Mitsubishi Electric PUHZ-W112VAA 11.2kW Mono, Руководство по обслуживанию

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OCH681
OPERATING PROCEDURE PHOTOS/FIGURES
11. Removing the 4-way valve coil (21S4), LEV coil (LEV-A, LEV-B)
and lead wire for high pressure switch and high pressure sensor
(1) Remove the electrical parts box. (See Photo 3-1)
(2) Loosen the bands for the lead wire.
[Removing the 4-way valve coil]
(3) Remove the 4-way valve coil fixing screw (1 for front/ M5)
to remove the 4-way valve coil.
(4) Slide the 4-way valve coil forward to remove it.
[Removing the LEV coil]
(3) Loosen the lead wires fixed to the pipes with bands.
(4) Slide the LEV coil upward to remove it.
[Removing the lead wire for high pressure switch]
(3) Disconnect the lead wire from the high pressure switch.
[Removing the lead wire for high pressure sensor]
(3) Disconnect the lead wire from the high pressure sensor.
Photo 11
12. Removing the 4-way valve, LEV (LEV-A, LEV-B), high
pressure switch and high pressure sensor
(1) Remove the nozzle of plate heat exchanger for the water
piping. (See Photo 14)
(2) Remove the service panel. (See Photo 1)
(3) Recover refrigerant.
(4) Remove the electrical parts box. (See Photo 3-1)
(5) Remove the side panel (R). (See Photo 1)
[Removing the 4-way valve]
(6) Remove the 4-way valve coil.
(7) Remove the welded part of 4-way valve (4 positions) to
remove the 4-way valve.
[Removing the LEV]
(6) Remove the LEV coil.
(7) Loosen the LEV fixed to the pipe with a band and rubber
mount.
(8) Remove the welded part of LEV (2 positions) to remove
the LEV.
[Removing the high pressure switch]
(6) Disconnect the lead wire from the high pressure switch.
(7) Loosen the high pressure switch fixed to the pipe with a
band and rubber mount.
(8) Remove the welded part of high pressure switch (1 posi-
tion) to remove the high pressure switch.
[Removing the high pressure sensor]
(6) Disconnect the lead wire from the high pressure sensor.
(7) Loosen the high pressure sensor fixed to the pipe with a
band and rubber mount.
(8) Remove the welded part of high pressure sensor (1 posi-
tion) to remove the high pressure sensor.
Note 1: Recover water in the plate heat exchanger before
removing the water piping.
Note 2: Recover refrigerant without spreading it in the air.
Note 3: When installing the following parts, cover it with
a wet cloth to prevent it from heating as the tem-
perature below, then braze the pipes so that the
inside of pipes are not oxidized;
• 4-way valve, 120°C or more
• LEV, 120°C or more
• High pressure switch, 100°C or more
• High pressure sensor, 100°C or more
High pressure
switch
LEV coil
(LEV-B)
LEV coil
(LEV-A)
High pressure
sensor
4-way valve coil
fixing screw
4-way valve
LEV
4-way valve coil