Maintenance

Signal Hold feature                                             

The signal HOLD – ON/OFF feature is used to set and maintain the sensor output signal data at a constant value during periods when the sensor is not stable and/or fluctuating significantly due to maintenance and calibration. Maintaining a “user set” output signal from the panel allows the sensor to removed and/or maintained while preventing “out of compliance” network alarms. When activated, the HOLD feature allows the user to set and retain the output signal for both sensor parameters for a period of 15 minutes, after which the unit returns to normal operation and live reading output value. 

Long press OK button for 3 seconds on the main interface to open the HOLD – ON/ OFF page. The cursor shows black is the selection mode, and blue is the editing mode. Click the OK key to enter the editing mode, and the up/down keys can be used to adjust the value of the setting item. Once set where desired, click the OK button to start the HOLD-ON function. 

General Maintenance                                              

The APFCL Water Analyzer requires very little maintenance. However, the chamber and tubing should be checked weekly for leaks and debris. This is especially important when water supply has higher turbidity. 

Monthly – check for leaks. Clean any moisture and dirt. Inspect unions and hardware. Inspect system for corrosion or unusual wear. 

Yearly – Inspect tubing connections and replace. Thoroughly clean and replace any corroded hardware. Inspect all wiring and wiring connections. 

Cleaning. Most cleaning of the APFCL is facilitated by removing the sensor, rinsing it with tap or DI water and gently wiping the sensor head with a soft cloth or Q-tips, then re-rinse. For a highly fouled sensor, soak the lower half of the sensor in sensor cleaning solution for 10-15 minutes. Gently rub the sensor electrode head with the provided Q-tips. If the surface is not entirely clean, continue to soak the sensor for an additional time until clean. Rinse the sensor with distilled water. 

Replacing Components 

The following components may need replacement after many years of use.    

Replacing Electrode Head on Sensor. 

The pH/CL2 electrode head of FCL700 Probe can be replaced when the original electrode head reaches its working life. Order a replacement electrode head (P/N EC700) from Blue- White and follow instructions as below.  

1. Turn off the sensor if it is powered on.  
2. Make sure there is no water on the sensor.  
3. Hold the FCL700 main body with one hand and use the other hand to twist the stainless-steel locking ring counter-clockwise until the front end of the black electrode is completely unscrewed, as shown in Figure 2.  
4. Pull out the electrode head as shown in Figure 3.  
5. Loosen the electrode plug connector, and remove the electrode head, as show in Figure 4.  
6. To assemble the new electrode head, connect the plug, then insert the new electrode head into the main sensor housing and ensure that the two protrusions on the electrode head are aligned with the notches in the sensor main housing.  
7. Then twist the stainless-steel lock ring of FCL700 in a clockwise direction until the threads of the electrode head completely enter the FCL700 housing as shown in Figure 1.  

FAQs

Frequently Asked Questions