1 PPS 6 Stud bolt 4 SUS304 PTFE coat 7 Valve A 2 SUS304 8 Pin nut 1 SUS304 9 Pin 1 SUS304 10 Spring A 1 SUS304WPB 11 Spring B 2 SUS304WPB 12 C...

Page 11: ... 9 9 IN label IN label OUT label Cover Fix the cover at installation Suction port Air supply port Nameplate shows model and MFG No Air exhaust port OUT label Discharge port 7 Main parts and labelling ...

Page 12: ... 10 1 Before use 11 2 Installation 11 3 Piping 12 Installation ...

Page 13: ...nect the electrodes with any device including our controllers when using solvent 5 Surface temperature of the dampener Model PDA 80W Cylinder surface temp 40 deg C Liquid temp Room temp 80 deg C 20 deg C PDA 20W 180 deg C 74 deg C 20 deg C PDA 40W 180 deg C 66 deg C 20 deg C 1 Connect tubes to Inlet and outlet of the dampener horizontally 2 Install the dampener between the pump and the filter as c...

Page 14: ...ance more than that of specified max pressure of the dampener 6 For mounting of pipe joints pay attention so that the air can not be sucked in Especially the air sucked in suction piping causes unstable or impossible discharge 7 PFA tubes are equipped for suction and dis charge ports Tube diameters are PDA 20W 19 16 mm PDA 40W 25 22 mm PDA 80W 25 22 mm Use the tube fittings which correspond to tub...

Page 15: ...ion of the bellows CAUTION Install a pressure reducing valve for each combination of the pump dampener If only a pressure reducing valve control several combinations of pump dampener the pulsation reduction effect will reduce or the bellows are deformed because of the pressure down at dampener inlet 2 In case that air adjusting valve is installed If the valve marked with on the illustration below ...

Page 16: ... 14 1 Preparation for operation 15 2 Operation 15 3 Stopping 16 OPERATION ...

Page 17: ...r pressure does not exceed specified pump pressure 1 Preparation for operation 2 Operation CAUTION Right after the pump starts the dampener exhausts air intermittently This is because the pressure adjusting valves function until load fluctuation is gone Note that this is not abnormal Installing the muffler into the exhaust port the exhaust noise can be reduced Fitting bore RC1 4 CAUTION Check that...

Page 18: ...o release the residual pressure CAUTION Do not run the pump in time lag operation In the time lag operation the bellows of auto dampener may fail in a short time Also pulsation dampening effect can not be obtained When the auto dampener is used the time lag should be zero Time lag operation When proximity switches detects the bellows movement and the switching over signal is transferred to the sol...

Page 19: ... 17 1 Troubleshooting 18 2 Maintenance inspection 19 3 Consumable parts 19 Maintenance ...

Page 20: ...h Deterioration or deforma tion of O ring Tighten Replace O ring Air pressure adjusting valve at exhaust side is clogged Disassemble and clean Inspection check items a Filter blinding or drying b If filter is wetted enough a Check air filter a Refer to item Air Piping on Installation section Air is mixed in the liquid a If specified air pressure is added to dampener b If the dampener is not used b...

Page 21: ...rged normally from dampener pump b Confirm the vibration width of pressure gauge to see no change in discharge capacity and pressure c Confirm if pipe does not vibrate abnormally Periodical inspection Make the inspection once a month or more If the air leakage through cylinder part is confirmed stop the pump after pump discharge side pressure is released to leave it until it is cooled down And the...

Page 22: ... S A IWAKI PUMPS UK LTD IWAKI Schweiz AG IWAKI Austria GmbH IWAKI Holland B V IWAKI Iberica Pumps S A IWAKI Belgium n v FAX 2154 1028 FAX 02 990 42888 FAX 48 24 2346 FAX 8 511 72922 FAX 9 2742715 FAX 66 81 16 61 FAX 1 64 49 92 73 FAX 1743 366507 FAX 26 674 9302 FAX 2236 33469 FAX 297 273902 FAX 943 628799 FAX 1367 2030 IWAKI America Incorporated IWAKI Pumps Australia Pty Ltd IWAKI Singapore Pte Lt...

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