Replacing The Sealing Ring And Fastening Nut On The Liquid Tube; Troubleshooting - Mettler Toledo Q3 Manual De Usuario

3 CAUTION: Injury due to splashing liquids. Make sure that the pressure in the bottle is released.
Remove the dosing head from the dosing or liquid module.
4 WARNING: Injury or contamination from hazardous
substances. Be aware of any liquid draining from the
tubing and the valve.
Open the dosing head with the micro dosing valve tool
(1), if applicable.
5 Take out the micro dosing valve and clean it, e.g., in an
ultrasonic bath.
6 After the cleaning, reinstall the micro dosing valve and
refill/replace the bottle.

6.2 Replacing the sealing ring and fastening nut on the liquid tube

Removing the sealing ring and the fastening nut
If liquid is leaking from the dosing head nut, replace the
sealing ring and fastening nut at the dosing head (1). If
pressure cannot be built in the bottle, replace the sealing ring
and fastening nut at the bottle cap (2).
The pressure is released.
1 CAUTION: Injury due to splashing liquids. Make
sure that the pressure in the bottle is released.
Unscrew the fastening nut at the dosing head or the bottle
cap.
2 To access the sealing ring (1), slide back the fastening
nut (2).
3 If changing the nut and ring at the bottle cap, remove the
suction filter and slide the sealing ring all the way to the
bottle-end of the tube.
4 Using a tube cutter or a sharp knife, cut off the tube above the sealing ring (1).
5 Remove the fastening nut.
Reconnecting the liquid tube
Insert the new fastening nut sealing ring, and reconnect the liquid tube.
See also
Connecting the tubes Page 14

7 Troubleshooting

For further information, consult the Reference Manual (RM) of your XPR balance.
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u www.mt.com/XPR-analytical-RM
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Q3 Dosing Module