Preventative Maintenance for AirStar and CoolStar caloric irrigators

Annual Preventative Maintenance service for AirStar and CoolStar caloric irrigators

Preventative maintenance is always a good idea for your medical devices and equipment.  Cut down on downtime by planning ahead.  In a previous post, we discussed what recommended maintenance procedures you should perform for your Difra AirStar and CoolStar.  Today, we will discuss recalibration and inspections for the caloric irrigators.

Recalibration for air pressure and temperature accuracy 

Keeping your AirStar irrigator clean or as is the case of the CoolStar, changing the filter monthly plus adding clean, distilled water to the jar helps to minimize problems.  However, annually, it is suggested to have your AirStar or CoolStar to be recalibrated for correct air pressure and accurate water temperature.

This is not something that can be completed by your team. You will need to send your caloric unit to us for this service. Our expert technicians will visually inspect your caloric irrigator, then perform a complete recalibration, including a computer print-out of the results that will be sent to you for your records.  It is very important to make sure the air pressure and temperatures are set to the manufacturer's specifications for testing accuracy as well as patient comfort.

Full system inspection

Prior to the recalibration, the technicians will inspect your caloric irrigator for any loose or frayed cables, control panel function, look for any error messages, loose components, or anything else not to manufacturer specifications.  If any area is found to be substandard, we will contact you with an estimated cost to complete those repairs, then the recalibration will be completed.

Loaner AirStar or CoolStar's may be available

Secure Health, Inc. may have a loaner irrigator for you to use while your device is being serviced.  This is based on the availability of our loaner irrigators.  Inquire when scheduling your caloric irrigator for service to the availability of a loaner.  If one is not available, we will schedule your work when a loaner is available.  

There is a charge for us to ship the loaner to you since it involves shipping to you two times and back to us two times.  We ship our loaner using a very durable "pelican" case to make sure our device and yours are secure and damage-free upon arrival at each destination.  For the return shipments, we send you a UPS label to affix to the outside of the pelican case.  

You simply remove our loaner caloric irrigator from the pelican case then place yours into the case exactly in the same position as you received the loaner. You will need to call UPS for a pick-up or have someone drop off the pelican case and irrigator at a UPS facility.

If you choose not to use our loaner, we will ask you to contact us prior to shipping your caloric irrigator to us.  When you call, we will issue you a Repair Order (RO) number.  Please make sure the RO number is on the UPS label or on the exterior of the shipping box. 

We also ask that you pack the irrigator in a sturdy box with plenty of packing material, including around the otoscope handle, to make sure it arrives in good shape, with no damage.  (The otoscope handle houses the thermostat and heating element)

It is your responsibility to make sure it is packaged appropriately and it arrives undamaged.  Any damages caused to your irrigator are at your expense.

Don't forget the speculum tips and CoolStar water filter

While we have your irrigator, you might as well order new speculum tips and if you have the CoolStar, order some spare water filters.  The speculum tips come in two sizes, the green ones are 2.5m and our blue tips are 4.0m.  By far, the green is the most preferred.  The tips have the twist-lock feature specifically made for your AirStar or CoolStar irrigator.

Each comes in a package of 100, minimum order of 100 per size.  Both sizes are priced at $18.95 per package of 100.  For the CoolStar filter, they are 3 to a pack at a price of $32.95 per pack.

Call or email us to schedule your AirStar or CoolStar for recalibration and inspection

Manage and reduce your downtime by ensuring your Difra AirStar or CoolStar are at peak performance and efficiency for your patient's comfort and test accuracy.  Give us a call or email us for pricing, scheduling then issue you your RO.

Call us at 260.804.4041 or email to [email protected]

Dan Scherer

Secure Health, Inc.



Note: prices are subject to change without notice

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Calorics: To Cool or Not to Cool?


Calorics: To Cool or Not to Cool?

How to Decide Between Air Vs. Water Cooled Air

Secure Health exclusively offers three caloric irrigator options that are all manufactured by Difra Instrumention, a global leader for more than 48 years. We sell the AirStar caloric irrigator, which is air-only and by a wide margin, our most popular caloric irrigator, accounting for an estimated 80% of our caloric sales.

Our second most popular caloric irrigator is the CoolStar. This one features water-cooled air.

We also offer the AquaStar caloric for those who want a water-only caloric irrigator.

Today, most VNG systems include an air caloric irrigator instead of a water-only irrigator. There are a couple of reasons for this. First, it's less messy using air compared to water.  Then there is the problem of patient comfort and a decreased likelihood of the patient becoming sick. Finally, there is no need for a water source in the room and the required plumbing that a water caloric demands.

In this post, we are not going to discuss the merits of water versus air calorics because this is a lengthy discussion with much debate regarding which is more effective or is most preferred. Instead, I will explore the differences between the AirStar and CoolStar irrigators to help you decide which one is the best choice for your needs. The water-only versus air debate will be addressed in a future post.

AIRSTAR: Air Only Caloric Irrigator

As I mentioned, the AirStar caloric is our most widely chosen irrigator option. This is due to ease of use and a reasonable price, which makes it a popular choice. It does a great job for most applications.

The AirStar features an otoscope-type handle with a lighted tip and magnified end, making insufflation much easier and accurate. The AirStar uses a twist-on speculum tip that you can source from your medical supply house or order from us. The main drawback of the AirStar is the lowest temperature it can adjust to is directly related to the ambient room temperature.

AirStar has four default temperature settings: 27°C, 30°C, 44°C and 47°C. You can easily change these default settings to your personal preference on all three types of the caloric irrigators. If your balance lab is overly warm or humid, the AirStar may not reach the lowest default setting of 27°C. If it does not, you can always use the 30°C setting until the ambient temperature comes back down in that room. It's not necessarily ideal, but it still is very workable.  In my opinion, I would recommend making a note of the low-temperature setting of 30°C in the notes section of your VNG software so whoever is doing your interpretation knows of the slight change in the temperature setting. It certainly is fine to provide more detail then fewer details in the notes section.

CoolStar: Water-Cooled Air Caloric Irrigator

The CoolStar has all the features of the AirStar:

--Otoscope handle

--Lighted tip

--Magnifier and

--Twist-on speculum tips

It also has a water container attached to the back of the irrigator. Basically, the pumped air generated by the CoolStar passes through tubes submerged in distilled water to cool the air.

The temperature defaults for the CoolStar are 24°C, 30°C, 44°C, and 47°C. As with the AirStar, these default temperatures can be adjusted to your preference. If needed, the CoolStar can reach a cool temperature of just 10°C. In the instance where your balance lab is too warm for an AirStar, you can now use the CoolStar to reach your targeted low temperature.  Plus, if you are not stimulating a response during irrigation, you have the option of using a lower temperature (as low as a 10°C) setting to see if a response can be generated without having to resort to using water or ice-water.

The CoolStar is rapidly gaining in popularity due to its wide temperature range while also possessing the other features of the AirStar. The CoolStar is a very versatile caloric irrigator at a reasonable price.

Now that I have introduced you to the features of both the AirStar and the CoolStar, can you answer the question, "To Cool or Not to Cool?" Which one will you choose, the AirStar or the CoolStar?

As always, if you have other questions about our full line of VNG products, please contact me.

--Dan Scherer, CEO

Secure Health, Inc.

260.804.4041 or [email protected]








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