Section Ix - Troubleshooting; Troubleshooting - Quincy Compressor QSI Series Instruction Manual

Section IX - Troubleshooting

Probable Causes:
Failure to Start:
P "ON"
OWER NOT TURNED
B
LOWN CONTROL CIRCUIT FUSE
S
AFETY CIRCUIT SHUTDOWN RESULTING FROM HIGH
DISCHARGE AIR TEMPERATURE
T
HERMAL OVERLOAD RELAYS TRIPPING
L
OW VOLTAGE
F
AULTY START SWITCH
P
OWER FAILURE
F
AULTY CONTROL RELAY
L
OOSE WIRE CONNECTIONS
F H A T
AULTY IGH IR EMPERATURE
F
AULTY TRANSFORMER
48
Corrective Action:
T
URN THE POWER
DISCONNECT SWITCH OR CIRCUIT BREAKER
R
EPLACE FUSE
C
ORRECT THE SITUATION IN ACCORDANCE WITH THE
INSTRUCTION IN THE
T
EMPERATURE
GUIDE
C
ORRECT THE CAUSE OF THE OVERLOADED
CONDITION
START BUTTON
A
SK THE POWER COMPANY TO MAKE A VOLTAGE
CHECK AT YOUR ENTRANCE METER
THAT READING TO A READING TAKEN AT THE MOTOR
TERMINALS
FOR LOCATING THE SOURCE OF LOW VOLTAGE
C
HECK THE SWITCH FOR MALFUNCTION OR LOOSE
CONNECTIONS
C
HECK POWER SUPPLY TO THE UNIT
R
EPLACE THE RELAY
C
HECK ALL WIRING TERMINALS FOR CONTACT AND
TIGHTNESS
S C
WITCH HECK
SERVICE TECHNICIAN FOR REPAIRS
C
HECK SECONDARY VOLTAGE ON TRANSFORMER
Quincy Compressor-QSI
"ON"
BY CLOSING THE MAIN
. F
IND AND CORRECT CAUSE
"H D
IGH
"
SECTION OF THIS TROUBLESHOOTING
. R
ESTART THE COMPRESSOR
,
RESET OVERLOAD RELAY AND PRESS THE
.
. U
SE THESE TWO READINGS AS A BASIS
.
.
.
H A T . C
SWITCH ONTACT A QUALIFIED
®
.
.
A
ISCHARGE IR
.
,
THEN COMPARE
.
.
.
.