Instruction Manual
K SERIES Cryostorage System
IM: CryoCeK
Revision: 02
Approved by: CB
Page
56
of
87
Inspection and maintenance activities
Frequency
Defrost the Cryostorage System as per section 8.4
Annually or whenever
the ice buildup
exceeds approx. 5
mm
Disinfect the Cryostorage System as per section 8.5
Prior to change of the
type of stored samples
or before the device is
taken out of operation
Perform Normal Evaporation Rate test as per section 8.6
Due to sign of
abnormally nitrogen
consumption
Test for electrical safety
Every two years
Replace the solenoid valve and other replacement parts as necessary
Every three years
In particular, local specific regulations may also apply to your K SERIES Cryostorage
System to which extended inspections and tests require shorter periods of time.
8.3 CLEANING THE STRAINER
The Worthington Industries K SERIES Cryostorage System is supplied with a strainer.
The refrigerator will not fill properly if the strainer is clogged with ice or dirt.
To clean the strainer follow the procedure:
Close the liquid nitrogen supply valve to the refrigerator
Vent the fill line of all pressure
Remove and warm the strainer to ambient temperature
Purge the strainer from both directions with dry nitrogen gas or dry oil-free air
Rinse the strainer with alcohol
Purge it again with dry nitrogen gas or dry oil-free air to clear contaminants.