TM 5-3895-383-24Illustration 61Control Console(1) Vibratory on/off control switch. (2) Vibratory amplitudecontrol. (3) Variable vibration control knob.6.Turn variable vibration control knob (3) to the fullcounterclockwise position.7.Depress vibratory on/off control switch (1) in order tostart the vibratory system. Read the vibrations perminute (VPM) from optional VPM gauge or read theVPM from the 133-0963 Vibration Tachometer or the133-9905Frequency Meter. The minimum frequencyfor high amplitude should be 1400 ± 50 VPM.Illustration 62Control Console(8) Variable frequency controller.Illustration 63Variable Frequency Controller(8) Variable frequency controller. (9) "P5" Low amplitude-minimum frequency potentiometer. (10) "P6" High amplitude-minimum frequency potentiometer. (11) "P3” Low amplitude-maximum frequency potentiometer. (12) "P4” High amplitude-maximum frequency potentiometer.8.Depress the vibratory on/off control switch in order toshut off the vibratory system.NOTE:Refer to Testing and Adjusting, "VibratoryTachometer - Adjust" if the vibration tachometeris installed and the minimum frequency for highamplitude appears incorrect. This adjustmentprocedure should be followed before making anymachine adjustments.NOTE:Adjustment of the vibratory frequency is donethrough the adjustment of potentiometers whichare found by removing the panel on the side ofthe control console. The potentiometer arelocated on the variable frequency controller. Theadjustment of the potentiometers is done with asmall screwdriver.NOTE:Turning the potentiometers clockwise willincrease the frequency.NOTE:If the frequency has not shown any variation afterrotating the potentiometers for two full turns, referto the Troubleshooting section.9.If the minimum frequency for high amplitude is not at1400 ± 50 VPM, "P6" high amplitude-minimumfrequency potentiometer (10) must be adjusted. Afteradjusting "P6" high amplitude-minimum frequencypotentiometer (10), verify that the minimum frequencyfor high amplitude is correct.11-56
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