MANUALPC-2010 CHAPTER II – INSTALLATION Page 15
PPM SENSORS
The following new, improved PPM Sensors (Model
2010) are available with PC controllers:
- PPM002 for 0-2 PPM (mg/l) of Free Chlorine
- PPM010 for 0-10 PPM (mg/l) of Free Chlorine
Both use the same membrane Part Number
PPMM01
- PPM200 for 0-200 PPM (mg/l) of Free Chlorine
w
ith membrane part number PPMM02
- PPMSLT 0-10 PPM Membraneless Sensor for
electrolytic chlorine generators.
NOTES
1. These new sensors are not affected by cyanuric
acid - therefore the new CH255/265 (Version 2010) have no
GAIN FACTOR adjustment.
2. All sensors use the same flow cell PPMCLL and do not
require the plastic spacer ring.
PPM Sensor Flow Cell
Figure 12 - PPM Sensor Flow Cell
The PPM Sensor must be installed in the specially designed
flow cell for better water flow control. Install the flow cell on a
bypass line with 3/8” tubing as shown above.
Make sure that the bypass line is located after the filter and
that there is a sufficient but not excessive flow of water. The
recommended flow rate is between 20 to 100 l/h (0.1 to 0.6
gal/min.) with a best value of about 30l/h (0.2 gal/min).
SPAS
For a spa, it is recommended to increase the flow rate
sufficiently to avoid the formation of air bubbles and to install
the cell horizontally with the inflow coming in from the bottom.
Figure 13 - PPM Sensor Package
PPM Sensor Installation
The new PPM Sensors are shipped in a molded foam package
containing:
- One (1) chlorine sensor with warranty serial number,
- One (1) compression fitting with O-ring,
- One (1) electrolyte cap with membrane,
- One (1) electrolyte bottle and screw-on filling tip,
- One (1) screwdriver (not needed if pre-wired).
In order to prevent serious damage to the sensor, be careful
not to touch the membrane or the electrodes. To facilitate
shipment and storage of the sensor, it is not fitted with the
electrolyte cap until ready for installation. The sensor cap must
be filled with the electrolyte solution immediately before usage
and emptied during storage.
Fill the sensor cap with the electrolyte taking care to prevent air
bubbles. Fill the cap to the bottom of the threaded section.
Thread the sensor into the cap as far as it will go while making
sure not to touch the membrane film at the bottom with your
fingers. Excess air and electrolyte may escape through the
hole below the rubber seal. Wipe any excess electrolyte with a
soft tissue. Contact your CHEMTROL
(R)
dealer if you need
additional electrolyte.
Slide the O-ring over the sensor tip up to the compression ring.
Finally, insert the sensor with O-ring in the flow cell and make it
finger tight.
For best performance, it is recommended to change the
membrane cap and electrolyte at least once a year.
PPMSLT SENSOR
The PPMSLT sensor does not use a membrane and has a
different open-through cap that holds the electrolyte solution
around the electrodes glass shaft. Because this cap is opened
from both sides, the procedure to fill it with the necessary
electrolyte is slightly different in that you must do so with the
accompanied lid on before fully screwing that cap onto the
electrodes then finally removing that lid.
The PPMSLT sensor is the only sensor that requires cleaning
of its gold electrodes tip and you do so with the small special
abrasive cleaner the sensor is shipped with.
To Next Page
Loading...
