A-DEC 545STA (01) PDF Document

To control the system’s air, water, and power on your A-DEC 545STA, use the master toggle. This toggle is located under the worksurface.

It is recommended to turn off the system power at the end of the work day and before longer periods of non-use to save energy and reduce the chance of air leaks.

NOTE: A-dec recommends that you perform a shock treatment on the dental unit waterlines before you use the system for the first time.

To adjust the height of the worksurface and the instrumentation arm on your A-DEC 545STA, follow these steps:

1. Lift up the instrument arm or worksurface.

2. Slide the adjustment ring to the desired position.

3. Lower the instrument arm or worksurface post until the ring is securely seated.

You can adjust the instrument holders on your A-DEC 545STA independently or as a set on both the doctor’s and assistant’s side.

1. Pull the holder, or holders, away from the touch control/handle.

2. Rotate to the desired position and release.

CAUTION: Twisting the holder without pulling it away from the adjacent one will damage the mechanism.

To operate the autoclavable syringe on your A-DEC 545STA:

To install the A-dec syringe tip, push the tip in until you feel two clicks. To produce an air/water spray, press both buttons simultaneously.

To convert the standard high-volume evacuator (HVE) and saliva ejector on your A-DEC 545STA for left-handed operation, push the control valve out of the valve body, rotate the control valve 180°, and push it back into place.

NOTE: Be sure to reinstall the valve on the same side of the valve body. Otherwise, the HVE or saliva ejector will not operate properly.

To activate a handpiece on your A-DEC 545STA, lift it from the holder. Use the foot control to perform the desired handpiece operation as described in the table below.

NOTE: On systems with a lever foot control, water coolant cannot be activated, or deactivated, from the touchscreen.

NOTE: The lever foot control wet/dry function can be reversed by a technician (change left direction to dry, right direction to wet).

Use the following process to adjust handpiece coolant atomization on your A-DEC 545STA. The air coolant knob adjusts air flow to all handpiece positions simultaneously, while each water coolant knob adjusts water flow to a single handpiece position.

CAUTION: When performing this procedure, do not attempt to completely shut off the water or air flow. The adjustment knobs are not designed to completely shut off flow and can damage the control block if you apply too much force.

1. Ensure that a bur is inserted into each handpiece you expect to adjust.

2. Withdraw a handpiece.

3. Select the air coolant icon on the touchscreen to turn off the air coolant.

4. Do one of the following:

– Disc foot control: use the touchscreen or wet/dry toggle to turn on the water coolant, then press the disc all the way down.

– Lever foot control: move the lever all the way to the left to run the handpiece at full speed with water.

5. Gently turn the water coolant adjustment knob (for the corresponding handpiece) clockwise until coolant flow stops. Then slowly turn the knob counterclockwise until water droplets are expelled from every water port on the handpiece head.

6. Release the foot control and return the handpiece to its holder.

7. Repeat steps 2 through 6 for each handpiece.

8. Lift the handpiece from the holder and press the air coolant icon on the touchscreen to turn on the air coolant.

9. Fully press the foot control.

10. Locate the air coolant adjustment knob. Adjust the air coolant until you achieve the desired atomization at the cutting surface of the bur. Counterclockwise increases flow.

11. Use the water coolant adjustment knob, as needed, to make any additional fine adjustments in water coolant output.

12. Repeat steps 8 through 11 for each handpiece.

To adjust the handpiece drive air pressure on your A-DEC 545STA, follow these steps:

WARNING: Shock hazard. When you remove or replace the covers, take care not to damage any wiring or tubing. Verify that the covers are secure after you replace them.

CAUTION: Exceeding the manufacturer’s recommended drive air pressure increases the risk of damage and may significantly decrease the life of your handpiece components. For the proper drive air pressure, see the handpiece manufacturer’s Instructions for Use.

1. Remove the 541pro delivery system covers. Locate the hole directly under the delivery system and pull the covers apart. To replace, align the covers and snap together.

2. To read the drive air pressure from the touchscreen, a handpiece must be attached to the tubing. Withdraw the handpiece.

3. On the touchscreen, select and hold the adjustment bar.

4. Scroll down to Drive Air, select Drive Air Pressure.

5. With the handpiece withdrawn, do one of the following:

– Disc foot control: flip the wet/dry toggle to dry, and press the disc all the way down.

– Lever foot control: move the lever all the way to the right.

6. Locate the corresponding drive air control stem under the delivery system control head.

7. Refer to the touchscreen while you adjust the drive air pressure to meet the handpiece manufacturer’s specifications. Turn the control stem clockwise to decrease flow and counterclockwise to increase flow.

Use the handpiece flush feature on your A-DEC 545STA to move a high volume of water through the handpiece tubing. NOTE: Flush all handpiece tubing (air and waterlines) in accordance with the regulations in your area. If no regulations exist, flush the tubing for a minimum of 20-30 seconds at the beginning of the day and after each patient.

1. Disconnect the handpieces and hold the tubing over a sink, cuspidor bowl, or basin.

2. Select the flush icon at the bottom of the touchscreen for the flush menu.

3. Use the manual or timed controls on the touchscreen to flush the tubing. The solid colored dot indicates which handpiece tubing is withdrawn.

To maintain the oil collector on your A-DEC 545STA:

1. Turn the oil collector housing key clockwise to unlock, then pull out the housing.

2. Remove and replace the old cotton gauze (use two 2″ x 2″ [51 mm x 51 mm] pads folded in half).

NOTE: Do not replace the cotton roll in the right corner of the oil collector. This is a brake muffler that rarely needs replacement.

3. Reinsert the housing and turn the key counterclockwise to lock.

The solids collector on your A-DEC 545STA helps prevent solids from entering the central vacuum system. To ensure proper suction and maintain asepsis, discard and replace the solids collector screen at least twice a week.

WARNING: Infectious waste may be present. Follow asepsis protocol to prevent cross contamination.

To replace the solids collector screen:

1. Turn off the vacuum or open the HVE control valve.

2. Remove the solids collector cap.

CAUTION: Do not empty the screen into your cuspidor. Doing so could plug the drain.

3. Remove the solids collector screen and discard according to your local regulations.

4. Insert a new screen in the solids collector and replace the cap.

NOTE: When you replace the solids collector cap, ensure that the keyed cutout faces down, or it will cut off the vacuum flow.

To clean and disinfect the HVE and saliva ejector valve body assembly on your A-DEC 545STA without disconnecting from the vacuum system:

1. Remove the vacuum tip from the HVE or saliva ejector valve body assembly. Discard disposable vacuum tips.

2. Clean the valve body assembly to remove visible soil using a disinfectant wipe or spray solution. Keep the valve body assembly wet according to the manufacturer’s recommended contact time. Repeat, if necessary, until the valve body assembly is visibly clean.

3. Disinfect the valve body assembly using a new disinfectant wipe or spray solution. Keep the valve body assembly wet according to the manufacturer’s recommended contact time.

4. Allow the valve body assembly to air dry.

5. Operate the HVE and the saliva ejector valves several times to verify that they rotate smoothly.

To routinely maintain and sterilize the HVE and saliva ejector on your A-DEC 545STA when disconnected from the vacuum system:

CAUTION: Clean the valve body assembly as soon as possible after treating each patient. Do not allow blood and debris to dry on instruments. If you cannot clean it immediately, keep the valve body assembly moist.

1. Remove the valve body assembly from the vacuum line by pulling it away from the tubing at the tailpiece.

2. Disassemble the valve body by pushing the control valve out of the valve body.

3. Clean soiled valve body components using a soft, low-lint wipe.

4. Prepare a warm (32-43°C [90-110°F]) detergent solution (neutral pH enzymatic detergent or alkaline non-enzymatic detergent), according to the manufacturer’s recommended instructions.

5. Soak soiled valve body components in the prepared detergent solution for at least one minute.

6. Remove and inspect O-rings. Discard and replace, if damaged.

7. Use a soft, nylon-bristle brush, or equivalent, to scrub the:

– Exposed surfaces of the valve body components and O-rings, while submerged, for a minimum of 30 seconds or until all visible soil has been removed.

– Interior lumen of the valve body at least three times (in and out), clearing any visible soil from brush bristles.

8. Rinse the cleaned valve body components under flowing, warm (32-43°C [90-110°F]) potable water for a minimum of 30 seconds.

9. Allow valve body components to air dry.

10. Sterilize the valve body components according to the following:

– Dynamic air-removal sterilizers: 4 minutes at 132-135°C (270-275°F)

– Gravity-displacement sterilizers: 30 minutes at 121-123°C (250-254°F)

11. Allow the load to dry for 30 minutes before removing it from the sterilizer. Ensure the valve body components are completely dry before proceeding.

CAUTION: Use only silicone lubricant when lubricating the black O-rings in A-dec instruments. Petroleum-based products will cause permanent damage to the O-rings.

12. Prior to use, lubricate O-rings with A-dec silicone lubricant, and reassemble the valve body assembly.

13. Reinstall the valve body assembly on the tubing tailpiece.

14. Operate the HVE and the saliva ejector control valves several times to verify that they rotate smoothly.

For your A-DEC 545STA, select tips that are compatible with your HVE and saliva ejector openings. Disposable HVE and saliva ejector tips are not sterilizable and should not be reused. Replace disposable HVE and saliva ejector tips after each use.

To replace the bulb in your A-DEC 545STA fiber-optic 5-hole silicone or vinyl tubing:

1. Disconnect the handpiece and quick-connector coupling from the tubing.

2. Pull back the metal handpiece nut.

3. Slide back the metal portion of the handpiece terminal (silicone tubing only).

4. Replace the bulb.

5. Reinsert the metal portion of the terminal into the plastic portion (silicone tubing only).

6. Carefully slide the handpiece nut back over terminal.

The system utilities for the A-DEC 545STA are located in the cabinet base and typically include the electrical outlet, as well as the system hookups for air, water, and vacuum. To access them, open the doors of the cabinet, then lift and remove the bottom panel.

WARNING: Shock hazard. When you remove or replace the covers, take care not to damage any wiring or tubing. Verify that the covers are secure after you replace them.

System Accessory Load

Maximum accessory load capacity: 20 lb (9.1 kg) (in addition to integrated accessories)

HVE/Saliva Ejector Tip Connections

– Standard 11 mm HVE: 11 mm (0.433″) diameter opening (for standard HVE tips)

– Large bore 15 mm HVE: 15 mm (0.591″) diameter opening (for large bore HVE tips)

– Standard 6 mm SE: 6 mm (0.236″) diameter opening (for standard SE tips)

Solids Collector Screen/Filter

Maximum mesh opening size: 0.047″ (1.194 mm) ≈ 1200 µm