HACH LANGE APA 6000 Maintenance Et Dépannage page 12

Examine the tubing and fittings
1. Examine all the tubing and fittings for leaks and/or damage.
2. Replace tubes with leaks or damage. Refer to
on page 14.
3. Tighten or replace fittings as necessary to stop leaks. Refer to
Replace a tube on page 14 to tighten or replace fittings.
4. Examine for contamination buildup in the tubing. If contamination
buildup is seen, start a cleaning cycle.
a. Push MENU.
b. Select SENSOR MENU>APA6000 #1 APA 6000>SOLUTIONS
AND CLEANING>INSTRUMENT CLEAN>CLEAN SYSTEM
NOW.
Clean the mixing chamber
Clean the mixing chamber when it becomes discolored by biogrowth,
staining or sediment.
Items to collect:
• Phillips screwdriver
• Cotton swabs
• 10% household bleach solution
• Deionized water
1. For safety reasons, do a cleaning cycle before the mixing chamber is
opened.
a. Push MENU.
b. Select SENSOR MENU>APA6000 #1 APA 6000>SOLUTIONS
AND CLEANING>INSTRUMENT CLEAN>CLEAN SYSTEM
NOW.
2. When the cleaning cycle is complete, put the analyzer in shutdown
mode. Refer to Put the analyzer in shutdown mode
3. Use the Phillips screwdriver to loosen the two screws that attach the
mixing chamber to the front of the mixing module. Note that the block
is divided into two pieces. Refer to
12 English
Replace a tube
on page 5.
Figure 5.
4. Separate the two pieces of the mixing chamber block. Make sure not
to lose the stir bar.
5. Let the top part of the mixing chamber block hang from the attached
tubing.
6. Use a cotton swab soaked with a 10% household bleach solution to
clean the mixing chamber parts. If necessary, also clean the surface
that the stir bar sits on and the stir bar.
7. Use deionized water to fully rinse the cleaned surfaces and stir bar.
8. Reassemble the mixing chamber. Make sure that the O-ring and stir
bar are correctly installed in the mixing chamber. Refer to
9. Use the Phillips screwdriver to tighten the two screws that attach the
mixing chamber to the mixing module.
10. Start the analyzer. Refer to
on page 5. The analyzer automatically starts sample measurement.
Figure
Put the analyzer back into operation
5.