Removing The High Pressure Switch; Removing The Low Pressure Switch; Removing The Linear Expansion Valve - Mitsubishi Electric Mr.Slim PUH-P25VGAA Service Manual

OPERATING PROCEDURE

9. Removing the high pressure switch

(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical box. (See Photo 3)
(4) Disconnect the lead wire of the pressure switch.
(See Photo 6)
(5) Remove the braze part of the pressure switch.
Note : When installing the pressure switch, cover the pressure
switch with a wet cloth to prevent the pressure switch
from heating, then braze it.

10. Removing the low pressure switch

(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical box. (See Photo 3)
(4) Disconnect the lead wire of the pressure switch.
(See Photo 7)
(5) Remove the braze part of the pressure switch.
Note : When installing the pressure switch, cover the pressure
switch with a wet cloth to prevent the pressure switch
from heating, then braze it.

11. Removing the linear expansion valve

(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical box. (See Photo 3)
(4) Recover gas from the refrigerant circuit.
(5) Remove the linear expansion valve coil. (See Photo 8)
(6) Remove the braze pipes of the linear expansion valve.
Note 1: When installing the linear expansion valve, remove
its coil and cover the valve with a wet cloth so as to
prevent it from heating, then braze the pipes.
Note 2: By detaching the rear panel, the brazed parts will
easily become separated.
Note 3:
Before using a burner, reclaim gas from the pipes until the
pressure gauge shows 0 kg/cm
Use the burner under the condition that gas can be recovered
even when the inner pressure rises by heat.
2 (0 MPa).
73
PHOTOS
Photo 6
Lead wire
Photo 7
Electrical box
Photo 8
Accumulator
Capillary
tube
Pressure
switch
<High>
Valve
bed
fixing
screws
Lead wire
Pressure
switch
<Low>
Bypass valve
solenoid coil
Bypass
valve
Linear
expansion
valve coil
Linear
expansion
valve