Component Testing; Check Capillary Tube - Friedrich Chill Premier Inverter Series Service Manual

Check Capillary Tube

BURN HAZARD
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with a torch.
Failure to follow these procedures could
result in moderate or serious injury.
Test the Capillary Tube and Check Valve Assy
1. Check the capillary tube temperature by hand where the refrigerant enters the capillary tube. A partial restriction of the
capillary tube will be indicated by frost or freezing in that area.
2. If the capillary tube is fully restricted, then pressure will increase and pressure switch will open if installed. If no pressure
switch is installed, the unit will shut down due to the compressor overload opening. High discharge temperature will be present
at the compressor.
Arrows Indicate Direction of Flow
49

COMPONENT TESTING

WARNING
Accumulator
Indoor
Coil
(Evaporator)
Cap Tube (Cooling Only)
Figure 501 (Cooling Only Refigerant Flow)
Be careful with the sharp edges and corners.
Wear protective clothing and gloves, etc.
Failure to do so could result in serious injury.
Compressor
WARNING
CUT/SEVER HAZARD
Outdoor Coil
(Condensor)