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Go to PG 2 of the SELECT SETPOINT screen.
The second page of the SETUP screen will appear.
Touch the rectangle to enter the Authorization Code and enter seven
digits using the keypad that appears. We suggest using the last seven
digits of the serial number.
You may now return to the SYSTEM STATUS screen.
Start Up & Operation
1. Follow all the procedures under "Before start-up" before
attempting operation of the compressor.
2. Switch on the electric source.
3. Verify the display screen is lit.
4. If an isolation valve is installed between the compressor unit
and the air receiver, make sure it is open. Close the isolation
valve between the air receiver and the facility piping.
5. Pushing the ON button beside the touch screen will allow the
unit to start and operate automatically. Pushing the OFF button
will stop the motors, but the HMI screen will remain active.
6. If the pressure does not rise, turn the unit off, the unit is running
backwards. Have a qualified electrician switch the breaker OFF
and exchange two out of the three phases of electrical source.
If pressure is rising, allow the compressor unit to run. Each
compressor motor will automatically turn off as the pressure
rises and the maximum operating pressure is reached. Pressure
settings may be adjusted as described below.
7. Open the isolation valve between the air receiver and the
facility piping. The compressor will start and stop each pump
as needed to maintain the pressure between the high and low
set points.
8. After a few hours and again after a few days, check the display
screen to see if the ALARM screen has appeared. If a HIGH
TEMPERATURE or MOTOR OVERLOAD condition occurs, the
alarm screen will appear and the affected pump-motor will
RELEASED 01/Jul/2024 12:28:06 GMT
7.5-15 kW (10-20 HP) Scroll Enclosed Air Compressors
Shut Down
seconds, the check valve needs to be cleaned or replaced.
Stopping the Compressor During Emergency Operation
power off at the main disconnect panel.
Multi-stage Control
control. It can start and stop each air end according to pressure and
air consumption, automatically select the number of air ends in
accordance with air consumption and achieve optimum and uniform
operation at all times as well as energy-saving and labor-saving
operation.
be taken out of service. If the chosen settings are causing the
motors to start too frequently, the ALARM screen will appear
and the MOTOR WARNING indicator will illuminate. Motor
warning will not take the motor out of service, but the user
should take action to prevent motor overload and damage.
To reduce motor starting frequency, adjust the set points to a
wider range between High and Low and possibly increase the
differential. If starting is still too frequent, a larger or additional
air receiver will be needed.
1. Stop the compressor by pushing the OFF button.
NOTE: If the compressor rotates in reverse for more than five
2. Switch the breaker OFF if the compressor is not to be used for
a long period of time.
Stop the compressor by pushing the OFF button or by turning the
As this compressor uses plural air ends, it employs multi-stage
1. Multi-stage control - Among air ends which are operating under
group control, it stops the air end which has been operating for
a longer time and restarts the air end whose operating time
has been shorter, thus resulting in equalization of operating
time of each air end and operation with a min. quantity of air
ends in accordance with air consumption and energy-saving
operation by eliminating waste of electricity. The chart below
shows the relationship between pressure and the quantity of
air ends operating for an W15-Q model. The same concept is
applied to 3 air ends for an W11-T and 2 for an W7.5-D.
2. Automatic Alteration: When air demand allows one or more
air ends to remain idle, the control will automatically shift
operation to equalize usage after 30 minutes. If air demand
increases and pressure drops, the control will energize
additional air ends as needed, starting the one with the longest
off time first. The control will also de-energize air ends as
pressure rises.
3. The control allows the user to adjust the pressure settings.
To minimize power consumption, the user should select the
lowest maximum pressure that is suitable for the operations
being performed. The smallest gap between minimum and
maximum pressure that avoids too frequent motor starting
should also be selected.
4. The control will automatically prevent multiple motors from
starting simultaneously by inserting a three second delay.
47672197001 • 04/17/24 • Rev. F
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