Automated Leak Test Preparation; Perform Ios Test; Section 18A - Diagnostic Valve Leak Tests - Fresenius Medical Care 2008T Troubleshooting Manual
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- Operator's manual (370 pages) ,
- Calibration procedure (78 pages) ,
- Quick start manual (20 pages)
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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!
Return the concentrate connectors to the rinse ports
b)
Place the machine in RINSE PROGRAM
c)
d) Using a flashlight, THROUGHLY check for and repair ANY leak!
e) 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
multiple valves to fail falsely!
a) Press the screen's [Valve Number] data box, it turns bright yellow.
b) Using the keyboard's Pg Up (↑) key set the [Valve Number] box to "IOS".
c) Press 'Enter' then allow "Prep" and "Testing" to complete.
d) Reading the screen's [TEST STATUS] box, TWO (2) possible scenarios:
1)
IF "Failed" appears: 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" appears: Perform parts a THROUGH d below until ALL EIGHT (8) Balancing Chamber
Valves, #31 through #38, have been tested:
a) Press the screen's [Valve Number] box. Using the Pg Up (↑) key select 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 'Enter'. 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 (8) balancing chamber valves have been tested then
refer to
Table 15
(page 572).
IOS must pass BEFORE testing the valves!
AUTOTEST- 1.0.0
next page:
2008T Troubleshooting Guide
P/N 490292 Rev. A
.
(page 573).
Page 572
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