OPERATING INSTRUCTIONS
30
M200–LV M250–LV
CHECK INLET CTRL SYS – This will occur if the inlet butterfly valve
is in an incorrect position.
CHECK MOTOR ROTATION – This will occur if the machine is started
and the compressor has incorrect rotation.
CONTROL POWER LOSS – This will occur if the controller detects a
loss of the 110 VAC control power.
EMERGENCY STOP– This will occur if the Emergency Stop button is
engaged. The button must be disengaged before the alarm can be
cleared.
FAN MOTOR OVERLOAD– This will occur if a fan motor overload is
sensed.
HIGH AIREND DISCH TEMP– This will occur if the airend discharge
temperature is greater than 228
_
F (109
_
C).
LOW SUMP AIR PRESSURE– This will occur if the machine is running
fully loaded and the sump pressure drops below 20 psig (1,4 bar).
LOW UNLOAD SUMP PRESS– This will occur if the machine is
running unloaded and the sump pressure is less than 15 psig (1,0 bar)
for 15 seconds.
MAIN MOTOR OVERLOAD– This will occur if a drive motor overload
is sensed.
MEMORY FAULT– This will occur if the controller has determined
some of the data stored in memory contains unacceptable values.
When this occurs, the sensors should be calibrated and all the set
points checked. It is normal for this alarm to occur after changing
controller software.
REMOTE START FAILURE– This will occur if the Remote Start button
is pressed after the machine is running or if the Remote Start button
remains closed.
REMOTE STOP FAILURE– This will occur if the Remote Stop button
remains open and either Start button is pressed.
SENSOR FAILURE 1AVPT (or 3APT, 4APT, 2CCT, 2ATT)– This will
occur if a sensor is recognised as missing or broken. This does not
apply to sensor 4ATT.
STARTER FAULT– This will occur if the starter contacts open while the
machine is running. It will occur if the machine is given the stop
command and the starter contacts do not open.
STEPPER LIMIT SWITCH– This will occur if both limit switches are
activated at the same time.
PRIOR TO STARTING
Refer to the diagram T5461
WARNING: Ensure that all protective covers/guards are in place
before attempting to start the machine.
1: Check the coolant level in the sight tube/glass. Add coolant if
necessary.
2: Ensure that the discharge air isolation valve is open.
3: Switch on the main electrical isolation switch. The power on
indicator will illuminate, indicating that the line and control voltages are
available.