SECTION 1
®SULLAIR®
2
3700 Operator’s Manual and Parts List
1.3 PRESSURE RELEASE
A. Install an appropriate flow-limiting valve between 
the service air outlet and the shut-off (throttle) 
valve, either at the compressor or at any other 
point along the air line, when an air hose 
exceeding 13mm inside diameter is to be 
connected to the shut-off (throttle) valve, to 
reduce pressure in case of hose failure, per 
OSHA Standard 29 CFR 1926.302(b)(7) and/or 
any applicable Federal, State and Local codes, 
standards and regulations. 
B. When the hose is to be used to supply a manifold, 
install an additional appropriate flow-limiting valve 
between the manifold and each air hose 
exceeding 13mm inside diameter that is to be 
connected to the manifold to reduce pressure in 
case of hose failure. 
C. Provide an appropriate flow-limiting valve at the 
beginning of each additional 23m of hose in runs 
of air hose exceeding 13mm inside diameter to 
reduce pressure in case of hose failure. 
D. Flow-limiting valves are listed by pipe size and 
flow-rated. Select appropriate valves accordingly, 
in accordance with their manufacturer’s 
recommendations.
E. DO NOT use air tools that are rated below the 
maximum rating of the compressor. Select air 
tools, air hoses, pipes, valves, filters and other 
fittings accordingly. DO NOT exceed 
manufacturer’s rated safe operating pressures for 
these items. 
F. Secure all hose connections by wire, chain or 
other suitable retaining device to prevent tools or 
hose ends from being accidentally disconnected 
and expelled.
G. Open fluid filler cap only when compressor is not 
running and is not pressurized. Shut down the 
compressor and bleed the sump (receiver) to zero 
internal pressure before removing the cap.
H. Vent all internal pressure prior to opening any line, 
fitting, hose, valve, drain plug, connection or other 
component, such as filters and line oilers, and 
before attempting to refill optional air line anti-icer 
systems with antifreeze compound.
I. Keep personnel out of line with and away from the 
discharge opening of hoses or tools or other 
points of compressed air discharge.
J. Use air at pressures less than 2.1 bar for cleaning 
purposes, and then only with effective chip 
guarding and personal protective equipment per 
OSHA Standard 29 CFR 1910.242 (b) and/or any 
applicable Federal, State, and Local codes, 
standards and regulations.
K. DO NOT engage in horseplay with air hoses as 
death or serious injury may result.
1.4 FIRE AND EXPLOSION
A. Clean up spills of lubricant or other combustible 
substances immediately, if such spills occur.
B. Shut off the compressor and allow it to cool. Then 
keep sparks, flames and other sources of ignition 
away and DO NOT permit smoking in the vicinity 
when checking or adding lubricant or when 
refilling air line anti-icer systems with antifreeze 
compound. 
C. DO NOT permit fluids, including air line anti-icer 
system antifreeze compound or fluid film, to 
accumulate on, under or around acoustical 
material, or on any external surfaces of the air 
compressor. Wipe down using an aqueous 
industrial cleaner or steam clean as required. If 
necessary, remove acoustical material, clean all 
surfaces and then replace acoustical material. 
Any acoustical material with a protective covering 
that has been torn or punctured should be 
replaced immediately to prevent accumulation of 
liquids or fluid film within the material. DO NOT 
use flammable solvents for cleaning purposes.
D. Disconnect and lock out all power at source prior 
to attempting any repairs or cleaning of the 
compressor or of the inside of the enclosure, if 
any. 
E. Keep electrical wiring, including all terminals and 
pressure connectors in good condition. Replace 
any wiring that has cracked, cut, abraded or 
otherwise degraded insulation, or terminals that 
are worn, discolored or corroded. Keep all 
terminals and pressure connectors clean and 
tight.
F. Keep grounded and/or conductive objects such as 
tools away from exposed live electrical parts such 
as terminals to avoid arcing which might serve as 
a source of ignition.
G. Remove any acoustical material or other material 
that may be damaged by heat or that may support 
combustion and is in close proximity, prior to 
attempting weld repairs.
H. Keep suitable fully charged Class BC or ABC fire 
extinguisher or extinguishers nearby when 
servicing and operating the compressor.    
I. Keep oily rags, trash, leaves, litter or other 
combustibles out of and away from the 
compressor.    
J. DO NOT operate the compressor without proper 
flow of cooling air or water or with inadequate flow 
of lubricant or with degraded lubricant.