4.4
COUPLING ALIGNMENT CHECK
No coupling alignment is required.
4.5
FLUID LEVEL CHECK
The air compressor is shipped with the proper amount of
fluid installed. However, it is necessary to check the fluid
level at the time of installation and during continued
operation of the compressor. The fluid level is to be
checked when the compressor is in the SHUT DOWN
MODE (fluid level may not be visible when operating), and
by looking at the sight glass on the receiver tank. To be
able to see the fluid level it may be necessary to start the
machine and build the receiver tank pressure up to 10/20
psi and then shut down. If no fluid level is seen in the sight
glass add fluid to the center of the glass. Do not overfill in
any case. When a complete fluid change is performed, fill
the receiver tank to the maximum allowable fluid level,
which is center of the sight glass.
4.6
ELECTRICAL PREPARATION
Interior electrical wiring is performed at the factory.
Required customer wiring should be done by a qualified
electrician in compliance with OSHA, National Electric
Code and/or any applicable 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. The compressor and drive
should be properly grounded/earthed in accordance with
Local and National Code requirements.
Installation of this compressor must be in accordance with
recognized electrical codes and any local Health and
Safety Codes.
Feeder cables should be sized by the customer/electrical
contractor to ensure that the circuit is balanced and not
overloaded by other electrical equipment. The length of
wiring from a suitable electrical feed point is critical as
voltage drops may impair the performance of the
compressor. Cable sizes may vary considerably so the
mains terminals will accept up to 50 mm
2
(1 awg) (37/4 Sk
& 50/60 H) and up to 90 mm
2
(3/0 awg) (55/75 k & 75/100
H) cable.
Feeder cable connections to incoming terminals L1-L2-L3
should be tight and clean.
The applied voltage must be compatible with the motor
and compressor data plate ratings.
A starter hole is provided for incoming power connection.
If it is necessary to make a hole in the control box in a
different location, care should be taken to not allow metal
shavings to enter the starter and other electrical
components within the box. If another hole is used, the
original hole must be blocked off:
DANGER
Lethal shock hazard inside.
Disconnect all power at source before
opening or servicing.
1. Check incoming voltage. Be sure that the incoming
voltage is the same voltage that the compressor was
wired for.
2. Check motor starter and overload heater sizes.
3. Check all electrical connections for tightness.
4. "DRY RUN" the electrical controls by disconnecting
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 Motor
Rotation Direction Check on page 56.
4.7
MOTOR ROTATION DIRECTION
CHECK
Motor rotation check must be made at compressor start-
up. The compressor can be damaged if it runs in the wrong
direction for more than a few seconds. Motor rotation can
be viewed through the opening in the drive adapter
housing. After the electrical wiring has been done, it is
necessary to check the direction of the motor rotation. Pull
out the EMERGENCY STOP button and press once,
quickly and in succession, the " " (START) and
" " (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 reversed rotation is noted,
disconnect the power to the starter and exchange any two
of the three power input leads, then re-check rotation. A
"Direction of Rotation" decal is located on the motor drive
housing to show proper motor/compressor rotation. An
alternative to this procedure is to set the WS Controller to
display P1 receiver tank pressure. Pull out the
EMERGENCY STOP button and press once, quickly and
in succession, the " " (START) and " " (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 pressure 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.
Fan motor rotation should also be checked. It should rotate
counter-clockwise when viewing the fan motor from the
backside of the motor.
SECTION 4
56
3000-4500 Operator’s Manual and Parts List
®SULLAIR®
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