Section 8
TROUBLESHOOTING
38
COMPRESSOR SHUTS DOWN
(CONTINUED)
COMPRESSOR WILL NOT
BUILD UP FULL DISCHARGE
PRESSURE
LINE PRESSURE RISES
ABOVE P2 PRESSURE
EXCESSIVE COMPRESSOR
LUBRICANT CONSUMPTION
High Discharge Temperature (Cont.)
Low Fluid Pressure
Low Water Pressure
Air Demand is Too Great
Dirty Air Filter
Defective Pilot Pressure Regulator
Defective Minimum Pressure Valve
Defective Control Inlet Solenoid
Valve
Leak in Control System Causing Loss
of Pressure Signals
Defective Blowdown Solenoid Valve
Defective Blowdown Valve
Clogged Return Line or Orifice
Separator Elements Damaged or Not
Functioning Properly
Cooler plugged; clean tubes. If plugging per-
sists, install water conditioner. (water-cooled).
Low fluid level; add fluid.
Clogged filter; change the fluid filter element
if maintenance indicator shows red, and/or
dP2 on controller indicates high dP.
Thermal valve not functioning properly;
replace element.
Cooling air flow restricted; clean cooler and
check for proper ventilation (air-cooled).
Ambient temperature too high; provide suffi-
cient ventilation (air-cooled).
RTD probe out of calibration, or bad RTD.
Replace if necessary.
Clogged filter; replace fluid filter element
Check water lines and valves (water-cooled).
Check service lines for leaks or open valves.
Check the filter indicator and change or clean
element if required.
Check diaphragm and replace if necessary
(kit available).
Check that the piston is moving freely.
Repair or replace.
Check for leaks.
Repair or replace if necessary (kit available).
Check that sump pressure is exhausted to
the atmosphere when the unload pressure
setting on Supervisor is met, or repair or
replace if necessary (kit available).
Clean strainer (screen and o-ring replace-
ment kit available).
Clean orifice.
Change separator elements.
8.2 TROUBLESHOOTING GUIDE(CONTINUED)
SYMPTOM
PROBABLE CAUSE
REMEDY
Summary of Contents for LS-20T
Page 6: ......
Page 20: ...Section 2 DESCRIPTION 14 Figure 2 4A Control System Diagram Functional Components...
Page 21: ...Section 2 DESCRIPTION 15 Figure 2 4B Control System Diagram START...
Page 22: ...Section 2 DESCRIPTION 16 Figure 2 4C Control System Diagram MODULATION...
Page 23: ...Section 2 DESCRIPTION 17 Figure 2 4D Control System Diagram FULL LOAD...
Page 24: ...Section 2 DESCRIPTION 18 Figure 2 4E Control System Diagram UNLOAD...
Page 26: ...NOTES 20...
Page 30: ...NOTES 24...
Page 34: ...NOTES 28...
Page 42: ...NOTES 36...
Page 46: ...NOTES 40...
Page 49: ...NOTES 43...
Page 50: ...Section 9 ILLUSTRATIONS AND PARTS LIST 44 02250137 909R00 9 3 MOTOR FRAME COMPRESSOR AND PARTS...
Page 52: ...Section 9 ILLUSTRATIONS AND PARTS LIST 46 02250137 907R03 9 4 AIR INLET SYSTEM...
Page 54: ...Section 9 ILLUSTRATIONS AND PARTS LIST 48 02250137 907R03 9 4 AIR INLET SYSTEM...
Page 56: ...Section 9 ILLUSTRATIONS AND PARTS LIST 50 02250138 702R00 9 5 AIR INLET SUB ASSEMBLY...
Page 58: ...Section 9 ILLUSTRATIONS AND PARTS LIST 52 02250137 908R00 9 6 WATER COOLING SYSTEM...
Page 60: ...Section 9 ILLUSTRATIONS AND PARTS LIST 54 02250137 910R01 9 7 AIR PIPING SYTEM...
Page 62: ...Section 9 ILLUSTRATIONS AND PARTS LIST 56 02250137 912R01 9 8 FLUID PIPING SYSTEM...
Page 64: ...Section 9 ILLUSTRATIONS AND PARTS LIST 58 02250139 798R00 9 9 WATER PIPING SYSTEM...
Page 66: ...Section 9 ILLUSTRATIONS AND PARTS LIST 60 02250137 911R01 9 10 DISCHARGE SYSTEM...
Page 68: ...Section 9 ILLUSTRATIONS AND PARTS LIST 62 02250137 911R01 9 10 DISCHARGE SYSTEM...
Page 70: ...Section 9 ILLUSTRATIONS AND PARTS LIST 64 02250137 911R01 9 10 DISCHARGE SYSTEM...
Page 72: ...Section 9 ILLUSTRATIONS AND PARTS LIST 66 02250137 914R02 9 11 CONTROL START SYSTEM...
Page 74: ...Section 9 ILLUSTRATIONS AND PARTS LIST 68 02250137 914R02 9 11 CONTROL START SYSTEM...
Page 76: ...Section 9 ILLUSTRATIONS AND PARTS LIST 70 9 12 CONTROL PANEL 02250138 633R00...
Page 78: ...Section 9 ILLUSTRATIONS AND PARTS LIST 72 9 13 ENCLOSURE 02250138 672R00...
Page 80: ...Section 9 ILLUSTRATIONS AND PARTS LIST 74 9 13 ENCLOSURE 02250138 672R00...
Page 82: ...Section 9 ILLUSTRATIONS AND PARTS LIST 76 9 14 DECAL GROUP...
Page 84: ...Section 9 ILLUSTRATIONS AND PARTS LIST 78 9 14 DECAL GROUP...
Page 86: ...Section 9 ILLUSTRATIONS AND PARTS LIST 80 9 14 DECAL GROUP...
Page 88: ...Section 9 ILLUSTRATIONS AND PARTS LIST 82 9 15 DECAL LOCATION OPEN MODEL...
Page 90: ...Section 9 ILLUSTRATIONS AND PARTS LIST 84 9 16 DECAL LOCATION ENCLOSED MODEL...
Page 92: ...Section 9 ILLUSTRATIONS AND PARTS LIST 86 9 17 DECAL LOCATION CONTROL BOX...
Page 94: ...Section 9 ILLUSTRATIONS AND PARTS LIST 88 9 18 WIRING DIAGRAM LS20T 525 PSIG 02250137 917R01...
Page 95: ...NOTES 89...