WELCH 2014 Dryfast Ultra Diaphragm Pump Owner’s Manual

WELCH 2014 Dryfast Ultra Diaphragm Pump

Product Information

• Specifications
  • Models: 2014 / 2032 / 2042 / 2034 / 2044 / 2037 / 2047
  • The Dry Vacuum Pumps from Welch-Ilmvac are designed for various applications that require vacuum pressure.
  • These pumps are suitable for creating vacuum environments in laboratories, industrial settings, and other applications.

Product Usage Instructions

• Safety Information
  • Caution: To Prevent Injury…
  • Never operate the product if it has a damaged cord or plug. Return it to a Welch service centre for examination and repair.
  • Keep the cord away from heated surfaces to avoid burns. Do not touch the unit during or immediately after the operation.
  • Ensure proper ventilation by not blocking air openings. Maintain a minimum of one-inch distance from walls or obstructions.
• Installation
  • Follow the environmental conditions specified in the manual.
  • Unpack the pump carefully and mount it securely in a suitable location with proper discharge provisions.
  • Connect the pump to the appropriate electrical power source as per the guidelines provided.
• Operation
  • Start the Welch Dry Vacuum Pump following the recommended procedure outlined in Section 3.10 of the manual.
  • Maintain cleanliness around the pump and perform leak detection regularly.
  • Operate the pump within the specified pressure range and be cautious of unwanted vapours.
• Maintenance
  • Perform general maintenance tasks as described in Section 4.10 of the manual.
  • When required, remove and install a new diaphragm following the instructions provided.
• Application
  • Utilize the Dry Vacuum Pump as a replacement for aspirators in various applications as detailed in Section 5.10 of the manual.

FAQs

• Q: Can I pump liquids with the Dry Vacuum Pump?
  • A: No, pumping liquids will cause the pump to stop working. Do not pump liquids with this pump.
• Q: What should I do if the pump restarts without actuation under a fault condition?
  • A: Refer to the warning in the manual regarding the self-resetting thermal cutout in the motor. Contact technical support for assistance if needed.

SAFETY INFORMATION

• Caution: To Prevent Injury…
• 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 the water, please return the product to a Welch service centre for examination and repair.
• Keep the cord away from heated surfaces. All electrical products generate heat. To avoid serious burns never touch the unit during or immediately after the operation.
• Never block any air openings or place it on a soft surface where the openings may be blocked.
• To ensure proper ventilation, keep the unit a minimum of one inch from any wall or obstruction.
• The air openings are for ventilation of the motor inside the housing.
• Models 2014, 2032, 2034, 2037, 2042, 2044 and 2047 are thermally protected and can automatically restart when the protector resets. Always disconnect the power source before servicing.
• Never drop or insert fingers or any other object into any openings.
• Do not operate this product where oxygen is being administered.
• Wear safety glasses and goggles when operating this product.
• Use only in well-ventilated areas. The motor on all pumps is enclosed fan-cooled
• WARNING: Do not operate the pumps in an atmosphere containing flammable or explosive gases/vapours
• Be sure to properly identify intake and discharge before using a pump. See Section 2.5.
• Models 2014, 2032, 2034, 2037, 2042, 2044 and 2047 have one exhaust port on the pump. See Section 2.15.
• WARNING: Remove the plug from the Exhaust Port before using.
• Caution: To Reduce Risk Of Electrical Shock…
• Do not disassemble. Disassembly or attempted repairs if accomplished incorrectly can create electrical shock hazards. Refer servicing to qualified service agencies only.
• The unit is supplied with a three-pronged plug. Be sure to connect the pump to a properly grounded outlet only.
• Warning: To Reduce Risk of Electrocution…
• Do not use this product in or near areas where it can fall or be pulled into water or other liquids.
• Do not reach for this product if it has fallen into liquid. Unplug immediately.
• Never operate this product outdoors in the rain or a wet area.
• Danger: To Reduce Risk of Explosion or Fire…
• Do not use this pump in or near explosive atmospheres or where aerosol (spray) products are being used.
• Do not use this product near flames.
• WARNING: Failure to observe the above safety precautions could result in Severe bodily injury, including death in some cases.

INSTALLATION

• Environmental Conditions
  • The Pump is rated for indoor use only. Maximum altitude 2000 meters.
  • Operating temperature ranges from 10OC to 40OC. Maximum relative humidity of 80% for temperatures up to 31OC decreasing to 50% at 40oC.
  • Rated for +/-10% of supply voltage. Pollution Degree 2, Installation Category II.
• Introduction
  • This manual has been compiled not only for the care and maintenance of the Dryfast Vacuum pump now in your possession but also as a helpful reference and guide to prevent many problems that can occur if used improperly.
• Unpacking
  • Carefully remove the Dryfast Vacuum pump from the shipping case.
  • Preserve all paperwork for future reference. If damage has occurred from shipment a claim must be filed with the carrier immediately; preserve the shipping carton for inspection by the carrier.
  • If you are required to communicate with your dealer or Welch Vacuum be sure to include your order numbers for quick identification. Do not return the pump to the factory without obtaining returned goods authorization.
  • See “Service & Support” on www.welchvacuum.com.
• Pump Mounting
  • Rubber feet are attached to the pump casing.
• Pump Location
  • WARNING: Don’t operate this pump in an atmosphere containing flammable or explosive gas
  • WARNING: The motor is thermally protected and will automatically restart unexpectedly when the overload device resets
  • The Dryfast Vacuum pump should be located preferably in a clean, dry and well-ventilated area.
  • Please be sure not to block the ventilation ports located on the motor housing.
  • The pump should be placed where the surrounding temperature remains between 10OC and 40OC (50OF and 104OF). Always check to ensure the location chosen is protected from direct or indirect moisture contact.
  • The pump should be located as close to its system to utilize it most efficiently.

Discharge Provisions

• Dryfast Vacuum Pump Models 2014, 2032, 2034, 2037, 2042 2044 and 2047 come with two hose barbs, one Intake and one Exhaust. All hose barbs and mufflers are supplied loose with the pump.
• The hose barb used on all models accepts a 3/8” I.D. hose. By threading the hose barb in the exhaust port of the pump, a vent line can be attached which allows gases and vapours pumped through the pump to be piped from the work area into a hood.
• Vent lines will muffle noise coming from the vacuum pump.
• WARNING: Never block the discharge port. If the exhaust is blocked, pressure will build up in the pump which can lead to the pump head bursting creating the potential for serious injury. Remove the plug from the exhaust port
• WARNING: Remove plug from exhaust port before operating
• Properly identify the intake and exhaust of the pump
• Electrical Power

Power Source Review

• Review the power source and the motor rating to be sure they agree in voltage, phase and frequency.
• Serious damage may occur to the motor if it is connected to an improper voltage.
• All Welch pumps must be grounded. Grounding reduces the risk of electric shock in the event of an electrical short circuit.
• The plug must be plugged into an outlet properly grounded. Consult your local electrical codes if you have doubts.
  • Identification Symbols: Power Off
• Advanced Vapor Management (AVM)
• Advanced Vapor Management (AVM) is provided for the precise setting of the vacuum level.
  • Clockwise revolution increases the vacuum level
  • Counter- Clockwise revolution decreases the vacuum level

Traps When to Use a Trap

• The use of PTFE or fluorinated plastics for all wetted parts resists chemical attack allowing the pump to handle aggressive solvent, base and acid vapors. An oil-free diaphragm mechanism removes the need for a lubricating and sealing fluid for pulling a vacuum. When pumping gases or low vapour loads, a trap is not necessary unless you want to capture vapours evolved from the process.
• When a heavy load of water or organic vapour is evolved from the vacuum process, condensation of vapour in the pump mechanism may occur. The reason is the pump is compressing the vapour as it passes through the pump. If the vapour is dense enough, the compression will cause condensation of the vapour in the pump mechanism. The valve system in the pump mechanism is designed to pass the small quantity of liquified vapour formed when pumping heavy vapour loads. The liquid formed will be ejected from the exhaust port.
• See Section 5 on pump maintenance for suggestions for purging the vacuum pump of condensed liquids before shutting it off.
• The ejected liquid from the exhaust port can either be collected in a liquid trap attached to the exhaust port or the vapour trapped in a cold trap placed in line between the pump and the vacuum chamber. A simple, inexpensive liquid trap can be made from a filtering flask. The filtering
• flask is connected by a 3/8” ID hose to the exhaust port by using the loose hose barb provided.
• The use of a cold trap when pumping heavy vapour loads will eliminate the need for a liquid trap attached to the exhaust port.
• The cold trap is installed between the pump and the vacuum chamber. The water or organic vapors evolved from the vacuum process will upon entering the cold trap 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 sufficient cooling to freeze out most heavy water vapour loads.
• A variety of cold traps are available from Welch. Please call our customer service department. For additional information at 847-676-8800.

The Care of a Liquid Trap

• A liquid trap needs no refrigerant. The key maintenance issue when pumping high vapour loads is to regularly drain the trap of liquid ejected from the dry vacuum pump.

The Care of a Cold Trap

• When using a cold trap the refrigerant should be maintained at a high level in the flask to keep the trap at a uniformly low temperature. If the trap is rewarmed it may allow re-evaporation of the condensate.
• The refrigerant add tube on the liquid nitrogen trap should not be obstructed as the refrigerant boil-off can produce dangerously high pressures. If the trap becomes saturated it should be disconnected from the system, drained and cleaned.
• An increase in pressure in the vacuum system will normally indicate that the trap has become saturated.
• To clean the trap, remove the trap from the system allow the trap to warm up and rinse off the condensate with a suitable solvent in a fume hood. Thoroughly clean and dry the trap before reinstalling into the system.
• If a liquid nitrogen trap is used, the refrigerant add tube on the liquid nitrogen trap should not be obstructed as the refrigerant boil-off can produce dangerously high pressures.

OPERATION

Starting a Welch Dry Vacuum Pump

• Before attaching the pump to a system it is well to familiarize yourself with the function and action of the pressure vacuum pump that you have acquired. Review the power requirements as described in Section 2.6.
• Welch recommends running the pump for a few minutes to warm it up before use.
• The warm-up improves the pump’s ability to pass water and organic vapour. A warm pump will handle more vapour without liquefying it than a cold pump.

Cleanliness

• Take every precaution to prevent foreign particulates or liquid from entering the pump. Particulates will damage the pump’s performance.
• If you find that particulates or liquid will come off during the process of evacuation, a simple liquid trap can be made out of readily available material to protect the pump.
• The trap would consist of a filtering flask placed between the pump and the vacuum chamber.

Leak Detection

• Eliminating all leaks in a vacuum system is a key to obtaining maximum vacuum. The pump must remove this added volume of leaked gas to maintain the desired vacuum.
• Leaks can be located by slightly pressuring the system and painting the suspected area with a thick soap solution. Escaping air will produce soap bubbles.

Operating Pressure Range

• Vacuum pumps are designed to be run from slightly below atmospheric to their maximum vacuum level on the intake side. Consult the Specification Table in the back of this manual for the ratings for your model.

The Effects of Unwanted Vapor

• Systems that contain undesirable vapours cause difficulty both from the standpoint of attaining desirable ultimate pressures. A vapor is defined as the gaseous form of any substance which is usually a liquid or a solid.
• Water, oil, and mercury vapours are three of the more common vapours encountered in typical vacuum systems.
• When such vapours exist in a system, the vapours or mixtures of gas and vapours are subject to condensation within the pump; the precipitated liquid may thus ultimately solidify on the PTFE heads and diaphragm causing corrosion.

Shutdown Procedures

• After use, Welch recommends the pump be run for about 2 minutes disconnected from the vacuum process. The air pumped through the mechanism will purge out water vapour or droplets of condensate that may have formed on the inside of the pump.
• This purge of the pump mechanism helps prevent the build-up of solute crystals inside of the pump head. Over time, these crystals will shorten the pump’s lifetime.

MAINTENANCE

General Maintenance

• Dryfast Vacuum units are 100% oil-free.
• The pump employs a diaphragm with an uninterrupted PTFE coating. All bearings are sealed and permanently lubricated. Lubrication should not be attempted.
• The units are built for duty operation just like a water aspirator but with the quietness, performance and durability of a diaphragm.

Diaphragm Removal

WARNING: Do not remove the diaphragm unless you are wearing hand protection. The steel disc inside the diaphragm may cause injury.

1. Remove the four 5M x 65 screws and washers from the cover plate. Remove the cover plate and head from the plastic head base.
2. Make sure to wear gloves before removing the diaphragm. Grab the diaphragm with both hands and turn counterclockwise to loosen from the connecting rod.
3. Remove the diaphragm retaining shims.

Installation of New Diaphragm

1. Apply a small amount of Loctite to the threaded diaphragm stud and fasten it to the connecting rod with shims previously removed.
2. Tighten the diaphragm with both hands. Tighten the eccentric set screw down onto the flat of the motor shaft.
3. Place the head and chamber assembly on top, rotate the fan so that the peripheral lip of the diaphragm aligns with the groove on the underside of the chamber and base plate.
4. Place the cover plate over the head and body using four 5M x 65 screws and washers.
5. Tighten the screws (see exploded view torque spec.) do not over-tighten or the PTFE head material will deform.

APPLICATION

Operation as a Replacement for Aspirators

• Models 2014, 2032, 2034, 2037, 2042, 2044 and 2047 are ideal for replacing common water aspirators used for vacuum distillation/extraction filtration, degassing, low-pressure source and/ or gas transfer.
• The six basic models are available with free air displacements from 25 to 70 L/ min and vacuum to 29.85 inches of Hg.
• Water aspirators have been the researchers’ traditional source of rough vacuum to 28.5” Hg (36 Torr) and pumping speed up to 20 L/min.
• Compare the pump-down curves for Models 2037 and 2047 to a standard water aspirator. See the table below to cross-reference the correct Welch Dry Vacuum pump with your water aspirator.

Cross Reference Welch Dry Vacuum Pump with your Water Aspirator

Style of Aspirator Pump| Water Flow (gal/min)| Water Pressure 1 (PSIG)| Matching Welch Dryfast Pump Catalog Number| Welch Pump Replaces up to:
---|---|---|---|---
Plastic|  |  | 2014, 2032, 2042, 2034, 2044| 2 Aspirators
or| 2| 30| 2037| 3 Aspirators
Metal|  |  | 2047| 4 Aspirators

SPECIFICATION

Specification Table

Welch Model| |
---|---|---
2032| 2042| 2034| 2044| 2037| 2047
Free air Displacement CFM (L/min) @ 60Hz CFM (L/min) @ 50Hz| 0.9 (25)

0.75 (21)

| 1.2 (35)

1.0 (29)

| 0.9 (25)

0.75 (21)

| 1.2 (35)

1.0 (29)

| 1.8 (50)

1.5 (42)

| 2.5 (70)

2.1 (58)

Maximum Vacuum – in. Hg| 29.85| 29.85| 29.6| 29.6| 28.5| 28.5
Ultimate Pressure – Torr (mbar)| 2 (3)| 2 (3)| 9 (12)| 9 (12)| 35 (47)| 35 (47)
Maximum Continous Pressure PSIG (Pascal)| 0| 0| 0| 0| 0| 0
Tubing needed, I.D., inches| 3/8| 3/8| 3/8| 3/8| 3/8| 3/8
Weight – lbs (kg)| 21 (9.6)| 21 (9.6)| 21 (9.6)| 21 (9.6)| 21 (9.6)| 21 (9.6)
Catalog Number

Wired for 115V, 60Hz, 1 Phase with North American 115V Plug

| 2032B-01| 2042B-01| 2034B-01| 2044B-01| 2037B-01| 2047B-01
Catalog Number

Wired for 230V, 50Hz, 1 Phase with European Schuko Plug

| 2032C-02| 2042C-02| 2034C-02| 2044C-02| 2037C-02| 2047C-02
Catalog Number

Wired for 100V, 50/60Hz, 1 Phase with North American 115V Plug

| 2032C-05| 2042C-05| 2034C-05| 2044C-05| 2037C-05| 2047C-05
Motor H.P.| 1/5| 1/5| 1/5| 1/5| 1/5| 1/5
Motor Voltage 50/60Hz

60Hz

50/60Hz

| 230V

115V

100V

| 230V

115V

100V

| 230V

115V

100V

| 230V

115V

100V

| 230V

115V

100V

| 230V

115V

100V

Motor Amps

230V 50Hz      (N.L. – F.L.)

115V 60Hz      (N.L. – F.L.)

100V 50/60Hz (N.L. – F.L.)

| 0.4 – 0.6

0.9 – 1.6

0.7-1.3 / 0.8-1.4

| 0.4 – 0.6

0.9 – 1.6

0.7-1.3 / 0.8-1.4

| 0.4 – 0.6

0.9 – 1.6

0.7-1.3 / 0.8-1.4

| 0.4 – 0.6

0.9 – 1.6

0.7-1.3 / 0.8-1.4

| 0.4 – 0.6

0.9 – 1.6

0.7-1.3 / 0.8-1.4

| 0.4 – 0.6

0.9 – 1.6

0.7-1.3 / 0.8-1.4

WARRANTY

UNPACKING

• Inspect the pump carefully. If any damage has occurred, file a claim with the carrier immediately. Save the shipping container for the carrier to inspect.

OPERATING PUMP

• Refer to the enclosed Instruction/Operation Manual for all information to properly operate and maintain the pump.

WARRANTY

• This Welch Vacuum product is warranted to be free from defects in material and workmanship.
• The liability of Welch-Ilmvac under this warranty is limited to servicing, adjusting, repairing or replacing any unit or part which in the judgment of Welch-Ilmvac has not been misused, abused or altered in any way causing impaired performance or rendering it inoperative.
• No 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 used for any period, 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 returned.
2. The product is returned to the factory or other designated service centres, freight prepaid.
3. The product in our judgment is defective through no action or fault of the user.
   • If the product has become defective through misuse, abuse, or alteration, repairs will be billed regardless of the age of the product. In this event, an estimate of the repair costs will be submitted and authorization of these charges will be required before the product is repaired and returned.
   • To obtain a return authorization number, please fill in the online request form at www.welchvacuum.com.
   • Products without a return authorization number will be refused by our receiving department.
   • Before shipping, properly pack the pump, insure it against loss or damage, and on the outside of the pump packaging and the packing slip write in the return authorization number.
   • Pumps damaged due to improper packaging are the customer’s responsibility.

DRAWINGS

Dimensional Drawing

Exploded View and Kit for Models 2034, 2037 & 2044

Repair Kit 2037K-01, This kit is a Head Service Kit

Exploded View and Kit for Model’s 2014, 2032, 2042 & 2047

• WARNING: Be sure to properly identify intake and exhaust before using the pump. See Section 2.15
• CAUTION: Do not pump liquids with the pump. Pumping liquids will cause the pump to stop working

INSTRUCTIONS WARNINGS AND CAUTIONS PLEASE READ BEFORE OPERATION

• While reading your manual, please pay close attention to areas labelled: WARNING AND CAUTION. The description of each is found below.
• WARNING Warnings are given where failure to observe instruction could result in injury or death to people
• CAUTION Cautions 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 measurement.
• The following symbols (with the recommendation of IEC1010 ) of warning will be found on the pump.
• Caution – Refer to accompanying documents
• Caution – Risk of electrical shock
• Caution – Hot surface
• WARNING Motor includes a self-resetting thermal cutout and the pump could restart without actuation under fault condition

CONTACT

• Welch-Ilmvac
• 5621 W. Howard Street
• Niles, IL 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 is a registered trademark of Gardner Denver
• Welch-Ilmvac
• 5621 W. Howard Street
• Niles, IL 60714
• Phone: 847-676-8800 (Technical Support)
• Fax: 847-677-8606
• E-Mail: gdwelchvacuum@gardnerdenver.com.
• Web Page: www.welchvacuum.com.
• Part No. 642779
• Printed in USA

References

• welchvacuum.com

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