Replacing Method Of Parts - Toshiba MMU-P0121H Service Manual

3-12. REPLACING METHOD OF PARTS

3-12-1. Replacement and Check of Electric Parts
• Remove the front panel. (M5 x 7)
• Disconnect all wires connected to the electric parts box.
Temp. sensor, pressure sensor, complete, 2-way valve, PMV A
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( : It is not provided in the cooling only model.)
• Remove the electric parts box. (M5 x 4, M4 x 3)
Since the upper part of the box is formed as hanging shape, lift up the box and pull out toward you.
3-12-2. Replacement of Propeller Fan/Fan Motor
• Remove the fan guard. (M4 x 6)
• Loosen tightening screw of the propeller fan with a hexagonal wrench, and remove the propeller fan
upward.
• Remove the front panel, and remove the fan motor lead connector in the electric parts box.
• Remove the discharge cabinet. (M5 x 4)
• Remove the suction panel at the front side. (M5 x 4, M4 x 2)
• Remove the tie wrap, etc. which fix the fan motor lead wire, and pull in the fan motor lead wire closer to the
fan motor.
• Remove the fan motor from the fan base. (M8 x 4)
NOTE :
Weight of the fan motor is approx. 10kg.
If screws of the motor, etc. fall inside of the cabinet, it may be difficult to pick them up.
3-12-3. Replacement of Accumulator
• Recover refrigerant.
• Remove the front panel. (M5 x 7)
• Remove the panel at rear side. (M5 x 7)
• Remove pipe connected to the accumulator.
• Remove the screws fixing the accumulator. (M6 x 2)
• Replace the accumulator.
3-12-4. Replacement of Liquid Tank
• Recover the refrigerant.
• If the liquid tank is installed with connection, remove the connecting pipe and pull out the outdoor unit.
• Remove the discharge cabinet. (M5 x 4)
• Remove the front panel. (M5 x 7)
• Remove the suction panel at the front side. (M5 x 4, M4 x 2)
• Remove the panel at the rear side. (M5 x 7)
• Remove the suction panel at the rear side. (M5 x 4, M4 x 2)
• Remove the left side plate. (M5 x 8, M4 x 2)
• Remove the fan base. (M8 x 4)
• Remove the evaporator cover. (M5 x 2, M4 x 1)
• Remove the waterproof board. (M4 x 3)
• Remove the heat exchanger at the front side. (M5 x 2, two brazing positions)
• Remove the pipe connected to the liquid tank.
• Remove the screws fixing the liquid tank. (M6 x 3)
• Replace the liquid tank.
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, PMV B and 4-way valve
3-146
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, etc.