U* S. MR DEPT, TECHNICAL MANUAL 8-61.8 
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SUCTION APPARATUS PORTABLE® 3 ELECTRIC Tprui rci fen® 
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WAR DEPARTMENT TECHNICAL MANUAL 
SUCTION 
APPARATUS 
PORTABLE, ELECTRIC 
WAR DEPARTMENT 
MAY 19 4 5 WAR DEPARTMENT TECHNICAL MANUAL 
TM 8-618 
This manual supersedes TM 8-61S, 5 August 1944. 
SUCTION APPARATUS, 
PORTABLE, ELECTRIC 
WAR DEPARTMENT 
MAY 1945 
United States Government Printing Office 
Washington: 1945 WAR DEPARTMENT 
Washington 25, U. C, 30 April 1945 
TM 8-618, Suction Apparatus, Portable, Electric, is published for the 
information and guidance of all concerned. 
[AG 300.7 (7 Mar 45)] 
order of the Secretary of War 
Official: 
J. A. ULIO 
Major General 
The Adjutant General 
G. C. MARSHALL 
Chief of Staff 
Distribution : 
AAF (5); AGE (5); ASF (2); T of Opn (10); Dept (10); Base 
Comd (5); S Div ASF (1); SvC (5); PE (2); Dep 8 (2); 
GH (4) ; SH (2) ; Conv H (2) ; Lab 8 (1) ; A (2) ; CHQ (2) ; 
AF (5) ; T/O & E 8-187 (2) ; 8-510 (2) ; 8-550 (4) ; 8-550S 
(4) ; 8-5SOT (4) ; 8-550-1-T (4) ; 8-560 (2) ; 8-572S (2) ; 
8-580 (3); 8-581 (3); 8-590 (2); 8-610 (1); 8-611 (1); 
8-667 (2). 
Refer to EM 21-6 for explanation of distribution formula. CONTENTS 
Paragraph Page 
PART ONE. INTRODUCTION. 
Section I. General. 
Scope 1 1 
Records 2 5 
II. Description and data. 
Description 3 5 
Data 4 5 
Manufacturers 5 5 
III. Tools and accessories. 
Tools and accessories 6 6 
PART TWO. OPERATING INSTRUCTIONS. 
Section IV. General. 
Scope 7 7 
V. Service upon receipt of equipment. 
Unpacking 8 7 
Assembling 9 9 
VI. Controls and instruments. 
Controls 10 10 
Instruments (Vacuum Gauge) 11 10 
VII. Operation. 
General 12 10 
Using negative pressure (vacuum) 13 11 
Using positive pressure (spraying) 14 11 
PART THREE. MAINTENANCE INSTRUCTIONS. 
Section VIII. General. 
Scope 15 12 
IX. Lubrication. 
After 5 hours of operation 16 12 
After 96 hours of operation 17 12 
X. Preventive maintenance services. 
Operator maintenance (first echelon) 18 12 
Organizational maintenance (second echelon) 19 13 
XL Trouble shooting. 
Motor fails to operate 20 13 
Lack of pressure during operation 21 13 
XII. Maintenance operations. 
Cleaning Gomco compressor 22 14 
Cleaning Sorenson and Sklar compressors 23 16 
Cleaning and sterilizing component parts 24 16 
Cleaning of control bar and air line, Gomco model... 25 17 
Replacing felt filters, Gomco model 26 17 
Repacking filters of Sorenson and Sklar models 27 18 
APPENDIX. DISASSEMBLING AND PACKING 19 This manual supersedes TM 8-618, 5 August 1944. 
PART ONE 
INTRODUCTION 
Section I. GENERAL 
I. Scope 
a. These instructions are published for the information and guidance 
of the personnel to whom this equipment is assigned. They contain in- 
formation on the operation and maintenance of the equipment as well as 
descriptions of the major units and their functions in relation to the other 
components of the equipment. They apply only to the following Medical 
Department items: 
Med. Dept. Item Nomenclature Figure 
3775006 Suction apparatus, portable, 
110 volt, 25 cycle. 
3775007 Suction apparatus, portable, 
110 volt, 50 cycle, 
3775008 Suction apparatus, portable, 1, 2 
110 volt, 60 cycle. 
3775010 Suction apparatus, portable, 
110 volt, D.C. 
3775014 Suction apparatus, portable, 3 
220 volt, 50 cycle. 2 
1. Single Pole Switch. 
2. Motor, 110 V., 60 Cycle. 
Complete. 
3. 3R0I004 Chamber, Filter, Glass: 
4. Vacuum Gauge. 
5. Motor Handle. 
6C Regulating Valve Elbow 
Fitting. 
7. Filter Base. 
8. Yankauer Tube. 
9. SR00058 Tubing, Rubber, 3/g Inch, 
O.D. 3/16 Inch I.D.; 
10. Female Fitting. 
11. Male Fitting, 
Figure 1. Suction apparatus, Sorenson, assembled and ready for use. 3 
1. Motor Handle. 
2. Vacuum Gauge. 
3. Filter Coupling. 
4. 3ROI206 Chamber, Filter, Glass: 
5. Wood Base. 
6. Male Plug. 
7. Single Pole Switch. 
8. Web Strap. 
9. Bottle Holder. 
10. SR00060 Bottle, Wide Mouth, Flint, 
Round 32 Oz.: 
11. Short Angle Tube. 
12. Long Angle Tube. 
13. Carrying Case. 
14. Motor, NO V., 60 Cycle, 
Complete. 
Figure 2. Suction apparatus, Sklar, assembled with accessories, ready for use. 4 
1. Single Pole Switch. 
2. Male Plug. 
3. Neoprene Cord. 
4. Metal Air Line. 
5. Web Strap. 
6. Filter Cover. 
7. Female Fitting. 
8. Silk Pressure Tubing. 
9. Motor Handle. 
10. Complete Control Bar. 
11. Inlet and Outlet Fitting. 
12. SR00059 Stopper, Rubber, 2 Hole, 
No. 9: 
13. Vacuum Gauge. 
14. SR00058 Tubing, Rubber, % Inch, 
O.D. 3/16 Inch I.D.: 
Fipure 3. Suction apparatus, Gomco, cover removed, ready for use. 5 
b. These instructions are arranged in three parts: Part One, Introduc- 
tion; Part Two, Operating Instructions; Part Three, Maintenance In- 
structions. 
c. All requisitions for spare parts should be submitted in accordance 
with the latest revision of ASF Supply Catalog Med-7. 
2. Records 
Xo special maintenance forms are required to be kept by the using 
personnel except as may be prescribed by the Medical Officer in charge. 
Section II. DESCRIPTION AND DATA 
3. Description 
The electric portable suction apparatus is used to suck blood from body 
cavities and to remove blood and other fluids during surgery. The ap- 
paratus may also be used for spraying fluids. 
4. Data 
a. Item No. 3775006 operates on 110 volts, 25 cycles A.C. 
b. Item No. 3775007 operates on 110 volts, 50 cycles A.C, 
c. Item No. 3775008 operates on 110 volts, 60 cycles A.C. 
d. Item No. 3775010 operates on 110 volts, D.C, 
e. Item No. 3775014 operates on 220 volts, 50 cycles A.C. 
f. Vacuum bottles have a capacity of 32 ounces each. The bottles are 
connected in series, so that the overflow from the first suction bottle will 
automatically flow into the second bottle. 
g. Compressor sets up a minimum vacuum of 20 inches. 
h. Compressor sets up a minimum positive pressure of 20 pounds per 
square inch. 
5. Manufacturers 
a. C. M. Sorenson Company, New York, N. Y., Model No. “Field 
Unit.” 
h. J. Sklar Manufacturing Company, Long Island City, N. Y., Model 
No. “U. S. Army Field Hospital.” 
c. Gomco Surgical Manufacturing Corp., Buffalo, N. Y., Model No. 98, 6 
Section III. TOOLS AND ACCESSORIES 
6. Tools and Accessories 
a. Silk pressure tubing (fig. 4(7)). (For use, see par. 14.) 
1. SR00058 Tubing, Rubber, % Inch 
O.D. 3/16 Inch I.D.: 
2. Male Coupling. 
3. Female Coupling. 
4. Yanlcauer Tube. 
5. Poole's Abdominal Suction 
Tube. 
6. Wrench. 
7. Silk Pressure Tubing. 
8. Carrying Case. 
Figure 4. Carrying case cover with ail accessories for Sklar model. 
b. Medical Department Item No. 3547700 Tube, abdominal, suction: 
Poole, 23 Fr., 8}i inch (fig. 4(5). (For use, see par. ISb.) 
c. Tube, Yankauer (3R01260) (fig. 4(4). (For use, see par. 13c.) 
d. Wrench, suction apparatus: For disassembling filters (TR00044). PART TWO 
OPERATING INSTRUCTIONS 
Section IV. GENERAL 
7. Scope 
Part Two contains information for the guidance of the personnel re- 
sponsible for the operation of the equipment. It contains information on 
the operation of the equipment with a description and location of the con- 
trols and instruments. 
Note. Failure or unsatisfactory performance of equipment will be reported on 
WD AGO Form 468. 
Section V. SERVICE UPON RECEIPT OF EQUIPMENT 
8. Unpacking 
a. To unpack the suction apparatus, portable, electric, proceed as fol- 
lows : 
(1) Open the shipping box carefully. 
(2) Remove paper packing in order to uncover the case. 
(3) Lift case from the shipping box. 
h. The suction apparatus, portable, electric, is issued in its carrying 
container assembled and ready for operation, except for plugging in the 
line cord, connecting the suction rubber tubing, silk pressure tubing and 
attachments. 
c. Unpack case as follows: 
(1) Open case by unlatching the hasps and loosening the web strap. 
Lift off the case cover. 
(2) Remove the rubber suction tubing, silk pressure tubing, and ac- 
cessories necessary for operation, from the compartment inside the case 
cover. (See fig. 5.) 
7 8 
1. Poole's Abdominal Suction 
Tube. 
2. Yankauer Tube. 
3. SR00058 Tubing, Rubber, % Inch 
O.D. 3/16 Inch I.D.: 
4. SR00059 Stopper, Rubber, 2 Hole, 
No. 9: 
5. SR00060 Bottle, Wide Mouth, Flint, 
Round, 32 Oz.: 
6. 3R0I004 Chamber, Filter, Glass: 
7. Male Plug. 
8. Motor Handle. 
9. Wood Base. 
10. Motor, NO V., 60 Cycle, 
Complete. 
I I. Web Strap. 
12. Carrying Case. 
13. Silk Pressure Tubing. 
14. Wrench. 
15. Neoprene Cord. 
Figure 5. Sorenson model with cut away of cover. 9 
9. Assembling 
To set up the suction apparatus, portable, electric for operation, proceed 
as follows: 
a. Gomco Model. (1) Attach the silk pressure tubing to the positive 
pressure outlet of the pump by means of the knurled nut (fig. 3(7)) if 
the apparatus is to be used for spraying. 
(2) Attach the rubber tubing to the vacuum bottle by means of the 
knurled nut if the apparatus is used for suction. 
(3) The Yankauer suction tube or the Poole’s abdominal suction tube, 
Medical Dept. Item No. 3547700 may be slipped into the end of the 
vacuum rubber tubing as the operation may require. 
(4) Plug the line cord into the electric outlet. Be certain that the 
current is the same as specified on the nameplate. 
(5) The apparatus is then ready for use. 
h. Sorenson Model. (1) Attach the silk pressure tubing to the 
positive pressure outlet of the pump if the apparatus is to be used for 
spraying. 
(2) Connect the short rubber tubing on the suction purifier to the male 
fitting on the suction bottle if the apparatus is to be used for suction. 
Caution: This unit must be assembled so that suction from the pump 
goes through the short-angle tube to the vacuum bottle, and through the 
long-angle tube to the patient. 
(3) The Yankauer suction tube or the Poole’s abdominal suction tube 
may be slipped into the end of the vacuum rubber tubing as the operation 
may require. 
(4) Plug the line cord into the electric outlet. Be certain that the 
current is the same as specified on the nameplate. 
(5) The apparatus is then ready for use. 
c. Sklar Model. (1) Attach the silk pressure tubing to the positive 
pressure outlet of the pump if the apparatus is to be used for spraying. 
(2) Connect the rubber tubing to the short-angle tube if the apparatus 
is to be used for suction. 
Caution: This unit must be assembled so that suction from the pump 
goes through the short-angle tube to the vacuum bottle, and through the 
long-angle tube to the patient. 
(3) The Yankauer suction tube or the Poole’s abdominal suction tube 
may be slipped into the end of the vacuum rubber tubing as the operation 
may require. 
(4) Plug the line cord into the electric outlet. Be certain that the 
current is the same as specified on the base nameplate. 
(5) The apparatus is then ready for use. 10 
Section VI. CONTROLS AND INSTRUMENTS 
10. Controls 
a. Line switch. Each model has a single pole “ON” and “OFF” 
switch attached to the line cord. 
b. Regulating valve. A regulating valve is located on the suction 
side of the pump and is used to regulate the amount of vacuum to the 
vacuum bottles. 
c. Thumb cut-off. A cut-off valve is located at the end of the silk 
pressure tubing and is a means of regulating the pressure for spraying. 
II. Instruments (Vacuum Gauge) 
A vacuum gauge is located on the vacuum side of the pump and indicates 
negative pressure only. 
Section VII. 
OPERATION 
12. General 
The operation of the suction apparatus, portable, electric is left to the 
discretion of the medical officer in charge; however, the following pro- 
cedure is suggested. 
a. Prestarting instructions. (1) Check all hose attachments and 
make sure they are tight, then make certain that rubber stoppers are firmly 
inserted in both vacuum bottles and that the bottles are connected in 
series. 
(2) Before operating the apparatus for the first time in any building, 
make sure that the electric current is the same as that specified on the 
nameplate. 
(3) Turn the regulating valve control knob completely in. 
(4) Lubricate the compressor. (See par. 16.) 
h. Starting instructions. To start the suction apparatus proceed 
as follows: 
(1) Insert the male plug on the line cord into the power source outlet. 
(2) Turn the line cord switch to the “ON” position. 
c. During operation instructions. (1) It is not necessary to 
change the position of the regulating valve control knob except in certain 
cases, such as sinus drainage, where high suction is dangerous. 
(2) The vacuum gauge will not indicate until a negative pressure is 
created. This vacuum is accomplished by closing the rubber vacuum tub- 
ing leading to the vacuum bottle. When this tubing is fully closed and the regulating valve turned in all the way, the vacuum gauge should 
register 20 inches. 
(3) The vacuum bottles should not be filled above the caution fill line 
or fluid will enter the compressor. 
13. Using Negative Pressure (Vacuum) 
a. Negative pressure is used for sucking blood from body cavities and 
for removing blood and other fluids during an operation. Two 32-ounce 
vacuum bottles connected by rubber tubing in series are used. These 
bottles may be used together or individually, each independent of the 
other. To operate the bottles individually, interchange the rubber tubing 
connecting them, 
b. Use the Poole abdominal suction tube as follows; slip it into the end 
of the rubber suction tubing. This tube is used for aspirating and remains 
stationary during use. 
c. Use the Yankauer suction tube as follows: slip it into the end of 
the rubber suction tubing. Hold the tube in the hand while removing 
blood or other fluids during surgery. 
14. Using Positive Pressure (Spraying) 
Use the silk pressure tubing for spraying fluids by attaching the inlet 
thumb cut-off to a standard spray bottle. Regulate the pressure by 
placing the thumb or finger over the opening in the thumb cut-off. PART THREE 
MAINTENANCE INSTRUCTIONS 
Section VIII. GENERAL 
15. Scope 
Part Three contains information for first and second echelon maintenance. 
It contains information needed for service, as well as description of 
major units and their function in relation to other components of the 
equipment. 
Section IX. LUBRICATION 
16. After 5 Hours of Operation 
Fill the oil reservoir of the compressor with Oil, lubricating, preserva- 
tive, medium, PM, after every 5 hours of operation. 
17. After 96 Hours of Operation 
Place six drops of Oil, lubricating, preservative, medium, PM, in oil 
cup of the motor. 
Section X. PREVENTIVE MAINTENANCE SERVICES 
18. Operator Maintenance (first echelon) 
a. Before operation. (1) Clean motor if necessary. (See par. 24g.) 
(2) Lubricate compressor if necessary. (See par. 16.) 
b. During operation. (1) Observe level of liquid in vacuum bottles. 
Empty if necessary. 
(2) Clean the compressor if any fluid gets into it during operation. 
(See pars. 22 and 23.) 
c. After operation. (1) Clean base and bottle supports. (See par. 
24a and h.) 
(2) Clean the inside and outside of the case. (See par. 24b.) 
(3) Clean the silk pressure tubing. (See par. 24c.) 13 
(4) Clean the rubber tubing which runs from the vacuum bottle to the 
patient. (See 24d.) 
(5) Disassemble and clean the Yankauer suction tube and Poole suc- 
tion tube. (See par. 24e and f.) 
(6) The motor must be kept clean and turned ofif when not in use. 
(See par. 24g.) 
19. Organizational Maintenance (second echelon) 
a. Monthly. (1) Check to see that filters are clean. Replace when- 
ever oil or discoloration appears. 
(2) Check for proper operation of the unit. 
(3) Check to see if compressor is clean. Clean if necessary, (See 
pars. 22 and 23.) 
Section XL TROUBLE SHOOTING 
20. Motor Fails to Operate 
Possible causes Possible remedies 
a. Line cable improperly a. Plug line cable in properly. 
plugged into supply line. 
b. Defective line plug. b. Check plug. Replace if neces- 
sary. 
c. No voltage at source of sup- c. Check source of supply. 
ply. 
d. Damaged or broken wires. d. Repair or refer to higher 
echelon. 
e. Motor coils burned out. e. Refer to higher echelon. 
f. Improper current supply. f. Check nameplate for proper 
current supply. 
21. Lack of Pressure During Operation 
Possible causes Possible remedies 
a. Air leaks at connections. a. Tighten all hose connections 
and rubber bottle stoppers. 
b. Fluid in compressor unit. h. Clean. (See pars. 22 and 23.) 
c. Bronze compressor slides not c. Replace properly in slots of the 
in proper order. compressor assembly. (See 
pars. 22 and 23.) 
d. Defective hoses. d. Replace hoses. 14 
Section XII. MAINTENANCE OPERATIONS 
22. Cleaning Gomco Compressor 
a. Without dismantling after a small quantity of fluid has 
OVERFLOWED INTO THE COMPRESSOR AND THE COMPRESSOR HAS NOT 
ceased to operate. (1) Remove the two filter covers. 
(2) Allow a teaspoonful of Solvent, dry cleaning to be sucked into the 
suction side. 
(3) After all dirty oil and solvent has been expelled, permit a small 
amount of OIL, lubricating, preservative, medium, PM, to be sucked into 
the suction side. 
(4) The old felt filters must be replaced with new ones. 
h By dismantling. (1) Thoroughly clean the control bar and air 
line. (See fig. 6 and par. 25.) 
1. Control Bar Mounting Screws. 
2. Control Bar. 
3. Vacuum Gauge. 
4. Metal Air Line. 
5. Valve Spring. 
6. Valve Ball Check. 
7. Valve Screw. 
8. Valve Check Nut. 
9. Valve Control Knob. 
pigure 6. Exploded view of control bar and vacuum gauge assembly, Gomco model. 15 
(2) Remove the faceplate screws and then take off the compressor 
faceplate. (See fig. 7(11).) 
1. Pump Body. 
2. 3R00808 Filter, Felt: 
3. Filter Retaining Ring 
4. Filter Gasket. 
5. Filter Cover. 
6. Cover Screws. 
7. Pump Rotor Slides. 
8. Pump Rotor. 
9. Pump Oil Well Screw. 
10. Pump Oil Well Washer. 
11. Pump Cover. 
12. Cover Screws. 
Fiqure 7. Exploded view of compressor assembly, Gornco model. 
(3) Withdraw the rotor (fig. 7 (8)), by inserting two of the face- 
plate screws into the two threaded holes in the rotor and then screwing 
them in for about two or three turns. This will provide a means of pull- 
ing out the rotor. 
(4) Pull out evenly and gently on the two screws. Observe the posi- 
tion of the slides (fig. 7 (7)) and the rotor. 
Caution: The slides must be inserted carefully into exactly the same 
slots from which they were taken. They will not fit closely enough for 
operation in any but their original slots. The rotor must be replaced 
in the same position as it was before removal. Do not scratch or nick 
the surfaces of the compressor parts or poor operation will result. 
(5) Clean all parts thoroughly with ether or Solvent, dry cleaning. 16 
(6) Dry completely with a soft cloth. 
(7) Wipe the rotor with OIL, lubricating, preservative, medium, 
PM, before placing back on shaft. 
(8) Reassemble. (See CAUTION, par. 226(4).) 
23. Cleaning Sorenson and Sklar Compressors 
a. Without dismantling after a small quantity of fluid has 
OVERFLOWED INTO THE COMPRESSOR AND THE COMPRESSOR HAS NOT 
ceased to operate. (1) Remove the two purifiers. 
(2) Allow a teaspoonful of oil to be sucked into the suction fitting 
and expelled from the pressure fitting. 
(3) Take the purifiers apart, clean them thoroughly with soap and 
water and dry. 
(4) Replace the old gauze with fresh gauze (consists of approxi- 
mately 30 inches of 2-inch gauze bandage made into a roll). Do not 
roll gauze tightly. 
(5) Replace the rubber washers and make sure the purifiers are tight. 
b. By dismantling. (1) Remove the five faceplate screws and the 
faceplate of the compressor. 
(2) Remove the rotor and the slides, observing their position. 
Caution: The slides must be inserted carefully into exactly the same 
slots from which they were taken. They will not fit closely enough for 
operation in any but their original slots. The rotor must be replaced 
in the same position as it was before removal. Do not scratch or nick 
the surfaces of the compressor parts or poor operation will result. 
(3) Clean the entire housing inside and out, and all other parts with 
ether or Solvent, dry cleaning. 
(4) Dry thoroughly. 
(5) Replace all parts. There are no gaskets to be replaced. (See 
CAUTION, par. 23b {2).) 
(6) Put the faceplate back and tighten the screws evenly into the 
plate. Do not tighten one screw tighter than the others or leaks will 
occur. 
(7) Clean all rubber tubing and the bottle top long-angle and short- 
angle tubes. 
(8) Dry thoroughly and replace the tubing. 
24. Cleaning and Sterilizing Component Parts 
a. Base and bottle supports. The base and bottle Supports must 
be kept clean; blood or mucous must be removed after afiy use of the 
equipment. Wash thoroughly whenever necessary with soap and warm 
water. 17 
h. Case. The case must be kept clean inside and outside. Wash 
whenever necessary with soap and water. 
c. Silk pressure tubing. The silk pressure tubing should be flushed 
after use with clear warm soapy water. 
d. Rubber tubing. The rubber tubing which runs from the vacuum 
bottle to the place of use must be cleaned thoroughly after use. To clean, 
remove tubing from fittings and clean thoroughly in warm (not hot) 
water; dry completely. (See TM 8-611.) 
e. Yankauer suction tube. The Yankauer suction tube must be 
taken apart and cleaned thoroughly after using. To do this, unscrew the 
tip and clean with green soap and hot water; then sterilize. (See TM 8- 
611.) 
f. Poole abdominal suction tube. The Poole abdominal suction 
tube must be taken apart and cleaned thoroughly after using. Unscrew 
shield and clean with green soap and hot water; then sterilize. (See 
TM 8-611.) 
g. Motor. Clean the motor cover with a clean soft rag. 
h. Vacuum bottles. The vacuum bottles should not be allowed to 
fill past the caution fill line or fluid will enter the compressor. They may 
be cleaned with Acetone, Medical Department Item No. 1003000 or soap 
and water, then dried. 
25. Cleaning of Control Bar and Air Line, Gomco Model 
If fluid has overflowed into the compressor, the control bar and the air 
line of the Gomco Model must also be cleaned. Clean as follows: 
a. Remove the rubber tube and clean it with warm water and dry 
thoroughly. 
b. Unscrew the compression nut holding the air line to the control bar. 
c. Remove the control bar from the motor by removing the two screws. 
d. Remove the air line from the pump by unscrewing the compression 
nut at the pump. Clean with water and dry thoroughly, 
e. Remove the regulating valve parts (fig. 6), clean with water and dry 
thoroughly. 
f. Reassemble, being certain to reassemble the regulating valve in the 
order shown in figure 6 (5), (6), (7), (8), and (9). 
26. Replacing Felt Filters, Gomco Model 
Whenever fluid overflows into the compressor or when the filters become 
oil soaked, they must be replaced. To replace filters: 
a. Remove the three screws and the filter cover. (See fig. 7 (5).) 
h. Remove the gasket, filter ring and felt washers. 
c. Replace with new filters and reassemble. 18 
27. Repacking Filters of Sorenson and Sklar Models 
a. Remove the hose by unscrewing the hose coupling. 
h. Unscrew the top cap on the filters and remove the filter chamber 
glass. 
c. Remove the soiled filter. 
d. Replace the soiled filter on the suction side by winding about 30 
inches of 2-inch gauze bandage loosely around the metal stem of the filter. 
e. Replace the soiled filter on the pressure side of the Sorenson model 
as described in paragraph 27d. The Sklar model has a ventilating disk 
which separates the upper and lower sections of the filter. To repack, 
wind about 30 inches of 1-inch gauze bandage loosely around tbe bottom 
of the filter stem, then replace the ventilating disk and wind about 30 
inches of 1-inch gauze at top end of filter stem. 
f. Replace rubber washers and filter cap. APPENDIX 
DISASSEMBLING AND PACKING 
Disassemble and pack all three models of the suction apparatus as follows: 
1. Remove the line plug from the electric outlet. 
2. Remove all accessories and place them in the accessories compartment 
in the cover of the case. 
3. Put the cover in place, fasten the hasps, and buckle the strap tightly 
around the case. The suction apparatus is then completely packed. 
4. It may be crated if necessary, using a strong wooden box and pack- 
ing materials to keep the apparatus from shifting during shipment. INDEX 
Paragraph Page 
Accessories 6 5 
Assembling 9 9 
Cleaning of control bar and air line, Gomco Model 25 17 
Cleaning the Gomco compressor 22 14 
Cleaning Sorenson and Sklar compressors 23 16 
Cleaning and sterilizing component parts 24 16 
Controls 10 IQ 
Data 4 5 
Description 3 5 
Disassembling and packing App 19 
Filters, repacking on Sorenson and Sklar models 27 18 
Filters, replacing, Gomco model 26 17 
Instruments 11 ]Q 
Lack of pressure during operation 21 13 
Lubrication 16-17 12 
Maintenance operations 22-27 14, 18 
Manufacturers 5 ’ 5 
Motor fails to operate 20 13 
Operation 12-14 10,11 
Operation using negative pressure (vacuum) 13 n 
Operation using positive pressure (spraying) 14 H 
Operator maintenance lg 12 
Organizational maintenance 19 13 
Packing App 19 
Preventive maintenance services 18-19 12, 13 
Records 2 5 
Replacing felt filters, Gomco model 26 17 
Repacking filters of Sorenson and Sklar models 27 18 
Service upon receipt of equipment 8-9 7 9 
Spraying 14 \i 
Sterilizing component parts 24 16 
Tools and accessories 5 5 
Trouble shooting 20-21 13 
Unpacking g 7 
Vacuum 13 H