Service Manual

─ 48 ─
When removing the power circuit boards or reactors
Control box cover
[1] Remove the screws (eight PT screws 4×8,
indicated by ) to remove the control box
cover.
[Upper unit]
a. Disconnect the connectors (indicated by ).
Control circuit board
Power circuit board (upper) Reactor
Power circuit board
b. Remove the screws (two PT screws 4×8, indicated by ), and remove the power circuit board (upper).
c. Remove the screws (two PT screws 4×8, indicated by
), and remove the reactor.
[Lower unit]
a. Remove the control circuit board.
→ See (5) [2] and [3] (on page 47).
b. Remove the power circuit board. → See (4) [4] and [5] (on pages 45 and 46 ).
c. Remove the reactor. → See (4) [6] to [8] (on
page 46 ).
When reassembling
Reassemble the unit in the reverse order of disassembly.
After reassembly, always make a test run to be sure that the unit operates properly.
[2] Remove the circuit boards and reactors.
Precaution
When disconnecting the motor connec-
tors, make sure that the power supply
is turned off and all LEDs are unlit.
Even when the fan motor is stopped,
disconnecting the live-line connec-
tors will cause a motor malfunction.
LED6
CN10
TAB1
TAB2
CN12
CN113
CN121
Assembly precaution
After connecting the motor connec-
tors (CN9, CN10), check the wiring
inside the main unit.
Push in the motor leads until their
cord bands touch the cord bush.
Push in the
leads.
Cord band
Cord bush
CN9