Trouble Shooting
If the following problems occur, please check as follows:
1) Pump can not work to generate purified water:
Check if the pressure of water supply is high enough to work. The RO controller box
does not start the pump under low pressure.
Check if either high pressure switch or flush valve works, (stuck)
Check if the fuse on transformer is burned , if so, then check if post in-line carbon
filter(T33) or PP cartridges is blocked, it may cause the pump to be overloaded
2) RO system does not operate.
Check if power supply is normal.
Check if the feed water ball valve has been turned on (check if water pressure is nor -
mal).
Check if the water storage tank is full of water
3) RO system can not operate automatically
Check if there is any wrong operation.
Check if the high and low pressure valve is normal.
4) Pump head leakage:
Check if post in-line carbon filter (T33) or PP cartridges are blocked this may cause the
leaking. Sometime the leakage may be caused by the increased pressure of the water
in the pump head that cannot be released outward. If so, replace all the carbon car-
tridges and send the pump for repair.
Also either a weakened diaphragm or the blocked scale could cause the leaking.
The water can not flow out due to the blocked RO membrane, which is caused by a
blocked flow restrictor. This cause the pump head to be filled with high pressure water
that can cause a leak. It could be rectified by improving the relevant components.
Pump is operating normally , but can not generate purified water:
The cause may be that the RO membrane is blocked or pump is out of pressure. If the
RO membrane is blocked, please replace the RO membrane. If the cause is that the
pump has no pressure,please check if it is due to either the pump being loaded for to
long a time or the filtering materials is often blocked and the adequate maintenance is
not done,this can caused the pump structure to be weakened. Send pump for repairing.
5) No purified water coming out while tank is full of water :
The cause may be the air inside the tank is out. Please recharge the air (7 psi) and
check if the tank has air leakage. If it does, please replace the tank.
If the post in-line carbon filter is blocked. Please replace the filter.
6) The wastewater keeps on discharging when the tap of RO system is closed.
Check if flush valve is operating normally; otherwise, replace it.
The input water valve was damaged.
7) RO system could not be completely stopped or restart operating quickly while the tank is full.
High-pressure switch is out of work. Please repair or replace it.
Check if valve is releasing pressure and is not stuck. Please replace it.
8) The volume of purified water is too little:
Check if the filters are not to dirty and exceeded the filter's service life.If it is caused by
the RO membrane that is to dirty or not be flushed regularly. Please replace it.
Check if temperature of water is to cold.
The water delivering pressure is not as good as that of the new system. Please replace the pump
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