![Hanna Instruments HI 700 Series Instruction Manual Download Page 16](http://html1.mh-extra.com/html/hanna-instruments/hi-700-series/hi-700-series_instruction-manual_3839616016.webp)
16
Code
Valid Values
Default
PW
75 Initial cleaning year
1998 to 9999
1998
no
76 Initial cleaning time
00:00 to 23:59
00:00
no
77 Cleaning ON interval
0 to 19999 minutes
0
no
90 Display selftest
0: off
1: on
0
yes
91 Keyboard selftest
0: off
1: on
0
yes
92 EEPROM selftest
0: off
1: on
0
yes
93 Relays and LEDs
selftest
0: off
1: on
0
yes
94 Watchdog selftest
0: off
1: on
0
yes
99 Unlock password
0000 to 9999
0000
yes
Note
The process controller automatically checks to ensure that the entered data matches
other related variables. If a wrong configuration is entered, “ERROR” blinks on the LCD
to prompt the user. The correct configurations are the following:
If M1=
/ 0 then S1≤HA, S1≥LA;
If M2=
/ 0 then S2≤HA, S2≥LA;
If M1= 1 then S1-H1≥LA;
If M1= 2 then S1+H1≤HA;
If M1= 3 then S1+D1≤HA;
If M1= 4 then S1-D1≥LA;
If M2= 1 then S2-H2≥LA;
If M2= 2 then S2+H2≤HA;
If M2= 3 then S2+D2≤HA;
If M2= 4 then S2-D2≥LA;
If M1= 1 and M2 = 2