Receiver - Kubota KX080-4 Workshop Manual

KX080-4, WSM

[6] RECEIVER

The receiver is composed of a receiver tank, dryer,
strainer and a receiver tube.
[Receiver Tank]
In the AC system, the rpm of the compressor
changes in response to changes in the engine rpm, so
the appropriate amount of refrigerant in the cooling
circuit also changes. The receiver tank is the part that
reacts to those changes; when a lot of refrigerant is not
required in the cooling circuit, excess refrigerant is
stored temporarily in the tank and when more coolant is
needed, it is supplied to the circuit via the receiver tube.
It also acts to store the balance of refrigerant
charges and for extra refrigerant to counteract the leak
of small amounts of refrigerant, such as via permeation
of rubber hoses.
[Dryer]
If any moisture exists in the cooling circuit, it
damages the system by deteriorating the valves of the
compressor, its oil, by corroding metal parts in the circuit,
and/or freezes in the expansion valve and blocks the
circuit. The AC system uses synthetic zeolite as a dryer
that is compatible with the circuit, and it absorbs any
moisture that gets mixed into the circuit during
installation or charging of refrigerant.
If the expansion valve freezes up frequently due to
moisture (icing), it means the dryer has lost its ability to
absorb it, so the receiver has to be replaced.
[Strainer]
If dirt gets into the cooling circuit, it blocks the
expansion valve, damages the compressor and
otherwise hampers its cooling function. The strainer
works to prevent any dirt flowing in the refrigerant from
going any further. The strainer cannot be cleaned, so
when it becomes severely clogged up, (in which case the
high pressure gets high, low pressure gets low), the
receiver has to be changed.
[Sight Glass]
The sight glass is mounted at the receiver joint on
top of the receiver and it is the only place in the circuit
where the amount of refrigerant can be visually
inspected.
(1) Dryer
(2) Receiver Tube
(3) Strainer
(4) Receiver Tank
5-M12
CABIN
(A) Refrigerant Inlet
(B) Refrigerant Outlet
RY9212001CAM0019US0
KiSC issued 08, 2015 A