Diagnosing Start Components; Capacitor - Manitowoc SD0302A Technician's Handbook
S series;
s300 series;
s420 series;
s450 series;
s500 series;
s850 series;
s1000 series;
s1200 series;
s1400w series;
s1400a series;
s1400n series;
s1800w series;
s1800a series;
s1800n series
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Also See for SD0302A:
- Technician's handbook (301 pages) ,
- Service manual (168 pages) ,
- Installation, use & care manual (68 pages)
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DIAGNOSING START COMPONENTS
If the compressor attempts to start, or hums and trips
the overload protector, check the start components
before replacing the compressor.
Capacitor
Visual evidence of capacitor failure can include a
bulged terminal end or a ruptured membrane. Do not
assume a capacitor is good if no visual evidence is
present. A good test is to install a known good
substitute capacitor. Use a capacitor tester when
checking a suspect capacitor. Clip the bleed resistor
off the capacitor terminals before testing.
•
If the compressor attempts to start, or hums and
trips the overload protector, check the starting
components before replacing the compressor.
•
Visual evidence of capacitor failure can include a
bulged terminal end or a ruptured membrane. Do
not assume a capacitor is good if no visual
evidence is present.
•
A good test is to install a known good substitute
capacitor.
•
Use a capacitor tester when checking a suspect
capacitor. Clip the bleed resistor off the capacitor
terminals before testing.
154
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Troubleshooting
