Maintenance - NSK PTL-CL-LED Manual

4. Maintenance

After each use, clean the surface of the coupling with brush etc. ( Do not use metal brush ) , and
wipe it with the cotton moist with disinfecting alcohol.
This coupling can not be Autoclave sterilization.
This coupling can not be cleaned and disinfected with a Thermo-Disinfector.
CAUTION
·Do not wipe with, or clean or immerse in, high acid water or sterilizing solutions.
·Do not connect or disconnect the hose or handpiece until the drive motor has
completely stopped.
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5. Non-Retraction Valve
A Non-Retraction Valve is equipped in the Coupling Joint, which shuts off the water retraction
right at the handpiece head, to prevent oral fluids sucked into the water line. ( Fig. 5 )
To replace the valve, remove the back-end gasket. Pull and remove the water tube, and
replace the Non-Retraction Valve.
Water Tube
PTL-CL-LED III
Non-Retraction Valve
Gasket
Fig. 5
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