Taylor-Wharton LABS Series - Manual (Page 16)

14
LABS
To clean and sterilize your defrosted LABS Cryostorage System, spray the entire inner
vessel surface with ample amounts of an approved & compatible disinfectant. Allow
surface contact to be maintained for a minimum of five minutes. Rinse the inner vessel
with water, remove all water and debris through the access opening located in the
carousels bottom tray, and vacuum or towel dry the surface. Spray the inner vessel
surface with a 70% alcohol to water solution and maintain surface contact for fifteen
minutes. Rinse the inner vessel surface with water and vacuum or towel dry excess water.
Final dry the inner container, sensor line, and fill line using a nitrogen gas purge.
Normal Evaporation Rate (NER) Test
Nitrogen consumption is an accumulation of all system components and user
introduced evaporation. The storage chamber is a double walled, vacuum insulated
vessel and contributes to the daily consumption of liquid nitrogen. The liquid nitrogen
supply vessel and transfer hose also contribute greatly to the daily consumption
rate. Choosing to control the vapor temperature, combined with the liquid level and
temperature specified, will affect the overall nitrogen consumption. In addition to
these variables, opening the lid to retrieve product, and adding new product into the
storage chamber will pay a role in the accumulative liquid nitrogen consumption.
If the nitrogen consumption of your Cryostorage System seems excessive, it may be
appropriate to perform an estimated Normal Evaporation Rate (NER) test on the
Cryostorage chamber. To perform an NER test:
1. Fill the Cryostorage unit to the “High Level” sensor.
2. Measure the liquid nitrogen level with a plastic or wooden measuring rod.
3. Close and lock the lid of the LABS Cryostorage System for forty-eight (48 hours).
4. Open the LABS Cryostorage System and measure the liquid nitrogen level.
Typically, liquid nitrogen levels will drop approximately 3/8 in. (9.53 mm) per day.
If your measurement indicates a drop in excess of 3/4 in. (19 mm) per day, please
contact your Taylor-Wharton distributor or Taylor-Wharton for further information.
Please have your serial number, this manual and service history available.
TROUBLESHOOTING
Symptoms
The key to troubleshooting your LABS Cryostorage System is to determine which
component in the system is the source of the problem. Utilizing this manual along
with your controller’s manual, determine if the problem is occurring in any of the
following subsystems: Supply Vessel, Transfer Line, Power Source, Temperature,
Level Sensing, Security, Lid Switch, Solenoid Valve, Control Display, Alarm System,
Communications. After determining which sub-system is having the problem, isolate
the problem further by performing sub-system tests. Once the problem is isolated
and defined, it will be easier to solve.
REPLACEMENT PARTS
A complete list of Replacement Parts and Accessories for the LABS Series is available
from the following Taylor-Wharton Customer Care Centers:
Americas +251-443-8680
In U.S. and Canada: 800-898-2657
Europe +421 (0)55-727-7157 Asia/Australia +61 (0)2 6040-2533
WARNING:
Never use hollow
rods or tubes as
dipsticks. When
a warm tube is
inserted into liquid
nitrogen, liquid
will spout from the
top of the tube and
may cause personal
injury.
WARNING:
The source power
supply at 110/220
can cause a lethal
electrical shock.
Unplug the power
cord before
beginning any
repairs.
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