Installation and Operating Guide
Smart
® Desiccator
Copyright 2017 Terra Universal Inc. All rights reserved. • Revised August 2020 • Document No. 1800-16
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: (714) 578-6000 • FAX: (714) 578-6020
7
PROBLEM:
The digital display is flashing “rH high”.
EXPLANATION:
The chamber has been in high-flow nitrogen purge mode for an extended period of time (Factory
Default Alarm Setting: 180 Seconds). The alarm will deactivate when the chamber reaches the programmed set
point.
POSSIBLE SOLUTIONS:
1.
Make sure that the doors are properly closed.
2.
If the relative humidity levels are not falling, you may need to increase the flow from the nitrogen gas
supply (not to exceed 80 psi) or use nitrogen of a higher purity.
3.
Check the door seals of the desiccator to make sure that there are no visible gaps. The flexible gaskets
are designed to allow a small amount of leakage in order to maintain a positive pressure environment.
PROBLEM:
The digital display is flashing “open door”.
EXPLANATION:
The chamber door has been open for an extended period of time (Factory Default Alarm Setting:
60 Seconds).
POSSIBLE SOLUTIONS:
1.
Make sure that all chamber doors are closed.
PROBLEM:
The desiccator is leaking excessively.
POSSIBLE SOLUTIONS:
1.
Check the condition of the gasket on the desiccator. If the gasket is cracked or peeling, call Terra
Universal for a replacement.
2.
Check door alignment. Leaks may develop if doors are out of alignment.
