![background image](http://html1.mh-extra.com/html/gardner-denver/auto-sentry-eau99g/auto-sentry-eau99g_operating-and-service-manual_3581467072.webp)
13-10-614 Page 65
SYMPTOM
POSSIBLE CAUSE
REMEDY
Compressor starts too
slowly
1.
Wye Delta switch time set
too long.
1.
Contact your Gardner
Denver distributor.
2.
Minimum Pressure/Check
Valve is faulty.
2.
Repair or replace.
3.
Supply voltage is too low.
3.
Check the supply voltage.
Compressor is low on
delivery and pressure
1.
Restricted air filter.
1.
Clean or replace filter.
2.
Sticking inlet valve.
2.
Inspect and clean inlet
valve.
3.
Minimum pressure valve
stuck closed.
3.
Replace valve.
4.
Leaks in the compressed
air system.
4.
Check for leaks, fix any
leaks found.
5.
Aftercooler is frozen
5.
Thaw out. This machine
cannot operate in
temperatures below 32
°
F
(0
°
C).
6.
Unload pressure adjusted
too low.
6.
Adjust the unload
pressure. See Manual
13-9-653.
Excessive oil
consumption
1.
Oil carryover through
lines.
1.
See “Oil Carryover”, in this
section.
2.
Oil leaks at all fittings and
gaskets.
2.
Tighten or replace fittings
or gaskets.
3.
Shaft seal leaking.
3.
Replace shaft seal.
High discharge air
temperature
1.
Thermostatic mixing valve
stuck open.
1.
Repair or replace valve.
2.
Dirty or clogged cooler
face.
2.
Clean cooler.
3.
Insufficient cooling air flow
3.
Provide unrestricted
supply of cooling air.
4.
Clogged oil filter or cooler
(interior)
4.
Replace filter or clear
cooler.
5.
Low compressor oil.
5.
Add oil to proper level.
Summary of Contents for AUTO SENTRY EAU99G
Page 11: ...13 10 614 Page 4 Figure 1 4 PACKAGE DRIVE MOTOR AIR FILTER 201EAU797 Ref Drawing...
Page 14: ...13 10 614 Page 7 DECALS 206EAQ077 212EAQ077 218EAQ077 211EAQ077 207EAQ077...
Page 15: ...13 10 614 Page 8 DECALS 216EAQ077 217EAQ077 222EAQ077 221EAQ077 208EAQ077...
Page 37: ...13 10 614 Page 30 Figure 4 7 CONTROL SCHEMATIC COMPRESSOR AT FULL LOAD 206EAU797 A Ref Drawing...
Page 41: ...13 10 614 Page 34 202EAU546 D Ref Drawing Page 2 of 2...
Page 43: ...13 10 614 Page 36 205EAU546 D Ref Drawing Page 2 of 2...
Page 47: ...13 10 614 Page 40 Figure 5 3 FLOW DIAGRAM 210EAU797 A Ref Drawing...