WELCH-ILMVAC OWNER’S MANUAL FOR ASPIRATION / FILTRATION VACUUM SYSTEM MODEL: 2511 Models 2511B-75 / 2511C-75 / 2511C-76 / 2511C-77 Warning Not recommended for pumping acid, base or organic vapors or gases. Welch-Ilmvac 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.com For outside of U.S. and Canada, contact your local Gardner Denver sales office, see back page Part No.
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. CAUTION Cautions are found where failure to observe the instruction could result in damage to the equipment, associated equipment and process.
TABLE OF CONTENTS 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 Danger To Reduce Risk Of Explosion Or Fire Section 02 - INSTALLATION 2.10 Introduction 2.20 Unpacking 2.30 Pump Mounting 2.40 Pump Location 2.50 Intake And Discharge Provision 2.60 Electrical Power 2.70 Vacuum Connection 2.80 Vacuum Gauges 2.90 Traps Section 03 - OPERATION 3.10 Starting Procedures 3.20 Leak Detection 3.
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, please return the product to a Welch service center for examination and repair. 1.12 Keep the cord away from heated surfaces. All electrical products generate heat. To avoid serious burns never touch unit during or immediately after operation. 1.
SECTION 2: INSTALLATION 2.10 Introduction 2.11 This manual has been compiled not only for the care and maintenance of the Welch Aspiration/Filtration Vacuum System now in your possession, but as a helpful reference and guide to prevent many problems which may occur if used improperly. 2.20 Unpacking 2.21 Carefully remove the Aspiration/Filtration Vacuum System from the shipping case. Preserve all paperwork for future reference.
2.50 Intake And Discharge Provision 2.51 The vacuum regulator and vacuum dial gauge enable control of fluid aspiration into to the collection jar. The vacuum regulator allows the vacuum level to be set between roughly a atmospheric pressure and the maximum vacuum allowed for the pump model. A float valve on the collection jar and, hydrophobic filter keep water from accidentally being drawn into the unit.
2.60 Electrical Power 2.61 Power Source Review Review the power source and the motor rating to be sure they agree in voltage, phase, and frequency. Serious damage may occur to the motor if it is connected to an improper voltage. All Welch pumps must be grounded. Grounding reduces the risk of electric shock in the event of an electrical short circuit. The plug must be plugged into a properly grounded outlet. Consult your local electrical codes if you have doubts. 2.
SECTION 3: OPERATION 3.10 Starting Procedures 3.11 Starting a Welch Aspiration/Filtration Vacuum System Before attaching the pump to a system, familiarize yourself with the function and action of the Aspiration/ Filtration Vacuum System that you have acquired. Review the power requirements as described in Section 2.60. Welch recommends running the pump for a few minutes to warm it up, before use. The warm-up improves the pumps ability to handle humid air.
3.30 Operating Pressure Range 3.31 Aspiration/Filtration Vacuum Systems are designed to be run from slightly below atmospheric to their maximum vacuum level on the intake side. The pumps also may be run from atmospheric to their maximum rated pressure rating. Consult the Specification Table for the ratings of your specific model (See Section 6, Specifications). 3.40 Shutdown Procedures 3.41 After use, Welch recommends the pump be run for about 2 minutes disconnected from the vacuum process.
SECTION 5: TROUBLESHOOTING 5.10 VACUUM PROBLEMS 5.11 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 the pump is the determination of its maximum vacuum capability.
SECTION 6: SPECIFICATION 6.10 SPECIFICATION TABLE Mo d e l 2 5 1 1 C a t. N o . F r e e A i r D i s p l a c e m e n t C F M ( L /m i n ) 2 5 1 1 B -7 5 2 5 1 1 C -7 5 2 5 1 1 C -7 6 251 5 1C -77 0.39(11) 0.32(9.2) 0.39(11) 0.39(11) 21.3 219(292) Ma x i m u m V a c u u m i n . H g U l ti m a te V a c u u m T o r r ( m b a r ) Dimens io ns L x W x H in. (c m) 11.0 x 8.3 x 10.0 ( 28 x 21 x 25.5) S h i p p i n g W e i g h t, l b s 6.
SECTION 7: WARRANTY IMPORTANT Please Read Carefully Before Operating This Welch® Vacuum Pump Unpacking Inspect the pump carefully. If any damage has occurred, file claim with the freight carrier immediately. Save the shipping container for carrier to inspect. Operating Pump Refer to the Instruction/Operation Manual for all information to properly operate and maintain the pump Warranty The Welch Vacuum product is warranted to be free from defects, in material and workmanship.
SECTION 8: EXPLODED VIEW & PARTS LIST 8.
9.20 9.21 VACUUM ACCESSORIES Table for Vacuum Accessories Operating Instructions: Hand-Held Pipettor (cat. No. 1475K-10) for Welch® Aspirator Stations Operation The vacuum is controlled by the pressure sensitive turquoise control button on the top of the hand piece. By means of the plastic screw opposite the control button, the residual suction level can be set, which will prevent dripping of waste liquids from the tip or pipette.
Accessories for Welch Aspiration Stations Compact Model 2511 Station Cat. No. Description 2511B-75 11 l/min 115V 60Hz 2511C-75 9.2 l/min 230V 50Hz 2511C-76 11 l/min 100V 60/50Hz High Flow Model 2515 Station Cat. No.
9.30 9.31 ELECTRICAL ACCESSORIES Table for Electrical Accessories $ESCRIPTION 7ELCH +IT 115V 60Hz - Maintained on/off footswitch 1430A 115V 60Hz - Variable on/off footswitch 1430B 90-230V 50/60Hz - Variable on/off footswitch with IEC connections 1430C 9.40 REPLACEMENT ACCESSORIES 9.
Sales and Service Offices For Gardner Denver Thomas, Welch Vacuum Technology USA, Canada, Latin America Gardner Denver Thomas, Inc., Welch Vacuum Technology 5621 W. Howard St. Niles, IL 60714 USA Phone: (847)-676-8800 Fax: (847)-677-8606 Email: gdwelchvacuum@gardnerdenver. com Asia Gardner Denver Hong Kong, LTD. Unit 2503, Metropole Square NO. 2 On Yiu St., Siu Lek Yuen Shatin, New Territories, Hong Kong, P.R.C. Phone: 852 2690 3502 Fax: 852 2792 4598 Email: thomas.hk@gardnerdenver.
