Service manual Phyaction V
Service manual version 0.1
Page 12
9.
Upgrades
9.1
Vacuum pump switches of after 2 minutes even when current is flowing
The Phyaction V has an automatic current sense circuit. If the unit doesn’t detect any current for
more than 120 sec, the vacuum is switched off and the vacuum cups will be released from the
patient.
We have noticed that is some cases, the vacuum is switched off, even when there is current
detected. In order to solve this, the unit needs to be modified.
Step 1: open the unit
Step 2: remove the main PCB from the unit
Step 3: remove R247 from the main PCB (photo below). Be careful about the 2 adjacent
capacitors.
Remove R247
Step 4: install a 1Mohm resistor between C233p+ and CON216p7 (photo below).
Install 1Mohm resistor
Step 5: change the hardware code into 1AAB
Step 6: close the unit and perform a functional and safety test
Summary of Contents for Phyaction V
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