Welch Allyn Medical Diagnostic Equipment 2511, 2515 User Manual

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OWNER’S MANUAL

FOR

ASPIRATION / FILTRATION

VACUUM SYSTEM

MODELS: 2511 & 2515

Approval Agency’s

Model 2511B-75 / 2511C-75

Model 2515B-75

Model 2515C-75

Warning

Not recommended for pumping acid, base or organic vapors or gases.

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

For outside of U.S. and Canada, contact your local Rietschle Thomas sales office, see back page

Part No. 67-1772R1.1

Printed in USA

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.

These units confirm to the SI International system of units of measurement.

The following symbols (with recommendation of IEC1010 ) of warning will be found on the pump.

Caution - refer to accompanying documents

Caution - risk of electrical shock

Caution - hot surface

Double Insulated

OFF (Power)

ON (Power)

WARNING

Motor includes a self resetting thermal cutout and the pump could restart without actuation under fault condition.

2

TABLE OF CONTENTS

Section 01 - SAFETY INFORMATION

1.10Caution To Prevent Injury

1.20Caution To Reduce Risk Of Electrical Shock

1.30Warning To Reduce Risk Of Electrocution

1.40Danger To Reduce Risk Of Explosion Or Fire

Section 02 - INSTALLATION

2.10Introduction

2.20Unpacking

2.30Pump Mounting

2.40Pump Location

2.50Intake And Discharge Provision

2.60Electrical Power

2.70Vacuum Connection

2.80Vacuum Gauges

2.90Traps

Section 03 - OPERATION

3.10Starting Procedures

3.20Leak Detection

3.30Operating Pressure Range

3.40Shutdown Procedures

Section 04 - MAINTENANCE

4.10Maintenance Procedures

Section 05 - TROUBLESHOOTING

5.10Vacuum Problems

5.20Pressure Problems

5.30Trouble Shooting Guide For 2515

5.40Trouble Shooting Guide For 2511 And 2515

Section 06 - SPECIFICATION

6.10Specification Table

Section 07 - WARRANTY

Section 08 - EXPLODED VIEWS AND PARTS LIST

8.10Exploded View And Parts List For 2511B-75 / 2511C-75 / 2511C-76

8.11Exploded View And Parts List For 2515B-75 / 2515C-75 / 2515C-76

8.12Exploded View And Parts List For 1475K-20

Section 09 - KITS AND ACCESSORIES

3

SECTION 1: SAFETY INFORMATION

1.10Caution: To Prevent Injury...

1.11Never 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.

1.12Keep the cord away from heated surfaces. All electrical products generate heat. To avoid serious burns never touch unit during or immediately after operation.

1.13Never block any air openings or place it on a soft surface where the openings may be blocked.

The air openings are for ventilation of the motor inside the housing. Keep all air openings free of lint, dirt and other foreign objects.

1.14Models 2511 and 2515 are thermally protected and can automatically restart when the protector resets. Always disconnect power source before servicing.

1.15Never drop or insert fingers or any other object into any openings.

1.16Do not operate this product where oxygen is being administered.

1.17Wear safety glasses and goggles when operating this product. Never point any air nozzle or air sprayer toward another person or any part of the body.

1.18Use only in well ventilated areas.

1.19Do not use any tools or attachments without first determining maximum air pressure for that tool or attachment (applies to model 2511 only). Be sure to properly identify intake and discharge before using pump. See Section 2.50.

WARNING

Do not fill the collection jar above the safe fill level line indicated on the jar.

1.20Caution: To Reduce Risk Of Electrical Shock...

1.21Do not disassemble. Disassembly or attempted repairs if accomplished incorrectly can create electrical shock hazard. Refer servicing to qualified service agencies only.

1.22115V unit is supplied with a three pronged plug.

Be sure to connect pump to a properly grounded outlet only.

1.30Warning: To Reduce Risk Of Electrocution...

1.31Do not use this product in or near area where it can fall or be pulled into water or other liquids.

1.32Do not reach for this product if it has fallen into liquid. Unplug immediately.

1.33Never operate this product outdoors in the rain or in a wet area.

1.40Danger: To Reduce Risk Of Explosion or Fire...

1.41Do not use this pump in or near explosive atmospheres or where aerosol (spray) products are being used.

1.42Do not pump anything other than atmospheric air.

1.43Do not pump combustible liquids or vapors with this product or use in or near an area where flammable or explosive liquids or vapors may exist.

1.44Do not use this product near flames.

WARNING

Failure to observe the above safety precautions could result in severe bodily injury, including death in extreme cases.

4

SECTION 2: INSTALLATION

2.10Introduction

2.11This 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.

2.20Unpacking

2.21Carefully remove the Aspiration/Filtration Vacuum System from the shipping case. Preserve all paperwork for future reference. If damage has occurred from shipment a claim must be filed with the carrier immediately; preserve the shipping carton for inspection by the carrier. If you are required to communicate with your dealer or Welch Vacuum, be sure to include your order numbers for quick identification. Do not return the pump to the factory without first calling for a returned goods number.

2.30Pump Mounting

2.31Rubber feet are attached to the pump. Rubber feet are excellent for applications involving a semi-flexible surface such as a bench top; they help to isolate noise and eliminate creeping. All Aspiration/Filtration Vacuum Systems should be mounted on a horizontal plane.

2.40Pump Location

2.41The Aspiration/Filtration Vacuum System should be located preferably in a clean, dry, and well ventilated area. Please be sure not to block the ventilation holes located on the motor housing. The system should be placed where the surrounding temperature remains between 10°C and 40°C (50°F and 104°F). Always check to insure the location chosen is protected from direct or indirect

moisture contact. Welch recommends that the pump be installed at the highest point within the system to prevent possible water condensate from entering the pump. The pump should be located as closely to its system in order to utilize it most efficiently.

WARNING

The motor is thermally protected and will automatically restart unexpectedly when the overload device resets. Don’t pump flammable or explosive gases or vapors or operate this pump in an atmosphere containing flammable or explosive gases or vapors.

5

2.50Intake And Discharge Provision

2.51The vacuum regulator and vacuum dial gauge is attached to the collection jar. The vacuum regulator allows the vacuum level to be set between roughly atmospheric pressure and the maximum vacuum allowed for the pump model. The collection jar and hydrophobic filter keeps water from accidentally being drawn into the unit. The regulator allows discharge pressure to be set between atmospheric and the maximum possible for the pump model. Model 2511 is equipped with a pressure port.

Note: Adjusting the vacuum regulators will affect the performance of the pump.

 

Pressure / Exhaust

Intake

Vacuum Regulator

Vacuum Gauge

 

Model 2511B-75 & 2511C-75

Intake

Discharge / Exhaust

Vacuum Regulator

Vacuum Gauge

 

Model 2515B-75

Intake

Discharge / Exhaust

Vacuum Regulator

Vacuum Gauge

Model 2515C-75

WARNING

Never block the discharge port. If the exhaust is blocked, pressure will build-up in the pump above its rated operating pressure.

Be sure to call Welch technical service prior to start up at 847-676-8800 if you have any questions. 6

2.60Electrical Power

2.61Power 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.

2.62Overload Protection (Model 2515)

Motor thermal overload protection is made available by the motor manufacturer as an aid to minimize motor failure. Overload protection is a standard feature on both 50 and 60 Hz single-phase-motors. The motors have automatic overload protection. Automatic reset protection is designed to reset itself after a predetermined cooling period. If the fault to the drive remains unaltered, the motor will cycle on and off until the fault is corrected.

2.63Servicing of Double-Insulated Product (Model 2511)

In a double-insulated product, two systems of insulation are provided instead of grounding.

No grounding means is provided on a double-insulated product, nor should a means for grounding

to be added to the product. Servicing of a double-insulated product requires extreme care and knowledge of the system and should be done only by qualified service personnel. Replacement parts for the double-insulated product must be identical to those parts in the product.

2.64Classification And Symbol Glossary

2.70Vacuum Connection

2.71For best results, Welch recommends the length of the tubing between the pump and the chamber be kept as small as possible.

2.80Vacuum Gauges

2.81All Aspiration/Filtration Vacuum Systems come with dial vacuum gauges. The vacuum gauge gives negative pressure - That is pressure below atmospheric. The reference point for the gauge is atmospheric pressure.

2.90Traps

2.91The need for a Trap

The pumps will handle humid air. All wetted aluminum parts are treated for corrosion protection from moisture. All other wetted parts are stainless steel. A plastic trap with a float valve is attached to the regulator assembly to prevent water condensate from accidentally being ingested into the pump.

See figure below.

Filtration Manifold

Model 2515

WARNING

The pump is not recommended for pumping acid, base or organic vapors or gases. Serious damage to the pump will shorten the pump’s service life. In addition, pumping flammable vapors or gases can lead to serious safety hazard leading to fire or explosion.

7

SECTION 3: OPERATION

3.10Starting Procedures

3.11Starting aWelch 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. Set the device on a level, sturdy surface so the controls can be easily reached and adjusted. Connect one end of the application tubing to the lid vacuum port.

Note: The in-line hydrophobic filter is designed to prevent foreign material from being

drawn into the device. Pump performance may decrease if the hydrophobic filter gets wet or build up of forgein materialsor Medfilter occurs. It may be necessary to periodically change the hydrophobic filter

CAUTION

Do not move this device with a full collection jar.

1.Be sure that the power switch is in the OFF (down) position. Plug in the device and turn the switch to the ON (up) position.

2.Block the application tube leading from the collection jar and allow the gauge to reach stable vacuum level.

3.Set vacuum level by turning the regulator knob counter-clockwise to increase vacuum or clockwise to decrease vacuum..

Note: This procedure should be performed each time you use this device.

3.12Cleaning The Device

1.Make sure the ON/OFF switch is in the OFF (down) position.

2.Unplug the device from the wall outlet and allow suction level to drop.

3.Remove the application tube from the lid vacuum port. Tubing should be cleaned after every use. Run hot water through it. Soak in a solution of one part of vinegar to three parts hot water

for 20 minutes. Rinse with hot tap water and air dry.

4.Remove the pump tubing from the top of the jar lid.

5.Remove the jar from the holder and place on a firm, flat surface. Release the tabs and lift the lid from the jar.

6.Wash the jar, gasket, lid and tube in a hot water/dishwashing detergeant solution and rinse with hot tap water. Soak in a solution of one part of vinegar to three parts hot water for 20 minutes. Rinse with hot tap water and air dry.

7.Wipe the outside of the case with a clean, damp cloth after each use.

3.20Leak Detection

3.21The importance of eliminating all leaks in a vacuum system is obvious. The pump must remove this added volume of leaked gas to maintain the desired vacuum. Leaks for these pumps can be located by slightly pressuring the system and painting the suspected area with a thick soap solution. Escaping air will produce soap bubbles.

8

3.30Operating Pressure Range

3.31Aspiration/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 (Model 2511 only). Consult the Specification Table for the ratings of your specific model (See Section 6, Specifications).

3.40Shutdown Procedures

3.41After use, Welch recommends the pump be run for about 2 minutes disconnected from the vacuum process. The air pumped through the mechanism will purge out water vapor or droplets of water condensate that may have formed on the inside of the pump. This purge of the pump mechanism helps prevent corrosion.

SECTION 4: MAINTENANCE

4.10Maintenance Procedures

4.11Maintaining a Welch Aspiration/Filtration Vacuum System

These units are 100% oil-free. The pump employs a non-lube piston and cylinder. No maintenance is necessary for the bearings. All bearings are sealed and permanently lubricated. Lubrication should not be attempted. The units are built for continuous duty operation with the quietness and durability of a diaphragm, but with piston performance.

4.12Hydrophobic Filter Replacement

Change the filter whenever foreign material is drawn into it or if you notice a reduction in vacuum level.

1.Disconnect the long tube from the fitting on top of the jar lid.

2.Gently pull the hydrophobic filter off of the short tube, that is connected to the regulator inlet port, and then remove the long tube from the hydrophobic filter .

3.With the green dot facing down, push the new hydrophobic filter into the short tube, that is connected to the regulator inlet port, then push the long tube.

4.Connect the long tube to the green dot facing barb, and then connect to the fitting on top of the jar lid.

9

SECTION 5: TROUBLESHOOTING

5.10VACUUM PROBLEMS

5.11Leakage, 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. This can be accomplished by blocking of the intake and reading the vacuum level on

the gauge (See Section 2.80).

5.20PRESSURE PROBLEMS

5.21Leakage and contamination are the general causes of problems associated with poor pressure. To operate at maximum efficiency a system must be thoroughly clean. If the system is completely

clean and free from leaks and unwarranted pressure problems still exist, the pump/compressor should be

checked by a service technician.

5.30 TROUBLE SHOOTING GUIDE FOR 2515

Poor

Poor

Loud

 

 

Pumping

Vacuum

Unit

Possible Cause

Corrective Action

Speed

 

 

 

 

X

X

X

Damaged Valves

Replace flapper Valves

 

 

 

 

 

X

X

X

Debris in Valves

Remove debris and check

 

 

 

 

for valve damage

 

 

 

 

 

X

X

X

Damaged Gasket

Replace Gasket

 

 

 

 

 

X

X

X

Loose Head Screw

Tighten Head Screw

 

 

 

 

 

X

X

X

Loose Fitting

Tighten Fitting

 

 

 

 

 

Trouble Shooting Guide continous on next page.

10

5.40 TROUBLE SHOOTING GUIDE FOR 2511 / 2515

 

 

 

 

 

 

 

Symptoms

Possible Cause

Remedies

 

Reduced/low

1.

Clogged hydrophobic

1.

Replace the filter

 

vacuum

 

filter.

 

following directions in

 

 

 

 

 

this manual. (Section 4.12)

 

 

2.

Regulator improperly

2.

Set regulator vacuum

 

 

 

set.

 

level following operating

 

 

 

 

 

instructions.

 

 

3.

Air leak.

3.

Check the tubing and

 

 

 

 

 

connectors for possible leaks.

 

 

 

 

 

Attach, tighten or replace.

 

 

4.

Jar lid gasket not

4.

Be sure the jar lid and

 

 

 

secured to jar.

 

gasket fit tightly on the jar.

 

Device does

1.

Power cord not

1.

Plug in the power cord.

 

not start

 

plugged in.

 

 

 

 

2.

Defective switch.

2.

Contact your service

 

 

 

 

 

center or distributor. (See back page)

 

 

3.

Vacuum still exists

3.

Disconnect tubing from the

 

 

 

in system.

 

collection jar to

 

 

 

 

 

release vacuum.

 

 

 

 

 

Reconnect tubing and

 

 

 

 

 

turn on the device.

 

Gauge reads

1.

Faulty gauge.

1.

Contact your service

 

incorrectly

 

 

 

center for repair (410) 712-4100.

 

Device runs but

1.

Gauge tubing not

1.

Check the tubing and

 

gauge reads

 

connected or is

 

connectors for possible leaks.

 

zero

 

leaking.

 

Attach, tighten or replace.

 

Device stops

1.

Device overheated.

1.

Unplug device and allow to

 

running during

 

 

 

cool for 10 minutes. Plug in

 

use

 

 

 

and restart.

 

 

2.

Blown fuse or circuit

2.

Replace fuse or reset

 

 

 

breaker in household

 

breaker.

 

 

 

circuit.

 

 

 

 

3.

Low voltage to device.

3.

Too many motor operated

 

 

 

 

 

appliances on same circuit.

11

SECTION 6: SPECIFICATION

6.10 SPECIFICATION TABLE

 

 

 

 

 

 

 

 

 

 

 

Model 2511

 

 

Model 2515

 

 

 

 

 

 

 

 

Cat. No.

2511B-75

2511C-75

2511C-76

2515B-75

2515C-75

2515C-76

 

 

 

 

 

 

 

 

 

Free Air Displacement CFM (L/min)

0.39(11)

0.32(9.2)

 

0.39(11)

1.2(34)

1.0(28)

 

1.2(34)

 

 

 

 

 

 

 

 

 

Maximum Vacuum in. Hg

 

21.3

 

 

 

27.2

 

 

Ultimate Vacuum Torr (mbar)

 

219(292)

 

 

 

70(93)

 

 

Dimensions L x W x H in. (cm)

11.0 x 8.3 x 10.0 ( 28 x 21 x 25.5)

14.8 x 8.3 x 10.0 (37.5 x 21 x 25.5)

 

 

 

 

 

 

 

 

 

Shipping Weight, lbs

 

6.4

 

 

 

19

 

 

 

 

 

 

 

 

 

 

 

Electrical Requirements

115V, 60

230V,

 

100V,

115V, 60

230V,

 

100V,

Hz

50Hz

 

50/60Hz

Hz

50Hz

 

50/60Hz

 

 

 

12

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 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.

WARRANTY

This Welch Vacuum product is warranted to be free from defects in material and workmanship. The liability of Welch Rietschle Thomas under this warranty is limited to servicing, adjusting, repairing or replacing any unit or component part which in the judgment of Welch Rietschle Thomas has not been misused, abused or altered in any way causing impaired performance or rendering it inoperative. No other warranties are expressed or implied. The method of executing this warranty: servicing, adjusting, repairing or replacing shall be at the discretion of Welch Rietschle Thomas. Vacuum pumps that have been used for any period, however short, will be repaired under this warranty rather than replaced.

The warranty is effective for one year from the date of original purchase when:

1.The warranty card has been completed and returned.

2.The product is returned to the factory or other designated service centers, freight prepaid.

3.The product in our judgment is defective through no action or fault of the user.

If the product has become defective through misuse, abuse, or alteration, repairs will be billed regardless of the age of the product. In this event, an estimate of the repair costs will be submitted and authorization of these charges will be required before the product is repaired and returned.

To reduce additional charges and delays either within or outside of the warranty period, contact Welch Rietschle Thomas @ (410) 712-4100 for a return authorization number. Products without a return authorization number will be refused by our receiving department. Before shipping, properly pack the pump, insure it against loss or damage, and on the outside of the pump packaging and the packing slip write in the return authorization number. Pumps damaged due to improper packaging are the customer’s responsibility.

13

SECTION 8: EXPLODED VIEW & PARTS LIST

8.10 Model 2511B-75 / 2511C-75 / 2511C-76

ON/OFF SWITCH

PUMP

PRESSURE PORT

LONG

COLLECTION

 

 

 

TUBING

JAR

REGULATOR

VACUUM GAUGE

SHORT

HYDROPHOBIC

APPLICATION

KNOB

 

TUBING

FILTER

TUBING

14

8.11 Model 2515B-75 / 2515C-75 / 2515C-76

COLLECTION

LONG

PUMP

ON/OFF SWITCH

JAR

TUBING

 

 

APPLICATION

HYDROPHOBIC

SHORT

REGULATOR VACUUM GAUGE

TUBING

FILTER

TUBING

KNOB

15

8.12 Model 1475K-20

COLLECTION

JAR

SHORT

TUBING

APPLICATION

TUBING

LONG TUBING

HYDROPHOBIC

FILTER

16

SECTION 9: KITS AND ACCESSORIES

9.10REPAIR KITS

9.11Repair Kit for Model 2515

 

Service

Seal Gasket

Description

Kit

Kit

 

2515K-01

2515K-02

Connecting Rod Assembly #1

1

-

Handle Screw #2

2

-

Head Screw #3

4

-

Head O-Ring #4

1

1

Valve Plate Assembly #5

1

-

Cylinder O-Ring #6

1

1

17

9.20 VACUUM ACCESSORIES

9.21 Table for Vacuum Accessories

Description

Welch Kit

Adapter S.S. 40mm

1475K-01

 

 

 

8-Channel Adapter S.S. 40mm

 

 

1475K-02

 

 

1-Channel Adapter for dispoable tips, w/o ejector

1475K-03

 

 

 

Rubber Adapter for Pasteur pipettes

1475K-04

 

 

 

8-Channel Adapter for dispoable tips, w/ejector

 

 

1475K-05

 

 

Adapter S.S. 150mm

1475K-06

 

 

 

4-Channel Adapter S.S. 40mm

 

 

1475K-07

 

 

Adapter S.S. 280mm

1475K-08

 

 

 

1-Channel Adapter for dispoable tips, w/ejector

 

 

1475K-09

 

 

Vacuboy Hand Operator w/ 1-Channel Adapter S.S.

 

 

1475K-10

 

 

18

9.30ELECTRICALACCESSORIES

9.31Table for Electrical Accessories

Description

Welch Kit

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

9.40REPLACEMENTACCESSORIES

9.41Table for Replacement Accessories

Description

Welch Kit

Aspiration Kit - Includes: 6 ft tubing, 2000ml Autoclavable jar w/lid, and two hydrophobic filters

1475K-20

ten hydrophobic filters

1475K-21

19

Welch Rietschle Thomas

Vacuum Pump Repair Facility

7301 North Central Avenue

Skokie, IL 60077

Phone: (847) 676-8800

Fax: (847) 677-8606 (Technical Support)

Fax: (920) 451-4397 (Ordering)

Copyright© 1997-2004 Welch Rietschle Thomas Welch is registered trademarks of Welch Rietschle Thomas