MANOWNROSM
SYSTEM INSTALLATION
US Filter
7
2. 0
SYSTEM INSTALLATION
2.1
PRECAUTIONS BEFORE INSTALLATION
The following are feedwater source requirements:
A.
Inlet pressure of 0.69 to 6.9 bar (10 to 100 psig) at design feed flow.
B.
Temperature of between 2
°
C (35
°
F) and 40
°
C (104
°
F). Recommended
operating temperature is 25
°
C (77
°
F).
C.
Free chlorine concentration must be non-detectable on a continuous basis (<0.1
mg/l).
If the free chlorine level is greater than 0.1 mg/l, a carbon filter or bisulfite system
should be used as pretreatment to remove chlorine from the feedwater entering
the RO unit. Chlorine will cause irreversible damage to the membranes.
D.
Langelier Saturation Index (LSI) of the reject must be negative at the system's
operating recovery to avoid fouling the membranes.
CAUTION
pH must be between 4 and 11. Chlorine must be less than 0.1 mg/l.
NOTE:
If feedwater does not meet the above requirements or there is some doubt,
contact your US Filter representative for recommendations.
2.2
UNPACKING
The RO systems are shipped completely assembled. Pressure switches, gauges,
control box, pump, valves and regulators are all pre-mounted on the main frame and
factory set to correct values. Carefully remove from the packing crate to avoid damage
to gauges, RO membranes, etc. Do not drop or handle with excessive roughness to
prevent damage to the electronic components and to prevent damage to the piping
joints.
2.3
SYSTEM LOCATION
A drain capable of handling the flow of reject water during system flushing should be
located as close to the system as possible. The reject line should be secured so that
during the high velocity flush the line is not dislodged from the drain.
2.4
POWER REQUIREMENTS
The power requirements for the system are given on the system I.D. plate just above
the controller enclosure. The system should be connected with a multiconductor,
grounded cable to a disconnect switch box. The switch box should be located within
approximately 10 feet of the system for the convenience of technicians servicing the
unit.
The system is provided with a motor starter to permit coordinated over-current
protection as defined by the National Electrical Code.
Ground the power cable to the ground connection in the motor starter housing box.
Branch circuit conductors supplying the motor shall have an amperage capacity of not
