Operation (continued) – Shellab BACTRONEZ User Manual

Page 33

Advertising
background image

33 |

P a g e

OPERATION (CONTINUED)

Establishing an Anaerobic Environment Continued

Note: If you have opened the left armor port door to install the catalyst, reinstall and secure the

door now. Leaving the left arm port unsecur

ed may cause AMG to “stream” through the

chamber directly to the door, rather than building up and pushing out aerobic atmosphere,
from the left side of the chamber to the right.

8. Reinstall the right arm port door and secure it. From the snugly tightened positioned,

loosen the knob on the on the right arm port door by about half a turn. This should create a
small leak that aerobic atmosphere can be pushed out through.

a. AMG should pulse rather than flow continually into the chamber. The Chamber

Gas light should activate for 1 to 2 seconds before deactivating for 1 to 2
seconds. This will be accompanied by a clicking sound that is the gas solenoid
opening and closing.

b. If the interval between pulses are longer than 1 to 2 seconds, or if there is no

pulsing, slowly loosen the arm port knob until the interval decreases.

c. If gas continually pulses into the chamber, tighten right arm port door knob until

an injection interval of 1 to 2 seconds is established. Continual streaming
means that gas is likely streaming through the chamber directly to a door
rather than accumulating and creating the turbulence necessary to purge the
chamber atmosphere.

Note: Depending on ambient conditions (temperature of the room and humidity) there may be mild

or heavy condensation on the inside of the chamber during the gas purge. This is due to the
formation of water vapor during the catalytic reaction. Condensation should dissipate by the
end of the purge as oxygen decreases and the condensate controller removes water vapor
from the chamber atmosphere.

9. End state: When the purge process has gone through 200 psi of AMG or gone on for 2

hours (whichever happens first), tighten and secure the right arm port door. Then carry out
the

Installing the Sleeve Assemblies

,

Chamber Entry

, and

Verifying Anaerobic

Atmosphere

procedures on the following pages.

Advertising