Crown Verity CCB-60 - Manual (Page 18)

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FREQUENTLY ASKED QUESTIONS ABOUT MCB’S
Q. My charbroiler works great when it’s completely lit but I have problems getting all the
burners to light. Do I have a gas leak in the system causing the flow-limiting device to
activate?
A. Not likely. Make sure all burner valves (including pilot valve) are OFF (clockwise). Open
the LP cylinder valve. Wait 15 seconds before attempting to light pilot. This will allow the
pressure in the gas piping system to equalize and will allow the flow-limiting device to
reset itself. The device will activate every time the cylinder valve is opened to a non-
pressurized piping system, and it takes a few seconds to re-set itself before it can handle
the large amounts of gas required to run an MCB. Remember: when this device
activates it still allows a small amount of gas to pass through (enough to run the pilot
tube and one burner adequately). The reason the flow-limiting device activates is because
when an LP cylinder valve is opened to a non-pressurized piping system, the rate of gas
flow exceeds (for a split second) the capacity of the device. All MCB piping systems will
equalize within 15 seconds prior to lighting attempts. However, if a burner or pilot valve
is left open, the device cannot reset itself because it has no back-pressure with which to
do so.
Q. My charbroiler takes forever to light. Why is that?
A. The piping system fills with air when cylinders or supply hoses are disconnected, and it
takes some time to bleed the air out of the system through the small pilot orifice holes.
Be patient.
Q. How long will my L.P. cylinder last?
A. Good question, the formula used to calculate this accounts for only two thirds of the
cylinder’s capacity. Not to say that MCB’s won’t work after the first two thirds of the
propane are used up, but that the pressure in the cylinder begins to drop significantly at
that level. Using this formula, With a twenty pound cylinder (full) and using the average
maximum input (amount of gas used) for MCB’s. We came up with an average cylinder
life of 3 to 3-1/2 hrs.
CROWN VERITY INC., 37 ADAMS BLVD., BRANTFORD, ON. CAN. N3S 7V8
TEL: (519) 751-1800 FAX: (519) 751-1802
www.crownverity.com
Email: [email protected]