HP Hickory Rotisseries 45WDG PLUS - Manual (Page 12)

Hickory Industries, Inc.
4900 Westside Avenue, North Bergen, New Jersey 07047
Tel: [201] 223-0050 Fax: [201] 223-0950
N/45 Series Manual12/00
Page 12 of 38
1.10 Checking the Connected Gas Pressure (Nominal Pressure)
Close the gas cock where the gas line is connected to the machine and attach a manometer
to the tap (allen screw) on the gas cock. With the manometer connected, open the gas
cock, ignite all burners, and set the manifold valves to "on" or maximum setting. Along with
all other gas appliances at the location in operation, measure the gas pressure.
This nominal pressure should be 5.5" W.C. for natural gas and 11" W.C. for LPG.
If the measured pressure falls below the range mentioned above, the installer should try to
find the cause of the problem and resolve it. A typical source of this problem is that the gas
line (pipe) diameter leading up to the unit is too small. If it is not possible to resolve the
problem, the local gas company or gas supplier should be contacted so that they can resolve
the problem.
If the nominal pressure is below 5.5 " W.C. for natural gas or below 11 " W.C. for LPG, the
unit should not be operated. These should be adjusted to the ideal settings using the pressure
regulating screw on the pressure regulator.
If the pressure is too high and can not be adjusted downward, check to see if the proper
adjusting spring is in place. If this is correct, the regulator membrane may have been
ruptured by excessive gas pressure and may have to be replaced. Do not operate the
rotisserie if the gas pressure is too low.
If the pressure is too low and can not be adjusted upward, also check the regulator. If this is
correct, verify the pressure coming out of the main gas meter or the diameter of the gas pipe
feeding gas to the unit. If the gas line is under-sized, the appropriate pressure may not be
reached. Do not operate the unit if the pressure falls below 5.5" W.C.
After the pressure has been set, close the gas cock once again, remove the manometer, seal
the pressure regulator, and then re-open the gas cock.
WARNING: After an installation, repairs, or maintenance, make sure that there are
no gas leaks anywhere in the gas lines or system.
1.11 Maintenance, response to technical problems, reasons for problems and solutions
Should a technical problem arise for any reason, shut off the machine and call for technical
service.