Section 18A - Diagnostic Valve Leak Tests - Fresenius Medical Care 2008K2 Troubleshooting Manual

SECTION 18A - DIAGNOSTIC VALVE LEAK TESTS

Perform these tests ONLY as directed previously. Arbitrary performance may yield erroneous results!
ONLY the Balancing Chamber Valves, #31 through #38, will be tested! Do NOT run "auto" which tests
all valves!
A. AUTOMATED LEAK TEST PREPARATION
a) Return both dialyzer connectors to the shunt and close the door!
IMPORTANT!
b) Return the concentrate connectors to the rinse ports and go to RINSE PROGRAM!!
c) Using a flashlight, THROUGHLY check for and repair ANY leak located!
d) Enter Service Mode → Diagnostics → Valve Leak Test. When the [Test Status] data box says "Ready"
proceed to B. PERFORM IOS TEST
B. PERFORM IOS TEST
The IOS (Integrity Of System) isolates Chamber #69 and its tubing for leaks AND an IOS failure may cause
IOS must pass BEFORE testing the valves!
valves to fail falsely!
a) Select the screen's [Valve Number] data box.
b) K machine use the up/down arrow keys until [Valve Number] = "IOS"; K
[Valve Number] = "IOS".
c) Press 'CONFIRM' and allow "Prep" and "Testing" to complete then read the [TEST STATUS] box. TWO
(2) possible scenarios:
1) IF "Failed": REPEAT the IOS test. If (and ONLY if) it passes see Scenario #2 below. If it fails
again turn the machine off then see
2) IF "Passed": Perform parts a THROUGH d below until ALL EIGHT Balancing Chamber Valves,
#31 through #38, have been tested:
a) Select the [Valve Number] box THEN: K machine use the up/down arrow keys until [Valve
Number] = a Balancing Chamber Valve*; K
Number] = a Balancing Chamber Valve*.
* The 'fresh' valves, #31, #33, #35 and #37 are tested first followed by the 'spent' valves, #32,
#34, #36 and #38.
b) Press 'CONFIRM' and allow "Prep" and "Testing" to complete.
c) If a valve passes ONCE consider it "passed" and continue to part d. If a valve fails repeat parts a
and b on THAT valve. If it fails again consider it "failed" THEN NOTE the valve number(s) AND
continue to part d.
d) Repeat parts a THROUGH d until ALL EIGHT balancing chamber valves have been tested then
refer to Table 15
(page 527).
AUTOTEST- 1.0.0
(next page):
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
2
machine use the +/- keys until
(page 528).
2
machine use the +/- keys select until [Valve
Page 527