WELCH-ILMVAC 2019B Owner'S Manual Download Page 4

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Section 1: SAFETY INFORMATION

1.10  Caution: To Prevent Injury...
1.11  Never operate this product if it has a damaged cord or plug. If it is not working properly, has 

been dropped, damaged or has fallen into water, please return the product to a Welch service 
center for examination and repair.

1.12  Keep the cord away from heated surfaces. All electrical products generate heat. To avoid 

serious burns never touch unit during or immediately after operation.

1.13  Never block any air openings or place it on a soft surface where the openings may be blocked. 

To ensure proper ventilation, keep unit a minimum of one inch from any wall or obstruction. 
The air openings are for ventilation of the motor inside the housing. 

1.14  Model 2019 is thermally protected and can automatically restart when the protector resets. 

Always disconnect power source before servicing.

1.15  Never drop or insert fi ngers or any other object into any openings.

1.16  Do not operate this product where oxygen is being administered.

1.17  Wear safety glasses and goggles when operating this product.

1.18  Use only in well ventilated areas. The motor on all pumps are totally enclosed fan cooled

 

WARNING

Do not operate the pumps in an atmosphere containing fl ammable or 

explosive gases/vapors

1.19  Be sure to properly identify intake and discharge before using pump. Models 2019 has one 

exhaust port on the pump. See Section 3.15.

 

WARNING

Remove plug from Exhaust Port before using

1.20  Caution: To Reduce Risk Of Electrical Shock...
1.21  Do not disassemble. Disassembly or attempted repairs if accomplished incorrectly can create 

electrical shock hazard. Refer servicing to qualifi ed service agencies only.

1.22  Unit is supplied with a three pronged plug. Be sure to connect pump to a properly grounded 

outlet only.

Summary of Contents for 2019B

Page 1: ...ng the pump See Section 3 15 CAUTION Do not pump liquids with the pump Pumping liquids will cause the pump to stop working Part No 642913 Printed in USA WELCH ILMVAC Welch Ilmvac 5621 W Howard Street...

Page 2: ...ons are found where failure to observe the instruction could result in damage to the equipment associated equipment and process These units conform to the SI International system of units of measureme...

Page 3: ...ump location 6 3 15 Discharge provisions 7 3 16 Electrical power 7 3 17 Traps 8 3 18 When to Use a liquid Trap 8 3 19 When to Use a cold Trap 8 3 20 The care of a liquid trap 8 3 21 The care of a cold...

Page 4: ...en the protector resets Always disconnect power source before servicing 1 15 Never drop or insert ngers or any other object into any openings 1 16 Do not operate this product where oxygen is being adm...

Page 5: ...re 1 41 Do not use this pump in or near explosive atmospheres or where aerosol spray products are being used 1 42 Do not use this product near ames WARNING Failure to observe the above safety precauti...

Page 6: ...ervice Support on www welchvacuum com 3 13 Pump Mounting Rubber feet are attached to the pump casing 3 14 Pump Location WARNING Don t operate this pump in an atmosphere containing ammable or explosive...

Page 7: ...Intake Hose barb tting 1 4 NPT x 3 8 ID hose 3 16 Electrical Power 3 16 1 Power Source Review Review the power source and the motor rating to be sure they agree in voltage phase and frequency Serious...

Page 8: ...he cold trap will come in contact with the surfaces of the trap and condense Commonly used refrigerants are liquid nitrogen or dry ice with alcohol slurry Dry ice provides suf cient cooling to freeze...

Page 9: ...he system and painting the suspected area with a thick soap solution Escaping air will produce soap bubbles 4 13 Operating Pressure Range Vacuum pumps are designed to be run from slightly below atmosp...

Page 10: ...emove head set head with screws aside for assembly 5 Remove four screws 2 from valve plate Remove valve plate and set aside for reassembly 6 Remove diaphragm liner and discard Reassembling the diaphra...

Page 11: ...n with each rotation of the fan If you don t feel suction or if you feel or hear a thump as you turn the fan DO NOT CONNECT THE UNIT TO A POWER SOURCE review the assembly procedure for possible error...

Page 12: ...Description 2019K 01 2019K 03 2500K 04 1 Diaphragm Buna N 1 1 2 Diaphragm liner PTFE 1 1 3 Diaphragm Hold Down Plate 1 4 Valve Plate Assembly 5 O Ring Gasket Head 1 6 Pump Head Assembly Includes item...

Page 13: ...d however short will be repaired under this warranty rather than replaced The warranty is effective for one year from the date of original purchase when 1 The warranty card has been completed and retu...

Page 14: ...L 60714 Phone 847 676 8800 Technical Support Fax 847 677 8606 E Mail gdwelchvacuum gardnerdenver com Web Page www welchvacuum com Copyright 1997 2007 Gardner Denver Welch Vacuum Technology Inc Welch i...

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