28
Servicing the
Pool Pilot
Cell
The
Pool Pilot
Cell may require removal for periodic visual inspections, or for servicing when debris or calcium mineral deposits develop. The need to inspect and service the cell
i
s
indicated by the following display messages: “Check System” light, and the message, “Check/Clean Cell”, or ”Purifier Off - C
able
Flow”.
The
Pool Pilot
Cell is installed with Unions on each end to allow quick and easy installation and removal.
9.
The DIG-220 should detect a low water flow at the Tri-
s
ensor, and activate the red Check System LE D.
The DIG-220 will also display the message “Purifier Off! Check Flow.”
1.
Turn off circulator pump.
2.
Slightly loosen the union nut just below the cell on the side of the manifold that does not contain the filter
screen.
3.
Completely loosen the manifold union nut that contains the filter screen and pivot the manifold to gain
access to the filter screen.
4.
Remove the screen. Clean the screen if dirty.
5.
If the screen was dirty, then the system may need to be purged to remove excess debris. Leave the
manifold off and run the pump for a few seconds until clear.
6.
Wrap the strainer screen securely with a small piece of plastic wrap (saran wrap, food wrap or zip lock
bag) as indicated in the diagram, place it back in the union.
7.
Hand tighten the two unions that were loosened.
1.
Turn off pump and shut off all power.
2.
Detach the
cel
l cable from the
Pool Pilot
Cell
3.
Unscrew the unions at both ends of the
Pool Pilot
Cell.
4.
Slide the
Pool Pilot
Cell out of the Manifold
Assembly.
DO NOT operate system with a faulty flow switch
The
following procedure can be used to verify the proper operation of the flow switch, or to flush debris from the
Bypass
Valve.
8.
Turn on the pump and the DIG-220. The plastic will stop water flow to the flow switch, which is part
gh
of the Tri-
s
ensor that is located in the upper portion of the manifold. All water will be forced throu
the Bypass Valve. This action will normally flush out any small bits of debris trapped in the
Byp
a
ss
Valve.)
7.
Check the
T
ri-sensor assembly for any damage to the plastic housing and replace if neede
d.
1.
Disconnect the Tri-
s
ensor cable from the power center. (Place the end of the cable out of the way, where it will stay dry when the Tri-
s
ensor is removed.)
Please note all
cautions and warnings!
2.
Remove the two (2) screws retaining the Tri-
s
ensor in the Tee joint of the Manifold.
3.
Note the orientation of the Directional of Flow Tab. The Tri-
s
ensor must be installed in the same orientation when it is reins
t
alled or replaced.
4.
The Tri-
s
ensor can now be pulled out of th
e Tee
. Firmly grip the Tri-S
s
nsor assembly (this is typically done with a large pair of channel lock pliers). Twist the Tri-
s
ensor back-
and-forth while simultaneously pulling the Tri-Sensor straight out of the Tee joint.
Do not use any metallic objects to scrape the blade surfaces or you will remove or damage the blade sensor coating.
To remove a calcium scale buildup, mix one (1) part Muriatic Acid into four (4) parts water. Mix the solution in a small contai
n
er tall enough to cover the sensor
blades.
Always add acid to water, never water to acid, see warnings above.
Immerse the salt sensor blades in the solution for up to 15-minutes. An effervescing action indicates the calcium is being
d
issolved from the blades.
Rinse with fresh water and reinspect. Repeat the acid treatment as necessary until all scale has been eliminated. Use care n
ot to a
llow the pin connection to ge
t
wet.
5.
Inspect the following on the flow switch: Verify the thin metallic paddle is straight and free from erosion; verify the
long plastic
post is straight and free of cracks. Do not twist
or bend the paddle or the plastic post. (see fig 30 on page-26 for illustration of Tri-
s
ensor flow paddle.)
6.
Inspect the two salt sensor blades. The blades should not have any mineral deposits (scale) or other debris on them. If the bl
ad
es need to be cleaned, use the following method
:
MAINTENANCE
Removing\Inspecting\Cleaning the Tri-
s
ensor
Continued (Pump must be off)
:
Testing the Flow Switch, Cleaning the Filter Screen,
Cleaning the Bypass Valve
The flow switch is a critical equipment protection device. When water flow has stopped, to prevent damage to the cell or system, it is important power to the
Pool Pilot
Cell be
automaticall
y
turned OFF. It is important to verify the proper operation of th
e T
ri-
s
ensor’s water Flow Switch protection device.
CHEMICAL HAZARD...
To avoid damaging splashes, always add acid to water,
never water to acid. Wear safety glasses and use other appropriate personal
protection equipment.
Failure to heed the following may result in permanent injury or death.
WARNING
Failure to heed the following may result in equipment damage.
NOTICE
FIG-33
S
TRAINER
S
CREEN
S
HOWN
T
EMPORA
RI
LY
W
RAPPED
IN
P
LASTIC
10. If the DIG-220 did not display this warning, then check the Tri-
s
ensor cable connections and inspect the Tri-
s
ensor as outlined in the previous section. If the warning message
still does not appear, then turn the DIG-220
off
and contact the factory or your local dealer for assistance.
11.
Turn the pump off.
12. Loosen the unions.
13. Remove the plastic wrap and replace the strainer screen. Hand tighten unions.
14. Resume normal operation.
Pool Pilot Cell and Unions
– (
SIDE
VIEW
)
FIG-34
Continued Next Page...
