Amiad Water Systems | 2019
TEQUATIC™ PLUS F-150 Filter, C-series Skid
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Operation
4.4 System Setup
The following sections describe each of the areas of system setup. Even though many of the
parameters are independent, they are presented in sequence based on interdependencies of a
complete system setup.
The target of the system setup is to establish a stable differential pressure while reaching the desired
flow rate from the system. A stable differential pressure is a reading that does not increase over time.
Fluctuations of 0.2 psi is common during operation but a steadily climbing value must be avoided.
Setup should be done during periods of especially bad feed water. Conservative settings will ensure
the system can be left to run independently as slugs of particles flow into the system.
4.4.1 Feedwater Pressure
The feedwater pressure is externally set and controlled by the customer-supplied feed pump and
VFD (w/PID) with pressure sensor. The feedwater pressure is primarily facility dependant, and has
limited impact on the filtration system operation. However, changing the feedwater pressure during
operation will impact the performance of the unit. Therefore, the feedwater pressure should be set
before adjusting the rest of the system. A typical pressure may be in the range of 20 - 40 psi, but can
vary up to 80 psi, based on the external needs of the facility. Feed pressure cannot drop below 20 psi
or cavitation will occur inside housing causing damage. The pressure must remain constant (± 3psi)
as the flow requirements change from 0 GPM to 400 GPM over 20 seconds. Large fluctuations in feed
pressure will result in water hammers that will damage the filter over time
4.4.2 Baseline Brush Speed
The speed of the recirculation pump is set based on
the Cleaning Assembly RPM with no filtrate flow.
Therefore, the brush speed will be slightly lower
than the normal operating speed when filtrate
is flowing. The target brush speed is primarily
determined by quality of the feedwater; where
higher solids concentrations should have higher
brush speeds. Typical Cleaning Assembly speeds may
be in the range of 80 - 100 rpm.
1. Touch the icon for the Recirculation Pump to manually start the pump.
2. Observe the brush speed shown on the Home screen.
•
While making the adjustment, keep in mind that the magnitude of the filtrate flow will
increase the operating brush speed, accordingly.
•
Higher removal rates of solids may be achieved through higher brush speeds.
•
Too high of a brush speed can result in excessive wear and energy consumption. Too low of a
brush speed can result in more frequent DP events and fouling of the filter.
•
The cleaning assembly speed should be set to
maintain stable DP in the very short run interval
of 0-5 minutes. If DP value begins to climb
uncontrollably during this time frame the RPM
must be increased or the brush configuration must
be made more aggressive by adding brushes.
3. To adjust the speed of the recirculation pump, enter
the RPM screen and set the VFD speed %.
Brush
Speed
Pump
Speed %
