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9
Troubleshooting Guide
If your Bullard Free-Air pump is not working satisfactorily, follow the
Trouble Shooting steps below:
SYMPTOM: Pump Fails to Start or Hums
1. Turn pump switch off and disconnect from the power source.
2. Check for the correct electrical current as shown in the Electric
Motor Specifications on page 5 of this Manual.
3. Check to be sure that the circuit is not overloaded by the pump and
other electrical equipment. The pump is equipped with a thermal
overload protector that turns the current off when subjected to
electrical overloads.
4. Wait 15 minutes and restart.
SYMPTOM: Outlet Air Pressure Too low
1. Be sure you know the proper pressure range for the respirator. See
the respirator’s instruction manual.
2. Be sure the respirator and air supply hose are connected to the
pump when the gauge reading is taken.
3. Check to see that the pressure gauges are functioning properly.
Replace the gauge(s) if broken or malfunctioning.
4. Check that both the inlet filters (Cat. No. 23611) and outlet filter
cartridges (Cat. No. S17101) are clean. Replace if necessary. Dirty
filters will restrict air flow.
5. Check to see that no air is escaping from the pressure relief valves
on the manifold and air supply hose pod(s). Reset the relief valves
if necessary.
6. Check to see that the air supply hose pod Kamlok couplers are
closed tightly so that no air can escape.
7. Flush the pump with Loctite Safety Solvent (Cat. No. S17931) to
remove excessive dirt, sand, particles, moisture or oil in the rotor
assembly. See the Maintenance section on page 8 for proper
directions on flushing the pump.
When the parts are reassembled, attach the respirator(s) and turn
the pump on, monitoring the outlet pressure.
SYMPTOM: Outlet Pressure Too High
1. If pressure relief valve(s) are set too high, reset to a lower pressure.
Be sure the outlet pressure remains in the approved range for the
respirator as specified by the respirator manufacturer. See your
respirator manufacturer’s instruction manual.
2. Check the respirator’s air supply hose for kinks.
SYMPTOM: Pump Overheating
1. The normal output air temperature when the pump is running
continuously is 160-120 degrees. The heat is dissipated as it
travels through the respirator’s air supply hose until it reaches
ambient air temperature.
2. If pressure relief valves are set too high, reset to a lower pressure.
Be sure the outlet pressure remains in the approved range for the
respirator as specified by the respirator manufacturer. See your
respirator manufacturer’s instruction manual.
3. Check to see that the inlet filters (Cat. No. 23611) and the outlet
filters (Cat. No. S17101) are clean and replace if necessary. Dirty
filters will restrict air flow and cause overheating.
4. Flush the pump with Loctite Safety Solvent (Cat. No. S17931) to
remove excessive dirt, sand, particles, moisture or oil in the rotor
assembly.
See the maintenance section on page 8 for proper directions on
flushing the pump. When the parts are reassembled, attach the
respirators and turn the pump on, monitoring its performance for
overheating.
5. The electrical circuit to which the pump is connected is overloaded.
Check the amperage load of the circuit and disconnect other elec
trical equipment, if necessary, from the circuit.
SYMPTOM: Outlet Air Temperature Too Warm
1. Be sure that at least the first 50 feet of air supply hose closest to
the pump is laid out (not coiled) to permit excess heat to dissipate
from the hose.
2. If using an EDP30 and Bullard supplied air respirator hoods, order
the FRIGITRON 2000 Air Conditioner. Two hoods with FRIGITRON
Air Conditioners can be used with model EDP30. Frigitron 2000
cannot be used with model EDP50.
3. Put a coiled section of the air supply hose in the bottom of a large
container. Fill the container with water and ice and cover with a lid. For
best results, locate the container as close to the worker as possible.
SYMPTOM: Outlet Air Temperature Too Cold
1. Let the pump warm up for approximately 15 minutes before using.
2. Coil the first 25-50 feet of air supply hose closest to the pump.
3. Keep the air supply hose off cold surfaces.
SYMPTOM: Moisture In Air Supply Hose line
1. Locate the air inlet filter in a dry, clean air location, where
breathable air can be assured at all times.
2. With the air supply hose connected to the pump, but not the respi-
rator, turn the pump on and let it run for approximately 15 minutes
to purge the hose of excessive moisture.
IF THESE STEPS FAIl TO RESOlVE THE PROBlEM,
CONTACT YOUR BUllARD DISTRIBUTOR OR BUllARD’S
CUSTOMER SERVICE DEPARTMENT AT 877-BUllARD
OR 1-859-234-6616.
Troubleshooting
Free-Air® Pumps
User Manual
