Mitsubishi Electric PUHZ-P100VHA.UK Service Manual page 92

OPERATING PROCEDURE
10. Removing the bypass valve
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove the electrical parts box. (See photo 3.)
(4) Remove 3 right side panel fixing screws (5
rear of the unit and remove the right side panel.
(5) Remove the bypass valve solenoid coil. (See photo 7.).
(6) Collect the refrigerant.
(7) Remove the welded part of bypass valve.
Note 1: Collect refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by
removing the right side panel.
11. Removing the high pressure switch (63H)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove the electrical parts box. (See photo 3.)
(4) Remove 3 right side panel fixing screws (5
rear of the unit and remove the right side panel.
(5) Pull out the lead wire of high pressure switch.
(6) Collect the refrigerant.
(7) Remove the welded part of high pressure switch.
Note 1: Collect refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by
removing the right side panel.
Note 3: When installing the high pressure switch, cover it
with a wet cloth to prevent it from heating (100°C
or more), then braze the pipes so that the inside
of pipes are not oxidized.
12. Removing the reactor (DCL)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove the electrical parts box. (See photo 3.)
(4) Remove 4 reactor fixing screws (4
reactor.
w The reactor is attached to the rear of the electrical parts box.
Photo 9
Solenoid
10) in the
valve coil
<Bypass valve>
fixing screw
Solenoid
valve coil
<Bypass valve>
(SV)
Photo 10
10) in the
Photo 11
10) and remove the
92
PHOTOS
solenoid
valve coil
<Four-way valve>
fixing screw
Lead wire of
high pressure switch
High pressure switch (63H)
Reactor fixing screw
Reactor fixing screws
Linear expansion
valve coil (LEV A)
Four-way valve
solenoid
valve coil
<Four-way valve>
(21S4)
Reactor
(DCL)
Electrical parts box