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2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Page 477
PHT- 1.5.2 PRESSURE HOLDING TEST (PHT) THEORY
A)
DO NOT START THE TESTS TILL INSTRUCTED!
B) Understanding Pressure Holding Test (PHT) theory (steps 1 – 5 below) aids troubleshooting. If already
familiar with PHT theory see procedure number
(page 478)
C) Call debug screen 1 to locate
ATMP
AND
FILACT.
1)
The Pressure Tests begin with
“Remove Air”. This is a sixteen (16)
second Filling Program to
purge air from the hydraulics. During this
time
FILACT
= 1 then should go to and remain = 0.
2)
During “Get Neg TMP” the UF Pump strokes, every eight (8) seconds, to achieve
NEGATIVE PRESSURE.
ATMP
(Figure right) should increase to its TARGET of
more than negative 250 which causes the UF Pump to stop.
NOTE:
All
ATMP
readings (in mmHg) are from
Dialysate
Pressure Transducer #9
3)
When “Neg Flow On” appears a thirty (30) second STABILIZATION period begins followed
immediately by a thirty (30) second HOLD period. During STABILIZATION
ATMP
should settle
between negative 250 and 450. During the HOLD period
ATMP
should not change more than
+/- 20!
IMPORTANT NOTE:
If
ATMP
DOES NOT STABILIZE or HOLD the tests automatically return to
step #1
4)
During the very brief “Get Pos TMP” the fresh side balancing chamber valves
momentarily open to achieve POSITIVE PRESSURE then all eight (8) balancing
chamber valves close (i.e. Flow Off)!
ATMP
should
go to
about positive (+)350.
5)
When “Pos Flow Off” appears a twenty (20) second STABILIZATION period begins followed by a
thirty (30) second HOLD period.
During STABILIZATION
ATMP
is initially unstable but should settle
b180 and +350. During the HOLD period
ATMP
should not change more than +/- 30!
IMPORTANT NOTE: FILACT
should NOT = 1 during the Positive Tests!
D)
(page 478).
Содержание 2008K2
Страница 1: ...2008K K2 HEMODIALYSIS SYSTEM TROUBLESHOOTING GUIDE Part Number 507298 Rev H ...
Страница 197: ...2008K K2 Troubleshooting Guide P N 507298 Rev H Page 193 Figure 35 Hydraulics Top View Figure 36 Hydraulics Rear View ...
Страница 655: ...2008K K2 Troubleshooting Guide P N 507298 Rev H Page 651 Figure 132 Inside the Power Supply ...
Страница 668: ...2008K K2 Troubleshooting Guide P N 507298 Rev H Page 664 Figure 134 24 V Power Harness ...
Страница 673: ...2008K K2 Troubleshooting Guide P N 507298 Rev H Page 669 APPENDIX C BLOOD PUMP ERROR CODES ...