Guardian Technologies 02010-2 Manual De Usuario

  

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When installing an LP gas system, consider seriously 
the following items:

All fittings, lines, hoses and clamps must be 

tight and free of leaks. Apply a pipe sealant to 
threads when assembling threaded connections. 
This reduces the possibility of leakage.

Test the entire fuel system for leaks using approved 

test methods.

Optimum gas pressure at the inlet to the gaseous 

fuel solenoid valve and secondary regulator is 11 
inches water column.

The installer’s fuel supply connection point is at 

the gaseous fuel solenoid valve. This is a 3/4-inch 
(female) connection. Provide a suitable 3/4-inch 
NPT (male) connector to attach to the fuel supply 
line.

Use a length of approved flexible fuel hose between 

the gaseous fuel solenoid valve and rigid gas pip-
ing. The flexible line should be at least six (6) 
inches longer than necessary.

LP gas is stored in pressure tanks as a liquid. The 
gas systems used with these generators were designed 
only for vapor withdrawal type systems.  Vapor with-
drawal systems use the gas vapors that form above 
the liquid fuel in the tank. Do NOT attempt to use the 
generator with any liquid withdrawal type system.

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Gas pressure delivered to the solenoid valve must be 
properly regulated by means of a primary gas regu-
lator. Mount the primary regulator at the gas tank 
outlet or in the supply line from the gas tank. The 
following rules apply:

For best results, the primary regulator supplies 

gaseous fuel to the secondary regulator at 11 
inches water column. Do NOT exceed 14 inches 
water column.

The installer must be sure the primary regulator is 

rated at sufficient gas flow to operate the generator 
plus all other gas appliances in the circuit.

NOTE:

Recommended MINIMUM gas flow rate for all air-
cooled generators is 67 cubic feet per hour.

If an existing primary gas regulator does not have 
a sufficient flow capacity for the generator and 
other gas appliances in the circuit, (a) install a 
primary regulator with adequate flow rate, or (b) 
install a separate regulator only and rated at least 
67 cubic feet per hour. The inlet side of any pri-
mary regulator that supplies the generator must 
connect directly to a gas pressure tank. Do NOT 
tee the generator line into a gas circuit feeding 
other areas.

LP gas vapors should be supplied to the secondary 
regulator inlet at about 11 inches water column (posi-
tive pressure). The engine pistons draw air in dur-
ing the intake stroke (Figure 2.16). This air passes 
through a carburetor venturi, which creates a low 
pressure that is proportional to the quantity of air 
being pumped. The low pressure from the carburetor 
venturi acts on the regulator diaphragm to pull the 
diaphragm toward the source of low pressure. A lever 
attached to the diaphragm opens a valve to permit 
gas glow through the carburetor.

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