Idle Mode; Di Run Mode - Thermo Scientific 1403 Series Operating Manual

Idle Mode

When the unit is first powered on, it will be placed in IDLE mode. IDLE mode indicates the unit is
powered and waiting to be placed into STANDBY by pressing the STBY button, or placed in RUN by
pressing the START/STOP button.
Figure 4-2 Idle Mode Screen

DI Run Mode

In RUN mode, the pump recirculates water through the cartridges and the UV lamp. It is
recommended that the Thermo Scientific TII be left in RUN mode during the day. In RUN mode, the
purity meter display indicates the resistivity (temperature compensated to 25°C) of the water available
for dispensing.
1. From IDLE or STANDBY, press the START/STOP button to put the unit in RUN mode. The
Thermo Scientific TII's pump will begin to run and display the purity of the product water if the
water level is above 25%.
2. Allow the water's purity to rise to the desired level before dispensing water. Also, in the RUN
mode, the RO operation automatically turns on to fill the reservoir as needed. When the reservoir
is full, the RO system will automatically return to STANDBY.
Figure 4-3 DI Run Mode Screens -
Thermo Scientific
Note Do not put unit into IDLE mode or turn off the Thermo Scientific TII during
non-work hours. Doing so will allow bacterial growth and other contamination of the
water in the system. As a result, the system will require a lengthy rinse-up period at the
beginning of the workday to achieve high-quality product water.
a) DI system in Run and RO system in Standby,
b) RO and DI systems both in Run.
Using your TII
Idle Mode
TII Water System 4-3