Sullair 02250160-842, Instruction Manual

Page: 10 / 31

Section 2
STARTUP PROCEDURES
6
2.3 WS START UP PROCEDURES
2.3.1 COMPRESSOR MOTOR ROTATION DIRECTION CHECK (at installation)
After the compressor has been installed and the electrical wiring is completed, perform
following steps to verify the direction of the compressor motor rotation.
1. If the display screen shows “AUTOMATIC”, press the UP arrow pad twice to
navigate to the
Mode
parameter. Press the ENTER pad. The screen will display
reverse characters indicating change mode is active. Press the down arrow pad
to highlight the “MANUAL” selection (it will appear in reverse text in the display).
Press the ENTER pad to accept the change and place the machine in the
Manual
operating mode.
2. Press the START and STOP pads in succession to “bump start” the
compressor.
3. Observe the direction of the compressor motor shaft. When looking at the motor
from the end opposite the compressor unit, the shaft should be turning
clockwise
on
all gear driven models, and
counterclockwise
on direct drive models. A “Direction of
Rotation” decal is located on the coupling guard between the motor and compressor
to show proper motor/compressor rotation.
4. If the motor shaft is not turning in the proper direction, disconnect the power to the
starter and exchange any two of the three power input leads. Refer to the
Compressor Operator’s Manual.
5. Perform above steps 1 - 3 again to confirm proper motor/compressor rotation.
Variable speed drive ( VSD) packages do not require a main motor direction
check since the variable speed motor is set at the time of manufacture.
NOTE
2.3.2 FAN MOTOR ROTATION CHECK (at installation)
Verify the correct fan motor rotation using the following steps:
1. With the compressor running, visually check that the fan rotation is correct.
2. If it is incorrect, change the direction of the fan motor by disconnecting power from
the compressor.
3. Exchange any two of the three fan motor leads at the fan motor starter. Refer to the
compressor Operator’s Manual.
4. Recheck the direction of the fan motor.
2.3.3 INITIAL START-UP AFTER INSTALLATION
Perform the following procedure at the initial start-up of the compressor following
installation.
1. Verify that all preparations and checks necessary for proper installation have been
made. Refer to the compressor Operator’s Manual.
2. Read the preceding pages of this manual thoroughly.