K-Patents SeedMaster 2 - Manual (Page 34)

6 START UP AND USE 34
34
6 START UP AND USE
6.1 Start up
It is recommended to complete electrical connections before switching SeedMaster 2 on.
WARNING:
Before switching SeedMaster 2 ON for the first time, check if the mains supply and instrument
voltage specifications are compatible.
When switched on by the mains switch it will take a minute or so until the name “SeedMaster 2” above a
sugar crystal drawing will appear on the LCD for a few seconds. It will be followed by the “MAIN DISPLAY”
showing data fields for 1or 2 crystallizers with, or without actual data.
The “MAIN DISPLAY” is the starting point for SeedMaster 2 CONFIGURATION AND SET UP.
NOTES:
1. There is no mains switch in the instrument! A separate one should be used.
2. It is recommended to prepare SeedMaster 2 for the actual application by starting with
CONFIGURATION followed by
SET UP
6.2 Default settings
There are a few settings which are used to ensure the correct operation of SeedMaster 2.
Frequency of calculations:
Massecuite parameters are calculated at 10 sec intervals for one or two crystallizers simultaneously. Timing
operations, like switching ON the seeding valve for a few seconds are independent from the frequency of
calculations.
Check of on-line data inputs / outputs:
Range excursions:
In order to decrease the effect of error in input and calculated data and to signal a blinking “Alarm”
accompanied by logging an “Event”, most of these are checked against their ranges of operation considered
“normal” during an ACTIVE strike, or the ACTIVE time of crystallization. These “normal ranges” are:
• Concentration (syrup / mother liquor)
65 – 90 (%)
• Temperature (massecuite)
30 – 85 (
˚C)
• Density (syrup / massecuite)
1250 – 1520 (kg/m)
• Solids content (syrup / massecuite)
65 – 95 (%)
• Level (optional)
0 – 100 (%)
• Supersaturation
0,7 – 2,0 (-)
• Consistency
0 – 100 (%)
• Syrup/mother liquor purity
50 – 100 (%)
• Crystal content (by volume)
0 – 65 (%)
Whenever the received or calculated data are out of range they will be replaced by the appropriate limit
values.
NOTES:
1. It is not possible to define a similar normal range in advance for motor current or power consumption,
because it can be normal in a small to any high limit range.
2. The temperature range is intended to cover cooling crystallization, too.
3. The “normal ranges” listed above can not be modified.
4. In ACTIVE mode instead of changing input data, displaying for a longer time one of the limits of its
normal range might be an indication of transmission failure.
5. It follows from the above that in STAND-BY mode (WAIT FOR START, WS on the MAIN
DISPLAY) displayed data may be out of their normal ranges, but these excursions are not signaled
as “Alarms” and are not logged in the “Events’ history” list.