Reference Manual

Draft
6 Maintenance
Please contact your METTLER TOLEDO representative for details about the available service options. Regular
servicing by an authorized service technician ensures constant accuracy for years to come and prolongs the
service life of your instrument.
For further information, consult the XPR Reference Manual (RM).
u www.mt.com/XPR-analytical-RM
The appropriate maintenance interval depends on your standard operating procedure (SOP).
6.1 Cleaning
WARNING
Risk of electric shock
1 The power cable must be disconnected prior to cleaning and maintenance.
2 Use only the power cable from METTLER TOLEDO, if it needs replacing.
3 Ensure that no liquid comes into contact with the terminal or the AC adapter.
4 Never open the instrument housing, terminal, or AC adapter – they contain no components that
can be cleaned, repaired, or replaced by the user.
NOTICE
Damage to the instrument due to inappropriate cleaning methods
The instrument can be damaged by certain cleaning agents, solvents, or abrasives. If liquids enter
the housing, they can damage the instrument.
1 Only use a wet cloth with water and a mild detergent to clean the instrument or terminal.
2 Wipe off any spills immediately.
3 Make sure that no liquid penetrates the instrument.
6.1.1 Cleaning the housing
The housing of the dosing module, dosing lift, and liquid module is the same as the one of the balance. All
surfaces can therefore be cleaned with a commercially available, mild cleaning agent.
6.1.2 Cleaning the weighing chamber
The cleaning procedure is the same as for the balance. Refer to the Reference Manual (RM) of the balance for
more details.
6.1.3 Cleaning the liquid dosing elements
Cleaning the suction filter
1 Once a week, check visually that the suction filter is clean. If necessary, rinse the suction filter with solvent
using the Purge function or replace it.
2 At least once a year, change suction filter. Maintenance interval depends on the liquid used.
Cleaning the liquid dosing head
The liquid dosing head can be rinsed/purged by letting a large quantity of solvent (or another liquid) run through
it. Use the Purge function. See the Reference Manual (RM) of the XPR balance.
If purging is not enough, clean the liquid dosing head as follows.
Maintenance20 QLX3 Liquid Module