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DAU-20  Instruction  Manual 

 

 

1. Outline of Equipment 

1-1. Intended Use and Prohibitions of Equipment 

This diaphragm type dry vacuum pump performs evacuation by reciprocating motion of rubber 
membrane (diaphragm).   
Please take note of the following prohibitions to use Equipment correctly. 
 

 

<Prohibitions>

 

 

 

 

(1) This pump is for evacuation only. Never use for pressurization. 
(2) Do not do resale, repair, and remodeling that we agreed on.

 

 

 

(3) This pump is not made of corrosion resistant specification. Be sure to apply it to 

the clean normal temperature air or gas of equivalent characteristics. 

(4)  Although  corrosion  resistance  resin  for  external  packaging  of  DTU-20  partly, 

there are chemicals that erode the corrosion resistance. Prevent splashing the 
following  chemicals  on  the  pump.  It  is  recommended  to  wipe  off  chemicals 
attached regardless description in the followings. 

  Acetone · Ethyl ether · Ethyl acetate · Flora and fauna oil, etc. 

(5) Never absorb the gas that mixed dust, dust, moisture. 
(6) Do not operate long time in environment near the atmospheric pressure.

 

 

 

1-2. Equipment Specifications

 

Table 1 

–1 Equipment Specifications 

Model Name 

DAU-20x 

(X: A=100V, B=115V, C=200V, D=220V, E=230V)

 

Exhaust 

velocity

 

50Hz 

20L/min 

60Hz 

23L/min 

Ultimate pressure 

200Pa 

Motor 

1

φ

,AC (

±

10%) 

80W, 4 P, condenser driven, w/thermal protector (auto reset type)

 

Rated current 

(A) 

100V 1.46/1.46(50Hz/60Hz)  D 

220V 0.7/0.72(50Hz/60Hz) 

B    115V 1.30/1.30(50Hz/60Hz)  E 

230V 0.67/0.68(50Hz/60Hz) 

200V 0.77/0.74(50Hz/60Hz)   

Rotating speed 

min-1

 

100V 1320/1610 

220V 1310/1610 

B    115V 1295/1605 

230V 1310/1610 

200V 1315/1615 

 

Inlet-exhaust pipe 

O.D.Φ10XI.D.Φ6(Rc1/8) 

Weight 

7.5kg 

Operating ambient 

temperature 

5

40

External dimensions 

161mm(W)327×mm(L)×217mm(H) 

Noise

 

52 dB(A) 

Over Voltage Category 

 

Pollution Degree 

WARNING 

CAUTION 

Содержание DAU-20 Series

Страница 1: ...uction Manual before starting the pump in order to use the pump effectively and safely Please keep this Instruction Manual carefully We reserve our right to change dimensions or specifications of the...

Страница 2: ...nd vacuum pumps Safety requirements Part2 Vacuum pumps IEC EN 61010 1 2010 A1 2019 Safety requirement for electrical equipment for measurement control and laboratory use Part1 General requirement foll...

Страница 3: ...nformity with the following standards BS EN 1012 2 1996 A1 2009 Compressors and vacuum pumps Safety requirements Part2 Vacuum pumps BS IEC EN 61010 1 2010 A1 2019 Safety requirement for electrical equ...

Страница 4: ...ng Operation 4 3 3 Installation location 4 3 4 Verification Run in Installation 5 3 5 Piping 5 3 6 Storage 5 4 Caution in Operation 5 4 1 Caution in Operation 5 4 2 When Thermal Protector Operated 5 4...

Страница 5: ...ase use when requesting overhaul Sales service agency and the where to make contact Drawing List Fig 2 1 DAU 20 Appearance 3 Fig 3 1 Piping Example for Evacuation of Container 5 Table 1 1 Equipment Sp...

Страница 6: ...ump correctly Always read Directions to use safely in particular Storage of Instruction Manual Please keep Instruction Manual carefully After reading store this Instruction Manual on the location wher...

Страница 7: ...ap attached to Inlet exhaust pipe 2 pcs 3 Whether damaged positions are found 4 Whether loosen external screws or inlet exhaust pipe Whether coming off positions are found In case there is trouble by...

Страница 8: ...eaviest injuries of users Incorrect operation may result in possibility to cause death or heaviest injuries of users Incorrect operation may result in possibility to cause death or heaviest injuries o...

Страница 9: ...ort circuit grounding reduces the risk of electric shock by providing an escape wire for the electric current If the product is equipped with a cord having a grounding wire with an appropriate groundi...

Страница 10: ...ve the power cord from the wall socket before connecting any wiring Connecting wiring with the power on may result in electric shock 7 Always ensure that the pump is correctly earthed A dedicated eart...

Страница 11: ...articles resulting from wear of components use a dust mask and gloves during repair work Installation 1 This pump is a machine having precise clearance Satisfy the following requirements when conducti...

Страница 12: ...r immediately 10 Expose the pump for cooling for about 30 minutes and start work after confirming the pump is cooled down Internal pump is hot soon after operation and there is a risk of burn Installa...

Страница 13: ...own to the ambient temperature If operated in high temperature life of the pump shall be extremely reduced 10 Do not apply back pressure in the pump exhaust side when start Load to the motor may cause...

Страница 14: ...to wipe off chemicals attached regardless description in the followings Acetone Ethyl ether Ethyl acetate Flora and fauna oil etc 5 Never absorb the gas that mixed dust dust moisture 6 Do not operate...

Страница 15: ...to liquid state and remains in the pump chamber This pump is not corrosion resistant When air is inhaling from the gas ballast valve just before of the compression process of the pump the condensable...

Страница 16: ...operating Start operation after closing the gas ballast valve always When the gas ballast valve is used it is generally considered that the absorbed medium reacts in the pump and exhaust vent On that...

Страница 17: ...g No flammability risk h When Equipment is installed temperature in pump circumference shall not exceed 40 104 degF 3 3 Installation location Select a location where dust and moisture are small and i...

Страница 18: ...ve a blocking valve as shown on Fig 3 1 in order to maintain vacuum status between an inlet pipe and container of the pump 5 When connecting a pipe to inlet exhaust port always hold the inlet exhaust...

Страница 19: ...usage 4 2 When Thermal Protector Operated This pump incorporates an automatic reset type thermal protector It automatically cuts off the motor power circuit to prevent the motor from being damaged by...

Страница 20: ...cult to start follow the procedure described below 1 Open the inlet port to atmosphere and repeat switch ON OFF two or three times until the pump starts If still it does not start warm up the ambient...

Страница 21: ...the equipment and piping make the ultimate pressure higher 2 Ultimate pressure becomes higher in case there is resource of gas such as vacuum leakage in the vacuum route 5 2 Exhaust velocity Flow rat...

Страница 22: ...c standard option 1 Replacement of diaphragms 2 Replacement of valves 6 2 Maintenance During an operation of the vacuum pump check the following items at least once in 3 days 1 Generation of abnormal...

Страница 23: ...0 hr Valve 8 Fluorine Rubber 6 000 hr Gas ballast cap 1 6 000 hr Rubber leg 4 6 000 hr L form coupling 2 PP Different according to working condition application Gas ballast nipple 1 PP Different accor...

Страница 24: ...pple Deformation hardening crack split leak etc Visual inspection L form nipple Deformation hardening crack split leak etc Visual inspection Abnormal bearing Allophone Auscultation 6 4 Replacement of...

Страница 25: ...Spanner Opposite sides 13 mm 0 5 thickness lower than 5 5 mm 0 2 Torque spanner 4 N m Opposite sides 17 mm 0 7 5 Wipe off solvent Chemical without influence to rubber parts such as ethyl alcohol 6 Pap...

Страница 26: ...e all sheets at the same time When working on replacement wear gloves always There is risk of injury CAUTION 4 Connecting pipe Upper and lower 3 Valve retainer 2 Valve retainer cover 1 Panel Both side...

Страница 27: ...valve in orientation as shown in right drawing Upper level pump head mounting direction Notch direction Mount the lower level valve in orientation as shown in left drawing Lower level pump head mount...

Страница 28: ...ith a spanner of opposite side 13 mm 0 5 lightly Afterwards tighten with a torque spanner in 4N m as final tightening 11 Align a direction of the pump head and attach it on the diaphragm see P 09 for...

Страница 29: ...ON check the work particularly the area related to the power supply again and start the pump operation Attention Be sure to fully check it 2 Replacement of Piping Replacement of piping may differ acc...

Страница 30: ...isassembly inside inspection of pump head 15 Abnormal bearing 15 Replacement 6 4 16 Miscellaneous Damage of pump internal parts 16 Overhaul replacement of damaged parts 6 4 Pressure failed to drop 1 P...

Страница 31: ...ous operation in the status that absorption gas pressure is high 1 Do not conduct continuous operation in vicinity of atmospheric pressure 2 Absorption gas is high temperature 2 Mount refrigerating ma...

Страница 32: ...ns maintenance and inspection etc d Malfunctions caused by modifications or repairs carried out by a party other than the manufacturer or by a service company not approved by the manufacturer e Malfun...

Страница 33: ...e 1 PP 42 Setscrew 4 SUS 13 Gas ballast nipple 1 PP 43 Pan machine screw 12 SUS 14 Eccentric axis 4 Iron 44 Bolt with hexagon head hole 2 SUS 15 Panel B 1 SUS 45 Pan machine screw 4 SUS 16 Panel A wit...

Страница 34: ...DAU 20 Instruction Manual 21 Exploded view...

Страница 35: ...Industrial Safety and Health Law designates particular substances as the materials to be notified 2 Usage Status Operation Method Approx hours per day years and months Continuous Operation Intermitte...

Страница 36: ...6 6397 2286 ULVAC KIKO Inc https ulvac kiko com en Please contact us for products Service Base or other Inquiries from here ULVAC Inc Components Division 2500 Hagisono Chigasaki Kanagawa 253 8543 Japa...

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