Troubleshooting Guide - Ultradent Products VALO GRAND Manual De Instrucciones

Troubleshooting Guide

If the solutions suggested below do not rectify the problem, please call Ultradent at 800.552.5512.
Outside the United States, call your Ultradent distributor or dental dealer.
Repairs are only to be performed by authorized service personnel. Ultradent to provide service personnel with documentation to perform repairs.
Problem
Light will not turn on
Light does not stay on for desired time
Light is not curing resins properly
40000
35000
30000
25000
20000
15000
10000
5000
Technical
VALO GRAND Corded LED Curing Light
Information
Lens Diameter 11.7 mm
Wavelength 385nm – 515nm (see qualification below)
range Effective output Power of VALO GRAND Corded curing light falls within the following wavelength range:
• 395nm <= EP <= 480nm
Minimal and insignificant power can be found in wavelength ranges:
• 385nm – 395nm and 480nm – 515nm
Light Intensity
Table Measurement
Instrument
Aperture of Meter
Standard Power (±10%)
High Power Plus (±10%)
Xtra Power (±20%)
1. Press the Time/Mode or either Power Button to wake from Power Save Mode.
2. Check that both cords are firmly connected together and to the electrical outlet.
3. Confirm power to the wall outlet.
1. Check Mode and Timing lights for correct time input.
2. Confirm all cord connections are fully seated.
3. Unplug and re-plug power cord into the electrical receptacle.
1. Check lens for residual cured resins/composites. (see "Maintenance and Cleaning")
2. Using proper amber UV eye protection, verify the LED lights are working.
3. Check power level with light meter. (See "Maintenance and Cleaning,")
4. Check expiration date on curing resin.
5. Ensure proper technique is being followed (adhesive/composite) by manufacturer recommendations.
Effective Composite Curing Wavelength Bands
Effective lower
Effective Upper
wavelength band
wavelength band
395 nm - 415 nm
440 nm - 480 nm
0
360 380 400 420 440
Nominal Radiant Exitance Comparison Chart
† * Demetron L.E.D. † MARC
Radiometer spectrum analyzer
7 mm 3.9 mm
1000 mW/cm² 1200 mW/cm²
1600 mW/cm² 1800 mW/cm²
N/A 3200 mW/cm²
Possible Solutions
XTRA POWER MODE
HIGH POWER PLUS MODE
STANDARD POWER MODE
460 480 500 520 540
Radiant Exitance will vary based on instrument
capability, measurement method and light placement.
‡ Gigahertz spectrum analyzer
† Demetron radiometers and MARC spectrum analyzers
Exitance Total Power
should be used as reference only due to having smaller
15 mm 15 mm apertures than VALO GRAND Corded curing lights.
* Demetron radiometers should be used as reference
900 mW/cm² 970 mW
only due to limitations in power and spectral response.
1500 mW/cm² 1615 mW
‡ Radiant Exitance conforms to ISO 10650 when
measured with a Gigahertz spectrum analyzer.
2100 mW/cm² 2260 mW
5