Liquisys M CLM223/253 Repair
Endress+Hauser 95
10 Repair
10.1 Spare parts
Please order spare parts from your local Sales Office. For this purpose, use the order
numbers listed in the "Spare part kits" section.
For safety, you should always provide the following additional data when ordering spare
parts:
• Device order code
• Serial number
• Software version, if possible
You can take the order code and serial number from the nameplate.
The software version is provided in the device software provided that the device processor
system is still working.
For more detailed information on spare parts kits, please refer to the "Spare Part Finding
Tool" on the Internet:
www.endress.com/spareparts_consumables
10.2 Disassembling the panel-mounted device
Please note the effects on the process if the device is taken out of service!
See the exploded drawing for the item numbers.
1. Disconnect the terminal block (item 420 b) from the rear of the device to de-energize
the device.
2. Then disconnect the terminal blocks (item 420 a and 430 where applicable) from the
rear of the device. Now you can disassemble the device.
3. Press in the latches of the end frame (item 340) and remove the frame from the rear.
4. Release the special screw (item 400) by turning it counter-clockwise.
5. Remove the entire electronics block from the housing. The modules are only
mechanically connected and can be easily separated:
6. Simply remove the processor/display module towards the front.
7. Pull out the brackets of the rear plate (item 320) slightly.
8. Now you can remove the side modules.
9. Remove the conductivity transmitter (item 240) as follows:
10. Using a fine wire cutter, nip off the heads of the synthetic distance holders.
11. Then remove the module from above.
Assembly is the reverse of the disassembly sequence. Tighten the special screw finger-
tight without using a tool.
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