Leaking- 3.3.0 Leak Between Flow Pump And Balancing Chamber Valves #36 And #38 - Fresenius Medical Care 2008K2 Troubleshooting Manual

LEAKING- 3.3.0 LEAK BETWEEN FLOW PUMP AND BALANCING CHAMBER VALVES #36 or #38
a) Secure the tubing clamps at Valves #36* and #38*. * To LOCATE these Valves refer to the Figure
previous page!
b) A psi gauge is used next. ENSURE it reads 0 psi before installing it!
c) Per the Figure below, install the gauge at the Flow Pump's OUTPUT (white) tubing.
IMPORTANT!
d) Tie wrap both side of the gauge tubing to prevent leaks and false readings.
e) Enter Service Mode → Calibrate Hydraulics → Flow Pressure but
instructions!
f) While watching the gauge, press 'CONFIRM' ONCE.
g) ENSURE the Flow Motor is rotating!
h) Normal pressure is between 35 and 36 psi. Does pressure EXCEED 38 psi OR 'peg' its needle i.e. much
more than 38 psi?
Yes More than 38 psi! Per the Figure above, turn Valve #78's nut COUNTERCLOCKWISE
(outward) attempting to adjust to between 35 and 36 psi. If it will not adjust Valve #78 may
be bad.
No Between 29 and 38 psi. TWO (2) possible scenarios:
1)
2) IF Flow Relief Valve #78 is NOT leaking! If the leak continues, there may be a bad
IF (and ONLY if) Flow Relief #78 is leaking from its body! Tighten the Phillips
screws on the Valve body then watch for four (4) minutes. If the leak continues
replace Valve #78 and calibrate it.
O-ring seal between the Balancing Chamber and Valve #36 and/or #38 OR Valve
#36 and / or #38 valve body is cracked.
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
DO NOT
follow the screen's
Page 561