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Amiad Water Systems | 2019
TEQUATIC™ PLUS F-150 Filter, C-series Skid
39
Maintenance
Problem
Possible Cause
Solution
Low RPM
Build up on Cleaning Assembly
Bearing
•
Increase purge frequency and duration
•
Incorporate CIP for enhanced cleaning.
Sensor Fault
•
Ensure sensor is plugged in
•
Sensor should be touching filter housing.
•
Check using free magnet and swipe past sensor
•
Adjust sensor placement on mounting bracket,
move up or down until a signal is read.
•
Ensure the cleaning assembly still has a magnet
installed.
Recirculation pump not
running
•
With unit fully powered down, check that the pump
will spin freely.
•
Inspect wiring at the VFD and the pump for an open
or bridged circuit.
Recirculation
pump is running
immediately upon
unit power up
or not stopping
during shutdown.
System not shutdown properly
•
Check if system has had a recent power loss.
•
Use E-Stop to stop the running pumps; log into the
HMI using appropriate credentials; select the “Stop”
button and confirm the pop-up to stop the unit;
release the E-Stop button and ensure the pumps do
not run. If they continue to run repeat the process.
•
Cycle the system power and ensure fully de-powered
for 10 minutes before power up.
Network communication not
correct
•
Set network connection to “none” and re-attempt
shutdown.
•
Ensure SCADA is sending momentary signals to unit.
System stuck in a
particular sequence
and not able to
move on.
Valve feedback has not been
received
•
Check the feedback wires to ensure the connections
are still made
•
Confirm the valve has reached the end of its travel,
if is is binding it must be freed to complete travel.
•
Manually cycle the valve full travel using the HMI,
this will reset the position in the control system.
A required set point has not
been reached
•
Ensure enough time has been given that any timers
have been completed
•
Ensure the RPM or DP setpoints are not set beyond
what the system is capable of, reduce these values if
necessary.
Valve indication
reverse valve actual
position.
Feedback is reversed and/
or does not match PLC valve
location.
•
Ensure valve plugs and connections are correct.
•
Check wiring inside valve housing
•
Manually cycle valve from HMI, valve must make
full travel cycle.
•
Cycle power and ensure fully de-powered for 10
minutes before power up.
Excessive noise
from filter
Air in system
•
Vent air from system.
•
Low feed pressure can cause cavitation. Make sure
the feed pressure is above 20 psi.
Cleaning assembly making
contact with housing or filter
•
Verify that cleaning assembly is installed correctly.
•
Inspect the cleaning assembly for broken paddles.