7.1 Service Tools and Equipment. Ohio Medical Push-To-Set Continuous Vacuum Regulator

7/Service - Disassembly/Assembly

7.1 Service Tools and Equipment

Note: See Section 10.1 Illustrated Parts

CAUTION: Use of lubricants other than

1. Remove the four cover screws from the back of the recommended may degrade plastic or rubber regulator.

components.

2. Carefully pull the cover assembly off the back body.

3. To remove the gauge assembly, grasp the assembly and

The following items should be on hand during any service procedure.

pull straight out. The snap-fi t lens can also be removed

(if applicable) for replacement.

4. Remove actuator and PTS assembly.

5. To remove the regulator module from the cover assembly,

• Supply vacuum: 500 mm Hg/ ± 10 mmHg (67 kPa ± 1.3 kPa) & 50 LPM open air fl ow minimum

• Supply Vacuum Regulator with Gauge, 760 mm Hg

(101.3 kPa) Full Scale.

rotate the suction control knob counterclockwise until the regulator module is free.

6. Using tweezers, remove the fi lter. Replace with a new fi lter.

• Low Vacuum Calibration Gauge, 225 mm Hg (30 kPa)

Full Scale* (Ohio Medical P/N 6700-0353-800)

• High Vacuum Calibration Gauge, 760 mm Hg (101.3 kPa) Full Scale*(Ohio Medical P/N 6700-0352-800)

7. Grasp the positive pressure safety relief valve, and pull it from the back body.

8. Remove the mounting screw from the switch plate assembly and remove the switch plate and mode switch.

• 80 LPM Flowmeter

• Phillips Head Screwdriver, No. 2

• Flat Head Screwdriver, 1/4 inch

9. Low models ONLY: Grasp the vacuum relief valve and pull it from the back body.

7.2.2 Assembly

• Tweezers (Filter Remover)

• Wooden Tooth Pick (O-ring Remover)

• Phillips head screwdriver No. 1

• Stop watch or vacutimer (Ohio Medical P/N 6700-0438-

•

800)

Open end adjustable wrench

(*) Accuracy: ±1% of full scale defl ection

7.2 Continuous Vacuum Regulators (All Models)

7.2.1 Disassembly

WARNING: If the Vacuum Regulator is repaired or disassembled in any manner, the Service

Checkout Procedure must be performed before using the equipment on a patient.

WARNING: Clean and sterilize all suction equipment if contaminated before disassembly, to ensure service personnel are not exposed to hazardous contamination.

WARNING: When servicing a Low Vacuum

Regulator, perform the Vacuum Relief Valve

Adjustment and Low Vacuum Limit Setting

Procedure.

CAUTION: The gauge assembly must be handled with utmost care to retain its precision. If the lens is removed, do not rest the gauge on its face.

CAUTION: To prevent stripping the plastic threads, place the screw in the hole and turn counterclockwise until it drops into the original thread. Tighten screw.

1. Place the positive pressure safety relief valve in position and push onto the back body.

2. Low models ONLY: Lubricate the vacuum relief valve

O-ring and install it in the valve housing.

3. Lubricate switch with a thin coat of Dow 111 on the overmolded area. Place in manifold with grease side down.

4. Add detent plate making sure the fi ngers are on either side of the switch shaft and pointing down.

5. Place o-ring on post coming up through center of detent plate and set gauge stand over o-ring. Tighten down with 4 screws.

6. Place cylindrical white fi lter in corresponding cavity.

7. Screw regulator module counter-clockwise into manifold.

8. Place PTS assembly in manifold directly below regulator module.

9. Set actuator in brackets of the gauge stand and rest the loop on the top of the PTS assembly.

10. Place gear over regulator post and rest it on the actuator.

11. Place lens on gauge with single tab at the top and the two tabs at the lower portion of the gauge and set gauge into stand.

12. Place cover strip in curved slot inside case.

13. Mate the cover with the manifold. With both thumbs positioned just below the lens, press fi rmly to snap the lens in.

14. Install the 4 cover screws.

13 8700-0006-000 Rev.3

7.1 Service Tools and Equipment. Ohio Medical Push-To-Set Continuous Vacuum Regulator

Assistant Bot

7/Service - Disassembly/Assembly