Instruction Manual
K SERIES Cryostorage System
IM: CryoCeK
Revision: 02
Approved by: CB
Page
58
of
87
8.5 CLEANING AND DISINFECTING THE CRYOSTORAGE SYSTEM
The Worthington Industries K SERIES Cryostorage System
may need to be cleaned and disinfected if
the type of stored samples is changed or the device is taken out of operation.
Assure interim re-storage of vital samples or dispose of discarded samples
Always clean and disinfect the Cryostorage System, regardless of the type of stored
samples, prior to return to Worthington Industries for repair or maintenance.
Never use chlorine-based disinfectants or abrasive detergents, steam
pressure or water jets to clean your K SERIES Cryostorage System.
NOTE
A suitable disinfactant for use herein is a non-glutaraldehyde cold sterilant
manufactured by Alcide Corporatio
n and known commercially as EXSPOR™
To clean and disinfect the K SERIES Cryostorage System follow the procedure:
Close the liquid nitrogen supply valve to the refrigerator,
Vent the fill line of all pressure,
T
urn the controller off,
Disconnect the power source and the liquid nitrogen source,
Remove all stored samples and inventory control system components,
Allow the residual liquid nitrogen to evaporate and the cryogenic vessel to warm to ambient
temperature,
Increasing air flow with a room fan or blower will expedite the evaporation,
Spray the entire inner vessel surface with ample amounts of an approved disinfectant,
Allow surface contact to be maintained for a minimum of five minutes,
Rinse the inner vessel with water,
Remove all water and debris, and towel dry the surface
Spray the inner vessel surface with a 70 % alcohol/water solution,
Allow surface contact to be maintained for a minimum of fifteen minutes,
Rinse the inner vessel surface with water,
Remove all water, and towel dry.