Specifications

button once; time remaining for the current segment, ei-
ther ramp or dwell will be indicated. If the loop counter
has been set to any value other than one, then the above
procedure will be repeated for each loop.
At the end of the complete program, an “E” will appear on
the display.
Parameter Change While Running
The previous parameters can be inspected but not
changed while a program is running. If it is necessary to
alter a parameter while a program is running, the program
must be placed into the hold condition. To put program
into hold, push run/hold button once. After modification of
the parameter, returning the program to the run state will
cause the program to continue with the changed value(s)
installed. Push run/hold button again to restart program.
Loop Count
If the loop count is set to values other than one, then the
number of loops remaining in a running program can be
displayed. To determine which loop is being performed
depress scroll button until LR’ is displayed and by pushing
either the up or down button the remaining number of
loops, excluding the one being executed, is displayed.
Program Hold
A running program can be forced into hold at any stage
by depressing the “RUN/HOLD” push button on the front.
When a running program is forced into hold, “HOLD” leg-
end will appear on the display together with the segment
type and will be flashing. Pushing “RUN/HOLD” button
again will return the program to a run situation and extin-
guish the “HOLD” legend.
Program Reset
A running, held or finished program can be reset by de-
pressing the up and down push buttons together.
When the reset has been enabled, the parts of the display
associated with programming will be extinguished and the
controller will operate as a single set point control.
32
MULTI-PROGRAMMABLE MODELS
Note
The temperature control in these mod-
els is a programmble and automatic
single set point device. When the pro-
gram has ended, the controller will
maintain the chamber temperature at a
value equal to the last programmed
level (PL), until the program is can-
celed. It will not automatically cool to
ambient unless the last programmed
level (PL) is set at ambient. When a
program is canceled, the controller will
maintain the chamber temperature at a
value equal to the main set point (SP1
or SP). To cancel a program, depress
and release the UP or DOWN push
buttons simultaneously. Be sure single
set point mode is set to 20° or below
as described earlier in this manual.