Labconco Protector Controlled Atmosphere Glove Box - Manual (Page 41)

Chapter 5: Using Your Glove Box
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Glove Box Pressure Control – Operation Mode 1
The Pressure Control mode will allow the user to set a high pressure limit up
to +5 inches water column and a low pressure limit to -5 inches water column
[+/- 12.6 mBar or +/- 1245 Pacals]. Set these high and low pressure limits
with the keys adjacent to the “UP” and “DOWN” arrows on the display.
Once these limits are set, and the START/STOP key is pressed, the Pressure
Controller will automatically control the gas inlet valve, gas outlet valve, and
the power to the outlet receptacle for a vacuum pump. Pressure in the Glove
Box Main Chamber will be displayed inside the glove box icon on the display
screen.
Manual control keys for evacuation “PURGE” and “FILL” (located along the
bottom of the display) will allow the corresponding valves to be controlled by the
user to increase or decrease the pressure inside the glove box. Note: These manual
keys will not operate the valves when the pressure is outside the limits of +/- 5
inches of water [+/- 12.6 mBar]. A three-position footswitch is included with the
Automatic Pressure Controller. The footswitch provides manual foot control of the
gas inlet and vacuum outlet valves. The pressure inside the glove box will be
displayed inside the glove box icon on the display screen.
An audio alarm will actuate if the pressure exceeds the maximum limits of +/- 5
inches of water. An “alarm reset” key (identified by the musical icon) is provided to
mute this alarm. The alarm will reset automatically when the pressure returns within
+/- 5 inches [+/- 12.6 mBar].
Manual
Purge
Manual
Fill
Start/Stop
Setup
Increase
Upper Limit
Decrease
Upper Limit
Mode Key
Mute/Alarm
Increase
Lower Limit
Decrease
Lower Limit