Nw- 2.0.1 Valve Error = 0/Isolate Inlet Water Pressure; Nw- 2.0.2 Isolate Incoming Water - Fresenius Medical Care 2008K2 Troubleshooting Manual

NW- 2.0.1 VALVE ERROR = 0 / ISOLATE INLET WATER PRESSURE
a) Leaving the machine in a program, TURN THE WATER OFF!
b) A psi pressure gauge is required. ENSURE it reads 0 psi before installing it!
c) Per the Figure below, tee the gauge into Inlet Pressure Regulator #61.
TURN THE WATER ON!
d)
WARNING! Using a plastic clamp here will cause error!
e)
clamp the tubing between the gauge and the Heat Exchanger at the location shown the Figure above.
TWO (2) possible scenarios:
1) IF the gauge = 18 psi or more: Remove the pliers then proceed to
number NW- 3.0.0
2) IF the gauge = less than 18 psi: ENSURING the water was on prior to checking pressure, remove
the pliers then see procedure number

NW- 2.0.2 ISOLATE INCOMING WATER

a) TURN THE WATER OFF!
b) This procedure requires a 1000 ml (or larger) graduated cylinder.
c) Reproduce the conditions when the "No Water" occurred. For
example, multiple machines running attached to the same
PORTABLE RO, filling the bicarbonate tank, etc.
d) Figure right, at the rear of the machine, remove the (TOP)
Incoming Water tubing!
Part e next page
NW- 2.0.2
Figure 30 – Hydraulics Top View
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Using METAL PLIERS, tightly
page 151,
(page 149).
procedure
Page 149