１３
■
Noise From Capillary Tube
Remarks:
When Refrigerant (R600a) flows in Capillary Tube, it will bring tube a slight vibration and make a very
small noise, it is normal phenomenon, except the following problems happened.
Problem
Possible Cause
Solutions
1. A hissing noise
sounds like
water-spraying.
1.Capillary Tube has sharp burrs around
opening edge.
1.Use a oxygen welding machine to heat
up Capillary Solder Joint, and remove
Capillary Tube from Evaporator. (
Figure.6
& Figure 9)
2. Use a small Mill File to smooth all burrs
around opening edge.
Caution: Do not allow any metal
particles dropped into
Capillary Tube.
2. Capillary Tube was inserted into
Evaporator too far.
1.Re-Insert Capillary Tube into Evaporator
with depth less than 15mm, Re-solder it
and wrap it with Shock-absorbing Clay .
2. Re-do vacuum extraction and re-charge
Refrigerant.
(Page 2
)
2. A loud noise sounds
like vibrating and
clicking.
Capillary touched Baffle Board and other
parts
1.Adjust position of Capillary to keep a
proper distance from Baffle Board or other
parts
2.Wrap tube with Shock-absorbing Clay.
3. A low and deep
noise sounds like
gurgling
The unit was not upright during moving,
loading/unloading, transportation,
compressor oil flowed into tube, which
caused tube jam.
1. Clean
tubes;
2. Re-do vacuum extraction
3. Re-charge
Refrigerant.
(Page 2)
Terminal
Screws
(2pcs)
１４
.
Capillary
Solder Joint
Discharge
(Low Pressure)
Solder Joint
Evaporator
T1
(
Temp.Sensor)
Discharge Tube
(Lower Pressure)
Solder Joint
Capillary
Solder Joint
