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Belt Driven PumpsDuoSeal 1374DuoSeal 1376DuoSeal 1380DuoSeal 1397DuoSeal 1399DuoSeal 1400DuoSeal 1402DuoSeal 1405DuoSeal 1400W-01DuoSeal 1402W-01DuoSeal 1405W-01ChemStar 1400N-90ChemStar 1402N-90ChemStar 1376NChemStar 1400NChemStar 1402NCapture CRRBelt Kit 1397ABelt Kit 1399ABelt Kit 1400ABelt Kit 1405AMajor Repair Kit 1373K-06Major Repair Kit 1376K-06Major Repair Kit 1376K-10Major Repair Kit 1380K-04Major Repair Kit 1397K-08Major Repair Kit 1399K-04Major Repair Kit 1400K-04Major Repair Kit 1400K-10Major Repair Kit 1402K-06Major Repair Kit 1402K-10Major Repair Kit 1402K-47Minor Repair Kit 1373K-05Minor Repair Kit 1376K-05Minor Repair Kit 1376K-09Minor Repair Kit 1376K-46Minor Repair Kit 1397K-07Minor Repair Kit 1380K-03Minor Repair Kit 1399K-03Minor Repair Kit 1400K-03Minor Repair Kit 1400K-09Minor Repair Kit 1402K-05Minor Repair Kit 1402K-09Minor Repair Kit 1402K-46Seal Kit 1401EDuoSeal Oil
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If you're running continuous-duty vacuum operations in labs or industrial settings, the Welch DuoSeal Belt Drive Model 1376 is built to last for years of heavy use. This pump is known for its long service life, low maintenance needs, and stable vacuum performance. The linked manual provides detailed guidance on installation, operation, and servicing—critical for keeping your system running efficiently and avoiding downtime.

Product Manual

Access the full manual for the DuoSeal Belt Drive Model 1376 here.
DuoSeal Belt Drive Model 1376

What You’ll Learn from the Manual

  • Installation Requirements

Includes space planning, mounting instructions, and electrical setup. The pump must be installed on a level surface with proper ventilation. Belt tension and alignment are key to performance.

  • Operating Procedures

Covers startup, shutdown, and routine operation. The manual outlines oil level checks, vacuum gauge readings, and how to avoid common misuse that shortens pump life.

  • Maintenance Schedule

Details oil change intervals, belt inspection, and cleaning routines. Welch recommends using their vacuum pump oil for optimal performance.

  • Troubleshooting Guide

Step-by-step diagnostics for issues like low vacuum, excessive noise, or overheating. Includes diagrams and part references.

  • Parts and Service

Explains how to identify part numbers and order replacements. Also includes exploded views for disassembly and reassembly.

FAQs

It delivers deep vacuum levels suitable for distillation, degassing, and filtration. Typical ultimate pressure is in the micron range.