INSTALLATION
®SULLAIR®
3700 Operator’s Manual and Parts List
27
FLUID CONTAINMENT
Compressors are equipped with a fluid containment pan
to catch any fluid in the event of a leak or spill. The drain
for the pan is located on the air intake end of the
machine. For indoor installations, the drain should be
plugged to contain fluids. For outdoor applications, the
drain must be connected to a separate, customer
supplied system to allow rainwater or any accumulated
compressor fluid to drain out.
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 oil level is to be
checked when the compressor is in the SHUT DOWN
MODE (oil level may not be visible when operating),
and by looking at the sight glass on the sump. To be
able to see the oil level it may be necessary to start
the machine and build the sump pressure up to
10/20 psi and then shut down. If no oil level is seen in
the sight glass add oil to the center of the glass. Do not
overfill in any case. When a complete oil change is
performed, fill the sump to the maximum allowable fluid
level (up to the fill plug.)
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 Electrical
Code, and/or any other applicable state, federal and
local electrical codes concerning isolation switches,
fused disconnects, etc.
• The compressor and drive should be provided with
a proper grounding conductor/earthed in
accordance with both local and National Electrical
Code (NEC) 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
electrical circuit the system is connected to is
balanced and not overloaded by any other electrical
equipment. The length of wiring from a suitable
electrical feed point is critical as voltage drop may
impair the performance of the compressor. Cable
sizes may vary so the mains terminals will accept
from 50 mm
2
(1 awg) (37/4 Sk & 50/60 H) 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. If another hole is
used, the original hole must be blocked off with a
suitable knockout seal.
• A few electrical checks should be made to help
assure that the first start-up will be trouble-free.
A CAUTION
The use of plastic bowls on line filters and
other plastic airline components without
metal guards can be hazardous. Synthetic
coolants or the additives used in mineral
oils can alter their structural integrity and
create hazardous conditions. Metal bowls
should be used on any pressurized
system for safety concerns.
"The Plastic Pipe Institute recommends
against the use of thermoplastic pipe to
transport compressed air or other
compressed gases in exposed above
ground locations, e.g. in exposed plant
piping." (I)
Sullube should not be used with PVC
piping systems. It may affect the bond at
cemented joints. Certain other plastic
materials may also be affected.
(I) Plastic Pipe Institute, Recommendation
B, Adopted January 19, 1972.
SU_0000032
NOTE
Customer must provide electrical supply
power disconnect within sight of machine.
The fuse protecting the circuit and the
compressor must be selected in
accordance with the data provided in the
general information section.
SU_0000033
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