AS S E M B LY AND INSTA L L AT I O N
FOR THE SPECIFIC LOCATION OF THE
PUMP COMPONENTS REFERRED TO
BELOW, SEE THE LIST OF PUMP COMPO-
NENTS ON PAGE 4.
Assembling the Free-Air Pump
1. Remove assembly from plywood shipping
board and attach four rubber feet through
four holes in skid.
2. Install stand pipe (2), and INLET AIR FILT E R
(1) into threaded AIR INLET PORT (3).
3. Make sure the pump’s inlet air filter is locat-
ed in a clean, uncontaminated location
where breathable air is assured at all
times.
If the inlet air filter cannot be placed at a
source of clean, breathable air, install
Bullard’s 50 foot Inlet Extension Hose Kit
(Cat. No. V50IN) to the pump’s inlet port.
See the directions shipped with the
Extension Hose Kit for assembly instruc-
tions.
If clean breathable air cannot be guaran-
teed at all times within this 50 foot reach,
you may add up to five additional lengths o f
50 foot Extension Hose (Cat. No. V50EX).
Therefore, you may place your Inlet Filter
up to 300 feet (6 x 50) away from the pump.
Do not add more than 300 feet of inlet
extension hose to the pump.
H ow Air Motor Wo r k s
1. Compressed air enters through drive Air
Inlet (16), passes through pressure regula-
tor/filter (15); where pressure is controlled
and excess oil and water are removed.
Air pressure is adjusted with REGULATOR
KNOB (17) and is read on GAUGE (4).
(NOTE: 80 psig or higher during operation
is normal for this motor).
2. Air passes through LUBRICATOR (12)
where oil is added and metered.
3. Lubricated air passes through THROTTLE
VALVE (10) and drives AIR MOTOR (9).
4. Air is exhausted through motor exhaust
muffler (18) to atmosphere.
H ow Motor Drives Pump
M O TOR drives pump through a flexible coupler.
There are no belts to maintain or tighten.
H ow Pump Supplies Air
Clean breathable air must be supplied to
PUMP INLET AIR FILTER (1) at all times
(See Breathing Air Requirements on page 5).
The pump draws in air using four sliding car-
bon vanes set in a rotor, and discharges it
under low pressure out of discharge port.
Air passes through Bullard’s CARBOFINE
OUTLET FILTER CARTRIDGE (6) located
inside OUTLET FILTER HOUSING.
Bullard’s CARBOFINE filter cartridge is multi-
layered with 40 micron size particles of acti-
vated carbon, a sorbent bed with an exposed
carbon surface of more than 15,000 square
feet.
NOTE: Change this outlet filter cartridge at
least every 200 running hours.
Filtered breathing air passes out through one,
two, or three couplers (8) to one, two, or three
supplied-air respirators depending on the
style of respirator(s) being used (See table,
page 1).
Note that two, 1/2" Industrial Interchange
quick-disconnect couplers are supplied with
the factory packed unit. You may replace
these couplers to conform with the hose and
respirator you are using.
I n s t a l l a t i o n
NOTE: Use ample size hose from compressor
to pump; 1" or 3/4" internal diameter is best.
A larger diameter compressor air hose may
be required depending on operating condi-
tions and length of compressed air line.
The compressor must have capacity to contin-
uously supply at least 85 cfm of air at 95 psig
to drive the pump at its rated capacity.
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