Winco HPS9000E - Manual (Page 7)

Page 5 60707-112 HPS 12/97
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.
Temp 60 deg f. 30 deg f. 0 deg f. -20 deg f.
HPS6000HE 40 gal 50 gal 125 gal 350 gal
HPS9000E 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.
BASIC OPERATION
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.
3. Visually for loose parts.
STARTING
The throttle control on these generators is preset and
locked to operate at 3600 RPM (nominal) with no load
speed set at 3750 RPM. Only a trained service technician
should be allowed to adjust this speed setting. See
“Operating Speed” section for additional information.
NOTICE: ENGINE START LOCKOUT
This unit will not start if it is low on oil. The lubricating oil
level must be at the full mark before the engine will start.
MANUAL STARTING - Refer to the engine manual for
additional starting, operating, and stopping instructions.