TISSUE PROCESSOR BAVIMED 2050

Please suggest me which mode is suitable to set.

for tissue processor bavimed 2050 ?
time make : crouzet ;
timer model : timer 815 ;
no. 88857301
1)A1 mode:
-time delay switch
-instantaneous switch
-no memory
-initialization of time delay power supply cut-off

2) A2 mode:
-two time delay switches
-no memory
-initialization of time delay by power supply cut-off

3) AM mode :
-two time delay switches
-memory during time delay
-initialization by front panel push-button (RST) or dry contact during or at end of time delay or by power supply cut-off at the end of time delay only.

4) AMt mode :
-two time delay switches
-memory during time delay
-memory after time delay
-initialization by front panel push-button ( RST) or dry contact during or at end of time delay.