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 TABLE l-2. Troubleshooting Chart (Continued)
Problem
Possible Cause
Remedy
Air receiver
Unloader or control defective.
Repair or replace
pressure above
defective parts.
normal
Unloader setting wrong.
Correct unloader setting.
Stop leaks.
Leaks in control air piping.
Control air line clogged.
Unclog control air lines.
Valves worn or broken.
Replace valves.
Intercooler
pressure above
Valves not seated or
Reseat or relocate valves.
normal
incorrectly located.
Unloader setting wrong.
Correct unloader setting.
Clean intercooler.
Intercooler passages clogged.
Increase water supply.
Insufficient water.
Intercooler
System demand exceeds rating.
Upgrade compressor.
pressure below
normal
Stop leakage.
System leakage excessive.
Clean or replace air
Intake filter clogged.
filter as applicable.
Replace worn or broken
Valves worn or broken.
valves.
Correct unloader setting.
Unloader setting wrong.
Air in receiver
Moisture separator not
Unclog or repair separator
too moist
draining.
drain.
Air coolers ineffective.
Check temperature of
cooler at discharge port.
Inadequate cooling waterflow
Check cooling waterflow
rate.
pressure.
1-11
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