EcoWater CHC Series, Service And Troubleshooting Manual, Page: 54 / 130

54
i. Phoenix Home Position Switch- The home position switch sends a 12 VDC signal
back to the controller as the foot valve reaches its home position. If your filter is not
recognizing Home Position, first verify the connections of the cables, then measure
the voltage at the controller with your DVM to see if the signal is returning from the
switch. We have also seen one failure where the restraining clip on the center shaft
of the foot valve was missing and the foot valve shaft would allow the switch’s
signal bolt to move too low for the switch to see it. Make sure that the signal bolt is
within 1/8” of the home position switch as the foot valve rotates 360 degrees.
j. Phoenix Foot Valve- If water is found inside of the Foot Valve area where the home
position switch is located, an o-ring kit will need to be installed on the Foot Valve.
This kit includes smaller o-rings that will be placed inside of the valve against the
shaft itself. Without replacing these smaller o-rings water will most likely continue
entering the home position switch area. Always make sure the Foot Valve rotates
freely throughout its 360 degrees of rotation. If it does not, make sure no debris is
longed in one of the internal ports that the valve rotates against. We have seen large
debris in this are that can keep the valve from turning.
k. Phoenix Control PLCs- If you have a TECO controller it has been modified from
the original ZGF controller. The Teco controller will indicate that a BACK WASH
FAILURE has occurred, you will need to verify the appropriate steps if this message
appears. You could also find a SCREEN CLEANING REQUIRED message. This
message indicates that greater than 5000 back washes have occurred. To reset this
message, Press the ESC button, select STOP and press the OK button, then select
RUN and press the OK button. Now when you press the ESC button the display
should revert back to the initial screen and the BW counts should indicate 00000. Of
you find any other error codes, you will be required to replace the controller.
Turbo Disk Filters- Refer to the appropriate service manual but here are a few thing to look for.
a. Air is required on the majority of the Turbo Disk units. It requires minimally 80 psi
to operate the system. Make sure that air is available for the unit and that as the
failure occurred that air was present (if the failure occurred while you where not on
site)
b. The DP switch is used to manually initiate a back wash by rotating the gauge’s knob
until the striker comes in contact with the red pressure indicator.
c. The air operated actuators must move freely, if they are sluggish make sure that a
moisture separator is on the air line at the filter to remove any water from the air
supply.