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

The air openings are for ventilation of the motor inside the housing. Keep all air openings free 
of lint, dirt and other foreign objects.

1.14  The PTFE pump is thermally protected and can automatically restart when the protector resets. 

Always disconnect power source before servicing.

1.15  Wear safety glasses or goggles when operating this product.
1.16  Use only in well ventilated areas. The motor is fan cooled enclosed in a shell.
 

   

WARNING

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

explosive gases/vapors

   

WARNING

Never block the exhaust port.  If the exhaust is blocked, pressure will 

build-up in the pump with the potential of the pump head bursting and 

causing possible injury to personnel in the area

1.17  All electrical products generate heat. To avoid serious burns never touch unit during or 

immediately after operation.

1.18  Be sure to properly identify intake and discharge before using pump. See Section II-5.

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: Call (847) 676-8800 

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

outlet only.

1.23  WARNING: To reduce risk of electrocution…
1.24  Do not use this product in or near area where it can fall or be pulled into water or other liquids.
1.25  Do not reach for this product if it has fallen into liquid. Unplug immediately.
1.26  Never operate this product outdoors in the rain or in a wet area.
1.27  DANGER: To reduce risk of  explosion or fi re…
1.28  Do not use this pump near explosive atmospheres or where aerosol (spray) products are being 

used.

1.29  Do not use this product near fl ames.

   

WARNING

Failure to observe the above safety precautions could result in severe 

bodily injury, including death in extreme cases

Summary of Contents for WELCH 2567B-01

Page 1: ...2567B 01 2567B 50 2567C 02 2567C 50 Warning Not recommended for pumping acid base or organic vapors or gases Warning Be sure to properly identify intake and discharge before using pump See section 2...

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: ...discharge provisions 2 20 Electrical power 2 28 Vacuum connections 2 29 Vacuum gauges 2 30 Traps Section 03 Operation 3 10 Starting procedures 3 13 Leak detection 3 14 Pressure range 3 15 Shutdown pro...

Page 4: ...the potential of the pump head bursting and causing possible injury to personnel in the area 1 17 All electrical products generate heat To avoid serious burns never touch unit during or immediately af...

Page 5: ...e contact The pump should be located as closely to its system as possible in order to utilize it most e ciently The pump is rated for indoor use only Maximum altitude 2000 meters Operating temperature...

Page 6: ...2 23 Identi cation Symbols Power O Power On 2 24 Grounding Instructions This product should be grounded In the event of an electrical short circuit grounding reduces the risk of electric shock by prov...

Page 7: ...only used to indicate vacuum level when operating in the rough vacuum range 0 to 29 9 InHg Dial vacuum gauges give negative pressure that is pressure below atmospheric The reference point for the gaug...

Page 8: ...is if you have droplets coming out of the exhaust port If you see droplets of water Welch recommends you use a cold trap to capture the water before entering the pump or dilute the water vapor stream...

Page 9: ...Leak Detection The importance of eliminating all leaks in a vacuum system is obvious The pump must remove this added volume of leaked gas to maintain the desired vacuum Leaks for these pumps can be l...

Page 10: ...n for the condition of the pump is the determination of its maximum vacuum capability This can be accomplished by blocking of the intake and reading the vacuum level on the gauge See Section 2 8 5 11...

Page 11: ...ll Dimensions L in Inches cm 17 0 43 2 W in Inches cm 7 5 19 1 H in Inches cm 12 0 30 5 Shipping Weight lbs Kg 24 10 9 Shipping Dimensions L in Inches 21 5 W in Inches 12 5 H in Inches 16 Catalog Numb...

Page 12: ...12 6 11 Pumping Speed Curves...

Page 13: ...6 12 Dimensional Drawing 244 0 CORD ASSY 8 25 4X 8 32 UNC 2B THRU 7 09 6 67 9 45 INTAKE NIPPLE FOR 3 8 TUBING MUFFLER 11 67 OUTLET INLET 182 6 3 50 5 38 7 19 296 4 240 0 209 5 9 61 180 0 169 4 88 9 13...

Page 14: ...ice Kit Seal Kit Suction Foot Kit 2567K 03 2567K 04 2500K 04 1 2 2567K 01 Connecting Rod Assembly 2 2 2 2567K 02 Valve Plate Ass y 2 3 2 O Ring Cylinder 2 2 4 2 O Ring Valve Plate 2 2 5 1 1412C Exhaus...

Page 15: ...2567C 50 7 21 System Components available as kit Cat No 2565K 50 vacuum regulator with separator jar Qty 2565K 50 Description for regulator separator jar 1 Jar Assembly 1 Needle Valve Miniature 1 Inst...

Page 16: ...other warranties are expressed or implied The method of executing this warranty servicing adjusting repairing or replacing shall be at the discretion of Welch Ilmvac Vacuum pumps that have been opera...

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