Owner Manual for: WOB-L Model 2511

The Welch WOB-L Model 2511 is a compact, oil-free vacuum pump designed for laboratory and industrial use. If you're troubleshooting inconsistent vacuum levels, planning preventive maintenance, or onboarding new lab equipment, this manual gives you the technical clarity to act fast and avoid downtime.

The manual covers:

• Specifications: Flow rate, ultimate vacuum, motor type, and dimensions.
• Installation Instructions: Electrical setup, mounting, and tubing guidance.
• Operation Guidelines: Start-up procedures, safety checks, and usage tips.
• Maintenance Schedule: Filter changes, diaphragm inspection, and cleaning intervals.
• Troubleshooting: Common issues like reduced vacuum, noise, or overheating.