Filter
Top Products
39
WARNING: THE REVERSE OSMOSIS (R.O.) PUMP WILL NOT RUN IF THERE IS
MORE THAN 190 PSI (13.10 BARS) IN THE LINES BEYOND IT. THIS
MEANS THAT BETWEEN THE PUMP and THE OBSTRUCTION THERE IS
AT LEAST 190 PSI ( 13.10 BARS) IN THE TUBINGS. TAKE ALL
PRECAUTIONS and WEAR EYE PROTECTION WHEN WORKING ON
THE PROBLEM.
NOTE: IF SAFETY SWITCH AT THE VERY TOP OF THE WATER TANK IS ACTIVATED,
IT INDICATES THE NORMAL “TANK FULL” SWITCH IS NOT FUNCTIONING
PROPERLY. REPLACE “TANK FULL” SWITCH (SECOND FROM THE TOP OF
THE WATER TANK).
PROBLEM
2. R.O. pump turns on, but without completely filling the tank, shuts itself off and 30-seconds or more later
turns itself on again, and repeats the cycle. (Check this if machine is constantly running out of water even
though not much is dispensed.)
3. Drain pump will not stop.
4. Drain pump will not run.
5. Drain pump runs but will not pump water.
CAUSE
a. Inadequate water inlet pressure or clogged strainer if the gauge before sediment filter is 25 PSI
(1.72 bars) or less with the R.O. pump running.
b. Clogged filters, if gauge after sediment filter drops to 20 PSI (1.37 bars) or less after starting at a higher
value. Pressure differential between the two (2) gauges at the sediment filter is 10 PSI (0.68 bars) or
more.
c. Failed / jammed float switch at the bottom of the reservoir tank.
d. Drain pump needs about 1" of water before it is activated. If there is enough, check power to pump.
e. Failed / disconnected reservoir tank bottom float switch.
f. Failed pump.
CORRECTION
a. Clean strainer.
b. Unless pressure drop is transient, a bigger pipe may be needed to bring water to the machine. A booster
pump capable of 4 gallons (15.14 liters) per minute (gpm) at 35 PSI (2.41 bars) supplying water to the
machine is also acceptable.