360094-1/M
12
Operation
8 .8
Enable or Disable Agitation Motion
Default is enabled. Agitation reduces thaw time. It is controlled with the switch located at the rear of
thawer. For DH4 and DH8, top and bottom switches control right and left basket agitation, respectively.
Agitation switches.
8 .9
Mute an Audible Alarm
Audible alarms can be muted. The temperature controller will still continue to flash an alarm message if
the alarm has been muted.
►
To mute an audible alarm, press the
MUTE
button.
Mute button.
Pressing the MUTE button silences alarms for both baskets (DH8 models). If a second audible alarm
activates while the first audible alarm is muted, the second alarm will be muted as well.
When an alarm is muted, the duration is indefinite. Muting is cleared under the following conditions:
►
The condition that triggered the alarm is resolved
►
AC power to the plasma thawer is switched off
9
Temperature Monitor Setpoints
9 .1
Change the Chamber Temperature Setpoint
NOTEQ
Do not change any other temperature controller parameter unless instructed in
this manual or by Helmer Technical Service.
The default chamber temperature setpoint is 36.5 °C. If the chamber temperature falls below the setpoint,
the temperature controller activates the chamber heater until the setpoint is reached. The chamber
heater and sensor are located underneath chamber.
Change the setpoint:
1
Determine setpoint, if other than default.
2
The chamber temperature appears on the display.
NOTE
The displayed temperature may differ from the setpoint, especially if chamber
temperature has not stabilized at the setpoint.
