Table of Contents
Advertisement
Section 8
TROUBLESHOOTING
8.2 TROUBLESHOOTING GUIDE
SYMPTOM/MESSAGE
LO P3 SD (CONT.)
HI T1 SD
HI T2 SD
HI P1 SD
HI T3 SD
HI T4 SD
38
PROBABLE CAUSE
Sump Strainer Clogged
Oil Bypass Valve Setting Changed
Compressor Inlet Air Temperature Above
115°F (46°C)
High Interstage Pressure (Loaded)
High Interstage Pressure (Unloaded)
Temperature Transducer Failure
RTD Transmitter Problem
Blowdown Valve Failed to Open or
Operated Sluggishly During Unload
Intercooler Core Fouled
Discharge Check Valve Leaking During
Unloaded Operation
Inlet Throttling Valve Not Fully Open
During Loaded Operation
Inlet Air Filter Clogged
Line Pressure is Too High
Temperature Transducer Failure
RTD Transmitter Problem
Blowdown Valve Failed to Open or
Operated Sluggishly
Low Fan Speed
Defective HP Stage
Pressure Transducer Failure
Temperature Transducer Failure
RTD Transmitter Problem
Oil Cooler Fouled
Low Fan Speed
Temperature Transducer Failure
RTD Transmitter Problem
Intercooler Core Fouled
REMEDY
Refer to Section 7.9.6
for oil sump strainer
maintenance.
Reset valve.
Maintain inlet air temperature below 115°F
(46°C).
Defective HP stage.
Clogged blowdown silencer. Clean/replace.
Check connections from transducer. If ade-
quate, replace transducer.
Check transmitter output is 4-20 MA.
Refer to Section 7.9.7
for blowdown valve
maintenance.
Clean finning.
Refer to compressor's Operators Manual for
check valve maintenance.
See inlet valve adjustment.
Low oil pressure defective control solenoid
valve.
See
Section 7.9.1
for air filter maintenance.
Reset Supervisor unload pressure.
Check connection from transducer. If adequate,
replace transducer.
Check transmitter output is 4-20 MA.
Refer to
Section 7.9.7
for blowdown valve
maintenance.
Re-tension fan belt or replace if damaged.
Consult Sullair Service
Department.
Check connection from transducer. If ade-
quate, replace transducer.
Check connections from transducer. If ade-
quate, replace transducer.
Check transmitter output is 4-20 MA.
Clean fins.
Re-tension fan belt or replace if necessary.
Check connections from transducer. If ade-
quate, replace transducer.
Check transmitter output is 4-20 MA.
Clean fins.
Advertisement
Table of Contents
