Motor Rotation Direction Check - Sullair LS-25 Operator's Manual And Parts List

Section 4
INSTALLATION
Figure 4-1 Service Air Piping (Typical Installation)
plicable local electrical code concerning isolation
switches, fuse disconnects, etc. Sullair provides a
wiring diagram for use by the installer.
Lethal shock hazard inside. Disconnect all power
at source, before opening or servicing starter or
control panel.
1. Check incoming voltage. Be sure that the incom-
ing voltage is the same voltage that the com-
pressor was wired for.
2. Check starter and overload heater sizes (see
electrical parts in Parts Manual).
3. Check all electrical connections for tightness.
4. "DRY RUN" the electrical controls by disconnect-
ing the three (3) motor leads from the starter.
Energize the control circuits by pushing the
START button and check all protective devices to
be sure that they will de-energize the starter coil
30
when activated.
5. Reconnect the three (3) motor leads and jog the
motor for a direction of rotation check, as ex-
plained in Section 4.7.

4.7 MOTOR ROTATION DIRECTION CHECK

After the electrical wiring has been done, it is nec-
essary to check the direction of the motor rotation.
This can be done by jogging the START and STOP
buttons on the instrument panel. When looking at
the motor from the end opposite the compressor
unit, the shaft should be turning counterclockwise.
If the motor shaft is not turning in the proper direc-
tion, disconnect the power to the starter and ex-
change any two of the three power input leads, then
re-check rotation.
An arrow is welded into the coupling guard indicat-
ing proper motor/compressor rotation.