Section 4
INSTALLATION
23
5. Reconnect the motor leads and jog the motor for
a dir ec tion of r otation c hec k as ex plained in Sec -
tion 4.8.
NOTE
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 II
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
switches, 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.
DANGER
!
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 compres-
sor 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. En-
ergize the control circuits by pushing the
“I”
(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 ex-
plained in Sec t ion 4 .9.
4.8 MOTOR ROTATION DIRECTION CHECK
NOTE
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 neces-
sary to check the direction of the motor rotation.
Pull out the
EMERGENCY STOP
button and press
once, quickly and in succession, the
“I” (START)
and
“O” (STOP)
pads. This action will bump start
the motor for a very short time. When looking at the
motor from the end opposite the compressor unit,
the shaft should be turning clockwise. If the re-
versed rotation is noted, disconnect the power to the
starter and exchange any two of the three power in-
put leads, then re--check rotation. A “Direction of
Rotation” decal is located on the motor to show
proper motor/compressor rotation.
An alternative to this procedureis to set the Supervi-
sor to displayP1. Pull out the
EMERGENCY STOP
button and press once, quickly and in succession,
the
“I” (START)
and
“O” (STOP)
pads. This action
will bump start the motor for a very short time. If mo-
tor rotation is correct there will be immediate pres-
sure shown. If no pressure is present, reverse rota-
tion is occurring. Disconnect thepowerto thestarter
and exchange any two of the three power input
leads. Recheck rotation as outlined above.
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