Bearcat BC-502/CRC, Instruction Manual

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Alternate Method: Clearing with a Torch
WARNING: CLEARING A SPRAY BAR WITH A TORCH CREATES A
POTENTIAL FIRE HAZARD. TO AVOID SEVERE BURNS,
INJURY OR DEATH DO NOT BEGIN THIS PROCEDURE
WITHOUT A DRY CHEMICAL FIRE EXTINGUISHER
AVAILABLE. MAKE SURE THAT THE TORCH FLAME IS KEPT
WELL AWAY FROM ALL HOSES AND AIR CYLINDER
a. Manually open all of the spray valves on the bar. Use a wrench if
necessary but apply force as gently as possible to avoid damaging
the valve linkage.
b. Apply heat with the torch to the underside of the spray bar,
moving the torch back and forth until asphalt flows from the spray
nozzles. BE SURE TO KEEP THE FLAME WELL AWAY FROM HOSES
AND AIR CYLINDERS.
c. Continue heating the bar until asphalt flows from the nozzles and
then stops, indicating that the bar has been cleared of all material.
Clear Clogged Spray Nozzle
If asphalt does not flow from a single nozzle, the blockage is in the nozzle.
Remove it with a wrench and clear the obstruction by pushing a wire
through the nozzle. If asphalt continues to flow when the valve is
commanded to close, the blockage is in the valve seat area. Run the
pump in REVERSE to remove material from the valve.
WARNING: THE PUMP MUST BE IN REVERSE WHEN REMOVING THE
NOZZLE VALVE BUSHING. FAILURE TO PUT THE PUMP IN
REVERSE COULD RESULT IN BURNS, SEVERE INJURY OR
DEATH.
If running the pump in reverse does not clear the obstruction and restore
the valve to proper functioning, the nozzle valve bushing must be
removed, and the valve must be cleared manually.
Clean Asphalt Intake Strainer
The intake strainer is located behind Valve A. Clean it daily or as needed.
The easiest time to clean the strainer is just after flushing the spray bar.
a. Be sure pump is turned off.