Operation
25
Cat. No. 01024000
Triggering Regeneration Mode
There are four conditions that can trigger a regeneration:
1. If the flow meter keeps flowing at a minimum of 1 ct/second or greater and all of the following conditions occur:
•
The system detects poor quality water
•
The Quality Purge Timer reaches the user-specified QUALITY RINSE TIME
•
The NUMBER OF GALLONS SINCE LAST REGEN value is greater than the user-specified MINIMUM CA-
PACITY
The poor quality water value is user defined as a TDS or conductivity level. This level should be set at a level 5–15
ųs/cm higher than the lowest quality water expected to be produced by the system. Note that the Premier Auto DI
Systems usually produce their poorest quality water immediately after each regeneration (
).
See
"Programming an External Quality Monitor" on page 88
for more information about setting this value.
Then the system switches state from QUALITY PURGE to REGENERATION.
The TDS limit initiates a quality purge mode for the adjustable programmed cycle time default value of 5 minutes.
After this duration, if TOTAL GALLONS SINCE LAST REGEN is above the minimum gallon capacity and TDS is
above the TDS limit, then the system will go into regeneration.
If the TDS level drops below the TDS limit during the default quality delay of fifteen (15) seconds then the system
will return to service. This is designed to rinse away any temporary high TDS spike that may exist. (See
2. While in SERVICE mode, if the TOTAL GALLONS SINCE LAST REGEN exceeds the user specified value of
CAPACITY (and the CAPACITY value is NOT set to 0), then the system will switch to the REGENERATION
mode.
3. While in SERVICE mode, if the time is currently equal to Time-of-Regen and the REGEN INTERVAL user spec-
ified value is not zero and the number of days since the last regen is equal to or greater than the REGEN inter-
val value, then the system shall enter the REGENERATION mode.
4. When in service mode, if the user requests a manual regeneration via the controller menu, the system will move
to regeneration mode.
When the system enters the REGENERATION mode, it begins a ten-step regeneration process (see
WARNING! In the event of an automatic deionizer regeneration failure, where water quality re-
mains poor following a regeneration, the automatic deionizer will switch to an error
mode and will NOT supply any product water. It is the customer’s responsibility to
ensure that no downstream equipment or processes will be damaged by this no flow
condition.
WARNING! In the event of a power loss during regeneration and subsequent power return, the
automatic deionizer will change to recovery mode. See
. While in recovery
mode, NO product water will be supplied. It is the customer’s responsibility to ensure
that no downstream equipment or processes will be damaged by this no flow condi-
tion.
Triggering Error Mode
If the flow meter keeps flowing at a minimum of 1 ct/second or greater, and a TDS probe or external sensor detects poor
quality water, and the Quality Purge Timer Reaches the user specified QUALITY RINSE TIME and the NUMBER OF
GALLONS SINCE LAST REGEN is less than or equal to the user specified value of MINIMUM CAPACITY, then the
system switches state from QUALITY PURGE to ERROR.
If, before the QUALITY RINSE TIME is reached, the flow meter drops below 1 ct per second and/or the system senses
good quality water, then the system reverts to SERVICE mode.