Supplemental Manual
High-
IsoDry™ RH Control System
©
Copyright 2017 Terra Universal Inc. All rights reserved • Revised November 2020 • Document No. 1788-26
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: (714) 578-6000 • FAX: (714) 578-6020
10
4.0
Desiccator Service and Maintenance
•
Do not clean acrylic with alcohol or other strong cleaning agents.
•
Do not expose static-dissipative PVC to extreme heat or direct sunlight.
•
A Terra stainless steel shield is required on the bottom of each static-dissipative PVC desiccator
chamber to prevent scratching.
CAUTION
Refer to the
Doc. #1800-40:
Desiccators and RH Controllers
for information regarding the care and service of your
desiccator.
5.0
Troubleshooting
Terra Universal's desiccators are designed to provide years of reliable, efficient service. If you should experience any
problems that arise during operation of your desiccator with the Dual Purge System and NitroWatch, refer to the
appropriate troubleshooting procedure below. If the problem persists, or if you encounter any problems not described
below, call Terra Universal for additional assistance.
Do not attempt to disassemble any of the modules. Contact Terra for assistance.
WARNING
PROBLEM:
System won’t turn on.
POSSIBLE SOLUTIONS:
1.
Make sure that the power cord of the Dual Purge System is plugged into an appropriate outlet and that
the two telephone cables to the NitroWatch and desiccator are properly connected.
2.
Make sure that the power switch of the Dual Purge System is in the ON position.
3.
Check the fuse of the Dual Purge System. The 2 amp fuse, mounted on the circuit board controller, is
accessible once the stainless steel housing cover is removed.
PROBLEM:
System stays in high purge at all times.
POSSIBLE SOLUTIONS:
1.
Check door seals of the desiccator to make sure that there are no leaks.
2.
If you require a very low humidity level, you may need to increase the flowmeter setting on the Dual
Purge System. You should increase the flowmeter setting until the system maintains a humidity level a
few percent below the humidity set point without switching to the high-level purge. Remember, though,
that the Dual Purge System should be able to maintain the humidity level you require with a low-level
