What Is a Suction Pressure Test?
A suction pressure test measures two key metrics: maximum vacuum (kPa or mmHg) and airflow rate (L/min). Per manufacturer manuals, maximum vacuum should be reached within 20 seconds. If it takes longer, machine performance may have degraded.
Standard Suction Specifications by Model
| Model | Max Vacuum | Airflow | Time to Reach |
|---|---|---|---|
| ATMOS LC27 | -550 mmHg / -73 kPa | 27 L/min | ≤20 sec |
| ASKIR 230/12VBR | -75 kPa | 16 L/min | ≤20 sec |
| ASKIR 36 BR | -80 kPa | 36 L/min | ≤20 sec |
| ASKIR 30 PROXIMITY | -80 kPa | 40 L/min | ≤20 sec |
| VACUAIDE 7325P | -550 mmHg | 27 LPM | ≤20 sec |
| ACCUVAC Basic | ≥500 mbar | 25 L/min | ≤20 sec |
| ACCUVAC Rescue | ≥500 mbar | 25 L/min | ≤20 sec |
| ATMOS C341 | -85 kPa | 42 L/min | ≤20 sec |
| NEW HOSPIVAC | -85 kPa | 90 L/min | ≤20 sec |
Common Causes of Weak Suction
- Wet hydrophobic filter — most common, replace the filter
- Kinked or cracked tubing — replace the tubing
- Collection jar too full — empty or replace
- Loose connection — check all joints
- Pump wear — requires professional repair
FAQ
The test itself takes just a few minutes. If issues are found requiring further diagnosis, additional time may be needed.
A basic functional test is possible: turn on the machine, block the tubing end with your finger, and feel if suction seems normal. However, precise vacuum and flow measurements require professional instruments.
We first try replacing filters and tubing. If the machine still fails after accessory replacement, pump repair may be needed. We'll provide repair recommendations and a quotation.