Fresenius Medical Care 4008 S Service Manual

Chapter 11: Functional description
Fresenius Medical Care 4008 S (Version V10) SM-EN 7/01.13 11-23
11.1.2.4 V39 Test
The following requirements must be met for carrying out the V39 test:
– The test is only carried out in mandatory rinse mode and during the
last minute.
– P.C.B. LP 632 (CPU 2): Field 2, DIP switch 5 to OFF
Mandatory rinse
≤ 1 min
DAC degas. pump
= 200
Wait for 10 s
Measure for 5 s:
Mean pressure value
dav1
Measure for 5 s:
Mean pressure value
dav2
Open: V39;
Wait for 5 s
DAC degas. pump
= 220
Open: V26, V91,
V99, V100, V31,
V33, V35, V37;
Closed: V39
Pressure
increase?
(dav1 + 20 mmHg
< dav2)
yes
no
Test passed
Delete mandatory rinse
Pressure compensation
Evacuate rinse chambers
DAC degas. pump
= 200 ?
no
yes
Test failed
Pressure compensation
„V39 Failure“

Fresenius Medical Care 4008 S Specifications

General

Brand	Fresenius Medical Care
Model	4008 S
Category	Medical Equipment
Language	English