Operation Manual
KRO3000
Rev 2
8
5.4
The influent water temperature must be between 5 and 45°C.
5.5
Permeate and reject lines must be no smaller than the unit outlet size. In the event of
long pipe runs, increasing the pipe size diameter may be necessary.
Ask for our suppliers engineer to consult on any item above that may be of concern.
Caution: Please check the power supply is the correct voltage and current rating. Refer to
the circuit diagram of RO main unit.
6.0 Description of Operation
6.1 Starting Up the Unit
6.1.1
Open the reject valve and recycle valves fully
6.1.2
Open feed water valve
6.1.3
Turn on the power supply.
6.1.4
Depress the RO Pump button
6.1.5
If the HIGH contacts are closed, after a short time delay the inlet valve will open
and allow water to enter the system. This first stage will expel air to prevent
damage to the membrane(s) [telescoping].
6.1.6
The flush valve will be open (the high reject flow rate will not be visible in the
reject rotameter).
6.1.7
After a few minutes the flush valve will close. The reject flow rate should be at the
maximum rate in the rotameter.
6.1.8
Slowly close in the reject valve and the recycle valve to attain the correct
operating pressures and reject flow rates*.
The correct operating conditions depend on:
Feed
Temperature
Feed water analysis
Calculated
recovery
Pre-treatment
conditions
Caution: Do not start or operate the unit with either the recycle or reject valve closed.
Severe damage to the membrane and other component may result.
Caution: Do not operate the system at excessive pressures. If over a period:
The permeate conductivity increases by 15% or
The permeate production decrease by 10% or
The HP pump discharge pressure increases by 15%
The influent water quality has changed or membranes require periodic cleaning. Do not increase
the membrane pressure beyond 115% or permanent damage to the membranes may result.
When using the unit for the first time, discard the first hour of production to drain. This will rinse
out any preservative chemical used in membrane storage.
Содержание KRO - 3000
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