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1 General
The instrument is a combined control instrument of a reverse osmosis controller and an on-line
conductivity instrument. It can perform the operation test, status control and on-line monitoring of water
quality conductivity (combining PLC controller and conductivity meter). It takes multiple anti-interference
measures, adopts unique process flow and graphical control panel with LED indicator lamp embedded, the
interface is friendly; menu-driven operation is used, multiple groups of parameters can be set and modified,
the requirements of automatic operation are met.
2 Process Flow Selections
There are two typical operation modes for RO system (as shown in Fig.1A and B). This instrument
can operate in both modes in A and B.
Level of raw
water
Waste outlet
Raw
Low
water
press
tank
pump
Low feed
protection
Waste outlet
Low
press
Tap water
pump
3 Functions and Main Technical Specifications
Low feed protection:
In case of raw water supply break-off, the "LOW FEED PRESS" lamp will be lightened, the
nixie tube will display "ALA" and the buzzer will give an alarm, the controller will shut down the
whole RO system. After that, the controller will keep detecting the low feed switch. When the water
supply is resumed, the system will be restarted.
Low pressure protection:
In case of low pressure, the "LOW PRESS" lamp will be lightened, the nixie tube will display
"ALA" and the buzzer will give an alarm, the controller will shut down the whole RO system and try
to start up for the first time after 1 minute. If the water pressure is normal, the water producing
process will be resumed. If the start-up fails for three times, the system will come into a dead-lock
status. Press the ECS key(external control switch) or the reset key to exit and then restart.
High pressure protection:
In case of high pressure over limit, the "HIGH PRESS" lamp will be lightened, the nixie tube
will display "ALA" and the buzzer will give an alarm, the controller will shut down the whole RO
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ROC-2313 Reverse Osmosis Controller
Direct drain valve
Fig. 1-A First level RO process flow with raw water tank
Direct drain valve
Fig. 1-B First level RO process flow with direct water supply
Low press protection
Inlet valve
Safety
High
press
filtering
pump
Inlet valve
Low press protection
Safety
High
press
filtering
pump
1
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Flush vale
High press protection
RO
membrane
Flush valve
Flush valve
High press protection
RO
membrane
Pure
water
tank
Pure
water
tank
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Summary of Contents for Create ROC-2313
- Page 1 ROC-2313 Reverse Osmosis Controller 1 General The instrument is a combined control instrument of a reverse osmosis controller and an on-line conductivity instrument. It can perform the operation test, status control and on-line monitoring of water quality conductivity (combining PLC controller and conductivity meter). It takes multiple anti-interference measures, adopts unique process flow and graphical control panel with LED indicator lamp embedded, the interface is friendly;...
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Page 2: Front Panel Illustration
system and wait for the elimination of high pressure. When the high pressure eliminates, the controller will try to start up for the first time after 1 minute. If the water pressure is normal, the water producing process will be resumed. If the start-up fails for three times, the system will come into a dead-lock status. - Page 3 The display board is shown in the above figure, there are three areas from up to down: I, II and III. Part I contains 4 LED status indicator lamps and conductivity value display area. The 4 LED status indicator lamps respectively indicate: POWER----indicator lamp for power supply HIGH----indication for conductivity over limit alarm μS/cm----conductivity value, representing that the displayed value is the conductivity value of the...
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Page 4: Rear Panel Illustration
5 Rear Panel Illustration High water level of High pressure pure water tank pump Over pressure of high Conductivity pressure pump over limit Low pressure of high Low pressure pressure water supply pump Low feed of raw water Inlet valve Green Yellow White... - Page 5 system adopts direct water supply from tap water as shown in Fig. 1-B, then this terminal is connected to the normally open contact of the pressure switch of low feed protection, and it will close when water pressure is normal. 5---terminal of external operation switch of controller ,ECS (the system operates when it is switched on ).
- Page 6 PDF 文件使用 "FinePrint pdfFactory Pro" 试用版本创建 www.fineprint.com.cn...
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Page 7: Operation Method
7 Operation Method When the instrument is powered on, the “POWER” lamp will be lightened, and the nixie tube will display the conductivity value. Switch on ECS to start water producing, stand by in the nixie tube if it is not switched on. - Page 8 8 Connection for automatic reverse flushing： Pre-processing normally open contact Controller External control switch Power Relay J1 should be added for reverse flushing. Two contacting points J1-1,J1-2 is normally open and close .J1 is controlled by pretreatment timer and time of reverse flushing is subject to close time of normally open contacting point.
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Page 9: Troubleshooting
11 Trouble shooting ，high voltage 1） ---wrong selection of The magnetic valve can not be opened magnetic valve magnetic valve should be used. 2） Low pressure alarm when flush valve is opened---too much opening extend for flush valve ,leakage of pressure caused by wrong selection or too large hole. Selecting suitable magnetic valve or adjusting valve is used before the magnetic valve.
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