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5. USE LONGER PROPERLY SIZED AIR HOSE RATHER THAN EXTENSION CORDS
If an extension cord must be used, please refer to the chart below for the proper gauge and maximum
length that can be used. The use of inadequately sized air hose will also lead to frictional pressure drops
that could affect the proper performance of your air tools.
6. DO NOT USE A GENERATOR AS THE POWER SOURCE
Air compressors use inductive motors that require 3-5 times the full-load amp draw to properly start.
Most generators will not provide the wattage needed to properly start this type of electric motor.
7. CHECK TENSION OF BOLTS, BELTS, AND HARDWARE ON A REGULAR BASIS
Operation of any equipment with loose bolts and/or fittings will lead to excessive vibration
and the premature failure of the compressor system control components.
8. MAINTAIN RUBBER VIBRATION PADS
Excessive vibration is a major cause of premature compressor failure. Always maintain the rubber
vibration pads located beneath tank assembly. Operation without them will void your warranty.
9. DRAIN MOISTURE FROM AIR TANKS DAILY
Water is a natural byproduct of compressed air. Drain air tank(s) after each use to combat internal tank
corrosion. Keep drain valve(s) closed if storing compressor for any length of time.
Extension
Cord Length
Up to 25 ft.
25 – 50 ft.
50 – 100 ft.
DO NOT ALTER FACTORY RPM SETTINGS ON GAS-POWERED COMPRESSORS. Engine throttle arm is
10.
factory set and locked into position at RPMs that will provide maximum performance, fuel consumption
and service life. Alterations to this setting will void your warranty.
WARNING – Your safety and the wellbeing of others during the operation of every ROLAIR
our main concern. Do not operate or permit anyone else to operate your air compressor until the
information contained in this manual is read and completely understood. Please contact your distributor or
our customer service department if you have any questions on the proper use of your air compressor.
DIRECT-DRIVE ELECTRIC
Establish that the air compressor is ready to operate by reviewing the topics and information
provided in the "Pre-Start Checklist" section of this manual. Slowly open tank drain to remove any
condensate that has accumulated and keep drain open for a few seconds after starting to warm up
motor/pump assembly. Make sure the pressure switch lever is in the "Off" position before plugging power
cord into a properly grounded outlet. Move pressure switch lever to the "On/Auto" position to build and
automatically maintain top end tank pressure setting. Rotate regulator adjustment knob counterclockwise
until the gauge attached reads 0 PSI before attaching air hose and accessory. Set working pressure by
rotating regulator adjustment knob clockwise and lock in working pressure according to specifications
provided by the tool manufacturer. Always use the pressure switch "On(Auto)/Off" lever to start or stop the
air compressor. Never stop the compressor by unplugging it from the power source. Store compressor in a
warm/dry location and perform maintenance as indicated in manual.
PRE-START CHECKLIST (con't)
ELECTRIC EXTENSION CORD TABLE
Minimum Wire Size
Motor
1/2 and 3/4 HP
14 Ga.
12 Ga.
10 Ga.
OPERATION
- 9 -
Motor
1, 1-1/2, and 2 HP
12 Ga.
10 Ga.
8 Ga.
compressor is
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