3. PERFORMANCE CHECK
Service information Phyaction 190 / 190i - Page 10
3.2
IEC 601-1 safety tests
For the full description of these tests we refer to the IEC 601-1 (1988) for Class I, Type BF equipment. Here is
just a short reminder list of the tests and the test limits.
Measurements limits
Insulation resistance mains
Insulation resistance applied part
Protective earth resistance
Enclosure leakage current normal
Enclosure leakage current open lead
Enclosure leakage current open earth
Enclosure leakage current reverse
Enclosure leakage current open lead
Enclosure leakage current open earth
Earth leakage current normal
Earth leakage current open lead
Earth leakage current reverse
Earth leakage current open lead
Patient leakage current normal
Patient leakage current open lead
Patient leakage current open earth
Patient leakage current reverse
Patient leakage current open lead
Patient leakage current open earth
Mains on applied part normal
Mains on applied part reverse
Dielectric strength A.P. + CASE to MAINS *
Dielectric strength MAINS + CASE to A.P. *
> 2.0 M
Ω
> 2.0 M
Ω
< 0.2
Ω
< 100
µ
A
< 500
µ
A
< 500
µ
A
< 100
µ
A
< 500
µ
A
< 500
µ
A
< 500
µ
A
< 1000
µ
A
< 500
µ
A
< 1000
µ
A
< 100
µ
A
< 500
µ
A
< 500
µ
A
< 100
µ
A
< 500
µ
A
< 500
µ
A
< 5000
µ
A
< 5000
µ
A
> 1500 V
rms
> 1500 V
rms
* These tests need only be executed if repairs have been made in the mains part or in the output circuits.
3.3
Performance check of the ultrasound treatment heads
In the software of the Phyaction 190 a special menu for service purposes only is included. Most of these
features can be used for trouble shooting. You can find the description of the other items of the service software
in chapter 4 TROUBLE SHOOTING, section 4.3
Description of the service software
. In this section the software
that is made to check the contact detection of the ultrasound heads will be described.
You enter the service menu by holding down the fourth and sixth blue function key while switching on the
device. As soon as you hear the buzzer you should release the keys. If you did it right, you will see at the
bottom of the start-up screen that the Phyaction 190 is in service mode. You can now enter the service menu by
holding down the yellow key for about 3 seconds. For software version 3.01 and up you should press the fourth
and sixth blue function key again to get the full service menu. You should be aware that the full service menu is
for service personnel only, so never tell a physiotherapist or doctor how to enter this menu, because they might
do things that will harm the appliance or the treatment heads. To check the performance of the ultrasound
head, select menu item 3
Check Vusi dry/wet
.
You can connect one or two treatment heads, the appliance will measure both at the same time if two heads
are connected. On the LCD you will see an instruction to make the heads dry. Make sure that no water or gel is
on the treatment surface of the heads. Then you press the green button (memory), as instructed. The
