Shel lab BACTRON300, Инструкция по установке и эксплуатации, Страница: 31 / 86

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CONTROL PANEL OVERVIEW (CONTINUED)
Main Control Panel Continued
Automatic Start / Reset Switch
The Automatic Start / Reset switch initiates or aborts the pass box auto cycle used to purge aerobic
atmosphere from the pass box. Pressing then releasing on the start side (left) initiates the auto
cycle. Pressing and holding on the Reset side (right) for three seconds aborts the cycle, then
restores the evacuated pass box to the workspace chamber pressure so that the pass box doors
can be easily opened.
Pass Box Gas Light
This light illuminates when anaerobic mixed gas is being injected into the pass box during the auto
cycle. The pass box Gas light
does not illuminate during manual gas injections.
VAC Light
The clear VAC pilot light indicates the when the pass box is atmosphere is being evacuated during
auto cycles. The Vac Light
does not turn on when manually cycling the pass box.
Manual Switch
The Manual Gas / OFF / VAC switch allows the user to manually cycle the pass box. Pressing the
switch to VAC (the right) vacuums down the pass box, lowering atmospheric pressure inside the
box.
Do not vacuum the pass box down to lower than -20inHg of pressure. Doing so risks
boiling sample media and may damage samples or equipment in the pass box.
Depressing the switch to GAS (the left) injects AMG drawn from the GAS 1 IN port into the pass
box. AMG injections increase atmospheric pressure in the pass box. Three iterations of evacuating
the pass box to -18inHg followed by injections of anaerobic mixed gas back to 0inHg cycles the
pass box. A slight overpressure of 0.5inHg after the final iteration can help make the pass box
doors easier to open.
Do not exceed 05.inHg of positive pressure.