Sullair LS-25 Operator's Manual And Parts List page 56

Section 7
MAINTENANCE
7.8 TROUBLESHOOTING GUIDE- SUPERVISOR (CONTINUED)
SYMPTOM
HI P1, HI P2 MESSAGE
T1 HI MESSAGE
P1 HI MESSAGE
SEP MNTN MESSAGE
50
PROBABLE CAUSE
Discharge Pressure Exceeded Shutdown
Level Because:
Unloading Device (i.e., Blowdown Valve,
Sullicon Actuator, Optional Spiral Valve)
Failed to Operate
Pressure Regulator Maladjusted
Solenoid Valve Failed to Operate
Control Air Signal Leaks
Control Air Signal Filter Clogged
Discharge Temperature Exceeded 225°F
(107°C) for Pre-Alarm
Discharge Temperature Exceeded 235°F
(113°C) for Shutdown
Ambient Temperature Exceeded 105°F
(41°C)
Fluid Level in Sump is Too Low
Thermal Valve Malfunctioned
Cooler Fins are Dirty
Water Flow is Low (water-cooled pack-
ages only)
Water Temperature is High (water-cooled
packages only)
Cooler is Plugged (water-cooled pack-
ages only)
Temperature RTD Malfunction
P1 MAX - 3psi (0.2 bar) Exceeded for
Pre-Alarm
P1 MAX Exceeded for Shutdown
Discharge Pressure Exceeded Shutdown
Level Because:
Unloading Device (i.e., Blowdown Valve,
Sullicon Actuator, Optional Spiral Valve)
Failed to Operate
Pressure Regulator Maladjusted
Solenoid Valve Failed to Operate
Control Air Signal Leaks
Control Air Signal Filter Clogged
Plugged Separator
REMEDY
Check operation of unloading device. See Section
7.5.
Check operation of pressure regulator. See
Section 7.5.
Check operation of solenoid valve. See Section
7.5.
Check tubework feeding control signal for leaks.
Service filter assembly. See Section 7.5.
Improve local ventilation (i.e., remote intake of
process and/or cooling air.
Check/correct fluid level.
Check/replace thermal valve.
Clean cooler fins.
Check cooling water supply (i.e., closed valves).
Increase water flow, lower water temperature.
Clean tubes and/or shell - if tube plugging persists,
provide cleaner water.
Check connections from RTD. If adequate, re-
place RTD.
Check operation of unloading device.
Check operation of pressure regulator.
Check operation of solenoid valve.
Check tubework feeding control signal for leaks.
Service filter assembly.
Replace separator elements.