WELCH-ILMVAC
OWNER’S MANUAL FOR
WOB•L® PISTON PRESSURE/VACUUM PUMPS MODELS:
2522C-05, 2534C-01, 2534C-02, 2546B-01, 2546C-01, 2546C-02, & 2546C-10
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 2.50
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
For outside of U.S. and Canada, contact your local Gardner Denver sales office.
Printed in USA
Part No. 642517G
INSTRUCTION
WARNING AND CAUTION
PLEASE READ BEFORE OPERATION
While reading your manual, please pay close attention to areas labeled:
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 confirm to the (SI) International system of units of measurement.
The following symbols (with recommendation of IEC61010) 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.
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TABLE OF CONTENTS
Section 01 - Safety Information
1.10Warning to prevent injury
1.20Warning to reduce risk of electrical shock
1.30Warning to reduce risk of electrocution
1.40Warning to reduce risk of explosion or fire
Section 02 - Installation
2.10Introduction
2.20Unpacking
2.30Pump mounting
2.40Pump location
2.50Intake and discharge provisions
2.60Vacuum connections
2.70Vacuum and pressure gauges
Section 03 - Electrical Power
3.10Power source review
3.20Overload protection
Section 04 - Traps
4.10The need of a trap
4.20The care of a trap
Section 05 - Operation
5.10Starting a welch pressure/vacuum pump
5.20Cleanliness
5.30Leak detection
5.40Operating pressure range
5.50Shutdown procedures
Section 06 - Maintenance
6.10Maintenance on a welch pressure/vacuum pump
Section 07 - Troubleshooting
7.10Vacuum problems
7.20Pressure problems
7.30Troubleshooting guide
Section 08 - Specifications
8.10Specification table
Section 09 - Warranty
Section 10 - Exploded views and parts list
10.10 Exploded views and parts list for model’s 2546B-01, 2546C-01, 2546C-02, 2546C-10 10.20 Exploded views and parts list for model’s 2522C-05, 2534C-01, 2534C-02
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Section 1: SAFETY INFORMATION
1.10WARNING: TO PREVENT INJURY...
1.11Never 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.
1.12Keep the cord away from heated surfaces. All electrical products generate heat. To avoid serious burns never touch unit during or immediately after operation.
1.13Never 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.
1.14Never drop or insert fingers or any other object into any openings.
1.15Do not operate this product where oxygen is being administered.
1.16This pump is thermally protected and can automatically restart when the protector resets.
Always disconnect power source before servicing.
1.17Wear safety glasses and goggles when operating this product. Never point any air nozzle or air sprayer toward another person or any part of the body.
1.18Use only in well ventilated areas. The motor on all pumps are totally enclosed fan cooled
1.19Do not use any tools or attachments without first determining maximum air pressure for that tool or attachment. Be sure to properly identify intake and discharge before using pump.
See Section 2.50
1.20WARNING: TO REDUCE RISK OF ELECTRICAL SHOCK…
1.21Do not disassemble. Disassembly or attempted repairs if accomplished incorrectly can create electrical shock hazard. Refer servicing to qualified service agencies only.
1.22Unit is supplied with a three pronged plug. Be sure to connect pump to a properly grounded outlet only.
1.30WARNING: TO REDUCE RISK OF ELECTROCUTION…
1.31Do not use this product in or near area where it can fall or be pulled into water or other liquids.
1.32Do not reach for this product if it has fallen into liquid.
1.33Never operate this product outdoors in the rain or in a wet area.
1.40WARNING: TO REDUCE RISK OF EXPLOSION OR FIRE…
1.41Do not use this pump in or near explosive atmospheres or where aerosol (spray) products are being used.
1.42Do not pump anything other than atmospheric air.
1.43Do not pump combustible liquids or vapors with this product or use in or near an area where
flammable or explosive liquids or vapors may exist.
1.44Do not use this product near flames.
WARNING
Failure to observe the above safety precautions could result in severe bodily injury, including death in extreme cases.
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Section 2: INSTALLATION
2.10INTRODUCTION
2.11This manual has been compiled not only for the care and maintenance of the Welch Dry Dual
Function Pressure/Vacuum pump now in your possession, but as a helpful reference and guide to prevent many problems which can occur if used improperly.
2.20UNPACKING
2.21Carefully remove the Pressure/Vacuum pump from the shipping case and unfasten and remove the wooden skid. 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 first calling for a returned goods number.
2.30PUMP MOUNTING
2.31Rubber feet are attached to the pump. Rubber feet are excellent for applications involving a semi-flexible surface such as a bench top; they help to isolate noise and eliminate creeping.
2.40PUMP LOCATION
2.41The pressure/vacuum pump should be located preferably in a clean, dry, and well ventilated area. Please be sure not to block the ventilation holes located on the motor housing. The pump should be placed where the surrounding temperature remains between 10°C and 40°C (50°F and 104°F). Always check to insure the location chosen is protected from direct or indirect moisture contact. Welch recommends that the pump be installed at the highest point within the system to prevent possible water condensate from entering the pump. The pump should be located as closely to its system in order to utilize it most efficiently.
WARNING
The motor is thermally protected and will automatically restart unexpectedly when the overload device resets. Don’t pump flammable or explosive gases or vapors or operate this pump in an atmosphere containing flammable or explosive gases or vapors.
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