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Table of Contents
Introduction
The water purifiers proposed by DIASYS are a combination of 2 elements:
- a reverse osmosis system removing 95% of impurities
- a deionising filter producing pure water(conductivity below 5µS/cm)
The reverse osmosis membrane has the advantage to prolong the lifetime of the deionising filter.
The water purifiers designed by Diasys are especially built for providing deionised water to clinical chemistry and immunology analysers.
catalog
recommended conditions
A reverse osmosis system works well with water at ambiant temperature. The tap water should not be too hot (above 35°C) or too cold ( below 10°C). Outside these bounds, the membrane might be damaged irreversibly. The optimum production of water is obtained at 25°C.
In order to activate the reverse osmosis process, the tap water pressure in the membrane must be strong enough, above 2.5 BAR ( ideal pressure is generally around 4.5 BAR) but can vary depending of the membrane. When the tap water pressure is too low or vary, a booster pump is required. It is recommended to rince the membrane every month using the following process:
- disconnect the restrictor
- leave water flowing during 20 minutes
- reconnect the restrictor
This manual process is similar to the flush function available on the system equipped with an electronic controller, which allows to rince the membrane easily just by pressing a button.
Troubleshooting
| PROBLEMS | POTENTIAL CAUSES | SUGGESTED ACTION |
| Power light OFF | No power supply | Verify the power supply wires ; switch power ON |
| Power supply fuse is broken | Check and replace the fuse | |
| - Power light ON - No production of purified water - indicator PUMP is off - indicator SOURCE is ON | The inlet tap water supply is closed or has insufficient pressure | Improve water supply |
| Water inlet tubing folded or obstructed | Check that the inlet pipe is not damaged. | |
| - Power light ON - No production of purified water - all control light indicators OFF | A fuse is broken : - pump fuse - fuse in the controller box | Check and replace the fuse |
| - Power light ON - No or low purified water production - indicator PUMP light ON - Pump running | Pre-treatment clogged | Replace the pre-treatment filters before the RO membrane |
| Weak flow of inlet water | Increase the flow of the inlet water | |
| Reverse osmosis membrane clogged | Change the membrane | |
| - Power light ON - No or low purified water production - indicator PUMP light ON - Pump always OFF | Pump fuse burned | Replace the pump fuse |
| Light indicators FULL and PUMP alternate | Defective high-pressure sensor or check valve | Change pressure sensor and check valve |
| - Power light ON - Lack of pressure and low flow output | Watertank hand valve closed | Turn ON the watertank hand valve |
| Requested pure water volume above the capacity of the water purifier | Wait the watertank is filled again |
|
| Lack of pressure in the pressurised watertank | Re-adjust the air-pressure of the water tank | |
| purified water conductivity too high | Resin saturated | Replace resin cartridge or bottle |
| - POWER light ON - FULL indicator ON - Pump OFF - Drain flowing continuously | Inlet solenoid valve defective | Replace the inlet solenoid valve |
| Conductivity meter display OFF | Batteries out of order | Replace the batteries |
Q & A
