Section VII - Troubleshooting
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
Low Air Delivery:
P
LUGGED
AIR
INTAKE
FILTER
ELEMENT
E
XCESSIVE
LEAKS
IN
THE
SERVICE
LINES
I
NLET
VALVE
NOT
FULLY
OPEN
R
ESTRICTED
FLUID
FLOW
Low Receiver Pressure:
E
XCESSIVE
AIR
DEMAND
E
XCESSIVE
LEAKS
IN
THE
SERVICE
LINES
I
NLET
VALVE
NOT
FULLY
OPEN
P
LUGGED
AIR
INTAKE
FILTER
D
IFFERENTIAL
PILOT
VALVE
NOT
SET
CORRECTLY
A
IR
PRESSURE
SETTING
NOT
SET
CORRECTLY
F
AULTY
RECEIVER
PRESSURE
GAUGE
OR
SENSOR
High Receiver Pressure:
A
IR
PRESSURE
SETTING
NOT
SET
CORRECTLY
I
NLET
VALVE
NOT
CLOSING
AT
LOWER
AIR
DEMAND
B
LOWDOWN
VALVE
NOT
RELIEVING
RECEIVER
PRESSURE
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
.
C
LEAN
AIR
FILTER
ELEMENT
OR
REPLACE
WITH
NEW
ELEMENT
.
C
HECK
SERVICE
LINES
FOR
LEAKS
WITH
SOAP
SUDS
. R
EPAIR
AS
NECESSARY
.
C
HECK
FOR
BUILD
UP
OR
GUMMING OF
SHAFT
.
C
HECK
FLUID
FILTER
FOR
PLUGGING
.
R
EEVALUATE
AIR
DEMAND
. I
NSTALL
ADDITIONAL
COMPRESSORS
AS
NEEDED
.
C
HECK
SERVICE
LINES
FOR
LEAKS
WITH
SOAP
SUDS
. R
EPAIR
AS
NECESSARY
.
C
ORRECT
IN
ACCORDANCE
WITH
THE
INSTRUCTIONS
IN
“I
NLET
VALVE
NOT
OPENING
OR
CLOSING
IN
RELATION
TO
AIR
DEMAND
”
SECTION
OF
TROUBLESHOOTING
GUIDE
.
R
EPLACE
AIR
FILTER
ELEMENT
.
A
DJUST
DIFFERENTIAL
PILOT
VALVE
TO
ACHIEVE
DESIRED
MODULATION
RANGE
.
A
DJUST
AIR
PRESSURE
SWITCH
TO
ACHIEVE
DESIRED
CUT
-
IN
AND
CUT
-
OUT
PRESSURE
.
C
HECK
AND
REPLACE
AS
NECESSARY
.
A
DJUST
AIR
PRESSURE
SETTING
TO
ACHIEVE
DESIRED
CUT
-
IN
AND
CUT
-
OUT
PRESSURE
. E
NSURE
UNLOAD
PRESSURE
DOES
NOT
EXCEED
MAXIMUM
OPERATING
PRESSURE
.
C
ORRECT
IN
ACCORDANCE
WITH
INSTRUCTION
ON
“I
NLET
V
ALVE
NOT
OPENING
OR
CLOSING
IN
RELATION
TO
AIR
DEMAND
”
SECTION
OF
THIS
TROUBLESHOOTING
GUIDE
.
C
HECK
CONTROL
SOLENOID
AND
BLOWDOWN
VALVE
.
61
Содержание QSI-90
Страница 2: ......
Страница 70: ...Appendix A Dimensional Drawings QSI 90 120 140 micro 66...
Страница 71: ...Appendix A Dimensional Drawings QSI 90 120 140 micro dry 67...
Страница 72: ...Appendix A Dimensional Drawings QSI 90 120 140 micro tank mounted 68...
Страница 73: ...Appendix A Dimensional Drawings QSI 90 120 140 micro dry tank mounted 69...
Страница 74: ...Appendix A Dimensional Drawings QSI 90 120 140 guage 70...
Страница 75: ...Appendix A Dimensional Drawings QSI 90 120 140 guage dry 71...
Страница 76: ...Appendix A Dimensional Drawings QSI 90 120 140 guage tank mounted 72...
Страница 77: ...Appendix A Dimensional Drawings QSI 90 120 140 guage dry tank mounted 73...
Страница 78: ...Appendix A Dimensional Drawings QGV 20 25 30 460V 74...
Страница 79: ...Appendix A Dimensional Drawings QGV 20 25 30 460V dry 75...
Страница 80: ...Appendix A Dimensional Drawings QGV 20 25 30 460V tank mounted 76...
Страница 81: ...Appendix A Dimensional Drawings QGV 20 25 30 460V dry tank mounted 77...
Страница 91: ......