Table of Contents
Advertisement
Problem
Potential Causes
•
•
RO production cycle
not starting as tank
drops
•
Recirculation fl ow
•
switch not closing
•
Re-pressurization
pump fl ow switch
•
•
Tank level sensor is disconnected or
has failed
The PLC calibration screen which
allows the system to function is set
for an incorrect storage tank height
storage tanks.
The 0-5 psi sensor allow use of tanks
up to 11.5 foot tall if needed for a non-
standard installation.
This switch will not close if the RO
pump pressure is less than 70 psi.
Repress pump does not turn on
Valve D is not opening
Too much resistant after Valve D
Solution
•
Verify the connector pin (longer pin connect to GND),
drain tank and replace sensor if necessary
•
Re-span tank to recalibrate level sensor
Increase production fl ow rate in the HMI setting
•
screen.
•
Verify switch operation by removing switch and
manually activating the switch to ensure the switch
closes as fl ow increases
•
Enter MANUAL mode and bump start transfer pump
•
Ensure the plumbing line is not shut off by a ball valve
or other impedance further downstream
Troubleshooting
|
33
Advertisement
Table of Contents
