MODES OF OPERATION COMMENTS If RoDi unit is in Run mode, you will see The more pure the water, the higher its a number (such as “17.6”) on the digital resistivity will be. display. This is the resistivity of the water in megaohms•cm and indicates the purity of the water. While in Run mode, water is being purified continuously. Unit should be in Run mode to dispense water. In Standby mode, the pump will operate for 10 minutes out of every hour, and the If RoDi unit is in Standby mode, you will UV light will operate for 10 minutes out of see on the LED readout. The unit “Sby” every four hours. should be left in Standby mode when not in use to conserve the UV bulb, RO membrane and cartridges. If RoDi unit is in Idle mode, you will see on the LED readout. Idle mode “IdL” halts purification until Start/Stop is pressed and unit enters Run mode. Idle mode should be avoided to ensure a supply of high purity water at all times. Glass is the best storage material for water PROCEDURE: OPERATION containers, especially for long-term storage, because it does not leach Locate the container into which you materials like plastic does. intend to dispense purified water. Unit should be left on at all times. If unit is turned off, locate the power switch on the Identify the operational mode of the back of the unit and turn on. Notify the lab unit by using the guidelines in the assistant if unit is turned off. above section. If it is not in Run mode, press Start/Stop. A number indicating the resistivity of the water should appear. If necessary, allow the resistivity to rise until water has reached the desired purity. A resistivity of at least 16 megaohms•cm is adequate for most applications. Position the container under the valve without touching the valve to avoid contamination of the unit. Press down on the draw-off valve lever to dispense water. Lever will click down and stay in position. When finished, move the lever up to the off position.
MODES OF OPERATION If RoDi unit is in Run mode, you will see a number (such as “17.6”) on the digital display. This is the resistivity of the water in megaohms•cm and indicates the purity of the water. While in Run mode, water is being purified continuously. Unit should be in Run mode to dispense water. If RoDi unit is in Standby mode, you will see “Sby” on the LED readout. The unit should be left in Standby mode when not in use to conserve the UV bulb, RO membrane and cartridges. If RoDi unit is in Idle mode, you will see “IdL” on the LED readout. Idle mode halts purification until Start/Stop is pressed and unit enters Run mode. Idle mode should be avoided to ensure a supply of high purity water at all times. PROCEDURE: OPERATION Locate the container into which you intend to dispense purified water. Identify the operational mode of the unit by using the guidelines in the above section. If it is not in Run mode, press Start/Stop. A number indicating the resistivity of the water should appear. If necessary, allow the resistivity to rise until water has reached the desired purity. A resistivity of at least 16 megaohms•cm is adequate for most applications. Position the container under the valve without touching the valve to avoid contamination of the unit. Press down on the draw-off valve lever to dispense water. Lever will click down and stay in position. When finished, move the lever up to the off position. COMMENTS The more pure the water, the higher its resistivity will be. In Standby mode, the pump will operate for 10 minutes out of every hour, and the UV light will operate for 10 minutes out of every four hours. Glass is the best storage material for water containers, especially for long-term storage, because it does not leach materials like plastic does. Unit should be left on at all times. If unit is turned off, locate the power switch on the back of the unit and turn on. Notify the lab assistant if unit is turned off.
2012_fall_sop_book_9th_ed_1.docx