Operation Manual
____________________Function of Controls and Indicators
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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.