MTS Series FEC Environmental Chamber - Manual (Page 28)

1. Connect a supply of clean, water-free liquid nitrogen to the coolant input
connector.
The cooling gas supply tank should be pressurized to 0.15 MPa (22 psi) for
LN2 cooling. If the supply tank pressure is greater than the recommended
pressure, install a pressure regulator between the supply tank and the
coolant solenoid.
Use of LN2 gas in the chamber will result in a lack of oxygen in and around
the chamber.
A lack of oxygen can cause dizziness or blackouts.
Ensure that the area around the chamber is well ventilated.
2. Turn the liquid withdrawal valve on the supply tank on before beginning a
test.
Note When cooling is not being used, the liquid withdrawal valve on the supply
tank should be kept closed to prevent leakage of the coolant.
Check the operating temperature range of each component in the
environmental chamber. All components must be able to operate at the
temperature of the test.
Damage to equipment can occur.
Do not set a testing temperature that is higher or lower than the temperature
rating of any component (grips, fixtures, and so forth.) inside the chamber.
WARNING
WARNING