Hach APA 6000 Maintenance Et Dépannage page 15

If a rotary valve fitting has been over-tightened, cut off the pinched
end of the tube and use a new ferrule.
Note: In some cases, a tool may be necessary to tighten a fitting a maximum
of ¼ turn. Loose fittings result in air or liquid leaks and poor analyzer
performance.
12. Push MENU and select SENSOR MENU>APA6000 #1 APA
6000>SOLUTIONS AND CLEANING>PRIMING>PRIME ENTIRE
SYSTEM NOW. Priming takes 7–15 minutes.
Note: When priming starts, a pop-up window shows the time that remains to
complete the prime cycle.
13. Examine the fittings on the ends of the replacement tube for leaks.
Tighten the fittings as necessary to stop leaks.
14. When the priming is complete, start the analyzer. Refer to
analyzer back into operation
starts sample measurement.
Figure 7 Fitting – 10-32 rotary valve
1 Ferrule 2 Hex nut, 10-32
Put the
on page 5. The analyzer automatically
3 Tubing, Tefzel, 0.030-
in. ID x 0.062-in. OD
Figure 8 Fitting – ¼-28 flat bottom
1 Ferrule with locking 3 Tubing, Tefzel, 0.030-
ring in. ID x 0.062-in. OD
2 Fitting, flangeless nut, 4 Chamfered end
¼–28
Replace a fuse
D A N G E R
Electrocution hazard. Remove power from the instrument before doing
maintenance or service activities.
D A N G E R
Fire hazard. Use the same type and current rating to replace fuses.
1. Open the analyzer door.
2. Open the module panel.
5 Flat end
English 15