AmeriWater MRO2X, Operation & Maintenance Manual

Page: 46 / 55

MRO2X
– 5X Manual
- 42 -
98-0058
Rev. R
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Low product flow rate Low pressure feeding
membrane
Low pump PSI
Reject GPM flow rate too
high
Excessive PRODUCT line
backpressure
Low temperature incoming
tap water
Prefilter clogged
Membrane needs replaced Verify that the incoming tap
water supply is fully open.
The pressure on the prefilter
gauges should be > 20 PSI
when the MRO is operating.
Pump should be operating at
175
– 250 PSI.
Adjust Reject Water flow rate.
Check for restrictions in the
PRODUCT WATER FOR
DIALYSIS hose. Check the
feed pressure gauge on the
dialysis machine. If the
dialysis machine does not
have a pressure gauge,
install one inline.
Consult the Temperature
Correction Chart to determine
if the flow rate is normal in
relation to the feed water
temperature.
Check the prefilter gauges for
pressure drop. Replace the
prefilter cartridge if the
pressure drop is > 10 PSI.
Replace the membrane.
High Bacteria Count Too long since the last
disinfection or the procedure
was not performed correctly Disinfect the MRO following
the procedures in Section 5.