3.8 Restricted Capillary Tube
Moisture and other contaminants that enter the system can cause deposits in the system. These deposits
will usually collect in the capillary tube and form a restriction that can not be completely removed by
flushing. If the capillary tube is restricted the filter / drier, capillary tube, evaporator, and suction line as-
sembly should be replaced.
3.9 Access Valves
A temporary access valve can be used to diagnosis and service the system. To access the low side of the
system, install the access valve on the process tube at the compressor. Do not install the access valve
near the base of the compressor leave some room on the process tube in case the unit has to be serviced
again. Before piercing the process tube, install the low side hose from your manifold gage to the access
valve. Once the valve has been pierced, slightly crack the hose fitting at the manifold long enough to
bleed the air from line. When service has been completed the access valve should be removed. This will
prevent future leaking as these valves are not guaranteed leak proof. To remove the valve, use a pinch
off tool to close the process tube between the valve and the compressor. With the pinch off tool in place,
remove the valve and solder the pierced hole shut. At this time remove the pinch off tool and check for
leaks with the system off.
17
2010 - Viking Preferred Service
SMR-0005
Summary of Contents for DFUW244CL
Page 6: ...Section 1 Introduction to Dual Zone 2010 Viking Preferred Service SMR 0005 ...
Page 10: ...Section 2 Dual Zone Characteristics 2010 Viking Preferred Service SMR 0005 ...
Page 16: ...Section 3 Refrigeration Systems 2010 Viking Preferred Service SMR 0005 ...
Page 27: ...Section 4 TruProtect Control Diagnostics 2010 Viking Preferred Service SMR 0005 ...
Page 30: ...Section 5 Mechanical System Components 2010 Viking Preferred Service SMR 0005 ...
Page 38: ...Section 6 Structural Components 2010 Viking Preferred Service SMR 0005 ...
Page 42: ...Section 7 Electrical Components 2010 Viking Preferred Service SMR 0005 ...
Page 50: ...Section 8 Control Components 2010 Viking Preferred Service SMR 0005 ...
Page 54: ...Section 9 Wiring 2010 Viking Preferred Service SMR 0005 ...
Page 57: ...52 J110 J111 J112 J2 J1 J4 J7 J3 9 3 Main Power Board 2010 Viking Preferred Service SMR 0005 ...
Page 58: ...9 4 User Interface 53 2010 Viking Preferred Service SMR 0005 ...
Page 59: ...Section 10 Reference Charts 2010 Viking Preferred Service SMR 0005 ...
Page 64: ...Section 11 Trouble Shooting Guide 2010 Viking Preferred Service SMR 0005 ...
Page 68: ...Section 12 Reference Photos 2010 Viking Preferred Service SMR 0005 ...
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