Liquisys M CUM223/253
Repair
Hauser
85
9
Repair
Spare parts are to be ordered from your sales center responsible. Specify the order numbers
listed in the chapter "Spare parts kits".
To be on the safe side, you should
always
specify the following data with your spare part
orders:
• Instrument order code (order code)
• Serial number (serial no.)
• Software version where available
Refer to the nameplate for the order code and serial number.
The software version is displayed in the instrument sofware (see chapter "Instrument
configuration") if the instrument processor system is functional.
9.1
Dismantling the panel-mounted instrument
Please note the effects on the process if the device is taken out of service!
Please refer to the following diagram for the item numbers.
1. Disconnect the terminal block (item 426 b) from the rear of the device to de-energize
the device.
2. Then remove the terminal blocks (item 426 a and item 430) 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:
– Simply remove the processor/display module from the front.
– Pull out the brackets of the rear plate (item 320) slightly.
– Now you can remove the side modules.
6. Remove the turbidity transmitter (item 270) as follows:
– Using fine side-cutting pliers, nip off the heads of the plastic distance holders.
– Then remove the module from above.
Assembly is the reverse of the disassembly sequence. Tighten the special screw hand-tight
without a tool.
