Endress+Hauser Liquisys M CUM223, Руководство по эксплуатации

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Repair Liquisys M CUM223/253
88 Hauser
9.2 Dismantling the field instrument
Please note the effects on the process if the device is taken out of service!
To dismantle the field instrument you need the following tools:
• Standard set of screwdrivers
• Torx-screwdriver size TX 20
Proceed as follows:
1. Open and remove the cover of the connection compartment (item 420).
2. Disconnect the mains terminal (item 470) to de-energize the device.
3. Open the display cover (item 410) and loosen the ribbon cables (item 310/320) on the
side of the central module (item 40 to 90).
4. To remove the central module (item 40), loosen the screw in the display cover
(item 450 b).
5. Proceed as follows to remove the electronics box (item 330):
– Release the screws in the housing base (item 450 a) with two revolutions.
– Then push the entire box backwards and remove it from above.
– Make sure that module locks do not open!
– Loosen the ribbon cables (item 310/320).
– Bend the module locks out and remove the modules.
6. To remove the docking module (item 340), remove the screws in the housing base
(item 450 c) and remove the entire module from above.
7. Proceed as follows to remove the turbidity transmitter (item 270):
– Using fine side-cutting pliers, nip off the heads of the plastic distance holders.
– Then remove the module from above.
To assemble, carefully push the modules into the trolley tracks of the electronics box and let
them engage in the side box noses.
Incorrect mounting is not possible. Modules inserted in the electronics box incorrectly
are not operable since the ribbon cables cannot be connected.
Make sure the cover seals are intact to guarantee IP 65 ingress protection.