3 . R e p a i r I n s t r u c t i o n s
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SW 9.xx
3.3.8.12 VEBK Test
open
offen
closed
geschlossen
PDA
VDA
UFP
FPE
FPA
VEBK
VDEBK
VABK
VDABK
VBP
VDE
RVDA
Fig. : Flow Diagram VEBK Test
Test VEBK1/2
VEBK is charged by the maximum delivery pressure from FPE (set at RVFPE). A
leakage of the valves leads to a pressure increase at PDA.
Test VABK1/2
VABK is charged by the maximum delivery pressure from FPA (set at RVFPA). A
leakage of the valves leads to a pressure increase at PDA.
LLC Test
Code
LLC Test Steps
LLS Test Steps
LLS Test
Code
12.
1275x
VEBK test
FPE = 800 ml/min
FPA = 500 ml/min
Valve Status:
VEBK1/2, VABK1/2 --------------------- closed
VDEBK1/2, VDABK1/2 ----------------- opened
VBP, VDE, VDA ------------------------ opened
Final Condition:
Test timeout 60 s or wait for inversion of
LLS_SELFTESTBIT from LLS
Start condition for the test (5 s):
1.
Correct valve position
2.
UFP stopped (UF rate < 500 ml/h)
3.
+300 mmHg < PDA < +450 mmHg
Test 10 s,
max. deviation
∆
PDA < 25 mmHg,
Acknowledge with inversion of LLS_SELFTESTBIT
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