The Gomco Models 6036 and 6037 are mobile, constant, and intermittent suction pumps designed for medical applications. These units provide two distinct types of vacuum service: constant suction and intermittent suction, catering to a range of patient needs.

Function Description:

The primary function of these Gomco pumps is to generate vacuum for medical suction.

Constant Suction: This mode offers a continuous vacuum, adjustable from 0 to 200 mm of mercury (Hg), with a maximum airflow of 25 liters per minute (lpm). It is suitable for applications requiring steady suction.
Intermittent Suction: For milder suction requirements, this mode also provides a vacuum range of 0 to 200 mm Hg, but with a lower maximum airflow of 4 lpm. A key feature of intermittent suction is the user's ability to adjust the "on" time (duration of applied vacuum) from 1 to 90 seconds. The "off" time, during which the unit vents to atmosphere, is fixed at 12 seconds.

The core of the pump's operation lies in a diaphragm pump mechanism. Negative and positive pressures are created by the reciprocating motion of a diaphragm inside the pump head. Pressure and suction flapper valves regulate these pressures. During the "up stroke," the pressure valve opens, allowing airflow through the exhaust or pressure port. Conversely, during the "down stroke," the pressure valve closes, and the suction valve opens, drawing a vacuum or creating negative pressure at the suction side.

Important Technical Specifications:

Vacuum Range: 0 to 200 mm Hg for both constant and intermittent modes.
Flow Rate (Open):
- Constant: 20 lpm
- Intermittent: 4 lpm
Electrical Requirements: 115 volts, 60 Hz (2.0 amps). A 230-volt unit is also available.
Motor and Pump Description: 4-pole, permanent split capacitor motor, direct drive diaphragm pump.
Pump (Only) Specifications:
- Vacuum: 22 inch Hg minimum
- Flow: 28 lpm
Dimensions: (H) 33 in. X (D) 17 in. X (W) 23 in.
Weight:
- Shipping: 78 Pounds
- Net: 62 Pounds
Duty: Continuous (24 hours).

Usage Features:

Both models are designed for ease of use and mobility in a hospital or clinical setting.

Mobile Design: Compact carts with non-marking casters allow for easy movement.
Work Surface: Stainless steel top work surfaces are easy to clean, promoting hygiene.
Control Panel: Features an illuminated on-off switch, lamps to indicate constant or intermittent service, an "on" time control knob (for intermittent mode), a vacuum gauge, and a vacuum regulator.
Hospital Grade Plug: Ensures proper grounding and safety in medical environments.
Collection Bottles:
- Model 6036: Includes a 600 ml glass collection bottle for constant suction and a 2800 ml glass collection bottle with an overflow protection cap assembly for intermittent suction.
- Model 6037: Features an 1100 ml disposable collection container with overflow protection cap for constant suction and a 2100 ml disposable collection container with overflow protection cap for intermittent suction.
Overflow Protection: The Cap and Float Assembly in the collection bottles automatically shuts off the vacuum supply when collected fluids reach the maximum fill level, preventing overflow into the pump.
Tubing: Each unit comes with two disposable tubing packages, each containing 15-inch and 72-inch lengths of clean 1/4 inch I.D. clear flexible PVC tubing.
Bacterial Filters: High-efficiency bacterial filters are custom-engineered to prevent fluid and aerosol contamination. These hydrophobic, micro-porous membranes filter air with maximum efficiency (0.3 micron particles) while blocking aqueous fluids and aerosol contaminants. They protect the suction pump from contamination in case of canister overflow.

Maintenance Features:

Regular maintenance is crucial for the longevity and proper functioning of the Gomco pumps.

Pump Lubrication: The pump and motor are permanently lubricated and do not require oiling or greasing. Users are explicitly warned against lubricating any parts with oil, grease, or petroleum products.
Pump Maintenance (Air Filters and Gasket):
- The air filters and gasket should be checked or replaced at least once a year. There are two pump heads, and both should be maintained simultaneously.
- Replacement involves removing four phillips head screws from the top cover, replacing the filters, and cleaning or replacing the gasket.
Valve Replacement:
- Requires removing four socket head machine screws holding the pump head. Note any shims for proper replacement.
- The stainless steel inlet and outlet valves are interchangeable. Proper positioning of the valve holder (with "X" toward the inlet of the air chamber) is critical.
- Socket head screws should be tightened to 90-100 inch pounds.
Diaphragm Replacement:
- Involves removing the pump head, then two phillips head machine screws from the diaphragm retainer plate.
- The new diaphragm can fit in any position on the connecting rod.
- Torque the phillips head machine screws to 30 inch pounds.
- Caution: Avoid raising burrs or nicks on screw heads, as this can damage the inlet valve.
- Warning: Users are advised not to remove the connecting rod or completely disassemble the pump. If a new Service Kit (Part No. 01-90-2526) does not resolve issues, the unit should be returned to the factory for repair.
Bacteria Filter Replacement:
- Should be replaced after one month of patient use or when a reduction in airflow is noticed. It must be replaced if fluids enter the filter due to collection bottle overflow.
- Replacement involves unscrewing the old filter and screwing in a new one, finger tight.
- Caution: Prevent thread damage from cross-threading or overtightening during installation.
Glass Collection Bottle and Cap Assembly Sterilization:
- Remove the cap assembly, dispose of drainage fluids (which are biochemical hazards and must be handled according to local and state codes).
- Soak in warm detergent solution, wash with a nylon bristle brush, rinse thoroughly, and aerate.
- Autoclave at 250° F for 15 minutes following manufacturer's recommendations.
- Caution: Do not flash autoclave glass bottles; sterilize with Ethylene Oxide Gas if desired, following manufacturer's directions.
Disposable Collection Containers: These are biochemical hazards when contaminated and must be disposed of according to local and state codes.
Solenoid Valve Replacement: If Solenoid Valve No. 2 (venting solenoid) needs replacement, ensure the brass elbow with an orifice from the old valve is transferred to the "EXH" port of the new valve for proper vacuum system function.
Vacuum Regulator Replacement:
- Involves removing the adjustment knob, stainless steel top cover, disconnecting rubber tubes, and removing the regulator from the stand.
- Separate the regulator top from the body to access the diaphragm assembly.
- When installing a new diaphragm, ensure it lies flat within its plastic housing.
- Reassemble and tighten screws alternately.
- Caution: The new diaphragm assembly is factory set for 200 mm Hg; do not alter the adjustment screw.

Troubleshooting:

The manual provides a troubleshooting guide for common issues:

Pump not running: Check power source, wiring, motor, and switch.
Low suction: Check for loose bottle cap/tubing, clogged bacterial filter, torn pump diaphragm, faulty solenoid valve, or incorrect wiring to the valve.
No timing adjustment: Check for faulty potentiometer or timer.

Warranty and Copyright:

Warranty: The seller warrants products to be free from defects in material and workmanship for one year.
Copyright: Drawings and specifications are copyrighted and limited to use by the U.S. Government for military service, training, and technical publications. Reproduction or use as a basis for manufacturing is prohibited.

Gomco 6036 - Page 14

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