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It is also important to understand the relationship of these two valves, the pressure
gauge, and your RO pump. The pump has a fixed amount of flow produced, and
the valves are the control devices to distribute this fixed flow amount. The pres-
sure gauge is an indicator of applied membrane element pressure a the flows set
by the valves
8. Press the Fill Button on the OIT so it is in the ON position. Water should begin
to flow through the machine at this point, but the pump will not start. Allow the
machine to fill for ten (10) minutes.
9. As your machine is filling check for leaks and repair as needed.
10. Turn the ON/OFF switch, located on the High Voltage Enclosure, to the ON posi-
tion.
11. Energize the power source to the motor starter. The pump should not operate at
this point.
12. Check the rotation of the high-pressure pump:
12a Press the RO button so it is in the ON position.
After the minimum inlet pressure [0.8 bar (11.6 psi)] is established and
maintained for six (6) seconds, the high-pressure pump will start.
12b When the high-pressure pump starts, immediately press the RO button so
it is in the OFF position.
The motor should rotate clockwise while looking at the motor end of the high-
pressure pump. If the motor is not rotating clockwise, change any two of the three
leads in the motor starter and recheck rotation.
W
ARNING: ALWAYS TURN POWER OFF TO CHANGE ANY
WIRING.
CAUTION
: Operation of the pump backward, even for a short time, can cause
damage to the pump.
13. Press the RO button so it is in the ON position. The high-pressure pump will
operate and the machine will begin to build pressure.
14. As the machine is operating, watch the primary and final pressure gauges on the
instrument panel. The machine is designed to operate at approximately 7.6 bar
(110 psi).
NOTE
: Do not allow the pressure to exceed the maximum boost pressure
(P
max
) specified for your machine model (Table 1.2). If the pressure
exceeds P
max
, open the concentrate and/or recycle control valves until
the pressure gauge shows P
max
or less.
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