Cryomech LNP-40, Инструкция по установке, эксплуатации и текущему обслуживанию

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Installation
6-1
Section 6: Installation
6.1 System installation
The entire section on the installation of the liquid nitrogen plant should be reviewed
before installing the system.
CAUTION
Failure to follow these installation guidelines could result in voiding the warranty.
The liquid nitrogen plant should be located in a well ventilated area. The ventilation is
necessary for proper cooling of air cooled helium compressor packages as well as to
disperse the oxygen that is released from the nitrogen generator during operation.
WARNING
Do not allow the released oxygen, which enhances flammability, to accumulate in an
enclosed area.
The nitrogen generator's vent is equipped with a 3/8" compression fitting. Install piping
from the vent to the atmosphere if the liquid nitrogen plant is operating in an enclosed,
unventilated area.
CAUTION
To prevent damage to the nitrogen generator, do not block or restrict the flow from
the nitrogen generator’s vent. To prevent accidental flow blockage, do not install a
valve in the vent line.
If the system is installed in an enclosed, confined space, an oxygen monitor/alarm should
be installed to protect against an elevated or deficient oxygen level. As mentioned
previously, the nitrogen membrane will vent oxygen into the room during normal
operation. If not properly vented, or if a leak in the vent line develops, the oxygen level in
the room may rise to a dangerous level.
If the liquid nitrogen dewar ruptures or develops a leak, the liquid nitrogen will quickly
vaporize and may create dangerously low oxygen concentrations in the ambient air.
Being odorless, colorless, tasteless, and nonirritating, nitrogen has no warning properties.
Humans possess no senses that can detect the presence of nitrogen. At low oxygen
concentrations, unconsciousness and death may occur in seconds and without warning.
WARNING
Personnel, including rescue workers, should not enter areas where the oxygen
concentration is below 19.5% unless provided with a self contained breathing
apparatus or air-line respirator.