ES 2050/51
Setting and changing of initial values
27
Pre regeneration signalling
10. Pre regeneration signalling
It is sometimes necessary to give a warning or to signal to another unit before
the duty water softener is exhausted.
A limit value of anything between 1% and 99% of the operating capacity may
be selected. For example, with a capacity of 180m
3
between regeneration’s and
a selected limit of 80% the contact will be made at 144m
3
.
This facility may be used to initiate regeneration of a simplex plant, and is used
in conjunction with a prohibited regeneration period. (Section 3 above.)
Regeneration will start at a fixed time, the end of the regeneration prohibited
time, but only after a predetermined volume of water has been treated.
This allows a quantity of treated water to be held in reserve for use the following
day. For example with a capacity of 180 m
3
and pre contact at 80% there would
be a treated water reserve capacity of 36 m
3
. When less than 36 m
3
of treated
water capacity remains a regeneration will take place when the next permitted
regeneration time is reached.
IMPORTANT
Untreated water must not be allowed to reach the user, it is
important that there be sufficient reserve capacity to provide water during the
time between the pre contact and the delayed regeneration cycle.
If regeneration start has not been chosen, the message "PRECONTACT"
appears in the LCD display. It is possible to operate the alarm or warning relays.
It is therefore possible to initiate external preparations e.g. prepare the
chemicals. Alternatively a water hardness monitor could be activated for the rest
of the duty period.
Step nr: 10.1
Pre contact Y/N
Step nr: 10.2
Capacity [%] 80
Step nr: 10.3
Reg.start Y/N
Step nr: 10.4
Alarm Y/N
Step nr: 10.5
Warning Y/N