Heatex- 2.0.0 Isolate Inlet Pressure Regulator #61 - Fresenius Medical Care 2008K2 Troubleshooting Manual

I) Watching for thirty (30) seconds to ENSURE a "No Water" or Flow Error NEVER occurs, is gauge
pressure cycling to a consistent peak of between 18 and 20 psi?
Yes Peak between 18 and 20 psi! See procedure number
No NOT between 18 and 20 psi! Referring to the Figure (previous page), loosen Regulator's
#61's lock nut and turn the center screw until a consistent peak of between 18 and 20 psi is
achieved. TWO (2) possible scenarios:
1) IF (and ONLY if) pressure adjusts to between 18 and 20 psi: See procedure number
HEATEX- 2.0.0
2) IF pressure will NOT adjust to between 18 and 20 psi: TWO (2) possibilities:
1) Incoming water pressure is more than 105 psi OR; 2) Regulator #61 is bad. Regulator
#61 can be rebuilt (Rebuild kit, P/N 190934). NOTE: Previous high pressure may have
been already damaged the Heat Exchanger causing it to leak!

HEATEX- 2.0.0 ISOLATE INLET PRESSURE REGULATOR #61

This procedure checks that Inlet Pressure Regulator #61 maintains pressure over time:
IMPORTANT!
a) Leaving the water
b) Watch the gauge for two (2) minutes. Pressure should not increase to more than 20 psi! If it does
Regulator #61 is bad but can be rebuilt (Rebuild kit, P/N 190934). If it does NOT increase to more than
20 psi NOTE this pressure then see part c.
NOTE: Previous high pressure may have been already damaged the Heat Exchanger causing it to leak!
c) Allow twenty (20) minutes. Does pressure increase more than 2 psi above what was noted in part b?
Yes Pressure increases! TWO (2) possibilities: 1) Incoming water pressure is more than 105 psi OR;
2) Bad Regulator #61. Regulator #61 can be rebuilt (Rebuild kit, P/N 190934). NOTE: The Heat
Exchanger may have already been damaged causing it to leak!
No Pressure does NOT increase! Per the Figure below, repair or replace the Heat Exchanger.
(page 666).
ON
, turn the machine
Figure 136 – Heat Exchanger (Exploded)
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
HEATEX- 2.0.0
OFF
.
(page 666).
Page 666