KIMA00H1 (0204)
21
4. OPERATING INSTRUCTIONS
4.1
a. Open system air valve (external of the compressor cabinet).
Starting the
Compressor
b. Turn on power to the unit. Confirm GT Terminal operation. Check
that all temperatures read normal. Indicators at the top of the
temperature and pressure pages will show running or stopped
messages for motor operations.
c. Press the Start button. The lube oil pump will start. Check oil
pressure. The
RUN
light will turn on. The GT Terminal will show
“
OIL PUMP RUNNING
”.
d. The cooling fan will start when the oil pump starts. The GT
Terminal will show “
FAN MOTOR RUNNING
”.
e. The compressor motor will start 3 seconds after the cooling fan
starts. The GT Terminal will show “
COMPRESSOR RUNNING
”.
f. The compressor will load 5 seconds after oil pressure reaches 10
psig. The
LOAD
light will turn on. The GT Terminal will show
“
LOADED
” on the temperature or pressure page. Note: If manual
unload is selected the compressor will not load.
g. The compressor will unload when system pressure reaches the
unload pressure setting. The
LOAD
light will turn off.
4.2
Stopping the
Compressor
A 5 second delay is initiated each time the compressor unloads. When
the stop signal is present the shutdown sequence will begin when this
delay is completed.
4.2.1
Manual
Stop
a. Press the Stop button. The compressor will unload and the
LOAD
light will turn off. The GT Terminal will show “
UN
LOAD
” on the
temperature or pressure page.
b. 5 seconds after unloading the main motor starter will drop out. If
the compressor had run unloaded for at least 5 seconds the main
motor starter will drop out when the Stop button is pressed. The
GT Terminal will show “
COMPRESSOR STOPPED
”. The compressor
will coast to a stop.
c. The lube oil pump continues to operate for 5 seconds after the
compressor starter drops out, then turns off. The GT Terminal
will show “
OIL PUMP STOPPED
”.
c. The fan continues to operate for 20 seconds after the
compressor starter drops out, then turns off. The
RUN
light will
turn off. The GT Terminal will show “
FAN MOTOR STOPPED
.
d. Note that the
STANDBY
pilot light is not on. This indicates that the
compressor has been stopped manually and must be manually
restarted.
WARNING:
When compressor service is being performed the air
service valve must be closed and the power disconnected. Safety
procedures must be strictly followed, with lock-out and tag-out
procedures required.
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