Gambro AK 95 S Service Manual page 242

4.4
NOTE
Make sure that the machine does not perform a taration (self calibration)
during the measurements.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Limit values for PLT
AK 95 S (100V)
AK 95 S (110V)
AK 200 S (115V)
AK 200 ULTRA S (115V)
AK 95 S (230V)
AK 200 S (230V)
AK 200 ULTRA S (230V)
11:8
PLT - Patient Earth Leakage Current Test
Let the machine pass FCH.
The safety couplings of the dialysis fluid tubes shall be con-
nected to the safety tester via an accesspoint.
Dialysis fluid tubes
AK-machine
Dialysis fluid tubes
Mains voltage to
the AK-machine
Note! There must be a main flow during this test. Check that the
Bypass button is switched off.
Measure the patient leakage current with the safety tester.
Take the highest AC-reading when the machine is running.
Take the highest DC-reading when the machine is running.
Invert the phases of the mains voltage. The machine might
restart.
Take the highest AC-reading when the machine is running.
Take the highest DC-reading when the machine is running.
Check that the highest measured readings don't exceed the limit
values in following table:
AC
Max 100µA
Typical <10µA
Max 100µA
Typical <10µA
Max 100µA
Typical <10µA
Max 100µA
Typical <10µA
Max 100µA
Typical <10µA
Max 100µA
Typical <10µA
Max 100µA
Typical <10µA
Electrical Safety Inspections for AK-machines
Patient
leakage
Safety
current
tester
mains prot. earth leakage current
earth enclosure
Access-
leakage current
alternative direct differential alternative
equipment patient
patient leakage current
point
AC/DC lead ISO
lead to GND lead to lead
outlet power
Inlet Power
open E. open N. ev. M.
DC
Max 10µA
Max 10µA
Max 10µA
Max 10µA
Max 10µA
Max 10µA
Max 10µA
230 VAC
HCEN12190 Rev 05.2006