14
three-phase starter. Re-energize the pump voltage and re-check, to ensure correct
rotation for the start-up and operation of your machine.
WARNING: IF THE RO PUMP IS STARTED WITH INCORRECT ROTATION (i.e.,
BACKWARDS), A NOTICEABLE DROP IN FLOWS AND PRESSURES WILL RESULT. IF
PUMP MOTOR OPERATES BACKWARDS FOR ANY LENGTH OF TIME, PUMP DAMAGE
MAY RESULT.
After correct rotation has been verified, you are now ready to start the machine and
set the flows and pressures.
With the recycle and concentrate orifices still two (2) turns open and adequate feed
water available, start the machine by turning the ON/OFF button to the ON position.
As the pump starts to build pressure, begin to adjust the orifices in the following
manner: start by slowly closing the concentrate orifice while slowly opening the
recycle valve.
Primary Pressure for Normal Operation at 77°F (25°C):
E4-Series: 220 psi (15.2 bar) at 77°F (25°C)
EZ4/E4LE-Series: 115 psi (7.9 bar) at 77°F (25°C)
While you are doing these valve adjustments, to obtain correct flows and pressures,
observe the primary or pump pressure. The pump pressure, while adjusting the
orifices, should never operate outside of these ranges:
E4-Series Range: 190 - 275 psi (13.1 - 19.0 bar)
EZ4/E4LE-Series Range: 100 - 140 psi (6.9 - 9.6 bar)
The concentrate valve is drilled, and when completely closed the machine is running
at the correct concentrate flow for a 75% recovery (Table 1, Flow Specifications for
E4-Series Machines).
If the temperature of the inlet feed water is not 77°F (25°C) use the Temperature
Correction Factor Table (Technote 113). The proper adjustment of the recycle and
concentrate valves are critical to the correct operation of the machine.
CAUTION:
Optimum recovery will vary according to water quality.
3.4.
Temperature Correction Factor
If the temperature of the inlet feed water is not 77°F (25°C), refer to Technote 113 for
Temperature Correction Factors.
