WELCH-ILMVAC OWNER’S MANUAL FOR DUOSEAL® VACUUM PUMP MODELS: 1374, 1374B-01, 1374B-10, 1374M-01, 1397, 1397B-01, 1397B-10, 1397B-80, 1397C-03, 1397J-01, 1397M-01, 1397W-01, 3Z657 WARNING Never Block the Exhaust Port If the exhaust is blocked, pressure will build up in the pump with the potential of the oil reservoir bursting and causing possible injury to personnel in the area SAVE THESE INSTRUCTIONS Welch-Ilmvac 5621 W.
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 the 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 processes These units conform to the SI Inernational system of units of meas
TABLE OF CONTENTS Section 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 3.10 Vacuum Problems 3.20 Oil Changes and Oil Level 3.30 Shaft Seal Replacement 3.40 Repairing Oil Leaks 3.50 Repairing Vacuum Leaks 3.60 Drive Problems Section 04 - Trouble Shooting Guide 4.
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. Take time to read these instructions carefully and preserve this manual for future reference; we think it will be useful to you. 1.11 Unpacking Carefully remove the pump from the shipping case and unfasten and remove the wooden skid.
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. Momentary backward rotation of the pump is not harmful. Check the layout drawings for proper direction of rotation.
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. The cold trap, immersed in a suitable Dewar flask, is installed to that the vapors may come in contact with the surfaces of the trap and condense.
2.20 2.21 Operation and System Optimization 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.
2.225 Controlled Ballast Flow Some degree of variation in ballast flow may be obtained by the amount of opening applied tot he gas ballast. Two or more turns of the gas ballast are sufficient to open it wide. With the gas ballast open, the sound of the exhaust is similar to that of a pump operating against a large leak.
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. A simple criterion for the condition of a mechanical pump is a determination of its ultimate pressure capability.
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.
3.40 3.41 Repairing Oil Leaks 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.
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. Carry out a forced oil flush (See Section 3.30) if motor can turn pumping mechanism without excessive noise. If pumping mechanism cannot be turned by motor, have pump sent into factory repair center. 4.
Section 5: QUICK REFERENCE CHARTS Motor Options Wired for 115V, 60Hz, 1Ph Wired for 230V, 60Hz, 1Ph Wired for 230V, 50Hz, 1Ph Wired for 230V, 60Hz, 3Ph Wired for 230V, 50Hz, 3Ph 1374 1397 1374B-01 1397B-01 N/A N/A N/A 1397C-03 1374M-01 1397M-01 N/A N/A Replacement Parts Shaft Seal: Lip Seal Shaft Seal: Mechanical Seal Dust Cap for Exhaust Air Filter Screen Intake Chamber Cover Gasket Oil Case Gasket Drain Plug Oil Window Large Vane Small Vane Large Vane Spring Small Vane Spring Large Vane Spring Holder
Section 6: DIMENSIONAL DRAWING 1374B-01 1397-01 14
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. A comparison of the DuoSeal pumping speed curves shown below, versus high RPM pump speed curves conclusively illustrates the superior performance of the DuoSeal pump.
Section 8: EXPLODED VIEW 16
PARTS LIST ,7(0 47< 3 1
VIEW AND PARTS LIST FOR MODEL 41-1482 ITEM PART NUMBER QTY 1 41-1482 1 OIL CASE, MACHINED FOR 1397 2 41-3753 2 WINDOW, OIL CASE 3 61-2278 1 DRAIN VALVE 2 1 3 18 DESCRIPTION
Section 9: ACCESSORY SECTION Exhaust Filter Filters oil mist from pump exhaust / Easy Replacement Reduces pump noise / Filters to 0.3 micron particle size Standard Exhaust Filter Dimension Diameter Height Filter Use with pump model 1392, 1399, 1400 1376,1380, 1402,1400 1397,1374 2.5 5 5 2.5 6.
Coaxial Traps Reduces oil back streaming / Stainless steel construction / Easy Replacement of Element ISO Size NW16 Capacity Diameter Height A2 to 4 CFM (140 L/min) 3.75 5.25 8.25 Stainless Steel Element for ISO NW 16 Trap 1 Stainless Steel Element for ISO NW 25 and NW 40 Traps1 Cat.No.1 541001 541921 541922 Cat. No.1. Element must be ordered with trap. A2.
MATERIAL SAFETY DATA SHEET FOR: 1407K DUOSEAL VACUUM PUMP OIL HMIS Rating: Health: 0 Flammability: 1 Reactivity: 0 Special: X SECTION 1 - IDENTIFICATION Chemical Name: Highly-Refined Petroleum Lubricant Oils Synonyms: 1407K DUOSEAL Vacuum Pump Oil Formula: N/A Manufacturer’s Name: Gardner Denver Thomas, Inc.
Ingestion: Chronic Health Effects Summary: 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. 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.
SECTION 5 - FIRE FIGHTING MEASURES NFPA Flammability Classification: Flash Point/Method: OSHA/NFPA Class-IIIB combustible liquid. Slightly combustible! 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: Special Properties: Carbon Dioxide, carbon monoxide, smoke fumes, unburned hydrocarbons and trace oxides of Sulfur and/or nitrogen.
SECTION 8 - EXPOSURE CONTROLS AND PERSONAL PROTECTION Engineering Controls: Personal Protective Equipment: Eye Protection: 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 should be selected based upon the conditions under which this material is used.
SECTION 9 – PHYSICAL AND CHEMICAL PROPERTIES Physical State: Odor: pH: Boiling Point/Range: Vapor Pressure: Density: Viscosity Additional Properties: Liquid Color: Mild Petroleum Odor Specific Gravity: N/A Vapor Density: N/A Melting/Freezing Point: 0.01mm of Hg (20°C) Viscosity (cSt @ 40°C): 7.30 Lbs/gal. Solubility in Water: (ASTM D2161) = 339 SUS @ 100°F Volatile Characteristics: Gravity, API (ASTM D287) = 30.0 @ 60°F Light Amber to Amber 0.
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.
CWA: California Proposition 65: 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.
WELCH-ILMVAC Vacuum Pump Repair Facility 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.
