Ventilator Service — Level 2: Fault-Finding
From the alarm or failed test to the failed module: gas supply, mixing, flow and pressure sensing, valves, electronics
Part of the program: Ventilator Service Engineer — full program (13 h) →
Level 1 taught you to keep a ventilator safe, maintained and verified. Level 2 starts when it fails anyway: a self-test step that will not pass, a volume that reads low, a PEEP that will not hold, a machine that reboots on battery. This course teaches the engineer to read the event log and the failed test step, place the fault on the gas path or in the electronics, and follow it through the supply, the blender or turbine, the sensors, the valves and the power chain to the module that has actually failed - then prove the repair with the manufacturer's calibrations, an independent analyser and a clear record.
The flow sensor was replaced three times. The nebuliser had no filter.
- Flow sensors, oxygen cells and exhalation valves are replaced because the self-test named them, while the real cause - wet air, a missing filter, a cracked seal, a weak supply - sits upstream and kills the new part too.
- Intermittent faults are 'fixed' by a restart and come back at night on a patient, because nobody recorded the conditions, the log and what was changed.
- After a repair the machine passes its own self-test and goes back to the ward without an independent check, so a sensor and a calibration that agree with each other but not with reality reach the patient.
After the course you can
Curriculum
Turn an alarm, a failed self-test step or a clinical complaint into a located fault, using the event log, the subsystem map, a test lung and a gas flow analyser, and know what you may and may not change.free
22 min02Gas supply and mixing: inlet filters, regulators, blenders, turbines, compressors and oxygen sensors
Prove or exclude a supply problem under flow, and locate a fault in the inlet, regulator, blender, turbine, piston pump, compressor or oxygen sensor of a ventilator.22 min03Flow and pressure sensing: sensor types, transducers, zero and span, calibration and drift faults
Locate a flow or pressure measurement fault to the sensor, its sensing line, its board input or its calibration, and calibrate in the order and conditions the manufacturer requires.23 min04Valves: inspiratory and proportional valves, the expiratory valve and PEEP, safety valves, leaks and sticking
Locate a fault in the inspiratory, expiratory, PEEP, safety or hold valves of a ventilator, isolate internal leaks by sections, and know when a valve needs cleaning, a new seal, replacement or recalibration.23 min05Electronics and power: boards, batteries and power management, displays and encoders, communication errors
Locate faults in a ventilator's boards, power supply, batteries, display, controls and internal communication to the replaceable module, and restore software and configuration only by the manufacturer's procedure.23 min06Neonatal and non-invasive ventilation: nCPAP and SiPAP drivers, small volumes, leaks and typical faults
Fault-find neonatal ventilators and nCPAP/SiPAP drivers and non-invasive ventilators, taking into account small volumes, proximal sensing, intentional leaks and leak compensation, and test them with the right lung and settings.22 min07Performance verification after repair: test lung procedures, analyser checks, alarm checks and electrical safety
Choose and run the verification a specific repair requires, avoid test lung and analyser artefacts, read the pattern of deviations as a diagnosis, and decide whether a result proves the repair.22 min08Complex cases and return to service: intermittent faults, multiple causes, records and who decides fitness for use
Work through intermittent and multi-cause ventilator faults to the root cause, write a record that proves the repair, and hand the decision on fitness for use to the right person with the right evidence.23 min—Exam
25 · 40 min · 75 %
The certificate
Pass the exam and get a certificate of course completion with your name, hours and score. Every certificate has a unique number and a public verification page, so an employer or a customer can check it in one click. It confirms completion of the course; it is not an educational document (diploma) and not a manufacturer authorisation.
Who it is for
Who it is for
- Engineers who have completed Ventilator Service — Level 1 or have equivalent experience
- Field engineers in independent service companies
- Hospital biomedical / clinical engineering teams that diagnose and repair ventilators in-house
Who teaches
Written by a service engineer working with medical equipment since 2014, including 6.5 years at GE Healthcare and service supervision at Mindray, together with the engineers of Service Engineer.
FAQ
Is this manufacturer training?
No. It is independent, vendor-neutral training. It does not replace the manufacturer's service procedures, does not grant authorisation or access to service software, passwords, options or licences, and every repair must still be followed by the calibrations and checks the manufacturer requires.
Do I need Level 1 first?
Level 1 is the prerequisite: the pneumatic chain, gas supply, engineer and patient safety, the self-test, the PM kit, verification with an analyser and the report are assumed here and not repeated. The Repair Fundamentals course on pneumatics is strongly recommended.
Does it teach board-level repair?
It teaches fault-finding to the subsystem and the replaceable module. Component-level repair of boards and power supplies is covered in the Repair Fundamentals course on electronics.
Will I work on a ventilator connected to a patient?
Never. Every test in this course is done with the patient disconnected and on another means of ventilation, on a test lung, by trained personnel following the manufacturer's documentation. The course never asks you to bypass alarms, interlocks or protection.
Which machines are used as examples?
Turbine, piston and compressed-gas ventilators, transport and home ventilators, an anaesthesia ventilator and a neonatal nCPAP driver, using public and service documentation as examples. The principles are written to hold across brands.
What does the certificate say?
Your name, the course, the hours, the date and your exam score, with a unique number and a public verification page.
Can my company buy seats for a team?
Yes: five seats and a progress overview for the manager.
Languages?
English and Russian.