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OWNER'S MANUAL FOR
CHEMSTAR
MODELS: 2070, 2080
Be sure to properly identify intake and exhaust before using the pump.
Do not pump liquids with the pump. Pumping liquids will cause the pump
to stop working.
CAUTION! Using fl exible PVC vacuum hose or silicone rubber vacuum
hose with organic solvents such as Methylene Chloride (DCM) may
leach out plasticizers and foul pump internals causing mechanism failure.
®
DRY
WARNING
See Section 2.15
CAUTION
CAUTION
Part No. 642979
Printed in USA

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Summary of Contents for Gardner Denver Welch Chemstar Dry 2070

  • Page 1 OWNER’S MANUAL FOR ® CHEMSTAR MODELS: 2070, 2080 WARNING Be sure to properly identify intake and exhaust before using the pump. See Section 2.15 CAUTION Do not pump liquids with the pump. Pumping liquids will cause the pump to stop working. CAUTION CAUTION! Using fl...
  • Page 2 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 - Safety Information 1.10 Caution: to prevent injury 1.20 Caution: to reduce risk of electrical shock 1.30 Warning: to reduce risk of electrocution 1.40 Warning: to reduce risk of explosion or fi re Section 02 - Installation 2.10 Environmental conditions...
  • Page 4: Section 01 - Safety Information

    Section 1: SAFETY INFORMATION 1.10 Caution: To Prevent Injury... 1.11 Never operate this product if it has a damaged cord or plug. If it is not working properly, has been dropped, damaged or has fallen into water, replace the cord of same type and rating. 1.12 Keep the cord away from heated surfaces.
  • Page 5: Warning: To Reduce Risk Of Electrocution

    1.30 Warning: To Reduce Risk of Electrocution... 1.31 Do not use this product in or near area where it can fall or be pulled into water or other liquids. 1.32 Do not reach for this product if it has fallen into liquid. Unplug immediately. 1.33 Never operate this product outdoors in the rain or in a wet area.
  • Page 6: Section 02 - Installation

    Section 2: INSTALLATION 2.10 Environmental Conditions The Pump is rated for indoor use only. Maximum altitude 2000 meters. Operating temperature range 10 C to 40 2.11 Introduction Intended use of the proprietary oil-less vacuum system consisting of a vacuum blower in combination with a PTFE diaphragm pump providing deep dry vacuum for chemical resistant applications.
  • Page 7: Discharge Provisions

    2.15 Discharge Provisions Chemstar Dry intake and exhaust fi ttings are NW25 with a 3/8-18 NPT threaded ID. All systems come with one hose barb which is supplied loose. The hose barb accepts 3/8” ID. hose. By threading the hose barb in the exhaust port of the pump, a vent line can be attached which allows gases and vapors pumped through the system to be piped from the work area into a hood.
  • Page 8: Section 03 - Operation

    Section 3: OPERATION 3.10 Starting Before attaching the pump to a system it is well to familiarize yourself with the function and action of the pressure vacuum pump which you have acquired. Review the power requirements as described in Section 2.16. Welch recommends running the pump for a few minutes to warm it up before use.
  • Page 9: The Eff Ects Of Unwanted Vapor And Automatic Gas Ballast

    3.14 The Eff ects of Unwanted Vapor and Automatic Gas Ballast Systems which contain undesirable vapors cause diffi culty both from the standpoint of attaining desirable ultimate pressures. A vapor is defi ned as the gaseous form of any substance which is usually a liquid or a solid.
  • Page 10: Fault Modes

    Power-down sequence. 1. Press Power button to start power-down sequence. 2. The MAX VAC LED and third RAMP LED will go off and the blower will begin a ramp down to a fi xed RPM matching the pumping speed of the diaphragm pumps. The POWER ON and second RAMP LED’s will fl...
  • Page 11: Specifi Cation Chart

    Section 4: SPECIFICATION 4.10 Specifi cation Chart Model 2070 2080 Maximum Flow LPM (m3/hr) @ 50 or 60Hz 150 (9) @ 2 torr 300 (18) @ 2 torr Flow @1Torr(1.33 mbar), LPM (m3/hr) 140 (8.4) 286 (17.2) Ultimate Vacuum Pressure, torr (mbar) 0.05 (0.07) 0.05 (0.07) Inlet / Outlet Connection...
  • Page 12: Performance Charts

    4.20 Performance Charts Pumpdown on 41-L tank CHEMSTAR DRY Models 1000 Time - sec Model 2080 Model 2070 Pumping Speed CHEMSTAR DRY Models 1000 0.01 1000 Vacuum pressure - Torr Model 2080 Model 2070...
  • Page 13: Exploded View

    Section 5: DRAWINGS 5.10 Exploded View ITEM NO. DESCRIPTION QTY. ITEM NO. DESCRIPTION QTY. NUT HEX #10-32 X 3/8” X 1/8” FITTING NW25 X 3/8” NPT WASHER BRASS FLAT #10 TUBE GAS BALLAST SLEEVING 1/2” ID X 15” FITTING REDUCER 3/8” X 1/4” HANDLE FITTING ADAPTER NW25 O-RING 017...
  • Page 14: Dimensional Drawing

    5.20 Dimensional Drawing This Kit is a one Head Service Kit 5.30 System Electronic Boards CONNECT 604818 HERE CONNECT 604819 HERE OTHER END CONNECTS TO 604811 OTHER END CONNECTS TO 51-4014 SOLENOID VALVE CONNECT 604814 HERE OTHER END CONNECTS TO 51-4221 BLACK WIRE CONNECTS TO UNMARKED TERMINAL WHITE WIRE CONNECTS TO "N"...
  • Page 15: Section 06 - Maintenance And Repair

    Section 6: MAINTENANCE AND REPAIR 6.10 General Maintenance. Call factory, Phone 847-676-8800. Section 7: WARRANTY UNPACKING Inspect the pump carefully. If any damage has occurred, fi le claim with the carrier immediately. Save the shipping container for carrier to inspect. OPERATING PUMP Refer to the enclosed Instruction/Operation Manual for all information to properly operate and maintain the pump.
  • Page 16 Welch Vacuum by Ingersoll Rand 1601 Feehanville Drive, Ste 550 Mount Prospect, IL 60056 Phone: (847) 676-8800 (Technical Support) Fax: (847) 677-8606 E-Mail: gdwelchvacuum@gardnerdenver.com Web-Page: www.welchvacuum.com Copyright © 2020 Gardner Denver Welch Vacuum Technology, Inc. Welch is registered trademarks of Gardner Denver...

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