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!
CAUTION
Observe ESD safety
precautions! See the
information on page 8
Release the piping system of the Testomat
Internal flush
tion
Switch off the device.
Remove the hose connections on the filter housing.
Unscrew the supply nozzles.
Remove and clean the seal, spring and filter.
Remove the locking pin and pull it out of the flow regulator.
Remove the flow governor core.
Clean the filter housing with water or alcohol and reconstruct it.
Ensure that you insert the filter sieve with the top facing down!
Attach the hose connections to the filter housing.
Observe the following during maintenance measures
Water ingress at the sealing points may lead to the device compo-
nents being damaged!
Leak resistance test
Perform a leak resistance test before the first analysis:
Switch the device to "Pause".
Fill the measuring chamber during manual operation
Measure out the indicator dose by hand. To do so, press the
"Manual" button on the dosing pump.
Check the connections and sealing points for leakage.
Care instructions
The surface of the device is untreated. Avoid therefore any soiling
with indicator, oil or grease. However, if the housing is soiled, clean
the surface with isopropyl alcohol (never use any other kind of sol-
vent).
Replacing the backup battery
When the device is switched off the internal clock is powered by a
lithium backup battery (CR2032 type), which is designed to have a
service life of 10 years. After this period, it should be replaced for
preventive reasons, and always ensuring a measured voltage <2.3V.
The following is required when replacing the battery
• A Phillips-tip screwdriver
• A replacement battery CR 2032
Replace the battery
Switch off the device and disconnect it from the power supply
Open the upper housing door
Servicing and maintenance
®
manually.
as follows:
EVO TH with the func-
71
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