Setting The Ro % Reject Alarm; Setting The Feedwater Chlorine Level; Setting System Options - Thermo Scientific 1403 Series Operating Manual

Setting the RO % Reject Alarm

The RO % Reject Alarm monitors RO membrane performance and can be set between 65% and 90%
reject. Factory default is 75%. To adjust the alarm:
1. Press MENU. Scroll to RO Options and choose Low Reject Alarm.
2. Use the up and down arrows to set the low alarm. Press OK to accept settings.
The alarm will alert the user when the RO % reject falls below the % reject alarm level by illuminating
the SYSTEM ALARM LED. See details by pressing MENU and choosing System Alarm. See the
"Error Conditions" section later in this manual to interpret the error.

Setting the Feedwater Chlorine Level

To ensure that the RO membrane(s) in the Thermo Scientific TII are not damaged by free chlorine in
the feed water, the system electronically tracks the amount of chlorine processed by the carbon prefilter
(D502115) and alerts the user when the carbon capacity is exhausted. There are three selectable levels
of free chlorine content; the factory default is the highest level (>1.41). If you know the free chlorine
level of your feed water supply, you can set this level through the Thermo Scientific TII menu:
1. Press MENU. Scroll to RO Options and choose Chlorine Level.
2. Use the up and down arrows to set the appropriate chlorine level in ppm. Press OK to accept
settings.
If you do not know the free chlorine level of your feed water, the setting should be left at the factory
default highest level (>1.41) to avoid damage to the RO membrane(s).

Setting System Options

See procedures in the table below to choose system options. Setting up the Auto Standby is highly
recommended.
Options
Auto Standby
Unit Under Counter
Display Contrast
Set Units
Thermo Scientific
Procedure
MENU → SYSTEM OPTIONS → AUTO STANDBY →
AUTO STANDBY STATE → Choose ON or OFF → OK →
Scroll to and enter RUN mode → OK → Scroll to and enter STANDBY
mode → OK
MENU → SYSTEM OPTIONS → UNIT UNDER COUNTER →
Choose ON or OFF → OK
MENU → SYSTEM OPTIONS → DISPLAY CONTRAST → Adjust
up and down to desired contrast → OK
MENU → SYSTEM OPTIONS → DI UNITS, RO UNITS or PRES-
SURE UNITS → Choose desired units → OK
Using your TII
Setting the Feedwater Chlorine Level
TII Water System 4-7