Instruction Manual
K SERIES Cryostorage System
IM: CryoCeK
Revision: 02
Approved by: CB
Page
28
of
87
7 OPERATION OF LIQUID NITROGEN LEVEL CONTROL SYSTEM
7.1 CONTROLLER INITIAL START UP
Check that the Sensor Assembly and Thermocouple is in the required position as per
section 6.3.
Table 4
Procedure for initial start up of the controller
No
Steps of procedure
Display and notes
1
Plug the M507CE Safety PSU/Connection
unit into the mains supply and switch on
After a few seconds the display should show
temperature and level (example):
If the vessel is empty or the LN2 level is low, the
refrigerator will begin to fill
Alarms may occur
2
Press the
Alarm Mute
(switch 2) to silence
the audible alarm
Ignore any alarm messages for the time being
3
Press the mute switch again to return to
the temperature and level display
When the refrigerator has finished filling the controller should be set-up and calibrated as per
section
7.3
.
NOTE
It is possible that on initial filling the fill timer will time out and switch off the LN2 Fill Solenoid
Valve (switch 1). This is indicated by an alarm and the LED blue slow flashing.
If this happens, reset the fill timer and restart filling by pressing the LN2 Fill Solenoid Valve (switch 1)
twice!