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5

ADP3CA Free-Air® Pump

User Manual

oper
ating the 

free-
air Pump

Air passes through Bullard’s CARBOFINE OUTLET FILTER CARTRIDGE (6) located 

inside OUTLET FILTER HOUSING.
Bullard’s CARBOFINE outlet filter is triple wrapped with activated carbon media and 

has a rayon overwrap.
The properties of this filter include:
•STOPS 99.97% ALL OIL AEROSOLS
•99.97% D.O.P. EFFICIENCY (.3-.6 MICRON SIZE PARTICLES)
•MAXIMUM SOLID PARTICLE SIZE THAT WILL PASS THROUGH 0.3 MICRON
•MAXIMUM LIQUID PARTICLE SIZE THAT WILL PASS THROUGH 0.75 MICRON
As long as the customer has Grade D air going into the pump and the inlet and outlet 

filter are clean the pump should be working correctly and adheres to what is required.

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 airline respirators depending on the style of respirator(s) being used 

(See table, page 2).

note:

 The three 1/4” 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.

installation

note: 

Use ample size hose from compressor to pump; 1” or 3/4” internal 

diameter is best.  A larger diameter compressed air hose may be required 

depending on operating conditions and length of compressed air line.

The compressor must have capacity to continuously supply at least 85 cfm of air at 

95 psig to drive the pump at its rated capacity.

1.  Close THROTTLE vALvE (10).
2.  ATTACH HOSE WITH RESPIRATORS CONNECTED TO AIR OUTLETS (8) ON PUMP.
3.  Connect air supply to pump.
4.  Adjust AIR REGULATOR so COMPRESSED AIR GAUGE (4) reads 95 psig.
5.  Pump is ready to run. Open THROTTLE vALvE (10), build up speed and idle for 

a few minutes.

6.  Adjust THROTTLE vALvE (10) to run pump at desired psig on OUTLET AIR 

PRESSURE GAUGE (5).

7.  Adjust RELIEF-vALvE as follows:

note: 

The RELIEF vALvE is preset at the factory to “bleed off” at 25 psig.

a. Loosen lock nut.
b. Pinch off respirator air supply hose to create back pressure.
c. Speed up motor by opening throttle valve.
d. Adjust relief-valve to “bleed off” at a pressure 1 or 2 psig above that 

required by respirator.

e. Slow down motor and check that no air “bleeds” below required pressure.
f. Maximum output operating pressure is 25 psig.

note: 

Pump will reach 150° - 200° F during normal running conditions.

operating the free-air Pump

 WaRning

THE RESPIRATOR USER MUST NOT ENTER THE CONTAMINATED WORk AREA 

UNTIL ALL OF THE FOLLOWING STEPS HAvE BEEN COMPLETED.

1.  Analyze the atmosphere at the location of the pump’s air inlet filter. The inlet 

filter should be located in a clean, uncontaminated location where breathable 

air is assured at all times. The pump is equipped with a 2 ft. stand pipe to 

keep the intake away from the air motor exhaust port.

If the inlet 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 instructions.

If clean breathable air cannot be guaranteed at all times within this 50 foot 

reach, up to five (5) additional lengths of 50 foot Extension Hose (Cat. No. 

v50Ex) may be added.

Therefore, the inlet filter may be placed 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.

2.  Be sure you have read and followed all instructions for assembly and 

installation of the ADP3CA pump on pages 4 and 5.

3.  Pump Model ADP3CA will operate sitting on its four rubber mounts. It does 

not need to be bolted down.

4.  Assemble your respirator by following the manufacturer’s directions as 

described in the respirator’s Instruction Manual. Be sure the pump’s outlet 

pressure, measured by the pressure gauge on the pump, is greater than the 

minimum MSHA/NIOSH approved pressure required to operate the respirator.

The respirator’s minimum approved pressure will be found in the respirator’s 

Instruction Manual and/or on labels attached to the respirator.

If you have any questions as to whether or not your respirator is compatible 

with this pump, call Bullard’s Customer Service Department at 877-BULLARD.

5.  Connect the respirator’s MSHA/NIOSH-approved air supply hose(s) to the 

quick-disconnect Outlet Coupling(s) on the pump.

a. outlet couPling

The pump is equipped with three (3) each 1/4” Industrial Interchange quick-disconnect 

couplers (Cat. No. v15).

b.  connecting aiR suPPlY hose(s) Without 1/4” 

Quick-disconnect fittings

If your respirator’s MSHA/NIOSH-approved air supply hose will not attach to the 

pump’s standard 1/4” Industrial Interchange Outlet Couplings, (see above) the hose 

fitting can be adapted to the pump by converting the pump’s quick-disconnect outlet 

to 3/8” female NPT with the installation of one or more of the following adaptors.

Cat. No. V23

 - Converts SINGLE outlet to SINGLE 3/8” female NPT pipe thread.

Use Teflon tape or pipe thread sealer to ensure an air tight seal.
A variety of quick-disconnect fittings may then be used to connect the air supply 

hose to the 3/8” outlet adaptor. Contact your respirator’s manufacturer for the 

proper fitting (Hansen, Parker, Snap-Tite, Schrader, etc.)

6.  Before connecting your respirator to the air supply hose, turn the pump 

on. Allow the air to flow through the pump and hose for a few minutes to 

purge or expel any hose odors or moisture that may have accumulated 

inside the hose.

7.  Connect the respirator to the air supply hose using the quick-disconnect fittings.

8.  Set the pump’s outlet pressure to within the respirator’s approved pressure 

range by adjusting the THROTTLE vALvE (10).

Relief valve

Lock nut

Summary of Contents for Free-Air ADP3CA

Page 1: ...sured at all times to workers wearing Type C or CE continuous flow airline respirator hoods or tight fitting half or full face masks The ambient air is filtered through a medium efficiency inlet air f...

Page 2: ...atory protection is enhanced when air flow available to the respirator wearer is above the NIOSH required minimums Model ADP3CA Pump Performance Table Incoming Drive Air Pressure Maintained at 95 psig...

Page 3: ...e with this pump contact Bullard s customer service department at 877 bullard 3 Airline respirators used withthis pump must not be worn in any atmosphere immediately dangerousto life or health or from...

Page 4: ...ed to below see the list of pump components to the left Assembling the Free Air Pump 1 Remove assembly from plywood shipping board and attach four rubber feet through four holes in skid 2 Install stan...

Page 5: ...p is equipped with a 2 ft stand pipe to keep the intake away from the air motor exhaust port If the inlet filter cannot be placed at a source of clean breathable air install Bullard s 50 foot Inlet Ex...

Page 6: ...ER 1 from the Inlet PIPE 2 If the motor speeds up or the outlet pressure shown on GAUGE 5 increases the filter needs replacement 2 Flush PUMP if necessary Should dirt foreign particles moisture or oil...

Page 7: ...be defective subject to the following limitations a Free Air Pump must be returned to the Bullard factory with shipping charges prepaid b Free Air Pump must not have been misused subjected to negligen...

Page 8: ...aterials Bullard may refuse to accept the return of any product suspected of being contaminated 4 Products returned including those under warranty must be shipped with all transportation charges prepa...

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