Kubota B1830 - Air Conditioner Unit; Expansion Valve

CABIN
B1830,B2230,B2530,B3030, WSM
10-M16
[4] AIR CONDITIONER UNIT
The air conditioner unit (1) consists of evaporator (3),
expansion valve (2), heater core (4), blower (5), etc..
9Y1210003CAM0019US0
(1) Expansion Valve
The expansion valve restricts the flow of liquid
refrigerant and delivers sprayed refrigerant to the
evaporator to facilitate refrigerant evaporation.
The cabin interior will not be cooled sufficiently if the
expansion valve outlet is too small. If it is too wide, frost
will be produced on the evaporator, decreasing cooling
efficiency. Thus the size of this small spray hole has to
be controlled according to various conditions.
9Y1210003CAM0020US0
(1) Air Conditioner Unit
(2) Expansion Valve
(3) Evaporator
(4) Heater Core
(5) Blower
(1) Pipe
(2) Expansion Valve
(3) Evaporator
(4) Diaphragm Chamber
(5) Diaphragm
(6) Needle Valve
(7) Adjusting Screw
(8) Pressure Spring
(9) Tube
(10) Heat Sensitive Tube
(11) Capillary Tube
a: From Receiver
b: To Evaporator
c: From Evaporator
KiSC issued 05, 2012 A