Maintenance
Liquisys M CPM223/253
78
Hauser
6.
Enter the serial number:
– Read the serial number (“ser-no.”) off the nameplate of the device.
– Enter this number in the fields E115 (year, one-digit), E116 (month, one-digit), E117 (cons.
number, four-digit).
– In the field E118, the complete number is displayed again so you can check it is correct.
"
Caution!
You can only enter the serial number for modules fresh from the factory with the serial
number 0000. This can only be done
once
! For this reason, make sure the number entered
is correct before you confirm with ENTER!
Entry of an incorrect code will prevent the additional functions from being enabled. An
incorrect serial number can only be corrected at the factory!
Press ENTER to confirm the serial number or cancel the entry to enter the number again.
7.
If available, enter the release codes for the Plus Package and/or Chemoclean in the "Service"
menu.
8.
Check the Plus Package release (e.g. by opening the function group CHECK / Code P) or the
Chemoclean function.
9.
Make the customer device settings again.
7.2
Maintenance of the entire measuring point
7.2.1
Cleaning the transmitter
Clean the front of the housing with usual commercial cleaning agents.
In accordance with DIN 42 115, the front is resistant to:
• Isopropanol
• Diluted acids (max. 3%)
• Diluted alkalis (max. 5%)
• Esters
• Hydrocarbons
• Ketones
• Household cleaners
"
Caution!
For cleaning purposes, never use:
• Concentrated mineral acids or alkalis
• Benzyl alcohol
• Methylene chloride
• High-pressure steam
