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 1400N
Summarization of Contents
Section 1: INSTALLATION
1.2 Unpacking
Instructions for safely removing and inspecting the pump from its shipping case.
1.3 Pump Mounting
Guidance on how to properly mount the pump, covering both mounted and unmounted types.
1.6 Electrical Power
Instructions for reviewing power source and motor rating for safe connection.
Section 1: INSTALLATION (Continued)
1.6b Overload Protection
Explains motor thermal overload protection and requirements for larger motors.
1.7 Vacuum Connections
Discusses factors affecting pumping speed and connection choices.
Section 1: INSTALLATION (Continued)
1.8 Vacuum Gauges
Discusses various vacuum gauge types and their suitability for different pressure ranges.
1.9 Traps
Explains the need, function, and care of cold traps for vacuum systems.
1.10 Types Of Lubricants
Details the recommended lubricant and others for special applications.
Section 2: OPERATION
2.1 Starting Procedures
Guidance on familiarizing with the pump and initial setup steps before operation.
2.2 Leak Detection
Methods for detecting large, small, and fine leaks in vacuum systems.
2.4 The Principle of Gas Ballast
Explains the function and benefits of gas ballast in vacuum pumps.
Section 2: OPERATION (Continued)
2.4b The Presence and Removal of Condensate
Details how condensation affects pump operation and how gas ballast mitigates it.
2.4c Pump Function Without Gas Ballast
Describes pump behavior and contamination issues when gas ballast is not used.
Section 3: MAINTENANCE
3.1 Vacuum Problems
Discusses common vacuum issues like pressure determination and oil contamination.
3.2 Oil Changes and Oil Level
Provides instructions for draining, flushing, and refilling the pump's oil.
Section 3: MAINTENANCE (Continued)
3.5 Drive Problems
Guides on diagnosing and resolving issues related to the pump's drive system.
Section 4: QUICK REFERENCE CHARTS
CHEMSTAR VACUUM PUMP SPECIFICATIONS
Table detailing technical specifications for various CHEMSTAR pump models.
Section 5: PUMPING SPEED CURVES
Vacuum Pump 1400N
Pumping speed curves for the 1400N model, showing performance under different conditions.
Vacuum Pump 1376N/1402N
Pumping speed curves for 1376N and 1402N models, illustrating their performance characteristics.
Section 6: MOUNTED PUMPS DIMENSIONAL DRAWINGS
Model 1400N-01
Dimensional drawings and measurements for the Model 1400N-01 vacuum pump.
Model 1402N-01
Dimensional drawings and measurements for the Model 1402N-01 vacuum pump.
Section 7: PARTS LIST AND EXPLODED VIEWS
PARTS LIST FOR 1400N
Detailed list of parts and their corresponding part numbers for the Model 1400N.
Section 7: PARTS LIST AND EXPLODED VIEWS (Continued)
PARTS LIST FOR 1402N
Detailed list of parts and their corresponding part numbers for the Model 1402N.
Section 7: PARTS LIST AND EXPLODED VIEWS (Continued)
PARTS LIST FOR 1376N
Detailed list of parts and their corresponding part numbers for the Model 1376N.
Section 7: PARTS LIST AND EXPLODED VIEWS (Continued)
PARTS LIST FOR 1374N
Detailed list of parts and their corresponding part numbers for the Model 1374N.
Section 8: MSDS for Welch 8995G Gold Vacuum Pump Oil
SECTION 1 - IDENTIFICATION
Provides identification details for the vacuum pump oil, including chemical name and manufacturer.
SECTION 3 - PHYSICAL AND CHEMICAL CHARACTERISTICS
Details the physical properties and characteristics of the vacuum pump oil.
Section 8: MSDS for Welch 8995G Gold Vacuum Pump Oil (Continued)
SECTION 6 - HEALTH HAZARD DATA
Information on health effects, symptoms, and first aid measures for the oil.
Section 8: MSDS for Welch 8995G Gold Vacuum Pump Oil (Continued)
SECTION 8 - CONTROL MEASURES
Recommended control measures including ventilation, respiratory, and personal protective equipment.
Section 9: ACCESSORY SECTION
Coaxial Traps
Describes coaxial traps, their features, and specifications for different ISO sizes.
Modular Sieve Traps
Details modular sieve traps, their function, and available charges for various ISO sizes.
Section 1. Health & Safety (Applications Booklet)
Section 2. Building a Vacuum System to Handle Corrosive Gases
Guidance on constructing a vacuum system suitable for corrosive gases.
Section 3. Operating a Vacuum System Containing Corrosive Gases
Procedures for operating a vacuum system when pumping corrosive gases.
Section 4. Recommendations for Pumping Corrosive Gases
Specific recommendations for handling various corrosive gases safely.
Section 6. Extending Service Life of CHEMSTAR through Proper Maintenance
Strategies for prolonging the service life of the pump through maintenance.
Section 2. Building a Vacuum System to Handle Corrosive Gases (Applications Booklet)
A. Selecting the Correct Vacuum Pump Oil
Explains the importance of specific pump oils for corrosive gas applications.
Section 2. Building a Vacuum System to Handle Corrosive Gases (Applications Booklet)
B. Connecting your CHEMSTAR Pump to the Vacuum System
Advice on choosing connections and fittings to optimize pumping speed.
C 1. Oil Filtration System
Description of the oil filtration system and its available filter elements.
Section 2. Building a Vacuum System to Handle Corrosive Gases (Applications Booklet)
C2. Acid Neutralization Trap
Details the acid neutralization trap, its function, and sizes.
Section 2. Building a Vacuum System to Handle Corrosive Gases (Applications Booklet)
C3. Hermetically Sealed Oil Mist Eliminator
Explains the importance and function of hermetically sealed oil mist eliminators.
C4. Particulate Trap With A Filter Element
Describes particulate traps and their filter elements for protecting pumps.
Section 2. Building a Vacuum System to Handle Corrosive Gases (Applications Booklet)
D. Insuring an Adequate Exhaust System
Importance of installing an exhaust system for safe removal of corrosive gases.
Section 3. Operating a Vacuum System Containing Corrosive Gases (Applications Booklet)
A. Removal of Condensable Corrosive Vapors Using the Gas Ballast
How gas ballast helps remove condensable vapors from corrosive gas streams.
Section 4. Recommendations for Pumping Corrosive Gases (Applications Booklet)
A. Strong Hydrous Acids: Hydrochloric acid (HCI), Hydrogen bromide (HBO), Sulfuric Acid (H₂SO₄), Nitric Acid (HNO3).
Recommendations for handling strong hydrous acids, including dilution and traps.
Section 4. Recommendations for Pumping Corrosive Gases (Applications Booklet)
C. Halogens: Chlorine (Cl₂), Bromine (Br₂).
Recommendations for pumping halogens, including dilution and oil filtration.
Section 4. Recommendations for Pumping Corrosive Gases (Applications Booklet)
E. Trifluoroacetic Acid (F₃CC0₂H)
Recommendations for handling trifluoroacetic acid, emphasizing traps and filtration.
F. Ozone (O₃)
Safety warnings and recommendations for pumping ozone, including concentration limits.
Section 4. Recommendations for Pumping Corrosive Gases (Applications Booklet)
I. Special Note: Pumping oxygen
Warning about using DIRECTORR Gold oil with oxygen and recommending alternatives.
Section 5. Recommendations For Pumping Particulate-Containing Gas Streams (Applications Booklet)
A. Particulate Trap With A Filter Element
Discusses particulate traps and their effect on pumping speed.
Section 6. Extending Service Life of CHEMSTAR through Proper Maintenance (Applications Booklet)
B. Forced Oil Flushing
Provides a step-by-step procedure for performing a forced oil flush on the pump.
Section 7. Chemical Properties of Corrosive Gases (Applications Booklet)
Consult Handbook for Corrosive Gas Properties
Recommends consulting handbooks for chemical properties of corrosive gases.
Section 8. Troubleshooting Your CHEMSTAR Pump (Applications Booklet)
A. Poor Vacuum Reading
Steps to diagnose and resolve issues causing poor vacuum readings.
B. Noisy Pump
Guides on identifying and fixing noise sources in the motor, belt, or pump.
C. Excessive Oil Mist
Tips for identifying and rectifying excessive oil mist from the pump.
WARRANTY
Warranty Terms and Conditions
Details the warranty limitations, effective period, and conditions for service.
Sales and Service Offices
Welch Rietschle Thomas Global Locations
List of sales and service offices worldwide for Welch Rietschle Thomas.
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