OPERATING INSTRUCTIONS
54
SL, SM & SH 90, 110, 132, 150, 200, 250 &300 (50Hz)
L, H & HH 125, 150, 200, 250, 300, 350 & 400 (60Hz)
EMERGENCY STOP SWITCH (1)
Pressing this switch stops the compressor immediately. The
compressor cannot be restarted until the switch is manually reset. Turn
clockwise to reset.
POWER ON LIGHT (2
)
Indicates that control voltage is available to the control circuit and
line voltage is available for starting.
Before starting the compressor, ensure that:–
.
The system has been inspected and earthed.
.
No persons are in a hazardous position.
PUSH BUTTONS
START (3)
If the display shows READY TO START, pressing this button will
start the compressor. The compressor will start in an unloaded state
then automatically load depending on demand.
UNLOADED STOP (4)
Pressing this button will activate the unloaded stop sequence. If the
compressor is running loaded, it will unload. Ten seconds later it will
stop. If the compressor is running unloaded, it will stop immediately.
UNLOAD (5)
Pressing this button will cause the compressor to unload and
remain unloaded. The display will indicate that the machine is
RUNNING UNLOADED and MODE:UNLOAD.
LOAD (6)
Pressing this button will cause the compressor to load if the
compressor is running and if the DISCHARGE PRESSURE is less
than the ONLINE PRESSURE. This also returns the machine to the
operating mode that is specified by the MODE OF OPERATION set
point.
The other five buttons provide access to various
operator–selectable functions and machine operating conditions. The
purpose of each of these buttons is defined by the display screen and
the particular function being performed at that time.
ARROWS (7)
These up and down buttons have multiple functions relating to the
right half of the display screen. When lists are presented, the buttons
are used to move up or down through the items on the list. The small
arrow(s) displayed in the upper right hand corner of the display screen
indicate when you can move up (designated by arrow head pointing up)
and/or down (designated by arrow head pointing down) through the list.
When the value of a specific machine operating parameter is
highlighted on the display screen for the purpose of changing that
value, the buttons are used to change the value itself.
