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OWNER'S MANUAL FOR
DUOSEAL® VACUUM PUMP MODEL:
1400B-01 & 3Z654
Manufactured in an
ISO 9000
Registered Environment
WARNING
Never block the Exhaust Port.
If the exhaust port is blocked, pressure will build-up in the pump
with the potential of the pump body bursting and causing
possible injury to personnel in the area.
Gardner Denver Thomas, Inc.
Welch Vacuum Technology
5621 W. Howard Street
Niles, IL 60714
Phone: (847) 676-8800
Fax: (847) 677-8606 Technical Support (847) 588-2366
E-Mail: gdwelchvacuum@gardnerdenver.com
Part No. 67-2065 R1.0
Web-Page: www.welchvacuum.com
Printed in USA
SAVE THESE INSTRUCTIONS

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  • Page 1 If the exhaust port is blocked, pressure will build-up in the pump with the potential of the pump body bursting and causing possible injury to personnel in the area. Gardner Denver Thomas, Inc. Welch Vacuum Technology 5621 W. Howard Street...
  • Page 2: Chart

    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.
  • Page 3: Table Of Contents

    TABLE OF CONTENTS Section Page Section 01 - Installation 1.10 Introduction Section 02 - Operation 2.10 Starting Procedures 2.20 Operation and System Optimization 2.21 High Pressure Operation 2.22 Gas Ballast Principles and Usage 2.23 System Leaks - Impact and Detection 2.30 Shutdown Procedure Section 03 - Maintenance...
  • Page 4: Section 01 - Installation

    Section 1: INSTALLATION 1.10 Introduction This manual has been complied not only for the care and maintenance of the DUOSEAL pump now in your possession but as a helpful reference and guide for many problems which are usually associated with mechanical vacuum pumps.
  • Page 5 1.15 Electrical Power 1.151 Power Source Review Review the power source and the motor rating to be sure they agree in voltage, phase and frequency. On three-phase applications the direction of rotation of the motor must be considered. Make a momentary check rotation at the time of power installation and wiring.
  • Page 6: Section 02 - Operation

    1.17 Traps (See Accessory section in the back of this manual.) 1.171 The need for a Trap Where corrosive vapors or large quantities of condensable vapors are evolved from vacuum processing, a cold trap may be used in the connecting line to the pump. It will help prevent damage to the pump mechanism and reduce oil contamination.
  • Page 7: High Pressure Operation

    2.20 Operation and System Optimization 2.21 High Pressure Operation DUOSEAL two-stage pumps are designed to be most efficient when operated at or near their ultimate blanked off pressure. The pump is designed to remove air from a vacuum system at atmospheric pressure to a deep vacuum. When the pump is operated at elevated pressures up to about 10 Torr for long periods of time, the pump will run hotter.
  • Page 8: System Leaks - Impact And Detection

    2.226 Other Forms of contamination control The application of the gas ballast is a moderate and very successful method for the removal of condensable vapors. For very heavily laden systems, other means of removal such as oil separators may be required. For mild cases of contamination the simple expedient of a cold trap or a change of oil serve the purpose.
  • Page 9: Section 03 - Maintenance

    Section 3: MAINTENANCE 3.10 Vacuum Problems 3.101 Pressure Determinations Leakage, contamination and unusual outgassing are the general causes of problems associated with poor vacuum. To operate at maximum efficiency a system must be thoroughly clean. If the system is completely clean and free from leaks, and unwarranted vacuum problems still exist, the pump should be checked.
  • Page 10: Oil Changes And Oil Level

    3.203 Forced Oil Flushing Procedure 1. Check the oil level, if the oil level is well above the fill mark, (This may indicate either the pump has been overfilled with oil or has ingested a liquid or a large amount of vapor water or organic solvents.) Please go to step 2.
  • Page 11: Repairing Oil Leaks

    3.40 Repairing Oil Leaks 3.41 Location, Cause and Effect Oil leaks may develop wherever two mating faces are sealed with a gasket. Such seams may fail as the result of deterioration of the gasket material, loosening of the screws caused by temperature variations, or improper care as the result of previous reassembly.
  • Page 12: Section 04 - Trouble Shooting Guide

    Section 4: TROUBLE-SHOOTING GUIDE 4.10 Poor Vacuum Readings 1. Disconnect vacuum pump from your vacuum system. 2. Obtain 1 gallon of DUOSEAL oil, 1 gallon or larger clear plastic container, clear drain hose (1/4 inch ID by at least 2.5 feet long), rubber gloves, goggles, apron and pliers. 3.
  • Page 13 Section 5: QUICK REFERENCE CHARTS Motor Options 1400 Specifications Wired for 115V, 60Hz, 1Ph 1400B-01 Free Air Displacement, L/M (CFM) 25 (0.9) Wired for 230V, 60Hz, 1Ph 1400C-01 Gas Ballast Wired for 230V, 50Hz, 1Ph 1400C-02 Ultimate Pressure, Torr (mbar) 1 (1.3)x10-4 Wired for 230V, 60Hz, 3Ph Rotational Pump (RPM)
  • Page 14 Section 6: DIMENSIONAL DRAWING...
  • Page 15: Section 07 - Pumping Speed Curves

    Section 7: PUMPING SPEED CURVES HIGH EFFICIENCY PUMPING CHARACTERISTIC OF DUOSEAL® PUMPS The low RPM design of DuoSeal vacuum pumps makes it possible to maintain high pumping efficiencies into the low micron range. High RPM direct drive vacuum pumps, on the other hand, experience a rapid fall off of pumping speed below 100 microns.
  • Page 16 Section 8: EXPLODED VIEW...
  • Page 17 PARTS LIST ITEM DESCRIPTION ITEM DESCRIPTION 41-1063 SPRING HOLDER FOR VANES 2-00-2704 SCREW PAN HD 10-32 x 1/4” LG. 2-00-2706 SCREW PAN HD 10-32 x 3/8” LG. 41-1069 BAFFLE STUD 2-00-6712 SCREW SOCKET HD 10-32 x 3/4” LG. 41-1138 WASHER 7/16” O/D COPER 2-01-0112 SCREW HEX HD 1/4-20 x 3/4”...
  • Page 18: Oil Case

    VIEW AND PARTS LIST FOR PART NUMBER 61-8540C Parts List for Model 61-8540C Item Qty. Description 2-01-0308 Screw Hex Hd 5/46-18x1/2” 41-1049 Pump Leg 41-3753 Window, Oil Case 61-2278 Drain Valve 61-8540C Oil Case, Machined...
  • Page 19: Section 09 - Accessory Section

    Section 9: ACCESSORY SECTION Exhaust Filter Filters oil mist from Filters to 0.3 micron Easy Replacement Reduces pump noise particle size pump exhaus Standard Exhaust Filter Dimension Catalog Number Diameter Height Filter Replacement Use with pump model Element 1392, 1399, 1400 1417 1417L 1376,1380, 1402,1400...
  • Page 20 Coaxial Traps Reduces oil back streaming Stainless steel construction Easy Replacement of Element ISO Size Capacity Diameter Height Cat.No.1 NW16 to 4 CFM (140 L/min) 3.75 5.25 8.25 541001 Stainless Steel Element for ISO NW 16 Trap 1 541921 Stainless Steel Element for ISO NW 25 and NW 40 Traps1 541922 Cat.
  • Page 21 SECTION 1 - IDENTIFICATION Chemical Name: Highly-Refined Petroleum Lubricant Oils Synonyms: 1407K DUOSEAL Vacuum Pump Oil Formula: Manufacturer’s Name: Gardner Denver Welch Vacuum Technology, Inc. 7301 North Central Ave. Skokie, IL 60077 Date Prepared: November 11, 2003 Telephone Number for General Information:...
  • Page 22 Ingestion: If swallowed, large volumes of material can cause generalized depression, headache, drowsiness, nausea, vomiting and diarrhea. Smaller doses can cause a laxative effect. If aspirated into the lungs, liquid can cause lung damage. Chronic Health Effects Summary: Contains a petroleum-based mineral oil. Prolonged or repeated skin contact can cause mild irritation and inflammation characterized by drying, cracking, (dermatitis) or oil acne.
  • Page 23 SECTION 5 - FIRE FIGHTING MEASURES NFPA Flammability Classification: OSHA/NFPA Class-IIIB combustible liquid. Slightly combustible! Flash Point/Method: CLOSED CUP: 210°C(410°F). (Pensky-Martens (ASTM D-93)) OPEN CUP: 238°(460°F) (Cleveland.). Lower Flammable Limit: No data Upper Flammable Limit: No data Auto-Ignition Temp.: Not available Hazardous Comb ustion Products: Carbon Dioxide, carbon monoxide, smoke fumes, unburned hydrocarbons and trace...
  • Page 24 SECTION 8 - EXPOSURE CONTROLS AND PERSONAL PROTECTION Engineering Controls: Provide exhaust ventilation or other engineering controls to keep the airborne concentrations of mists and/or vapors below the recommended exposure limits (see below). An eye wash station and safety shower should be located near the work-station. Personal Protective Equipment: Personal protective equipment should be selected based upon the conditions under which...
  • Page 25 SECTION 9 – PHYSICAL AND CHEMICAL PROPERTIES Physical State: Liquid Color: Light Amber to Amber Odor: Mild Petroleum Odor Specific Gravity: 0.88(Water = 1) Vapor Density: GT 1 (Air = 1) Boiling Point/Range: Melting/Freezing Point: N/A Vapor Pressure: Viscosity (cSt @ 40°C): 65 0.01mm of Hg (20°C) Density: Solubility in Water:...
  • Page 26 SECTION 13 – DISPOSAL CONSIDERATIONS Hazard characteristic and regulatory waste stream classification can charge product use. Accordingly, it is the responsibility of the user to determine the proper storage, transportation, treatment and/or disposal methodologies for spent materials and residues at the time of disposition. Conditions of use may cause this material to become a hazardous waste, as defined by Federal or State regulations.
  • Page 27 CWA: This material is classified as an oil under Section 311 of the Clean Air Act (CWA) and the Oil Pollution Act of 1990 (OPA). Discharges or spills which produce a visible sheen on waters of the United States, their adjoining shorelines, or into conduits leading to surface waters must be reported to the EPA’s National Response Center at (800) 424-8802.
  • Page 28 Welch. This document is to be returned to Welch upon request and in all events upon completion of the purpose for which it is loaned. Copyright© 2008 Gardner Denver Thomas, Inc. Welch Vacuum Technology Welch is a registered trademark of Gardner Denver Thomas, Inc.

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