Dialysis Equipment Service — Level 2: Fault-Finding
From the alarm to the failed module: hydraulics, balancing, conductivity, heater, blood side, disinfection and water treatment
Part of the program: Dialysis Equipment Service Engineer — program (8 h) →
Level 1 taught you to keep a dialysis unit safe, disinfected and maintained. Level 2 starts when a machine keeps failing anyway. This course teaches the engineer to read the alarm and self-test history for the first cause, trace the fault on the hydraulic diagram of the exact machine, split the blood side from the dialysate side and the machine from its water and concentrate supply, and follow the fault through pumps, valves, degassing, balancing, conductivity, the heater, the blood module, disinfection and the water plant to the part that has really failed, without ever weakening a protective system. It ends with peritoneal cyclers, multi-cause cases and the tests and records that let the responsible person decide whether a machine may treat patients again.
The self-test passed. The display said 14 mS/cm. The fluid was wrong.
- Valves, filters and sensors are replaced one after another because an error named them, while the real cause, a suction-side air leak, scale, an old concentrate batch or a reused filter, keeps destroying the new parts.
- A machine passes its self-test and goes back to patients after a board change, although the self-test only checks that alarms react and nobody verified the fluid with an independent meter.
- Machines and loops are released after disinfection or repair without a completed programme, a residue test, an electrical safety test or a record that tells the responsible person what was actually proved.
After the course you can
Curriculum
Turn an alarm or a failed self-test into a located fault by reading the history, tracing the hydraulic diagram, splitting blood side from dialysate side and machine from supply, and using test modes without ever weakening a protective system.free
22 min02Hydraulics at Level 2: pumps, valves, degassing, flow and pressure, leaks and air
Read the pressure profile of a hydraulic module, decide whether a fault is a pump, a valve, a restriction, air or a leak, and confirm it with measurements at the manufacturer's points.24 min03Balancing and ultrafiltration: chambers, flow sensors, the closed loop and UF errors
Explain how a given balancing design can lose accuracy, use pressure-holding tests and volume checks to locate the cause of a UF error, and verify UF accuracy by the manufacturer's procedure.24 min04Conductivity and temperature: concentrates, mixing, cells and calibration, heater and independent protection
Diagnose conductivity and temperature faults from the pattern of the reading, verify cells and sensors against references, and confirm that the independent protective channel really sends wrong fluid to bypass.24 min05The blood side: blood pump, pressure transducers and protectors, air detector, venous clamp, blood leak detector and battery
Fault-find the blood module with a test line and saline, verify each protective function with the manufacturer's checks, and know which faults must take the machine out of use at once.24 min06Disinfection and decalcification: heat and chemical programmes, failed disinfection, residue checks and chemical safety
Find out why a disinfection or decalcification programme failed or did not work, verify the agent, temperature and rinse-out, and handle disinfectants without creating a hazard for staff or patients.23 min07Water treatment at Level 2: RO faults, conductivity and chlorine monitoring, loop disinfection, microbiology and responsibility
Diagnose a failing RO plant from its trend data, verify its monitors, take part safely in loop disinfection, and treat microbiology and endotoxin as laboratory results within a clear chain of responsibility.24 min08Peritoneal cyclers, complex cases and return to service: performance checks, electrical safety, records and who decides
Handle peritoneal cycler faults within the engineer's role, work through multi-cause cases with a timeline, and return any dialysis equipment to service with tests and a record that let the responsible person decide on clinical use.25 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 Dialysis Equipment Service — Level 1 or have equivalent experience
- Field engineers in independent service companies
- Hospital biomedical / clinical engineering teams that maintain haemodialysis machines, water plants and peritoneal cyclers
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 or options, and every repair must still be followed by the calibrations and checks the manufacturer and national rules require.
Do I need Level 1 first?
Dialysis Equipment Service — Level 1 is the prerequisite: the flow path, the protective systems, infection and chemical safety, the water plant and planned maintenance are assumed here and not repeated. The Pneumatics, Electronics and Electrical Safety courses are recommended alongside.
Will I work on machines connected to patients?
No. Every test in the course is done with no patient connected, using test lines, saline and the manufacturer's tools. The course never asks you to bypass, silence or weaken a protective system.
Does it cover water treatment and cyclers?
Yes: one lesson on RO plants, monitoring, loop disinfection and microbiology, and one lesson that includes peritoneal cyclers, complex cases and return to service.
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.