Full Manual
Get the official Welch Vacuum manual for the DuoSeal Belt Drive Model 1402.
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Stop Belt Failures Before They Start
If you're running a DuoSeal 1402 belt-drive vacuum pump, you're likely dealing with long operating hours, sensitive lab environments, or industrial setups where downtime is expensive. The most common pain point? Belt wear and misalignment. This manual gives you the specs, maintenance schedules, and troubleshooting steps to keep your pump running without interruption.
The DuoSeal 1402 is a two-stage, oil-sealed rotary vane pump designed for deep vacuum applications. Its belt-driven design isolates the motor from the pumping mechanism, reducing vibration and extending service life. But only if it's maintained correctly.
What You’ll Find Inside
- Specifications: Pumping speed, ultimate pressure, oil capacity, motor ratings, and dimensions.
- Installation Guidelines: Proper mounting, electrical setup, and oil filling procedures.
- Operation Instructions: Startup, shutdown, and routine use tips.
- Maintenance Schedule: Belt tensioning, oil changes, and cleaning intervals.
- Troubleshooting: Common issues like low vacuum, overheating, and noise—with fixes.
- Parts List & Diagrams: Exploded views and part numbers for ordering replacements.
FAQs
It achieves an ultimate pressure of 1 x 10⁻⁴ Torr, suitable for most lab and industrial vacuum applications.