Operation Manual ____________________Function of Controls and Indicators
_________________________________________________________________________________________________
5-1
5. FUNCTION OF CONTROLS AND INDICATORS
XL2020 FUNCTIONS
POSITION
NO.
CONTROLS FUNCTION
1. Process Time Displays total pre-set time sonication is applied to sample
(1 sec to 10 hours maximum).
2. PULSAR
TM
ON Time Indicates pulse ON time from 0.1 seconds to 1 hour.
3. Power Output Display Indicates relative percentage of maximum available
ultrasonic power delivered to the horn (i.e. 40% output = 0.4
x 600 Watts available = 240 Watts delivered).
4. PAUSE Indicator Indicates that unit is being temporarily interrupted during
processing.
5. TIMER Indicator Indicates that timer is set for processing.
6. CLEAR Key Clears previous or erroneous entries. Exits programming
mode.
7. ENTER Key Enters data during program mode.
8. Power Switch ON Position (I) - energizes generator.
OFF Position (O) - de-energizes generator.
9. LCD Display Screen Displays items 1, 2, 3, 10 & 11 listed below and prompts.
10. Elapsed Time Display Displays actual elapsed time of sonication.
11. PULSAR
TM
OFF Time Indicates pulse OFF time from 0.1 seconds to 1 hour.
12. Overload Indicator Indicates a load condition greater than the maximum output
power of the generator or that the unit requires tuning or
other readjustments.
13. PULSAR
TM
Indicator Indicates application of pulsed energy.
14. PAUSE Key Interrupts or Resumes processing cycle.
15. TUNE Key Activates or Deactivates tuning circuit.
16. PROG/DATA Key Initiates Timer and PULSAR
TM
entry program and displays
entries on the LCD screen during run.
17. START/STOP Key Starts or Stops output in all modes of operation. Resets
timer in timed mode.
18. Amplitude Control Knob Controls the amplitude of ultrasonic vibration at the tip of
the horn.
19. Tuning Control Knob Allows adjustment of generator frequency to optimize
performance of convertor/horn assembly. Also used to
verify condition of horn and/or tip.
20. SHV Cable Connector Connects convertor cable to generator.
21. Footswitch Jack Connects external ON/OFF control (Foot Switch or Timer).
22. Power Receptacle Connects line cord to generator.
23. Fuse (10 amp 115V)
( 8 amp 220V)
Protects against electrical overload.