Electrical Preparation- Supervisor Controller; Motor Rotation Direction Check- Standard Electro-Mechanical; Motor Rotation Direction Check- Supervisor Controller - Sullair LS-120 series Operators Manual And Parts Lists

" " (START) push button and check all pro-
tective devices to be sure that they will de-ener-
gize the starter coil when tripped.
5. Reconnect the motor leads and jog the motor for
a direction of rotation check as explained in
Section 4.8.
Wiring diagram for standard compressors is sup-
plied on the inside cover of the Control Center.
Optional compressor wiring diagrams will vary.
4.7 ELECTRICAL PREPARATION- SUPERVISOR
CONTROLLER
Interior electrical wiring is performed at the factory.
Required customer wiring is minimal, but should be
done by a qualified electrician in compliance with
OSHA, National Electric Code and/or any applica-
ble local electrical code concerning isolation switch-
es, fused disconnects, etc. Sullair provides a wiring
diagram for use by the installer.
An electrical check should be made to help assure
that the first start-up will be trouble-free.
Lethal shock hazard inside. Disconnect all power
at source, before opening or servicing.
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.
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) pad and check all protective
devices to be sure that they will de-energize the
starter coil when tripped.
5. Reconnect the three (3) motor leads and jog the
motor for a direction of rotation check, as
explained in Section 4.9.
4.8 MOTOR ROTATION DIRECTION CHECK- STAN-
DARD ELECTRO-MECHANICAL
Motor rotation check must be made at compressor
start-up. Remove compressor panel as needed to
view motor rotation.
After the electrical wiring has been done, it is nec-
essary to check the direction of the motor rotation.
This can be accomplished by toggling between the
" " (START) and "
the control panel. Verify proper rotation by observ-
ing the motor shaft from the end opposite the com-
pressor unit, the shaft should be turning clockwise.
If the motor shaft is not turning clockwise, discon-
nect the power to the starter and exchange any two
of the three power input leads, then re-check rota-
tion. A "Direction of Rotation" decal is located on the
motor to show proper motor/compressor rotation.
An alternative to this procedure is to monitor the
sump pressure gauge when pressing the "
(START) push button.
shown on the sump pressure gauge when the com-
pressor is started, then the proper motor rotation
has been achieved. If no pressure is indicated,
press the " " (STOP) push button immediately.
This indicates improper motor rotation. Disconnect
the power to the starter and exchange any two of
the three power input leads. Recheck rotation as
outlined above.
4.9 MOTOR ROTATION DIRECTION CHECK -
SUPERVISOR CONTROLLER
Motor rotation check must be made at compressor
start-up. Remove compressor panel as needed to
view motor rotation.
After the electrical wiring has been done, it is nec-
essary to check the direction of the motor rotation.
Pull out the EMERGENCY STOP button and press
once, quickly and in succession, the "
(START) and "
bump start the motor for a very short time. When
looking at the motor from the end opposite the com-
pressor unit, the shaft should be turning clockwise.
If the reversed rotation is noted, disconnect the
power to the starter and exchange any two of the
three power input leads, then re-check rotation.
An alternative to this procedure is to set the
Supervisor Controller to display P1. Pull out the
EMERGENCY STOP button and press once, quick-
ly and in succession, the "
(STOP) pads. This action will bump start the motor
for a very short time. If motor rotation is correct
there will be immediate pressure shown. If no pres-
sure is present, reverse rotation is occurring.
Disconnect the power to the starter and exchange
any two of the three power input leads. Recheck
rotation as outlined above.
Section 4
INSTALLATION
" (STOP) push buttons on
If immediate pressure is
" (STOP) pads. This action will
" (START) and "
"
"
"
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