Product Manual

8
EMAX Rotary Screw Compressors
Motor Rotation
After electrical installation is complete, check
the direction of the motor rotation.
1. Lightly push START and STOP buttons on the
instrument panel. View unit while facing the
drive pulleys (from the back). Pulleys should
turn counter clockwise.
2. If motor shaft is not turning counter clock-
wise, disconnect power to terminal block
then exchange any two of the three power
leads. Re-check rotation.
System Description
The EMAX compressor is highly efficient and provides
reliable performance with low wear parts, low vibra-
tion and quiet operation. An electric motor, which is
controlled by a Programmable Logisitical Controller
(PLC), runs the compressor and is actuated with a belt
drive system. The belt drive system utilizes pulleys to
connect the motor to the main rotor shaft.
Air Process
Air enters the system through the suction valve which
has a suction filter to remove dust. The air is mixed
with the lubricating oil and flows into the air/oil
separator tank. It passes through an air/oil separator
filter then through a minimum pressure check valve.
Air then passes through an air cooled after cooler
then into storage tank.
Lubrication Process
Pressure in the oil / air separator presses lubricating
oil into the oil cooler. The oil is cooled and filtered
then divided into two parts. One part is injected into
the compression chamber from the lower end of the
rotary compressor body to cool the compressed air.
The other part passes through the two ends of the
compressor body and is used to lubricate internal roll-
er bearings of rotary compressor pump and gear drive.
The two parts meet at the bottom of the compression
chamber and are drained out with the compressed air.
System Components
PLC (Programmable Logisitical Controller)
The PLC is the compressor controller and has a
display screen for system information. The electric
circuitry of the PLC can be divided into two systems.
One is for the starting panel to configure Y Delta
starting. The other is for internal computer controls
and is explained in more detail in the PLC manual.
If there is any failure, contact EMAX service depart-
ment. Refer to figure 8 for explanation of buttons.
Maintenance Notifications
There are five automatic maintenance notifications
built into the EMAX compressor system designed to
signify when maintenance is due for certain com-
ponents. An alarm will sound and a message will be
displayed on the control panel. Refer to the follow-
ing chart for the components that have automatic
maintenance notifications and their factory set
lifetimes.
1 ON Button: Press this button to start compressor.
2 OFF Button: Press this button to stop compressor.
3 M (Save Data): Press this button to confirm and save input
after changes have been made.
4 Down Scroll Menu: Press this button to scroll down through
menus while changing settings or making menu selections.
5 Up Scroll Menu: Press this button to scroll up through
menus while changing settings or making menu selections.
6 Cursor/Confirm Button: This button can be used as a cursor
while changing settings and to confirm a menu selection.
7 RT Return/Reset Button: Press this button to return to a
previous menu OR press and hold for approximately 5 seconds
to reset any fault or error codes.
8 Emergency Stop: Use only for emergency to stop compressor
immediately. Use normal stop at all other times.
Factory Set Password: 0518
1 2 3 4 5 6 7 8
Figure 8: PLC Control Buttons