UVP HM-4000 Multidizer - Manual (Page 11)

Hybridization Ovens
Page 11
User-Set UV Time Exposure
Setting your own UV time exposure can be achieved as follows:
1. Press “TIME” on the tactile touchpad and then set your requirements by pressing the
corresponding numbers. Your time exposure settings will be displayed flashing on the LCD.
Remember that your time exposure settings are displayed in minutes and tenths of a minute. If your
settings are correct, press “ENTER” on the tactile touchpad.
2. Press “START”. After a slight delay to energize the UV tubes, the LCD will begin to count down.
The unit will stop automatically at the end of the exposure cycle and will beep five times. Exposure
is now complete.
3. At the end of the exposure cycle, open the door and remove the sample.
Operational Notes:
•
To abort an exposure, press “STOP” on the tactile touchpad. The LCD will display the remaining
exposure time.
•
To restart an aborted exposure, press “START” on the touchpad. The exposure will continue from
the point at which the exposure was aborted.
•
To reset an aborted exposure, press “RESET”. The LCD and touchpad will return to the last-used
setting.
•
The unit will not operate with the door open. Opening the door during a cycle aborts the cycle.
Reclosing the door will reset the cycle to the last-entered cycle used. To restart, press the “START”
key.
Changing the UV Wavelength of the Crosslinker
The Crosslinker is shipped with shortwave UV tubes. However, should user requirements and applications change, it
is possible to modify the ultraviolet wavelength and recalibrate the UV sensor and microprocessor to the new UV
wavelength. This is accomplished by purchasing FIVE tubes of the new UV wavelength and the proper UVP
calibration sensor.
TUBE P/N WAVELENGTH SENSOR P/N DESCRIPTION
34-0006-01
365 nm Longwave 97-0016-02 UVX-36 Longwave
34-0042-01
302 nm Midrange 97-0016-04 UVX-31 Midrange
34-0007-01 254 nm Shortwave 97-0016-01 UVX-25 Shortwave
UV Wavelength Calibration Procedure
1. After disconnecting the unit from the electrical supply, install the five new tubes.
2. Plug the corresponding UV calibration sensor into the back of the Crosslinker chamber, just below the
pull-out tray.
3. Place the UV calibration sensor in the middle of the tray of the exposure chamber.
4. Close the Crosslinker door.
5. Invoke the calibration mode of the Crosslinker by holding down “STOP” on the tactile touchpad and then
turning the power to the unit ON.
6. A sequence of tones will be heard from the Crosslinker and a 180 second count will display on the LCD
once the calibration procedure has begun.
7. No calibration occurs during this 180 second period. This time sequence allows for the UV tube sources
to warm up and stabilize.
8. Upon completion of the 180 second period, measurements are automatically made with the UV
calibration sensor and the Crosslinker sensor. These measurements are compared to limits of
acceptability.
9. If sensor readings are unacceptable, an error code (01, 02, 03 or 04) will flash on the LCD. Press any
key to stop.
10. Check all connections and perform system calibration once again. If the same error message appears,