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Tips and tricks
4 Tips and tricks
4.1 Checking the system
This section gives a methodical troubleshooting procedure for when the vacuum system leaks.
Seal the outlet opening on the inside of the prosthetic socket with a small piece of paper and air-tight adhesive
tape (e.g. PVC tape).
Activate the vacuum pump until vacuum of 500 hPa to 850 hPa is reached.
•
•
Check whether the vacuum is maintained.
The fault is in area 1.
•
Check the prosthetic socket and sealing sleeve for
leaks and fix the fault.
The fault is in area 2.
•
Place the manometer with a T-piece between the
socket connector and the vacuum pump.
•
Seal the hole on the inside of the prosthetic socket
with a piece of air-tight adhesive tape. This is how
the hose connection and the socket connection are
checked.
Activate the vacuum pump until vacuum of 500 hPa
•
to 850 hPa is reached.
•
Check whether the vacuum is maintained.
•
If the vacuum is maintained, reseal the socket con
nector with adhesive. Then recheck the system.
The fault has been fixed.
24 | Ottobock
To check the system for leaks, the prosthesis is divided
into areas.
•
1
•
•
2
3
The fault is in area 2 or 3.
•
•
•
The fault is in area 3.
•
•
The functional ring is defective.
•
Area 1: Prosthetic socket and sealing sleeve
Area 2: Socket connector and connection to the
vacuum pump
Area 3: Vacuum pump (valves or functional ring)
Connect the manometer directly to the suction con
nection of the vacuum pump.
Activate the vacuum pump until vacuum of 500 hPa
to 850 hPa is reached.
Check whether the vacuum is maintained.
Replace the valves of the vacuum pump.
Check again whether the vacuum is maintained.
Replace the functional ring.
Harmony System
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