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Flow switch
No. Part to be replaced
Work procedure
Remarks
1. Detachment
1) Close the water supply source valve.
2) Carry out the detachment of item
4
(Electrical control
box).
3) Slowly, turn the cap of flow switch completely and then
lift the flow switch upward.
NOTE:
Use some clothes to avoid water dropping.
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2. Attachment
1) Carry out installation by following the detachment
procedure in reverse.
NOTE:
• The flow switch connection uses a O-ring for water seal.
Be careful not to scratch the O-ring. Otherwise, water
leakage may occur.
• Place the flow switch parallel to the water outlet pipe.
• The flow switch wire is placed on the right side. Refer to
item
4
(Electrical control box).
• Be careful to attach the proper flow switch as shown
below.
• After the flow switch replacement repair, open the water
supply source valve and water piping valve to pass
water through the unit, and check that the flow switch
connection has no water leakage.
• Carry out the work of air ventilation in water circuit.
Cloth
Open
Cap
Lift
Cloth
Open
Cap
Lift
Blue cap for
Blue cap for
027 type
027 type
Black cap for
Black cap for
056type
056type
Check the arrow marked
Check the arrow marked
on the flow switch.
on the flow switch.
Blue cap for
027 type
Black cap for
056type
Check the arrow marked
on the flow switch.
Flow switch
Oring
Water flow direction
Parallel
Water outlet pipe
Flow switch
Wire
Flow switch
Oring
Water flow direction
Parallel
Water outlet pipe
Flow switch
Wire
Pipe cover panel
1. Detachment
1) Remove wires which are connected to the terminal
block and then remove wiring from the wiring port.
2) Remove the screws for the pipe cover panel.(4x10, 5pcs.)
2. Attachment
1) Carry out installation by following the detachment
procedure in reverse.
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