Quick-Start Operating Guide
Series 100 Polymer Glove Box
© Copyright 2004 Terra Universal Inc. All rights reserved.
• Revised December 2004 • Document No. 1800-42
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Terra Universal, Inc. • TerraUniversal.com • 700 N. Harbor Blvd. • Anaheim, CA 92805-2553 • TEL: (714) 526-0100 • FAX: (714) 992-2179
Glove Box with Dual Purge System Only
1.
Make sure that your glove box is placed on a level, stable surface, away from heat or chemicals that could damage it.
2.
Using 1/4" tubing (not included), connect your in-house gas supply to the “Gas In” bulkhead on the rear panel of the Dual
Purge System by loosening the Poly-Tite collar, inserting the tubing, and tightening the collar.
3.
Use another length of 1/4" tubing to connect “Internal Pressure,” on the rear panel on the Dual Purge, to the enclosure to
be monitored.
4.
Connect the “Gas Out” port of the Dual Purge System to the inlet of your glove box.
5.
Connect the “Purge Control” ports of Dual Purge and NitroWatch systems with a 4-conductor sensor wire (terminated with
easy-snap telephone jacks). If your application has no NitroWatch, leave this port open.
6.
Plug the power cord to a grounded receptacle. The Dual Purge operates on 110VAC, 60Hz or 220VAC, 50/60Hz. No power
switch settings are required.
7.
Zero Calibration:
Press and hold SET and UP buttons while power is turned ON.
This activates a pressure sensor zero calibration routine before the setup mode is started. The display will indicate “CAL”
before this calibration is performed. The zero value is set automatically and is not changeable via the pushbuttons.
Remember to disconnect all air pressure from both pressure transducers before performing a zero calibration. Any
pressure on the transducers while this routine is run will be subtracted from the readings during normal operation,
resulting in likely continuous low-pressure alarms.
8.
Initial Programming: Turn ON the Dual Purge System while depressing SET (the left button on the front control panel).
Each time you release and then press and hold the SET button, you will advance through the following control functions.
Use UP/DOWN to change default settings (shown in parentheses):
Prg1
Purge Delay (minutes): No. of minutes that the high purge remains active after the internal pressure level is
restored (default: 0).
Prg2
Purge Delay (seconds): No. of seconds that the high purge remains active after the internal pressure level is
restored (default: 60).
door
No. of seconds a door must remain open to activate OPEN DOOR alarm (defaults: 60).
Inactive in Glove
Box applications
.
beeP
State of the BEEPER enable (default: ON).
Glo
Activates GLOVE BOX control mode – press UP to turn ON and proceed to glove box pressure setting; DOWN
to turn OFF (default: ON).
Press
In GLOVE BOX mode, this setting lets you adjust the pressure (milli-inches WG) at which the high purge is
activated (default: 0.2).
Note:
complete the “Zero Calibration” procedure above (Step 6) before completing
this adjustment.
DonE
Settings are complete; press SET once more to begin operation.
Make a mistake? No Problem!
To reset the system, turn the system OFF while in setup mode and restart while
holding the SET button.
9.
Once programming is complete, turn the pressure regulator (the round knob on the right side of the Dual Purge control
panel) until the pressure gauge reads between 30 and 40 psi (use more pressure for larger glove boxes with 4 arm ports).
WARNING!!!: For safe operation, the incoming gas line must be regulated below 70psi.
10.
The Dual Purge System includes a flowmeter, which provides a continuous low-level purge to maintain a constant
positive pressure inside the cabinet. The flowmeter also ensures an uninterrupted nitrogen flow if power or system
electronics ever fail.
If continuous purging is desired, set the flowmeter so that the pressure gauge reads at least 0.1" WG when the system is
in low purge state. This setting is recommended if you require a very low humidity set point (less than 10%RH) or if the
air lock doors will be opened frequently. Continuous purging will tend to drive the humidity level very low.
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