Section 7
MAINTENANCE
31
7.1 MAINTENANCE INTRODUCTION
The Supervisor Controller monitors the status of
the air filter, fluid filter, and separator elements.
When maintenance to these devices is required,
the Supervisor will display the appropriate mainte-
nance message and flash the location LED on the
graphics map as a visual reminder.
DO NOT remove caps, plugs, and/or other compo-
nents when compressor is running or pressur-
ized.
Stop compressor and relieve all internal pressure
before doing so.
7.2 DAILY OPERATION
Following a routine start, observe the various
Supervisor Controller 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 expected modes of operation (i.e.
full load, no-load, different line pressures, cooling
water temperatures, etc.).
During the initial start-up or servicing of the pack-
age, fluid may have to be added to the sump ves-
sel to restore an adequate level. Frequent fluid
additions to maintain said level would be indicative
of excessive fluid consumption, and should be
investigated - see the Troubleshooting Section of
this manual for probable cause and remedy.
7.3 MAINTENANCE AFTER INITIAL 50 HOURS OF
OPERATION
After the initial 50 hours of operation, a few mainte-
nance requirements are needed to rid the system of
any foreign materials which may have accumulated
during compressor assembly. Perform the following
maintenance operations to prevent unnecessary
problems.
1. Clean the return line strainers.
2. Clean the return line orifices.
3. Change the fluid filter elements.
4. Clean the control line filters.
7.4 MAINTENANCE AS REQUIRED BY LUBRICA-
TION GUIDE (SECTION 3)
1. Drain the sump and change the compressor fluid.
2. Replace the main fluid filter element.
3. Clean the return line strainers and orifices.
4. Clean or replace the control line filter element.
7.5 FLUID CHANGE
Standard models are filled with LLL-4-46 fluid. LLL-
4-46 fluid should be changed under the following
conditions, whichever occur first:
1. Every 1200-1400 hours.
2. As indicated by fluid analysis.
A fluid sample at every 400-500 hours is recom-
mended. For a free LLL-4-46 fluid analysis, send
fluid sample to:
Engineering Services, Inc.
Attn: Lubricant Lab
2300 James Savage Road
Midland, MI 48642 U.S.A.
To facilitate this, a sample bottle is included with the
compressor.
7.5.1 FLUID CONTAMINATION BASED UPON FLUID
ANALYSIS
Under certain conditions fluid may become contam-
inated. While this may indicate a fluid change,
attention must be taken to the potential remaining
fluid left inside the system after a change out.
When performing a fluid change, there is a possi-
bility that fluid may be retained in the oil cooler.
There may also be fluid in the unit, the discharge
valve and piping. If this fluid is not removed
before introducing fresh fluid (as per fluid change
out), the fresh fluid may become contaminated.
7.6 SEPARATOR MAINTENANCE INTRODUCTION
in Section 7.7.
Replace the separator elements when the separa-
tor maintenance message is displayed or after one
(1) year, whichever comes first. The separator ele-
ments must be replaced.
DO NOT
clean the sepa-
rator elements.
A continuity check is critical to perform when
replacing separator elements.
7.7 PARTS REPLACEMENT AND ADJUSTMENT
PROCEDURES
FLUID FILTER MAINTENANCE
. The fluid filter (P/N 02250111-
592) is located schematically between the thermal
valve on the sump and the oil stop valve on the
compressor-mounting bracket. When servicing this
filter, shut the compressor down, make sure all
pressure has been released, then follow the
instructions below. For element replacement order
kit number 250031-850.
To minimize the possibility of filter element rup-
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...