Gomco 270, 2701 Operation, Maintenance And Service Manual

INDEX

to

GENERAL INFORMATiON

2.0 SPECIFICATIONS

3.0 SET-UP

4.0 OPERATING PROCEDURE

5.0 OPERATING PRINCIPLE

6.0 MAINTENANCE AND SERVICE

7.0 ILLUSTRATIONS

8.0

TROUBLESHOOTING

9.0 REPLACEMENT PARTS

LIST

1.0 GENERAL

1.1 Purpose:
Gomco
suction for specialized
and fistula drainage following prostatectomy. The suction system includes two preset
drainage levels of 90mm and 120mm of mercury vacuum.

1.2

Features — Model

Supplied

1. One (1) 1200 ml glass collection container

2.

One (1) wire formed

3.

Bacteria

4.

One disposable tubing

5.

Compact

1.2.1

Overflow

INFORMATION:

Models 270 and 2701 are portable drainage pumps designed to assure gentle

uses

as gastric lavage, abdominal decompression, doudenal

270:

with

model 270 as standard equipment are:

with

overflow protection cap

assembly.

bottle

filter

to prevent fluid and aerosol contamination.

PVC

tubing.

case

with

lighted selector switch, pump cycle

plug.

Protection:

The 1200 ml coiiection
and

float

assembly (See
predetermined
cap

and float.

level,

the vacuum supply to the collection

holder.

pacltage

bottle

assembly supplied

Illustration

containing 2-six

No. 4). When collected patient fluids reach a

foot

iengths of clear flexible

light

and hospital grade

with

this pump includes a cap

bottle

is shut off by the

1.2.2

Bacteria

The high efficiency bacteria
aerosoi
hydrophobic, microporous membrane which filters air
(0.3 micron particles in air), while
aerosoi
pump contamination in the
overflow from reaching the pump.

1.3

Features — iViodel

Supplied

1. One 1100 ml disposable collection container

2.

One wire formed container holder.

3.

Bacteria

4.

One disposable tubing

5.

Compact

1.3.1

with

PVC

tubing.

plug.

Overfiow

The 1100 ml disposable collection container supplied
multi-stage
(acts as overflow protection), (2) giass prefilter allows
laser/electrocautery

Fiiter:

filter

is custom engineered to prevent fluid and

contamination of portable suction

blocl^ing

contaminants. The Gomco high efficiency

case

of canister overflow as it helps prevent the

2701:

modei 2701 as standard equipment are:

filter.

case

with

lighted selector switch, pump cycle

protection:

filter

(1) hydrophobic membrane stops flow of aqueous solutions

applications.

paci<age

containing 2-six

units.

the

floW

with

This

filter

features a

with

maximum efficiency

of aqueous fluids and

fiiter

protects against suction

overflow protection cap.

foot

lengths of clear flexible

light

and hospita! grade

with

this pump includes a

filter

to handle most

1.3.2

Bacteria

Fiiter:

The high efficiency bacteria
aerosol
hydrophobic, microporous membrane which filters air
(0.3 micron particles in air), while
aerosol
pump contamination in the
overfiov\(

contamination of portable suction units. This

contaminants. The Gomco high efficiency

from reaching the pump.

filter

is custom engineered to prevent fluid and

bloci^ing

case

of canister overflow as it helps prevent the

'"\

the flow of aqueous

filter

filter

features a

with

maximum efficiency

flujds

protects against suction

and

2.0 SPECIFICATIONS:

2.1 Vacuum:
* At 90mm setting: 90mm to 99mm Hg.

at 120mm setting: 120mm to 132mm Hg.

2.2

Flow

Rate

(Air):

At 90mm setting: .25 iiters/minute
At 120mm setting: .30 liters/minute

2.3 Electrical

115

volts 50/60 Hz. (1.5 amps max.)

230 volts 50/60 Hz. (1.3 amps max.)

2.4 Pump Cylinder:

155

to 160

2.5 Dimensions:

Case

Only - (D) 8" x (w) 8" x (H) 7"

2.6

2.7

*

NOTE;

Overall

Weight:

Shipping
Net - 10 pounds

Duty:

Continuous

Vacuum should be measured after the pump has been running for 15 minutes to normalize the

pump cylinder temperature.

-(D) 8" x

Requirements:

OHMS

-15

resistance

(V\/)

pounds

11" x (H) 7"

3.0 SET-UP:

3.1 Collection

(See

Illustration No. 4)

1. Check the bottie top edges for nicks. If the bottle top is nicked, it will not

2.

Check

3.

Check

4.

Screw the cover assembly securely onto the bottle, making sure

5.

Place

6. Connect one length of tubing, enclosed in the tubing package, to the bacteria

7. Connect the other length of tubing to the long bent metal tube of the cap

3.2 Collection

1.

Make sure

2.

Place

3.

Place

4.

Connect one length of

5.

Connect't'he

Bottle

seals.

filter

pump".

assembly.

Bottle

to snap lid to bottle.

filter

Assembly — Glass

that

the cap gasket Is properly positioned inside the cover.

that

the float moves freely.

the bottle assembly into the wire form bottle holder.

and to the vertical

Assembly — DCU:

filter

shut-off is in place in under side of lid.

bottle on a

bottle into wire form bottle holder.

and to the vertical

flat

other length of tubing to the elbow

fitting

surface and lay cap assembly on bottle.

tubing.-enclosed

fitting

Bottle:

on the bottle cap and float assembiy marked "to

in the tubing package, to the bacteria

of the cap marked vacuum.

marked

that

Push

"patient".

seal.

the gasket

down on cap

4.0 OPERATING PROCEDURE:

{See Illustration No. 3)

1.

Tiie

2.

Plug

3.

Be sure the collection bottle is assembled properly, see

4.

Push

5.

During operation, the amber "pump

6. Prior to using your pump on a patient, insure the vacuum by submerging the end of the

7. The pump is now ready for use.

8. During patient use, the level of the collected contents within the collection bottle

selector switcli stiouid be in the center "off" position.

the line cord into a grounded electrical outlet, making sure

voltage as indicated on the

ing from the bottle to the bacteria

the selector switch on the

120mm Hg and down for 90mm Hg. The red light within the switch will remain lit in-

dicating the

intermittent
vacuum

patient tube into a container of water. Aspiration of water into the collection bottle
should

should

unit

is on.

pumping action. After four or five minutes of operation, the selected

levei will be reached.

be noticed.

be frequently checked and emptied.

unit

nameplate.

filter

front

3,0,

is dry.

control panel to the desired vacuum range, up for

cycle"

lamp will blink intermittently to indicate the

and

that

it is the same

that

the length of tub-

5.0 OPERATING

The

mild negative pressure of this
within an airtight cylinder. The expansion and contraction of the air in the cylinder is
trolled by pressure and suction valves and a solid state timing device to produce a mild
tion. Contained within the air
resistance
of 2 to 3.5
timer. The resistance wire heats the air within the cylinder and expanded air is expelled into
atmosphere through the pressure (check) valve. The amber pump cycle lamp in the

trol

panel (See Illustration No. 3) is lit during this time. During the "off" time, voltage to the
heating element is interrupted by the solid state timer for a period of 19 to 22
pressure
contracts causing a partial vacuum which opens the suction (check) valve. Air from within the

collection bottle is drawn into the cylinder to
pump cycle lamp in the

6.0

IVIAINTENANCE

6.1 Pump:

valve

The
event flooding of the pump occurs, the element in the pump cylinder and the valves will
need
control circuit.

PRINCIPLE:

unit

is induced by the expansion and contraction of air

tight

pump cylinder is a heating element wound

wire. During the "on" time 120 volts is applied to the heating element for a period

seconds,

depending upon the selected vacuum range, controlled by the solid state

closes

during this period and the remaining air. within the cylinder cools and

fill

the vacuum. During this "off" time, the amber

front

control panel remains off and this is when suction actually occurs.

with

a

front

seconds.

AND SERVICE

pump of this

replacing. Attempting to continue to run a flooded pump may cause damage to the

unit

has no moving parts and therefore requires no maintenance. In the

con-

suc-

con-

The

6.2 Pump Cylinder

1. Disconnect the

2.

Remove the

3.

Disconnect the valve and manifold assembly from the cylinder tubing connector.

4.

Remove the power cord ground wire from the

5.

Remove the cylinder ground wire from the ground screw.

6. Remove the

7. Unsolder the two cylmder wires at the cylinder cover terminals

8.

Install the new cylinder in reverse order.

Replacement:

unit

from Its power source.

case

top cover by removing the four self tapping screws.

two

cylinder mounting screws from the bottom side of the

case

ground screw.

anjd

case.

remove.

Air

Tight

Cylinder

To Atmosphere

Pressure (Check)

Valve

Suction (Check)

Valve

Bacteria Filter

SUCTION

SYSTEM

Collection

Bottle

6.2.1

Element

Replacement

1. Remove pump cylinder as described

2.

Remove the six slotted head machine screws fastening the cylinder cover to the

cylinder.

3.

Tap the edge of the pump cover

4.

Lift the cover off

5.

Remove the two eiement leads running

them from the top side of the cover. Pry-up the two small tabs securing the wire
to the terminals. The center terminal holes should be clear of solder.

6. Loosen the hex nut locking the element rod to the cover and unscrew the element
from the cover.

7. Screw the new element into cover center hole approximately flush
surface

8.

Pass

the small terminal tabs and bend both tabs down to secure the wires. Solder the
two leads and solder closed the center terminal holes.

9.

Check resistance to make sure of proper contact — 155 to 160

10.

Piace

sealant
prevent any leaks.

11.

Insert the element into the cylinder and place the cover onto the cylinder while

aligning screw holes. Replace the six cover mounting screws and tighten. Note —
care

damage

12.

Install cylinder as described in pump cylinder

of the cover. Tighten the element lock nut against cover.

the two element leads

gasket to the seal surface of the cylinder. Apply a small drop of RTV

on top side of the cylinder cover at the center element rod hole to

must be taken when handling the element and cover assembly to prevent

to the fragile element.

(See Illustration No. 6)

In

with

a piastic mallet to break it free.

with

heating element attached.

thru

the cover terminals and wind each lead around

6.2.

thru

the cover terminals by unsoldering

with

OHMS.

replacement—6.2.

the top

6.3 Suction and Pressure Valves:
The

check valves used in this

(See

Illustration No. 8)

6.3.1 Suction and Pressure

6.4

Bacteria

The
of the air flow rate is noticed. It must be replaced in the event fluids have entered it, such
as

1. Disconnect the

2.

Remove the

3.

Disconnect the white silicone rubber tubing from the pump cylinder tubing

connector.

4.

Disconnect the rubber tubing from the suction valve.

5.

Unscrew both valves from the valve manifold.

6. Lightly lubricate the threads of the new valves
equivalent and screw the valves into the manifold.
when replacing valves to prevent thread damage due to cross threading and

overtightening. Valves should only be installed finger

7. Install the valve and manifold assembly in reverse order.

Filter:

bacteria

in collection bottle overflow.

filter

should be replaced after one month of patient use or when a reduction

unit

case

unit

are factory

Valve

top cover by removing the four self tapping screws.

Replacement:

from its power source.

sealed,

therefore require no maintenance

with

petroleum jelly or

Note:

Care

tight.

must be taken

6.4.1

Bacteria

Filler

Repiacement:

1. Unscrew the
No.

1 or No. 2) by hand turning in a

2.

Screw a new

clockwise

Note:

Care

damage due to cross threading and overtightening.

filter

from the vacuum and

counter-cloci<wise

filter

into

the vacuum and

direction finger

must be taken when replacing the

tight.

filter

filter

connection (See

direction.

connection by turning in a

filter

to prevent thread

Illustration

6,5 Glass Collection

1. Remove the cap assembly from the bottle.

2.

Dispose of drainage fluids and materials in the bottle.

3.

4.

6.6

Control

The pump cycles are controlled by a solid state printed circuit board (See

Shts. 1 thru
The timing is factory set and needs no adjustment.

Soak

Autoclave at 250° F for 15 minutes following the autoclave manufacturer's recom-

The SF 120A-774 is an On/Off recycling timer which provides a fixed "Off" time of 19 to 22
seconds
The 2.1 to 2.25 second "On" time can be selected by shorting terminals 4 and 5 together.
When power is applied, the "On" time occurs

A

9V power supply is supplied by
frequency noise filtering. C6 is the
through D1, and

The circuit timing is accomplished by using a MC14541 programmable timer, IC1. This IC
has a built
and 3. The pin 3 connection used is determined by
tions of this switch

During the "Off" time interval, P3, R7,

These
The longer "On" time timing components are P2, R6,

high signal on pin 12 of
by P1 and R5 by applying a high signal on pin 13 of
resistor R14, a zero OHM resistor, is connected between pin 5 of IC2 and common during
test. This prevents the timer from going
been

calibrated. This resistor is then removed.

The

output
gate dive to the SCR is controlled by
sistor Q2 is off. and gate current to
"On"

state. When pin 8 of

Ql

to common. This provides the "Off"

IC1 is programmed by the connection of pin 12 and 13 either a high or low state. For this
circuit the IC is programmed to divide the oscillator frequency by 1024.
of 1C1 will change state in one half of
calculate the oscillator frequency. Therefore, the oscillator frequency measured at pin 1 of

ICI

should be 24.98 Hz for the "Off" time, 143.22 Hz for the long "On"

for

the short "On" time.

the

parts

with

mended procedure.

Caution:
ethylene oxide gas. Follow manufacturer's direction for recommended procedure.

Circuit:

5 for schematic and parts

Control

and a selectable "On" time of either 3.4 to 3.75 seconds or 2.1 to 2.25

in oscillator chip whose timing components are connected between pins 1, 2,

are selected by a high signal on pin 6 of

of the timer

Bottle

bottle

a nylon bristle brush, rinse thoroughly

Do not flash autoclave the glass collection bottle. If desired, sterilize

Rl.

and Cap Assembly

and cap assembly in a warm detergent solution. Wash all the

Circuit

Zl

that

Description

Dl,

filter

is the regulating zener diode.

are turned on, determine the timing components which are

102,

When a shorter "On" time is desired, P2, and R6 are parallel

Is

connected through a

Ql

101

is high, transistor

Steriiization:

with

water and aerate.

Illustration

list)

or Timer (See

(PN-2311)

first.

Rl,

C6, C7,

capacitor for the Vz wave voltage supplied

Rll,

and

into

R2.

Q2, R4, and pin 8 of

is supplied to

time.

that

number of counts, the number of 512 is used to

08,

02

102.

the "Off" time

full

Q2

Illustration

Illustration

and

Zl.

102, a MC4016

comprise the timing components.

R12,

and C3. These are selected by a

102.

Since

until

wave bridge, BR1, and SCR.

01

via R2. The timer is then In the

Is

"On", shorting the gate current of

No, 7A).

No. 7

07

and

08

are used for high

bilateral switch. The

"On" time is relatively short,

both "On" times have

ICI.

When pin 8 is low, tran-

Since

time,

the Q

and 227.56 Hz

No. 7)

seconds.

used.

01.

The

output

with

sec-