Table of Contents
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Never Block the Exhaust Port. If the exhaust 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.
Welch Rietschle Thomas
7301 North Central Avenue
Skokie, IL 60077
Phone: (847) 676-8800
Fax: (847) 677-8606 (Technical Support)
Fax: (920) 451-4397 (Ordering)
E-Mail: welchvacuum@thomasind.com
Web-Page: www.welchvacuum.com
OWNER'S MANUAL
CHEMSTAR
MODELS:
Contents:
FOR
VACUUM PUMPS
®
1374N
1376N
1400N
1402N
Installation
Operation
Maintenance
Warranty
MSDS Sheet For Pump Oil
Specifications
Parts List and Expl. Views
Applications Booklet
WARNING
For outside U.S. and Canada, contact your local
Rietschle Thomas sales office, see back page
Part No. 67-0544R3.2
Printed in USA
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Chapters
Table of Contents
Related Manuals for Welch CHEMSTAR 1402N
Summarization of Contents
Installation
Introduction to Installation
Overview of the manual's purpose for installation and maintenance procedures.
Unpacking the Vacuum Pump
Procedures for safely removing and inspecting the pump from its shipping case.
Pump Mounting Procedures
Guidance on mounting the pump, including considerations for mounted and unmounted units.
Optimal Pump Location
Recommendations for placing the pump in a clean, ventilated area for efficient operation and maintenance.
Exhaust System Considerations
Factors influencing exhaust connections and the importance of exhaust system cleanliness.
Electrical Power Requirements
Reviewing power source and motor ratings for correct voltage, phase, and frequency.
Motor Overload Protection
Details on thermal overload protection for single-phase motors and requirements for larger motors.
Vacuum Connection Guidelines
Advice on selecting and implementing vacuum connections for optimal pumping speed.
Vacuum Gauge Selection
Guidance on choosing appropriate vacuum gauges based on pressure range and measurement needs.
Using Traps for Vapor Control
Explains the purpose and types of traps for managing corrosive or condensable vapors.
Vacuum Pump Lubricant Types
Information on DIRECTORR Gold oil and other lubricants for specific applications.
Operation Procedures
Starting the Vacuum Pump
Steps and precautions before initiating pump operation, including cleanliness checks.
Vacuum System Leak Detection
Methods for identifying and locating leaks in the vacuum system using various techniques.
Shutting Down the Vacuum Pump
Proper procedures for safely shutting down the CHEMSTAR pump, including system isolation.
Understanding Gas Ballast
Explanation of the gas ballast principle and its effect on pump operation with vapors.
Condensate Management with Gas Ballast
How gas ballast helps prevent condensate formation and its impact on pump performance.
Pump Operation Without Gas Ballast
Describes pump behavior and potential issues when gas ballast is not used with vapors.
Pump Operation with Gas Ballast
Explains how gas ballast facilitates vapor expulsion and prevents contamination.
Controlling Gas Ballast Flow
Adjusting ballast flow for optimal performance and potential temperature impact.
Additional Contamination Control Methods
Discusses alternative methods like oil separators or cold traps for contamination control.
Maintenance and Troubleshooting
Diagnosing Vacuum Problems
Identifying causes of poor vacuum readings, including leakage, contamination, and oil condition.
Oil Management and Replacement
Procedures for draining, flushing, and refilling the vacuum pump oil for optimal performance.
Repairing Oil Leaks
Locating and fixing oil leaks caused by gasket failures or improper sealing on pump components.
Repairing Vacuum Leaks
Steps for preparing mating surfaces and performing temporary or permanent leak repairs on the pump.
Troubleshooting Drive Issues
Steps to diagnose and resolve problems related to the pump's motor and belt drive system.
MSDS for Vacuum Pump Oil
MSDS Identification
Identification of the chemical name, synonyms, manufacturer, and contact information for the oil.
Hazardous Ingredients Identification
Lists hazardous components, exposure limits, and OSHA compliance status for the oil.
Physical and Chemical Characteristics
Details on appearance, odor, specific gravity, vapor pressure, solubility, and boiling point of the oil.
Fire and Explosion Hazards
Information on flash point, flammable limits, extinguishing media, and fire-fighting procedures for the oil.
Physical Hazards and Reactivity
Stability, polymerization, conditions to avoid, and hazardous decomposition products of the oil.
Health Hazard Data
Details potential health effects from eye, skin, inhalation, and ingestion exposure to the oil.
Symptoms of Exposure
Describes signs and symptoms of exposure and outlines first aid measures for the oil.
Safe Handling and Use Precautions
Guidelines for storage, handling, waste disposal, and spill response for the oil.
Control Measures and PPE
Ventilation, respiratory protection, gloves, eye protection, and clothing recommendations for safe use.
Accessory Section
Coaxial Traps
Description of coaxial traps for reducing oil backstreaming and their specifications.
Modular Sieve Traps
Details on modular sieve traps for absorbing hydrocarbons and removing water vapor.
Dry Ice Cold Traps
Information on dry ice cold traps for low-temperature trapping of vapors.
Liquid Nitrogen Cold Traps
Description of liquid nitrogen cold traps for efficient vapor trapping.
Applications Booklet for Corrosive Gases
Health and Safety
Key safety precautions for operating the pump with corrosive gases.
Building a Vacuum System for Corrosive Gases
Guidance on oil selection, connections, accessories, and exhaust systems for corrosive gases.
Operating with Corrosive Gases
Procedures for using gas ballast, dilution, and purging with corrosive gases.
Recommendations for Pumping Corrosive Gases
Specific advice for handling acids, halogens, anhydrides, and other corrosive gases.
Pumping Particulates and Gas Streams
Recommendations for using particulate traps and oil filtration systems for gas streams.
Extending Service Life through Proper Maintenance
Strategies for prolonging pump life via maintenance and oil management.
Chemical Properties of Corrosive Gases
References for understanding chemical properties and safe handling of corrosive gases.
Troubleshooting Your CHEMSTAR Pump
Common problems and solutions when operating with corrosive gases.
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