Lamp Replacement; Fuse Replacement - DENTSPLY QHL75 Guia De Funcionamiento

CLEANING
The fiberoptic light probe may be autoclaved or dry heat sterilized (see manufacturer's instructions). Any cured resin
materials on the tip of the light probes should be removed (pried off) with a razor blade or sharp knife to ensure proper
curing of composite materials.
NOTE: Always protect open ends of the light probes from abrasive materials. Should polished ends
become marred, light transmission and curing will be diminished.
Disconnect the power cord from the base unit prior to cleaning.
Do not use a glutaraldahyde based solution to disinfect your unit. This could affect the
mechanical operation and damage the plastic housing.
Clean and disinfect the surfaces of the unit housings by applying an approved non-immersion type disinfectant solution*
carefully following the instructions provided by the disinfectant solution manufacturer.
*NOTE: Water based disinfectant solutions are preferred. Alcohol-based disinfectant solutions may be harmful and may
discolor plastic materials.
Perform the disinfectant procedure only after the unit has cooled to room temperature. Wipe the unit with a damp cloth
to remove any residual deposits of the disinfectant solution.
Use of alcohol-based disinfectant solutions will void the warranty.
Remember to reconnect the power cord to the unit when cleaning process is completed.

LAMP REPLACEMENT

The lamp used in the QHL75
of 100 hours under normal usage and with nominal input voltages (increased or decreased AC input voltage may
reduce life). Bulb life may be shortened by a sharp blow during use or cool down period. As the light intensity of all bulbs
decreases during usage, we recommend to check the light output frequently using a CureRite™.
Replacement is recommended when lamp transmission is below the minimum specified by composite manufacturers or
less than a 300mW/cm
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Proceed by turning the nosecone to align the line with the open circle on the body of the handpiece. Pull the nose cone
off to expose the light bulb. Gently wiggle the lamp out of the socket and replace with a new lamp. A bulb extraction tool
is provided should you have difficulty removing the bulb.
When inserting the new lamp, it is recommended that you use a tissue to hold the lamp and prevent skin acids from
etching the quartz envelope which will lead to premature lamp failure. Replace the nose cone and turn so the line is
opposite the closed circle on the handpiece

FUSE REPLACEMENT

NOTE:
Always disconnect the power cord from the unit before replacing the fuses (use fuses with the same
ratings).
1. The fuses are located in the fuse compartment of the AC receptacle, at the side of the base unit.
2. With a small screwdriver, pull out the fuse compartment and let the door fall open (on its pivot) to expose the
fuses.
3. Pull out the fuses, visually inspect the fuses and replace if necessary with fuses of the same ratings.
4. Lift the fuse door open until it covers the fuses and push the fuse compartment completely in the AC receptacle
until it locks in place.
Remember to reconnect the power cord.
Curing Light is a 75 watt, 11.0 volt quartz halogen type, which has an estimated life rating
®
radiometer reading.
Disconnect the power cord from the unit and be sure the lamp has cooled before
replacing.
Good practice is to inspect the optical filter within the nose cone. Remove any contaminants
using a cotton swab. A cracked, peeling, discolored or defective filter should be replaced.
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