36
4. OPERATION PROCEDURE
Wait Function
When the wai
t function is set to ON, the system “waits”, without counting down time, until chamber
temperature (reading) is within the deviation zone of between -3°C and +6°C of the temperature setting.
When time is set to 0 minutes, the system will build heat at full power to reach setting as quickly as possible.
When time is set longer than system normally takes to heat or cool to selected temperature, unit will
automatically control heating and cooling so that temperature setting is reached (staying within the deviation
range) at the time setting.
If chamber temperature drops during temperature stabilization, such as when opening chamber door,
system will “wait” and pause countdown time if deviation zone’s upper or lower limit is exceeded.
When wait function is set to OFF, the system proceeds to next step when time setting is reached regardless
of whether temperature setting is reached or whether chamber temperature falls below or exceeds the
deviation zone.
When time is set beyond unit capacity to heat or cool (e.g. too short), unit proceeds to next step before
temperature setting is reached. Wait function should be set to ON for short ramp (build) times.
※
Example of estimated heating/cooling at indicated setting of wait [All
ON
] and [ALL
OFF
] in
the program in the table below.
Step
1
2
3
4
5
6
7
8
9
10
Set temp(
℃
)
100
100
50
50
100
100
50
50
75
75
Set time
0 min
30 ,on
0 min
30 min
0 min
5 min
0min
5 min
2 hr
30 min
Heating and cooling time of steps (1), (3), (5) and (7) are at the full power setting.
Heating time of the step (9) has been set longer than the specification.
【
Example of estimated process at “Full ON” setting for the wait function
】
【
Example of estimated process at “Full OFF” setting for the wait function
】
Temperature (
℃
)
Wait width deviation
lower limit
Wait
width
deviation
upper limit
