Shel lab BACTRON300, Инструкция по установке и эксплуатации, Страница: 46 / 86

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OPERATION (CONTINUED)
E
XITING THE
C
HAMBER
Withdrawing your arms through the arm ports creates a negative pressure in the chamber. If done too
quickly, the motion can draw in outside oxygenated atmosphere through the sleeve cuffs or manometer.
Use the following steps to exit the chamber without pulling in aerobic atmosphere.
1. Check that the exterior and interior pass box doors are closed and latched to avoid drawing
aerobic atmosphere in through the pass box.
2. Charge the sleeves with gas to help prevent binding while withdrawing from the chamber.
a. Depress the GAS foot pedal (left) for one or two seconds.
3. Pick up one arm port door. Slowly withdraw the arm holding the door from the chamber.
a. Close and seal the arm port door. See the Install the Arm Port Doors procedure on page
24 for how to correctly seal the arm port doors.
b. Pick up, withdraw, and close and seal the other arm port door.
4. Withdraw arms from the sleeves one at a time.
Door Seal Check
Carry out the following steps to make sure the arm port doors are sealed.
1. Hold the sleeves away from the BACTRON, allowing them to fill with air.
2. Twist and firmly grip the sleeves approximately 3 to 4 inches (7
– 10cm) behind the cuffs to
create seals.
3. Gently and slowly push both sleeves towards the doors. This will cause the sleeves to balloon.
4. If the manometer bubbles in response to the pressure in the sleeves, one or both arm port doors
are not sealed correctly.
Note: Do not physically press on the arm port doors to test the seals! Doing so, especially doing
so routinely, may warp the acrylic glass front panel or damage the doors and arm ports.
5. If the arm port doors are not correctly sealed, don and cycle the sleeves, then reseat and reseal
the doors.
a. You may also test one door and sleeve at a time. When doing so, use your free hand to
manually plug the GAS / VAC port on the inside of the arm port not being tested. This
prevents air from escaping into the GAS / VAC supply line and out the other port.