DENTSPLY 28H Service Manual download pdf (Page 26)

8. Lift the protective cover from the Power Entry module.

The fuses are mounted vertically under the cover.

Use a small flat blade screwdriver and lift the fuses

from the clips.

9. Replace the fuses with the specified current rating and

voltage.

10. Replace the Power Entry module cover. Insert and

tighten the cover screw. Lower and align the heatsink

bracket and tighten the two screws with a screwdriver.

Check for proper alignment of the auxiliary Foot

Control cable connector on the back panel and that

no wires are trapped.

11. Install and tighten the two screws at the rear corners

of the Power Supply assembly.

12. Align the plastic barrier with the Bottom Housing and

fully seat. Replace the two-sided tape, if necessary, to

secure the barrier to the heatsink.

13. Reconnect the ribbon cable from the Top Cover.

Support the Top Cover on the rear of the base cabinet.

14. Align the Top Cover on the Bottom Housing and

securely fasten the six #6 x 1/2” Hi-Lo screws using a

screwdriver.

15. Plug in the power cord into the power entry module.

16. Power up the unit using the power rocker switch and

test unit operation.

17. Calibrate and final test the Cavitron

Plus™ Scaler

using the DENTSLY

Professional - Product Service

Standard Operating Procedure, PS-153.





1. If possible, plug the water supply hose into a

compressed air source (40 psi max.) and operate the

unit to discharge all water from the unit and handpiece.

2. Follow the steps above in Section A for “Top Cover

Removal”.

3. Unplug the Top Cover ribbon cable at J5 on the Power

Drive PC board and place the Top Cover to the side.

4. Remove the plastic barrier from the unit. Pull the

barrier away from the heatsink to release the two-

sided tape and lift the barrier out of the unit.

5. Unplug the 3-wire Handpiece cable from J3 on the

Power Drive PC board.

6. Carefully slide the Handpiece water tubing from the

Regulator/Water Solenoid assembly.

7. Apply slight pressure upward on the Handpiece cable

strain relief. At the same time, separate the plastic

clips and fully disengage the handpiece strain relief

and cable from the cabinet base.

8. Pass the wiring and water tubing through the Bottom

Housing opening.

9. Insert the new handpiece wire connector and water

tubing through the bottom of the cabinet base. Align

and snap the strain relief into the tabs.

10. Plug the 3-wire connector onto J3 of the Power PC

board. Route the Handpiece cable down against the

chassis.

11. Align the plastic barrier with the Bottom Housing and

fully seat. Replace the two-sided tape, if necessary, to

secure the barrier to the heatsink.

12. Route the handpiece water tubing by first creating a

counter-clockwise loop above the strain relief. Then

route the tubing along the chassis and connect it to

the water regulator/solenoid.

13. Reconnect the ribbon cable at J5 on the Power PC

Drive board. Support the Top cover to prevent

damage to cable.

14. Power up the unit, install an insert in the handpiece,

and check the scaling power and water flow. Inspect

the clear handpiece water tubing for any water leaks.

15. Calibrate and final test the Cavitron

Plus™ Scaler

using DENTSPLY

Professional - Product Service

Standard Operating Procedure, PS-153.



1. Follow the steps in Section A for “Top Cover Removal”.

2. Unplug the Top Cover ribbon cable at J5 on the Power

Drive PC board and place the Top Cover to the side.

3. Remove the plastic barrier from the unit. Pull the

barrier away from the heatsink to release the two-sided

tape and lift the barrier out of the unit.

4. Locate the BLK-WHT wire harness that is connected

to the power switch and unplug it from the Power

Supply assembly.

5. Unplug the Ground Lug at the front-right corner of the

Power Supply assembly.

6. Unplug the BLK-RED wire connector at J1 on the Power

Drive PC board.

7. Use a screwdriver and remove the two #6 x 1/2” Hi-Lo

screws at the back corners of the Power Supply

assembly.

8. Lift and slide the Power Supply assembly toward the

rear of the unit to disengage it from the front mounted

tabs and remove.

9. Inspect the cabinet base for the presence of the two

D-section support cushions. Replace if damaged or

missing.



Water Regulator/Solenoid

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 38 39

Comments to this Manuals

No comments

DENTSPLY 28H Service Manual Page 26

Comments to this Manuals

Related products and manuals for Above ground pool accessories DENTSPLY 28H