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3.3 Disassembly
Before disassembly of the flow switch disconnect or isolate any electricity supply or circuit and
depressurize the pipe.
Warning:
do not disassemble the level switch before the pipe has been emptied.
3.3.1
Open the housing.
3.3.2
Disconnect the electric circuit cables. Close the housing.
3.3.3
Unscrew the connection bolts.
3.3.4
Extract the instrument from its slot paying attention to avoid any damage to the vane.
Periodical inspections are necessary to guarantee complete efficiency of the unit. A regular maintenance
programme starting from its initial installation is recommended. The suggested precautions are
important to obtain the best operating conditions of the level control.
The instrument does not require preventive maintenance, however it is recommended that from
time-to-time a check of the liquid fluidity is actioned to avoid any suspensions or deposits that can
influence wetted parts.
The available spare parts are detailed below. No other parts are supplied as spares.
Available spares
Contacts
To replace the contact:
1.
Open the housing and remove the visual indicator (if present).
2.
Disconnect cables from the electrical circuit, taking note of their position on the microswitch.
3.
Unscrew the screws (
1
) and remove the block with the switch.
4.
Unscrew the screws (
2
) and remove the switch from the bracket.
5.
Place the new switch onto the bracket and secure it by tightening the screws (
2
).
6.
Place the block with the switch and secure it by tightening the screws (
1
).
7.
Reconnect the electrical cables and close the housing after repositioning the visual indicator
(if present).
4. Spare parts
2
1