Power Supply - DENTSPLY Cavitron JET Plus Installation And Service Manual

3. Unplug the blue water hose assembly at the source
and relieve the water pressure by depressing the quick
disconnect tip in a suitable container. Disconnect the
blue water hose at the rear of the unit by fully
depressing the gray connector ring and gently pulling
out the hose.
4. Unplug the black air hose assembly at the source and
relieve the air pressure by depressing the quick
disconnect tip. Disconnect the black air hose at the
rear of the unit by fully depressing the connector ring
and gently pulling out the hose.
5. Remove the plastic barrier from the unit. Pull the
plastic barrier away from the heatsink to release the
two-sided tape and lift the barrier out of the unit.
6. Unplug the Water Regulator/Solenoid assembly at J2
on the Power Drive PC board.
7. Cut the cable tie and release the Snap-On Ferrite block
on the Water Regulator/Solenoid. Unplug the
Handpiece cable connector from the Power Drive PC
board at J3.
8. Disconnect the small clear Handpiece water tubing at
the Water Regulator/Solenoid fitting. Also disconnect
the blue tube from the Water Regulator/Solenoid to the
inlet fitting by fully depressing the gray connector ring
and gently pulling out the blue tube.
9. Use a screwdriver and remove the two #6 x 1/2" Hi-Lo
screws at the front corners of the water chassis
assembly. Then remove the #6-32 x 3/8" screw on
the Power Entry cover. Carefully lift up the water
chassis assembly.
10. Use a screwdriver and remove the two #6 x 3/8"
screws directly under the Water Regulator/Solenoid
assembly. Position the replacement Water Regulator/
Solenoid assembly over the same chassis holes and
fasten with the removed screws.
11. Lower the water chassis assembly and slide it back
under the molded tab located adjacent to the water
inlet hole. Fasten the water chassis to the Bottom
Housing using the #6 x 1/2" Hi-Lo screws. Place the
ground terminal and lockwasher under the left screw.
12. Connect the small clear Handpiece tube to the top port
of the Water Regulator/Solenoid tube.
To Clear
Handpiece
Tubing
To Water Supply Inlet -
John Guest Fitting
Rear View of Water
Regulator / Solenoid
13. Attach the Snap-On Ferrite block to the back of the
Water Regulator/Solenoid and secure it with a cable
tie. The latch for the Snap-On Ferrite block should face
downward. Plug the 3-wire connector onto J3 of the
Power Drive PC board.
14. Ensure that the Regulator/Solenoid wires, Handpiece
cable assembly, Handpiece water tubing and blue
supply tube are not trapped.
15. Use a screwdriver and fasten the Power Entry cover to
the water chassis assembly with the two 6-32 x 3/8"
screws.
16. Plug the Water Regulator/Solenoid Wire connector into
J2 on the Power Drive PC board.
24 VDC
J1
Power
Inlet
Power Drive
PCB Bracket
Assembly
17. Insert the blue water hose into the lower right-hand
hose connector in the back panel. Be sure it is fully
seated.
18. Align the plastic barrier with the Bottom Housing and
fully seat it. Replace the two-sided tape, if necessary,
to secure the barrier to the heatsink.
19. Reconnect the ribbon cable at J5 on the Power Drive
PC board. Support the Top Cover to prevent damage
to the cable.
20. Calibrate and final test the Cavitron
using DENTSPLY Professional - Product Service
Standard Operating Procedure, PS-00176.
21. Align the Top Cover on the Bottom Housing and
securely fasten the six #6 x 1/2" Hi-Lo screws using
a screwdriver.
F Power Supply
Assembly Replacement:
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 corner of the
Power Supply assembly.
39
J6
Pinch Solenoid
J3
HP
Water
Regulator/Solenoid J2
J4
Main Air Solenoid
JET Plus unit
®