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Speedaire Operating Instructions
Models 4MU10A and 3VB60
AIR FILTER
Never run the compressor pump
without an intake air filter nor with a
clogged intake air filter. Use compressed
air to blow the filter clean. Do not wash
or oil the element. If it cannot be blown
clean, the filter must be replaced.
Operating compressor with a dirty
filter can cause high oil consumption
and increase oil contamination in the
discharge air.
INTERCOOLER (TWO-STAGE
COMPRESSORS ONLY)
Intercooler fins
are sharp, always
wear gloves and use care when you
clean or work near the intercooler.
Weekly, check the intercooler to be sure
all fittings are secure and tight. Blow all
dirt, dust and other accumulations from
the intercooler fins.
COMPONENTS
Turn off all power and use light air
pressure to blow dust and foreign
material from cylinder head, motor, fan
blades, air lines, intercooler and tank on
a monthly basis.
Operation
Check Safety Valve
Drain Tank (See Figure 6)
Check Oil Level
Check Air Filter
Check Intercooler (two-stage compressors only)
Clean Unit Components
Check Belt Tightness
Change Oil (See Figure 5)
Change Oil Filter (Pressure lubricated pumps only)
BELTS
Lock out and tag
the power then
release all pressure from the tank to
prevent unexpected movement of the
unit.
Check belt tension every 3 months.
Adjust belt tension to allow 3/8 to
1/2 in. deflection with normal thumb
pressure. Also, align belts using a
straight edge against the face of the
flywheel and touching the rim on both
sides of the face. The belts should be
parallel to this straight edge (see Figure
9). Dimension A1 should be the same as
A2 and A3 to ensure proper alignment
of the belts.
Slots in the bed-plate make it easy to
slide the motor back and forth to adjust
belt tension.
Figure 9 - Top view
MAINTENANCE SCHEDULE
Daily
7
STORAGE
If compressor is to be stored for a short
period of time, make sure that it is
stored in a normal position and in a
cool protected area.
Flywheel
Motor pulley
Straight edge (board)
Weekly
Monthly
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