Dynalab SRT9D/120V/60 - Manual (Page 4)

Operation SRT6 & 9
Position the apparatus on a firm level surface and
connect to the mains electricity supply. Place the
samples to be mixed between the rollers. Once all
the samples have been set, switch the Roller
Mixer ON using the Mains On/Off switch.
Operation SRT6D & 9D
Fig 1
Position the apparatus on a firm level surface and
connect to the mains electricity supply. Place the
samples to be mixed between the rollers. Once all
the samples have been set, switch the Roller
Mixer ON by pressing the control knob (see fig 1)
The unit will carry out a self test routine and then
the display will show the last stored set speed (red
dot in the display shows RPM is selected). This can
be adjusted by turning the control knob. Once the
correct speed is displayed press the start / stop
button to begin motion. The speed can be
adjusted without halting the unit. The unit can be
halted at any time by pressing the start / stop
button.
Setting the timer.
In order to use the timer press the mode button.
The red dot on the display moves over to time.
The display will show the last stored time in hours
and minutes (H is displayed on left hand side of
digital display) or seconds and minutes depending
on the timer unit selected (see below to change).
Select the desired count down time using the
control knob (--- indicates continuous, no timer
set). When the display shows the correct time in
minutes, press the start / stop button to begin
operating. During operation, motion can be
paused at any time by pressing the start / stop
button. If the button is pressed again, motion
will start again and the timer will continue to
count down. The current timer or speed can be
displayed or adjusted by using the mode button
to toggle between the two and altered with the
control knob, without halting the unit. When the
timer reaches zero, the unit will be automatically
halted and an alert will sound. Press the start /
stop button to revert back to the saved time and
speed values set (see instructions below to adjust
saved values) or select new values following
instructions given above.
N.B To disable the timer and revert to
continuous rotation, select - - - in the
display during timer mode.
To switch the unit OFF completely, press the
control knob in. The display will show OFF.
Saving speed/time values.
In order to save a commonly used speed/time
value, switch the unit ON by pressing the control
knob in (see fig 1). Select both a speed value
and a time value (either 1 second to 90 minutes,
1 minute to 9 hours or continuous - - -) using
the instruction given above. Switch the unit OFF
by pressing in the control knob. Wait 5 seconds
and switch the unit back ON by pressing the
control knob in. The input values are now saved
in memory. They can be altered at any time by
following the same procedure.
N.B. When the unit is switched OFF using
the control knob, whatever values of
speed/time were set prior to turning the
unit off will be saved, and will be the values
restored when the unit is switched back on.
Changing the timer unit
The unit timer is defaulted to minutes only (1
minute to 9999). To change to minutes and
hours (1 minute to 9 hours, H is displayed in the
left digit of the timer display), or to change to
seconds and minutes (1 second to 90 minutes)
turn the unit off using the control knob then
switch the mains power off at the plug. Hold
down both the start/stop button and the mode
button whilst simultaneously switching the mains
power back on. The display will temporarily
2
Start/stop button Mode button
Digital display Control knob
rpm/time indicator