Kalamazoo Outdoor Gourmet K500HB, Use And Care Manual

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An Important Note About LP Cylinders
Kalamazoo strongly recommends connecting our grills to a bulk fuel supply
(either bulk liquid propane or a natural gas connection). The BTU rating of our
high performance equipment means that a standard 20-pound liquid propane
cylinder cannot supply enough gas. Gas appliance design and safety standards
do not allow us to configure these grills to operate off dual cylinders or to
supply customers with a cylinder larger than 30 pounds.
We provide a 30-pound cylinder for those customers who cannot connect their grill to a bulk fuel supply.
In testing, a full cylinder effectively supplies a Kalamazoo grill with three primary burners on HIGH for
approximately 3 hours before the safety check valve causes the grill to stop operating.
What is a safety check valve?
Liquid propane cylinders feature a safety device intended to prevent gas from unintentionally flowing from the
cylinder. The device senses the pressure differential related to the flow of gas from the cylinder.
Why does the safety check valve shut down the grill?
When liquid propane is converted from a liquid in the cylinder to a gas to supply the grill, heat is required
for the change. This heat is drawn from the cylinder itself. The more BTUs needed by a grill, the more heat
needed. A 100 pound liquid propane cylinder can easily handle this exchange because of the increased
surface area. A 20 pound liquid propane cylinder cannot. The smaller cylinder will ice over. When it ices over,
the pressure inside the cylinder drops. If the internal pressure in the cylinder drops too far, the safety check
valve detects a small enough pressure differential in the gas flow that it will activate. The activated safety check
valve reduces the gas flow so greatly that it effectively turns off the grill.
What can I do if I have to run off liquid propane cylinders?
Keep a spare, filled cylinder available. When the cylinder in use ices over and the safety check valve kicks in,
switch to the other cylinder to continue cooking.
Where can I get the 30-pound cylinder refilled?
Most equipment rental and many party rental businesses will refill LP cylinders.
WARNING: Even though a safety check valve has been activated, gas is still flowing
through the system. If the burners have extinguished, immediately turn off the LP
cylinder at the master valve on the cylinder. Next, turn off all grill control valves.
Disconnect the regulator from the LP cylinder, then reconnect it. The safety check
valve should now be reset. However, if the cylinder is iced over, it is likely the safety
check valve will soon be triggered again.