Daily Operation; Troubleshooting Introduction; Troubleshooting Guide - Sullair LS-20T Operator's Manual

Section 6
SUPERVISOR II DESCRIPTION

6.10 DAILY OPERATION

Following a routine start, observe the various Su-
pervisor displays to check that normal readings are
being made --- previous records are very helpful in
determining the normalcy of the measurements.
These observations should be made during all ex-
pected modes of operation (i.e. full load, no---load,
different line pressures, cooling water tempera-
tures, etc.).
During the initial start---up or servicing of the pack-
age, fluid may have to be added to the sump vessel
to restore an adequate level. Frequent fluid addi-
tions to maintain said level would be indicative of
excessive fluid consumption, and should be inves-
tigated --- see the Troubleshooting Section of this
manual for probable cause and remedy.

6.11 TROUBLESHOOTING INTRODUCTION

The following information has been compiled from
operational experience with your package. It identi-

6.12 TROUBLESHOOTING GUIDE

SYMPTOM
T1 HI, T2 HI Message
P1 HI Message
P1 HI Message
(Continued)
24
PROBABLE CAUSE
Discharge Temperature Exceeded
255˚ F (124˚ C) for Pre---Alarm
Discharge Temperature Exceeded
265˚ F (129˚ 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
packages only)
Water Temperature is High (water---
cooled packages only)
Cooler is Plugged (water---cooled
packages only)
Temperature RTD Malfunction
P1 MAX --- 3 psi (.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
fies symptoms and diagnosis of SEVERAL prob-
able difficulties, but NOT ALL of those possible.
The systematic collection of operational data can-
not be over---emphasized, as it may give evidence
of the presence (or not) of a fault before it turns into
a serious breakdown --- for example, the vibrations
signature increase of a damaged bearing, or the ef-
ficiency decrease of a dirty heat exchanger.
A detailed visual inspection is worth performing for
almost all problems and may avoid unnecessary
additional damage to the compressor. Always re-
member to:
1. Check for loose wiring.
2. Check for damaged piping.
3. Check for parts damaged by heat or an electrical
short circuit, usually apparent by discoloration
or a burnt odor.
Should your problem persist after making the rec-
ommended check, consult your nearest Sullair
representative or the Sullair Corporation.
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, replace RTD.
Check operation of unloading device
.
Check operation of pressure regulator.
Check operation of solenoid valve
Check tube work feeding control
signal for leaks
Service filter assembly
REMEDY