Isolate For High Loading Pressure - Fresenius Medical Care 2008T Troubleshooting Manual

LEAKING- 1.1.0 ISOLATE FOR HIGH LOADING PRESSURE
ENSURING the water is on, this procedure checks if VERY HIGH Loading Pressure may be causing a leak!
a) ENSURING the Loading Pressure gauge (yellow connector) reads 0 psi before inserting it,
into the red Acetate/Acid rinse port.
b) To avoid error read parts c AND d BEFORE performing them!
c) Turn the machine on. When "Press CONFIRM For Service Mode" appears press 'Enter'.
d) Figure right, WHEN "System Initialization" reaches 90% does
the gauge EXCEED 30 psi OR 'peg' the gauge's needle i.e.
much more than 30 psi?
Yes Pressure more than 30 psi! Turn the machine OFF then proceed to
number
No Pressure less than 30 psi! With the Main Service Mode menu REMAINING up, allow two (2)
FULL minutes OR until if an active leak reoccurs. TWO (2) possible scenarios 1) or 2) below:
1) IF (and ONLY if) a leak DOES NOT reoccur: A possible Secondary Side Leak. See
procedure number
2) IF leak reoccurs: Listed under PRIMARY SIDE LEAK (below) are TWELVE (12) possible
scenarios (not inclusive):
page 602
Per Figure 106 (
1) IF from Loading Pressure Valve #65 (Figure right):
Tighten the Valve's Phillips screws. If the leak continues
replace Valve #65.
2) IF from the Heat Exchanger BODY: Proceed to page
725
, HEAT EXCHANGER LEAKING EXTERNALLY
3) IF from the Heat Exchanger's TUBING:
A) Secure the tubing with tie wraps; B) Check Inlet
Water Pressure Regulator per the CALIBRATION
PROCEDURES; C) Leaving the gauge installed, turn
the machine off and allow twenty (20) minutes. If
pressure exceeds 22 psi then Regulator #61 may be
bad (to LOCATE #61 refer to
602
)).
4) IF from a RINSE PORT (Figure right): Insert a dull
probe into the port to move the poppet valve back
and forth several times. If the leak continues replace
the rinse port.
Scenarios 5 THROUGH 12 next page
LEAKING- 6.0.0.
LEAKING- 2.0.0
PRIMARY SIDE LEAK:
), proceed according to where the leak is seen:
page
Figure 106 (
2008T Troubleshooting Guide
P/N 490292 Rev. A
page 603
( ).
SLAM
* it
page 613
, procedure
Page 600