DYNA SERIES 5/97
Page 6
60707-110
DANGER: PERSONAL INJURY
Do not use galvanized pipe in the fuel line runs. The
galvanized coating will become eroded and flake off,
causing possible obstruction or damage to the regulator
or fuel valve. The obstruction could cause an
inoperative engine or an explosive fuel leak.
Size of pipe required for generators operating on natural gas/
LP gas.
Length of Fuel Line
Fuel Line Size
less than 25 feet
3/4 inch black pipe
25 to 100 feet
1 inch black pipe
over 100 feet
not recommended
*allow an additional 3 feet for each standard elbow. Do not
use ‘street ells’ (restrictive)
DANGER! - FIRE - PERSONAL INJURY -
Be careful when sealing gas joints. Excessive sealing
compound can be drawn into the solenoid, regulator or
carburetor causing an engine malfunction or dangerous
fuel leak.
FUEL PRESSURE
Correct fuel pressure cannot be stressed enough. The most
common cause for inoperative systems is an inadequate or
incorrect fuel pressure. Power and performance of the
engine is in direct relation to the correctness of the fuel
system. Shown below is a block diagram of a typical L.P. or
N.G. installation.
Reference numbers 1 through 4 in the block diagrams above
are fuel lines supplied by customer.
Reference number 5 is already installed on your engine
generator set.
Remember that whichever fuel delivery system or type of
vapor fuel used, the fuel pressure at the demand regulator
installed on the engine generator must be between 4 and 6
oz. (7-11 inches of water column). Any lower pressure and
the unit will starve for fuel under load. Any higher and the unit
will ‘flood’ when attempting to start.
LP TANK SIZING
Once above the minimum acceptable size, the size of L.P.
tank used will generally depend on how long you want the
unit to run without refilling. The tank sizes shown below are
the smallest recommended tank sizes based on the outside
temperature. Keep in mind the colder it gets the slower L.P.
will vaporize. This is the reason for the larger tanks at low
temperature. Minimum sizing is not based on running time.
BASIC OPERATION
Temp
60 deg f.
30 deg f.
0 deg f.
-20 deg f.
DL6000TFE
40 gal
50 gal
125 gal
350 gal
DL9000TFE
70 gal
80 gal
200 gal
700 gal
CHANGING FUEL TYPES
These engine generator sets are designed to run on three
different fuels; gasoline, natural gas or LP vapor. They
may be easily changed from one fuel to another.
FROM GASOLINE TO LP/NG
1. With the engine running turn off the gasoline
fuel valve.
2. Run the engine until it runs out of fuel.
3. Remove the pipe plug from the demand
regulator.
4. Install locally approved flexible fuel line.
5. Connect the LP/NG vapor fuel line.
6. Turn on the vapor fuel.
7. Start the engine.
8. Apply the load to the generator.
9. Adjust the fuel mixture valve to smooth the
engine out.
Note: Operating on LP/NG vapor fuel for an extended
period of time without liquid fuel in the carburetor may
damage the carburetor float, and the needle seat
assembly. If you plan to convert back to gasoline, we
recommend the float and needle seat assembly be
removed from the carburetor. (Consult a local engine
supplier for assistance.)
FROM LP/NG TO GASOLINE
1. With the engine running turn off the LP/NG fuel
supply.
2. Run the engine until it runs out of fuel.
3. Remove the flexible fuel line from the demand
regulator.
4. Reinstall the pipe plug in the regulator. (use
thread sealant sparingly)
5. Check to be sure the gasoline fuel valve is off.
6. Fill the gasoline fuel tank.
7. Turn on the gasoline fuel valve.
8. Start the engine.
9. Adjust the load jet on the carburetor as
required to smooth the engine out.
Optional Dolly Kit
An optional dolly kit is available for this engine generator
set. The dolly kit comes with instructions and parts list.
After installing the dolly kit, file the instructions and parts list
in the back of this manual for future reference.
INITIAL START UP
Use the following checklist to verify the correct preparation
of the engine generator before starting.
Before Starting always Check:
1. Engine oil, fill as required with correct grade and
quantity.
2. Fuel level, fill as required with clean fresh fuel.
