HF scientific CLX Online Residual Chlorine Monitor - Manual (Page 36)

CLX (1/12) Page 31
REV 5.1
10cc Syringe
Leur-Lok Barbed Adapter
Indicator Reagent Preparation
Add about 400 ml of deionized water into the indicator bottle. Cap tightly and shake
vigorously until the powder is dissolved. Remove the cap and add the contents of the DPD
powder bottle (small brown bottle). Cap and shake to fully dissolve the powder. When
fully dissolved add enough deionized water to bring the volume in the bottle up to the fill
line.
Once mixed the reagents have a expected life of 30 days. Write the mixing
date on the reagent bottle labels in the area provided. Dispose of expired
reagents correctly.
To replace the reagents, press the SERVICE button; this will empty the cuvette and stop
any flow of water. Remove the cap on both bottles replace with the blue cap supplied with
the CLX. Be sure to replace the reagents in the correct location as labeled on the inside of
the CLX. The buffer is installed on the left and the indicator is installed on the right side.
The suction tube for both reagents will reach the bottom of the bottles.
To complete the replacement procedure, press the PRIME button and then the  button.
This will draw enough of each reagent to completely prime the tubes and replace any old
solution. The system will automatically return to normal operation after it has primed.
Use caution when changing the reagents as they are caustic. These reagents
will stain clothing and anything they contact. After changing the reagents,
operators should wash their hands.
10.3 Check Valve Flushing Kit
Sometimes upon initial commissioning, the check valves stick and require manual
priming. This should not be needed after commissioning. Be careful when using this kit to
use only chlorine free water. Complete instructions are included in the kit.
Figure 8: Check Valve Flushing Kit