MiniWarden/PoolWarden + (PLUS) Operation Manual • www.poolwardentraining.com • 17
1. Calculate the total amount of chemical the pool would ever need in a 24 hour period.
2. Calculate the amount of time it would take the feed-pump to inject that total amount of chemical in
a 24 hours. Example: Limit to 1 gallon with a 10 Gallon Per Day (GPD) Fixed Rate Peristaltic
Pump. 1 Gallons / 10 Gallons * 24 Hours = 2.4 hours or 02:24:00. You will need to adjust for
variable pumps depending on the variable pump setting. Most variable pumps use a scale of 10 to
0. So if the pump is set on 8 then use 80% of the total GDP rate, in this case .80 x 10 GPD = 8
GPD.
3. Calculate the overfeed time with the following equation using the following example…..
Overfeed Time = (Daily Gallon Limit) / (Pump GPD Rate) times (24 Hours)
ManualTime 00:02:00
ORP Control Span 40
PPM Control Span 1.0
ORP Setpoint 700
PH Lockout 0.0
PPM Setpoint 2.0
On DELAY 00:00:20
MaxTime On 00:01:00
MinTime On 00:00:00
MinTimeOff 00:05:00
PPM High Limit 0.0
ORP High Limit 0
Off if Flow Off FS 1
SetOvrfeed 00:00:00
Overfeed 01:00:00
with TrueDPD PPM
ORP1 and ORP2 Relay Configuration
In the Relay Setup Menu scroll to ORP1 or ORP2 and press enter. If the
TrueDPD is enabled there will be PPM commands.
t Manual Time 00:02:00: Is the amount of time you can set a relay to turn
on manually.
t ORP Control Span: Press Enter to cycle between 0, 10, 20, 30, 40 and 50
mv. If the measurement is less than the span below the setpoint then the
relay will be on for the full on time and if in between the setpoint and the
span the on time will be proportionately decreased. If the measurement is
greater than the setpoint the relay will be off. Span control helps to prevent
chemical overshoot.
t PPM Control Span: Press Enter to cycle between 0, 0.5, 1.0, 1.5 and 2.0
ppm. If the measurement is less than the span below the setpoint then the
relay will be on for the full on time and if in between the setpoint and the
span the on time will be proportionately decreased. If the measurement is
greater than the setpoint the relay will be off. Span control helps to prevent
chemical overshoot. If both PPM and ORP spans are used, the higher
calculated on time will be used.
t ORP Setpoint 700: The relay will turn on if the ORP is less than 700.
t pH Lockout 0.0: The pH Lockout default setting is zero “0” or disabled.
ORP is highly dependant on pH. A high pH reduces the effectiveness of
the sanitizer and has a direct effect on lowering the ORP even though
there may be an ample amount of sanitizer in the water. pH Lockout helps
to prevent chlorine overfeed. A typical pH Lockout setting is 8.0 and will
lockout (keep from turning on) the ORP relay when pH reaches 8.0 or
higher. This command doesn’t effect the PPM setpoint. In the setup menu
a feed time in minutes per hour can be selected to allow some feeding of
sanitizer during pH lockout, this feature is only available if the TrueDPD
isn’t enabled.
t PPM Setpoint 2.0: The relay will turn on if the measured PPM is less than
2.0. As a Safety the PPM must also not be 0.0. If the DPD reagent is out
or something is wrong with the TrueDPD it may measure 0.0.
ManualTime 00:02:00
ORP Control Span 40
ORP Setpoint 700
PH Lockout 0.0
On DELAY 00:00:20
MaxTime On 00:01:00
MinTime On 00:00:00
MinTimeOff 00:05:00
ORP High Limit 0
Off if Flow Off FS 1
SetOvrfeed 00:00:00
Overfeed 01:00:00
ORP Settings
t On Delay 00:00:20: The turn on delay requires the setpoint condition to be met for an extended period
of time before turning the relay on. The value 00:00:00 disables the on delay.
t Max Time On 00:01:00: When the relay turns on this is the maximum time before it turns off. If the
sanitizer level is not being maintained then more or less on time may be needed. The maximum time
may be less if the sanitizer span is used. Use Max Time On for liquid sanitizer.
t Min Time On 00:00:00: This is the minimum amount of time the relay will be ON if the measurement is
below the setpoint. Use this command for salt water chlorine generators and chlorinators. With this type
of on time, when the relay turns on it will be on until the setpoint is reached and for at least the on time
specified. Span isn’t used. Note: Max Time On and Min Time On can’t both be 00:00:00 and one is
required to be 00:00:00.
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