How to check an autoclave for tightness

Many users mistakenly believe that a tightness check is needed before every start. In fact, this is not the case.

If the autoclave works steadily, normally builds up and holds pressure, there has been no replacement of components or interference with the structure, additional checks are NOT needed.

However, there are several situations when a tightness test is mandatory.

The most common reason for checking is a pressure drop during operation. In this case, it is necessary to find the leak point and eliminate the problem before the next start.

Any independent intervention in the autoclave structure requires an additional check. This applies to: After performing such work, it is recommended to definitely check the tightness of threaded connections.

If the autoclave has not been used for more than a year, it is also worth performing a test before a new start.

During this time, the gasket may have lost elasticity, threaded connections may have loosened, and dirt may have remained on the flange, which prevents the lid from fitting tightly.

No, a separate tightness check of a new autoclave is not mandatory.

All UTEHO autoclaves undergo factory testing before being sent to the buyer. Each autoclave is checked for tightness and operability.

However, the first start is recommended to be performed in test mode — without jars or with a minimum amount of containers. This will help you better understand how the autoclave works, master the settings and use it confidently in the future.

The check is performed quite simply and does not require special skills. The autoclave can be either empty or filled with water. A hand pump can be used to build pressure, but it is much more convenient to use a cordless compressor.

The compressor is connected through the nipple, it allows you to set the required pressure on the digital display and automatically stops pumping after the set value is reached. Thanks to autonomous operation and USB charging, it is especially convenient for autoclave owners.

After several hours of standing, it is necessary to evaluate the pressure gauge readings.

If the pressure has changed by no more than one division of the pressure gauge, the autoclave is considered tight and ready for operation.

If the readings have noticeably decreased, it is necessary to find the leak point.

The simplest method of home diagnostics is to use an ordinary soap solution.

For this, the solution is applied to all suspicious connection points.

Where soap bubbles form is where the air leak point is located.

In fact, there are not many places through which an autoclave can lose pressure. Most often the problem occurs in the lid sealing area and is related to the gasket and clamps. In most cases, the problem is solved by tightening the fasteners or replacing the gasket.

The second common reason is leakage through threaded units. These include: In such a situation, re-sealing of the threaded connection is performed.

If the autoclave does not hold pressure and you cannot find the leak point yourself, you should not experiment with repairs.

Incorrect intervention can lead to damage to components or incorrect operation of the equipment.

In this case, it is better to contact the specialists of the UTEHO service center or technical support. Specialists will help quickly determine the cause and safely eliminate the malfunction.