Instruction Manual
K SERIES Cryostorage System
IM: CryoCeK
Revision: 02
Approved by: CB
Page
51
of
87
Information signals
Filling is indicated by a blue LED in the LN2 Key. If filling times out and an LN2 supply alarm occurs
the LED flashes slowly. The alarm is reset in this case by pressing the LN2 key
Alarm logging
The level controller can store up to 8 000 or 20 000 records depending on the memory configuration.
The log contains regular status reports and alarm reports.
All alarms are logged with time and date and a unique alarm code. A list of all alarm
codes is given in Appendix H.
NOTE For further details consult the separate manual (IM1026) or contact Worthington
Industries or your distributor.
On power failure or power down the log is maintained for 4 weeks minimum by an internal battery.*
When the log is full the oldest records are overwritten.
General Alarm
If a certain number of alarms (currently set to 25) occur in a 24 hour period time, a General Alarm is
raised. The controller needs to be reset to clear the alarm, or alternatively it will also be cleared at the
end of a 24 hour period (Midnight).
The general alarm indicates when multiple intermittent problems are occurring. If the alarms do not
persist for long enough to trip the remote alarm they might not be noticed for some time.
The purpose of the general alarm is to draw attention to this situation, and to the
inspection of the data log to reveal the cause.
Service Call Indicator
With the Service Call option set, the controller will prompt when a service becomes due. When a
service is due a ‘!’ symbol flashes in the left hand corner of the display.
The Service Call option (on/off) and Service due date (month and year) are set in the ENGINEER
MENU.
