Emperor PWCRO, Manual, Page: 28 / 60

Pre-treatment Lockout Wiring
In some applications, there are backwashing filter units or softeners used as pre-treat-
ment for the RO module. Some of these pre-treatment units may be equipped with a
"lockout" output. In this case, these outputs can be wired into the tank Pre-treatment
Lockout Inputs. This will shut the RO module down while the backwashing filter or soften-
er is in regeneration / backwash. This option is utilized to ensure there is no untreated
water fed to the RO system when a pre-treatment device is in regeneration / backwash.
The pre-treatment output switches will be wired as follows.
The wires above show color coatings. However, the colors do not matter. There is no volt-
age to these wires. They just need to be wired in a loop that can open or close when nec-
essary.
BE SURE to use the Normally Closed (circuit opens when regeneration / back-
wash starts and closes at the end of all cycles) wires only on the Backwashing Filter or
Softener output switch.
IMPORTANT! Do not apply voltage to the Pre-treatment Lockout connection circuit.
This will damage the RO system. BE SURE the pre-treatment output switch on the
backwashing filter or softener DOES NOT supply power.
28