Section IX - Troubleshooting
Probable Causes:
Corrective Action:
Quincy Compressor-QSI
®
49
Unscheduled Shutdown:
H
IGH
DISCHARGE
AIR
TEMPERATURE
T
HERMAL
MOTOR
OVERLOAD
RELAYS
TRIPPING
P
OWER
FAILURE
F
AULTY
HAT
SENSORS
L
OOSE
WIRE
CONNECTIONS
F
AULTY
CONTROL
RELAY
Thermal Overload Relays Tripping:
E
XCESSIVE
DISCHARGE
PRESSURE
L
OW
VOLTAGE
L
OOSE
OVERLOAD
CONNECTION
I
NCORRECT
THERMAL
OVERLOAD
RELAY
SETTING
L
OOSE
MOTOR
OR
STARTER
WIRING
F
AULTY
MOTOR
C
ORRECT
THE
SITUATION
IN
ACCORDANCE
WITH
THE
INSTRUCTION
IN
THE
“H
IGH
D
ISCHARGE
A
IR
T
EMPERATURE
”
SECTION
OF
THIS
TROUBLESHOOTING
GUIDE
. R
ESTART
THE
COMPRESSOR
.
C
ORRECT
THE
CAUSE
OF
THE
MOTOR
OVERLOADED
CONDITION
,
RESET
THE
OVERLOAD
RELAY
AND
PRESS
THE
RESET
BUTTON
.
C
HECK
POWER
SUPPLY
AND
TRANSFORMER
FUSES
.
C
ONTACT
A
QUALIFIED
SERVICE
TECHNICIAN
FOR
REPAIRS
.
C
HECK
ALL
WIRING
TERMINALS
FOR
CONTACT
AND
TIGHTNESS
.
R
EPLACE
RELAY
.
L
OWER
FULL
LOAD
PRESSURE
SETTING
AT
CONTROL
PANEL
.
C
HECK
VOLTAGE
AND
AMPERAGES
WHILE
OPERATING
AT
FULL
LOAD
PRESSURE
.
T
IGHTEN
MOUNTING
SCREWS
ON
THERMAL
OVERLOAD
.
C
HECK
MOTOR
NAMEPLATE
AND
COMPARE
TO
OVERLOAD
RELAY
SETTING
.
C
HECK
ALL
CONNECTIONS
FOR
TIGHTNESS
.
C
HECK
MOTOR
STARTER
WIRING
BEFORE
REMOVING
MOTOR
. R
EMOVE
MOTOR
AND
HAVE
TESTED
AT
MOTOR
MANUFACTURER
REPAIR
CENTER
.
Summary of Contents for QSI 1000
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Page 11: ...Section I General Quincy Compressor QSI 5 MODEL IDENTIFICATION ...
Page 25: ...Quincy Compressor QSI 19 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 65: ...Quincy Compressor QSI 59 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 66: ...Appendix A Dimensional Drawings 60 Quincy Compressor QSI QSI 220 245 air cooled ...
Page 67: ...Appendix A Dimensional Drawings Quincy Compressor QSI 61 QSI 220 245 water cooled ...
Page 68: ...Appendix A Dimensional Drawings 62 Quincy Compressor QSI QSI 250 300 air cooled ...
Page 69: ...Appendix A Dimensional Drawings Quincy Compressor QSI 63 QSI 250 300 water cooled ...
Page 70: ...Appendix A Dimensional Drawings 64 Quincy Compressor QSI QSI 335 370 air cooled ...
Page 71: ...Appendix A Dimensional Drawings Quincy Compressor QSI 65 QSI 335 370 water cooled ...
Page 72: ...Appendix A Dimensional Drawings 66 Quincy Compressor QSI QSI 440 500 air cooled ...
Page 73: ...Appendix A Dimensional Drawings Quincy Compressor QSI 67 QSI 440 500 water cooled ...
Page 74: ...Appendix A Dimensional Drawings 68 Quincy Compressor QSI QSI 540 600 air cooled ...
Page 75: ...Appendix A Dimensional Drawings Quincy Compressor QSI 69 QSI 540 600 water cooled ...
Page 76: ...Appendix A Dimensional Drawings 70 Quincy Compressor QSI QSI 675 750 air cooled ...
Page 77: ...Appendix A Dimensional Drawings Quincy Compressor QSI 71 QSI 675 750 water cooled ...
Page 78: ...Appendix A Dimensional Drawings 72 Quincy Compressor QSI QSI 925 1000 air cooled ...
Page 79: ...Appendix A Dimensional Drawings Quincy Compressor QSI 73 QSI 925 1000 water cooled ...
Page 80: ...Appendix A Dimensional Drawings 74 Quincy Compressor QSI QSI 1175 1250 1400 1500 air cooled ...
Page 81: ...Appendix A Dimensional Drawings Quincy Compressor QSI 75 QSI 1175 1250 1400 1500 water cooled ...
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