Troubleshooting
SiBE811001EB
321
CONVENI-PACK
External equalizer pipe
Evaporator
Liquid trap
Minimize this distance
If the liquid trap is provided
before the piping rises, the
liquid refrigerant and
refrigerant oil will dwell in this
trap, thus enabling the feeler
bulb to operate without having
influence of the liquid.
Mounting position of feeler
bulb with rising suction pipe
Evaporator
Since no liquid refrigerant
dwells in the mounting position
of the feeler bulb, the
expansion valve properly
operates.
Showing the case where no trap part is
provided and no liquid and oil dwells in the
mounting position of the feeler bulb
External equalizer pipe
Evaporator
Short circuit
Improper
mounting
of feeler
bulb
Proper mounting of
feeler bulb
If the evaporator has 2 or more
paths and the feeler bulb is
mounted improperly, the valve
will only sense part of the
refrigerant.
Showing the case where the liquid short-circuits
(Proper mounting position of feeler bulb in order to prevent the liquid from returning)
Thermostatic
expansion
valve
Feeler
bulb
The position is
unacceptable.
Thermostatic
expansion
valve
Feeler
bulb