Mounting Of Compressor; Service Air Piping; Coupling Alignment Check; Fluid Level Check - Sullair LS-20T Operator's Manual

4.1 MOUNTING OF COMPRESSOR

A foundation or mounting capable of supporting
the weight of the compressor, and rigid enough to
maintain the compressor frame level and the com-
pressor in alignment is required. The compressor
frame must be leveled and secured with foundation
bolts, and full uniform contact must be maintained
between the frame and foundation. No piping
loads shall be transmitted to the compressor at the
external connections.

4.2 SERVICE AIR PIPING

Service air piping should be installed as shown in
F i g u r e 4 --- 1 . A s h u t --- o f f v a l v e s h o u l d b e i n s t a l l e d t o
isolate the compressor from the service line if re-
quired. Also notice that the service line should be
equipped with water legs and condensate drains
throughout the system.
Under certain conditions for inside installations,
it may be desirable to pipe the relief valves to the
outside of the building.

4.3 COUPLING ALIGNMENT CHECK

In preparation for the factory test, the coupling sup-
plied with your compressor is properly aligned for
operation. The motor is flange---mounted to the
compressor unit. Therefore it is not necessary to re-
check this alignment.

4.4 FLUID LEVEL CHECK

The 2---stage air compressor is also supplied with
the proper amount of fluid. However, it is necessary
to check the fluid level at installation. The level is
checked by looking at the sight glass located near
the sump. If the sump is properly filled, the fluid
level should be visible in the sight glass.

4.5 MOTOR ROTATION CHECK

After the electrical installation has been done, it is
necessary to check the direction of motor rotation.
Pull out the EMERGENCY STOP button and press
Figure 4 ---1 Service Air Piping
NOTE
once, quickly and in succession, the (START) I and
(STOP) O pads. This action will bump start the mo-
tor for a very short time. When looking at the motor
rear end, the driveline should be rotating in the di-
rection indicated by the "Direction of Rotation" de-
cal located on the top of the compressor/motor
adapter piece. If the reversed rotation is noted, dis-
connect 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 top of the compressor/motor adaptor piece.

4.6 ELECTRICAL PREPARATION

Interior electrical wiring is performed at the factory.
Required customer wiring is minimal, but should
be done be a qualified electrician in compliance
with OSHA, National Electrical Code, and any other
applicable local electrical code concerning isola-
tion switches, fused disconnects, etc. Sullair pro-
vides a wiring diagram for use by the installer.
A few electrical checks should be made to help as-
sure 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 (see
electrical box section in Parts List).
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 START
"I" pad and check all protective devices to be
sure that they will de---energize the starter coil
when activated.
5. Reconnect the three (3) motor leads and jog the
motor for a direction of rotation check, as ex-
plained in Section 4.5.
Section 4
INSTALLATION
DAN GER
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