- 7 -
PRE-START CHECKLIST
(continued)
ELECTRIC EXTENSION CORD TABLE
Minimum Wire Size
Extension
Cord Length
Motor
1/2 and 3/4 HP
Motor
1, 1-1/2, and 2 HP
Up to 25 ft.
14 Ga.
12 Ga.
25 50 ft.
12 Ga.
10 Ga.
50 100 ft.
10 Ga.
8 Ga.
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 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.
SPECIFICATIONS
OPERATION
WARNING
Your safety and the wellbeing of others during the operation of every
ROLAIR
compressor is 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
-
and keep drain open for a few seconds after starting to warm up motor/pump assembly. Make sure the pressure
aintain 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
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.
VT20ST
Horsepower
2 HP
Tank Capacity
4.2 Gallon
Voltage
120 V
Pump-Up Time (0-125 PSI)
1:23
Hertz
60 hZ
Recovery Time (95-125 PSI)
:20
Phase
Single
CFM Displacement
5.5
Motor RPM
1700
Cu. Ft. Delivered @ 40 PSI
4.8
Stages
Single
Cu. Ft. Delivered @ 90 PSI
4.2
Amperage
13.5
Dimensions (LxWxH in)
19x16x17
Thermal Protection
Manual
Weight
62 lbs
Factory Settings
Oil Fill Amount
95-125 PSI
10 oz
Noise Level
Duty Cycle
79 dBA
Continuous
