Taylor-Wharton KRYOS Controller - Manual (Page 9)

7
KRYOS
If possible, the original packing material should be retained for reshipment. If not
available, consult Taylor-Wharton for shipping and packing instructions. It is the
responsibility of the customer to assure that the goods are adequately packaged for
return to the factory. All refrigerators returned to Taylor-Wharton must be clean and
sterile before return. See page 13 for cleaning instructions.
INSTALLATION
Getting Unit into Service
Your Cryostorage System should come with complete instructions for how you should
remove the unit from the crate and put it into service. Read both this manual and
your Cryostorage System’s manual before beginning any installation. Make sure to
follow any required procedures and safety guidelines when you are hooking up your
Liquid Nitrogen source.
Electrical
The liquid level controllers used with these refrigerators operate from 24/16.5 VAC.
However, the external transformer does have a 110/220 VAC primary. Disconnect
the electrical power cord from the outlet before attempting any service.
Power Supply Connection
Connect the power supply to your LABS or K-Series Cryostorage System and then
plug the power supply into a surge protected 110/220 VAC outlet.
OPERATION
These instructions are for operators experienced with cryogenic equipment. Before
operating the system, become familiar with the safety precautions in this manual
and in reference publications. Make certain all applicable provisions set forth in the
Installation Section have been followed before placing a system in operation. Study
this manual thoroughly. Know the location and function of all system components.
Initial Fill
The Cryostorage System using the KRYOS controller, comes preset from the factory.
The liquid nitrogen supply pressure at the inlet to the refrigerator should be in
the range of 10 psig (0.7 bar/69 kPa) to 20 psig (1.4 bar/138 kPa) for optimum
performance. Higher operating pressures will increase transfer losses and create
excessive turbulence of the liquid in the refrigerator which can generate false signals
to the liquid level controller causing the refrigerator to under fill. In “liquid phase”
storage applications, excessive turbulence can cause splashing which could result in
personal injury.
Control Components
Interface Panel
The KRYOS Interface panel, which the user will interact with, contains the vacuum
fluorescent display as well as the number keypad, power button, help button and the
soft-key control buttons. (See Figure 2.0 and 2.1 on following page.)
WARNING:
Electrical shock can
kill. Do not attempt
any service on these
units without first
disconnecting the
electrical power cord.
CAUTION:
If using a power
source other than
North American
110/220 VAC,
contact Taylor-
Wharton Customer
Service to make
sure you are using
the appropriate
converter. Use of an
unapproved power
source converter may
cause permanent
damage to the unit.
NOTE:
For KRYOS Field
Installation instructions
refer to Page 35.
WARNING:
Maintain adequate
ventilation to
prevent asphyxiation
hazard (see Safety
Precautions).
WARNING:
If the fill fails to
stop for any reason,
quickly close the
liquid supply valve
to prevent overfilling
until the cause of
the problem can be
determined.