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Frequently Asked Questions

Sharing Answers
to Common Inquiries

We talk to a lot of customers, and hear many of the same questions. Here is a list of several of the most common, along with a brief answer. In-depth answers can be found in Caron’s Service manuals, Preventative Maintenance Kit instructions or Field Installed Accessory instructions.

What type of water quality does your equipment require?

All Caron chambers require pH-neutral water of between 50K Ohms and 1Meg Ohms resistivity. This type of water can be obtained from distilled, reverse osmosis (RO) or deionized (DI) sources. Caron offers a system, the CRSY condensate recirculator, for facilities without a house water system.

Less pure water, with resistivity less than 50K Ohms, can lead to difficult to remove mineral deposits on system components, or within the chamber. Water of greater purity, such as ultrapure or Water For Injection (WFI) above 1 Meg Ohm can attack key unit components, causing damage not covered under warranty.

Do you sell all the parts needed to perform a Preventative Maintenance in a kit?

Caron offers Preventative Maintenance Kits for all current models and accessories.  These items can either be purchased here (select Browse All Spare Parts), or you can email our parts department at .  Please have the equipment serial numbers available so we can better assist you.

Why is the front trough of my chamber overflowing with water?

Caron's chambers drain by gravity so any rises, loops or kinks in the drain trubing will cause water to back up into the front trough.  Make certain all drain tubing is flat against the floor.

Why is my heated only chamber running above set point?

Heated only chambers are not equipped with a refrigeration system so they are very sensitive to the environment and other heat sources located next to them.  If your heated only chamber is running above set point, record the ambient temperature of the lab and make certain your set point is at a minimum of 10C higher than the ambient temperature.  Then make certain there are no other heat sources located near your heated only chamber.  Your chamber can absorb that external heat load which can cause the chamber to run above set point.  Heat sources can include furnace vents, windows without blinds or other pieces of equipment next to or stacked with your chamber.

What size air compressor do I need for my dryer package?

Caron's requirement for a compressed air source when connecting to our dryer package is as follows:  It uses compressed air at 90 to 100 psig to operate.  Maximum airflow required is 480 SCFH (8 CFM).  Of this 300 SCFH (5 CFM) is injected into the chamber as dry air and 180 SCFH (3 CFM) is exhausted into the room after being used to regenerate the desiccant.  Particles of dirt or rust, as well as large amounts of condensed moisture or oil that may be in the compressed air line feeding the dryer must be removed from the air stream before it enters the dryer via an in-line filter.

Why does my independent sensor read higher under the lights than what the chamber is displaying?

The radiant heat being given off from the light bulbs will greatly increase the surface temperature of your independent sensor showing that the chamber is not running at set point.  Our chambers control air temperature behind one of the false walls to prevent a false reading from the radiant light heat.

 Particles of dirt or rust, as well as large amounts of condensed moisture or oil that may be in the compressed air line feeding the dryer must be removed from the air stream before it enters the dryer via an in-line filter.

Can I have accessories added to my chamber after it arrives at my facility?

Yes, there are several accessories that can be added in the field.  A complete list of field installed accessories is located here.

What should I do when an "ALERT" pops up on the screen?

Alerts that pop up on the touchscreen are reminders that it's time to perform Preventative Maintenance, calibrate or re-qualify your piece of equipment.  You can purchase Preventative Maintenance Kits here (select Browse All Spare Parts).  You can also contact us at  for more information and to place an order, or you can contact us at  to obtain a quote for Preventative Maintenance/Calibration services.  Please have the equipment serial numbers available so we can better assist you.