Fresenius Medical Care 2008K Troubleshooting Manual page 246

OVER- 3.0.1 CHECK INLET PRESSURE REGULATOR (Slow Overflow)
This procedure checks that Inlet Pressure Regulator #61 'maintains' pressure over time:
a) IMPORTANT! Turn the machine OFF.
b) Allow 20 minutes (or longer), is gauge pressure greater than 22 psi?
Yes Regulator #61 is bad or incoming water pressure is too high (greater than 105 psi).
No See procedure number
OVER- 4.0.0 CHECK FOR LEAKING INLET WATER SYSTEM (Slow Overflow)
a) Referring to Figure 101
machines) is the 'air gap chamber'.
b) With the machine OFF, remove the tubing that enters the 'air gap chamber' vertically from the top. This
tubing is from inlet water valve #41. CAUTION! Avoid the vent tubing!
IMPORTANT!
c) ASSURE the water is on!
d) Watch for two minutes. Does water continually drip from the tubing?
Yes Leaving the tubing disconnected, see procedure number
No Valve #41 is okay, see procedure number
OVER- 4.0.1 CHECK VALVE #41 (Slow Overflow)
Referring to the Figure (right), unplug valve #41 from distribution
board position labeled "V27, IN-V". Watch for one minute. Does the
dripping continue?
Yes Replace valve #41 (leaking).
No Leaving the tubing disconnected, see procedure number
OVER- 4.0.2
OVER- 4.0.0
(page 244), on top of the hydro chamber (newer machines) or hydro block (older
Figure 101 – Valve #41 Check
(page 245).
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 20 - Troubleshooting Overflow From The Vent Tube
(page 244).
OVER- 4.0.1
OVER- 5.0.0 (page 245).
(page 244).
Page 244