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SYMPTOM
Low operating pressure
(continued)
Low permeate flow rate
TROUBLESHOOTING
POSSIBLE CAUSES
Insufficient electrical power
Pump not operating correctly
Low operating pressure
Dirty or fouled membrane
elements
Operating on cold water less
than 13°C (55°F)
Membrane elements installed
backward or damaged concen-
trate seal
Flow meter inaccurate
26
REMEDIES
Check the fuses or circuit
breakers; measure the voltage.
See Tonkaflo pump instruc-
tions.
See possible causes for low
pressure.
Flush and clean the
membrane elements.
Install a hot/cold feed water
tempering valve if more per-
meate flow is needed.
Operate with a feed water
temperature of 22° - 25°C
(72° -77°F).
Install membrane elements in
the direction of fluid flow.
Flush and clean the machine
immediately. Membrane ele-
ments with damaged seals
should be cleaned and may be
returned for repair.
Check the flow rate manually
with a stopwatch and calibrat-
ed container.
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