Defrost Control - Thermo Scientific SHKE8000 Series Maintenance Manual

Section 2
Operation
Hold Temperature
To set a new Hold temperature,
press the Temp button twice. The
Control (continued)
screen at right appears. The Hold
temperature flashes.
Using the up and down arrows, program a new Hold temperature. Press
the Temp button to save the new setting and return to the Operating
Screen.
Toggle the Temperature Control with either the up (on) arrow or the down
(off ) arrow.
Pressing the Time, Speed, or Temp buttons returns the screen to the
previous (SwVers O-temp T-ctrl) display. If no buttons are pressed, the
display will automatically return to the Operating Screen after about 15
seconds, also saving the selection to memory.

Defrost Control

Defrosting of Model SHKE8000-7/SHKE8000-8CE Shaker takes place
automatically about every eight hours, when the set temperature is 10°C or
less. When turned on, the defrost system turns off the refrigeration system
and increases the cabinet temperature until it reaches the 12°C or 14°C
defrost setpoint. At that time, the system turns the refrigeration sysytem
back on. The defrost cycle will continue for about thirty seconds. Then the
cabinet circulation fan is turned back on and the Defrost message is
cleared from the display.
To turn the defrost system on and off, press the down arrow, the up arrow,
the Silence button, then the down
arrow button five more times.
The screen shown at right appears
on the display.
Press the Speed button beneath
On/Off and the following screen
appears.
Toggle the Defrost Control with
either the up (on) arrow or the
down (off ) arrow.
Pressing the Time, Speed or Temp buttons returns the screen to the
previous (Defrost on/off, Temp) display.
Thermo Scientific Model SHKE8000 Series Shakers 2-21