Winco PSS20000 User Manual
PACKAGED
STANDBY
SYSTEM
INSTALLATION AND OPERATORS MANUAL
PSS8000
PSS12000
PSS20000
Model PSS8000
Automatic Transfer
Switch
Read and understand all instructions in the
manual before starting and operating the
generator set.
USING THIS MANUAL
Congratulations on your choice of a Winco generator set.
You have selected a high-quality, precision-engineered
generator set designed and tested to give you years of
satisfactory service.
To get the best performance from your new engine
generator set, it is important that you carefully read and
follow the operating instructions in this manual.
Should you experience a problem please follow the
“Things To Check” near the end of this manual. The
warranty listed in this manual describes what you can
expect from WINCO should you need service assis-
tance in the future.
TABLE OF CONTENTS
INTRODUCTION i
GUIDE TO PRODUCT SAFETY 1
BASIC INFORMATION 2
Description 2
Specification Table 3
PREPARING THE UNIT 3
Unpacking the Unit 3
ENGINE GENERATOR INSTALLATION 4
Installation 4
Fuel Installation 4
Vapor Fuel Pressure Tables 5
Liquid Withdrawal 6
Fuel Adjustments 6
Fuel Conversions 6
Lubrication 7
Battery Installation 7
TRANSFER SWITCH INSTALLATION 8
AC Electrical Connections 9
DC Electrical Connections 11
Exerciser Clock Set Up 11
INITIAL START-UP 12
PROPER USE AND INSTALLATION
You must be sure your new engine generator set is:
* Properly serviced before starting
* Operated in a well ventilated area
* Properly exhausted and gases safely dispersed
* Wired by a qualified electrician
* Operated only for its designed purposes
* Used only by operators who understand its operation
* Properly maintained
COPY YOUR MODEL AND SERIAL
NUMBER HERE
No other WINCO generator has the same serial number
as yours. It is important that you record the number and
other vital information here. If you should ever need to
contact us on this unit it will help us to respond to your
needs faster.
MODEL____________________________________
SERIAL NUMBER____________________________
PURCHASE DATE____________________________
DEALER___________________________________
DEALER PHONE # ___________________________
TROUBLESHOOTING INFORMATION 13
WIRING DIAGRAMS
ATS PANELS 16
PSS8000 AC & DC Schematic 17
PSS12000 AC Schematic 18
PSS12000 DC Schematic 19
PSS20000 AC Schematic 20
PSS20000 DC Schematic 21
ATS Dimensions 22
PSS8000 Layout 22
PSS12000 Layout 23
PSS20000 Layout 23
MAINTENANCE LOG 24
12 MONTH WARRANTY 25
PAGE i
SAFETY INFORMATION
This engine generator set has been designed and
manufactured to allow safe, reliable performance.
Poor maintenance, improper or careless use can result
in potential deadly hazards; from electrical shock,
exhaust gas asphyxiation, or fire. Please read all
safety instructions carefully before installation or use.
Keep these instructions handy for future reference.
Take special note and follow all warnings on the unit
labels and in the manuals.
b. Keep fuel containers out of reach of children.
c. Do not smoke or use open flame near the
generator set or fuel tank.
d. Keep a fire extinguisher nearby and know its
proper use. Fire extinguishers rated ABC by
NFPA are appropriate.
e. Store fuel only in an approved container, and only
in a well-ventilated area.
f. Follow local codes for closeness to combustible
material.
ANSI SAFETY DEFINITIONS
************************************************************
DANGER:
DANGER indicates an imminently hazardous situation
which, if not avoided, will result in death or serious
injury. This signal word is to be limited to the most
extreme situations.
***********************************************************
************************************************************
WARNING:
WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
***********************************************************
***********************************************************
CAUTION:
CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe
practices.
************************************************************
NOTE:
CAUTION is also used on the unit labels and in this
manual to indicate a situation that could result in
serious damage or destruction of the equipment and
possible personal injury.
1. ELECTRIC SHOCK - The output voltage present in
this equipment can cause a fatal electric shock. This
equipment must be operated by a responsible person.
a. Do not allow anyone to operate the generator
without proper instruction.
b. Guard against electric shock.
c. Avoid contact with live terminals or receptacles.
d. Use extreme care if operating this unit in rain or
snow.
e. Use only three-prong grounded receptacles and
extension cords.
f. Be sure the unit is properly grounded to an
external ground rod driven into the earth.
2. FIRE HAZARD - Natural gas and L.P. present a
hazard of possible explosion and/or fire.
a. Do not refuel when the engine is running or hot.
Allow the engine to cool at least two minutes
before refueling.
3. DEADLY EXHAUST GAS - Exhaust fumes from any
gasoline engine contain carbon monoxide, an invisible,
odorless and deadly gas that must be mixed with fresh
air.
a. Operate only in well ventilated areas.
b. Never operate indoors.
c. Never operate the unit in such a way as to allow
exhaust gases to seep back into closed rooms
(i.e. through windows, walls or floors).
4. NOISE HAZARD - Excessive noise is not only tiring,
but continual exposure can lead to loss of hearing.
a. Use hearing protection equipment when working
around this equipment for long periods of time.
b. Keep your neighbors in mind when permanently
installing this equipment.
5. CLEANLINESS - Keep the generator and surrounding
area clean.
a. Remove all grease, ice, snow or materials that
create slippery conditions around the unit.
b. Remove any rags or other material that could
create potential fire hazards.
c. Carefully clean up any gas or oil spills before
starting the unit.
d. Never allow leaves or other flammable material to
build up around the engine intake or exhaust area.
6. SERVICING EQUIPMENT - All service, including the
installation or replacement of service parts, should be
performed only by a qualified technician.
a. Use only factory approved repair parts.
b. Do not work on this equipment when fatigued.
c. Never remove the protective guards, cover, or
receptacle panels while the engine is running.
d. Use extreme caution when working on electrical
components. High output voltages from this
equipment can cause serious injury or death.
e. Always avoid hot mufflers, exhaust manifolds, and
engine parts. They all can cause severe burns
instantly.
f. Installing a generator set is not a “do-it-yourself”
project. Consult a qualified, licensed electrician or
contractor. The installation must comply with all
national, state, and local codes.
PAGE 1
TESTING POLICY:
2) ENGINE/GENERATOR
Before any generator is shipped from the factory, it is fully
checked for performance. The generator is loaded to
its full capacity, and the voltage, current, and frequency are carefully checked.
Rated output of generators is based on engineering tests
of typical units, and is subject to, and limited by, the
temperature, altitude, fuel, and other conditions
specified by the manufacturer of the applicable
engines.
INTRODUCTION AND DESCRIPTION
The package standby system includes all items necessary
for a completely automatic standby power system as
standard equipment.
DESCRIPTION
This packaged standby system is designed to automati-
cally provide standby power to unattended loads
during electrical outages. Upon an interruption of
normal electrical service the packaged standby
systems electrical control circuits will automatically
start the engine. The generator will produce electrical
power and the Automatic Transfer Switch (A.T.S.) will
automatically transfer the electrical loads to the
engine-generator set. Upon restoration of normal
electrical service the emergency transfer switch will
sense return of the normal commercial power. The
Automatic Transfer Switch will retransfer the load back
to normal commercial power source. The engine
control circuits will begin a cool-down cycle, after
which the fuel supply will be shut off and the engine
ignition system disabled.
These packaged standby systems consist of two major
components:
1) AUTOMATIC TRANSFER SWITCH
A wall mounted Automatic Transfer Switch (A.T.S.)
designed for inside installation. The A.T.S. consists of
a line side contactor and a generator side contactor.
The contactors are both electrically and mechanically
interlocked. An automatic taper battery trickle charger
(40 MA max.) and a seven day electronic exerciser
clock are installed in the A.T.S. as standard equipment. The A.T.S. also contains the power failure
sensing circuitry necessary to send a start/stop signal
to the engine generator set.
Standard Automatic Transfer Switch Sizes
UNIT LINE SIDE GENERATOR
CONTACTOR SIDE CONTACTOR
PSS8000 100 AMPS 50 AMPS
PSS12000 100 AMPS 100 AMPS
PSS20000 225 AMPS 100 AMPS
Optional A.T.S. sizes are available to meet specific needs.
If you need a switch of a different size contact WINCO,
Inc.
PSS8000 - The engine generator set consists of a Briggs
& Stratton Vanguard, two cylinder, air cooled engine
equipped to run on L.P. or N.G. fuel. The engine
operates at 3600 rpm and frequency regulation is
maintained by the engine governor within 4 cycles
variation (62.5 Hz - 58.5 Hz) from no load to rated
load. The 8000 watt (8kW) generator is a brushless,
single bearing, direct drive, rotating field design. The
generator is connected to the engine’s tapered (quill)
crankshaft extension. The engine generator is
mounted in a NEMA 3R enclosure for outside installation. Connection boxes are provided for all customer
connections (both AC output and DC control). A
customer supplied 235 CCA (BCI group U1) battery is
required to complete the installation. Engine operation
is controlled by an Electronic Engine Control Module
(E.C.M.) mounted in the engine generator enclosure.
The E.C.M. is equipped standard with a 10 second
start delay, 90 second cool down delay and cycle
cranking.
PSS12000 - The engine generator set consists of a Onan
Performer, two cylinder, air cooled engine equipped to
run on L.P. or N.G. fuel. The engine operates at 3600
rpm and frequency regulation is maintained by the
engine governor within 4 cycles variation (62.5 Hz -
58.5 Hz) from no load to rated load. The 12000 watt
(12kW) generator is a single bearing, direct drive,
rotating armature design with external voltage regulation. The generator is connected to the engine’s
tapered (quill) crankshaft extension. The engine
generator is mounted in a NEMA 3R enclosure for
outside installation. Connection boxes are provided
for all customer connections (both AC output and DC
control). A customer supplied 450 CCA (BCI group 26/
70) battery is required to complete the installation.
Engine operation is controlled by an Electronic Engine
Control Module (E.C.M.) mounted in the engine
generator enclosure. The E.C.M. is equipped standard with a 10 second start delay, 90 second cool
down delay and cycle cranking.
PSS20000 - The engine generator set consists of a Ford
Industrial, four cylinder, water cooled engine equipped
to run on L.P. or N.G. fuel. The engine operates at
3600 rpm and frequency regulation is maintained at
60Hz, by an electronic governor mounted on the
engine. The 20,000 watt (20kW) generator is a single
bearing, direct drive, rotating armature design. The
generator is connected to the engine flywheel via a
flexible drive disk. The engine generator is mounted in
a water tight enclosure for outside installation. Connection boxes are provided for all customer connections (both AC output and DC control). A customer
supplied 500 CCA (BCI group 24) battery is required to
complete the installation. Engine operation is controlled by an Electronic Engine Control Module
(E.C.M.) mounted in the engine generator enclosure.
The E.C.M. is equipped standard with a 10 second
start delay, 3 minute cool down delay and cycle
cranking consisting of five, 12 second on/12 second off
cycles.
PAGE 2
** NOTICE **
This unit will automatically transfer if a power outage
occurs while running in an exercise mode.
SPECIFICATIONS
GENERATOR
MODEL WATTS* VOLTS AMPS* HZ pH RPM
PSS8000 8,000 120/240 33.3 60 1 3600
PSS12000 12,000 120/240 50.0 60 1 3600
PSS20000 20,000 120/240 83.0 60 1 3600
PSS20000-4 20,000 120/208 55.6 60 3 3600
PSS20000-17 20,000 120/240 48.1 60 3 3600
*Derate 10% for Natural Gas operation. Derate 3.5%
per 1000 feet elevation above sea level.
FUEL CONSUMPTION
The rated power of each engine-generator is limited by
the temperature, altitude and all other ambient
conditions specified by the engine manufacturer.
Engine power will decrease 3-1/2% for each 1000 ft.
above sea level, and will decrease an additional 1%
for each 10 degrees Fahrenheit above 60 degrees
Fahrenheit.
UNPACKING INSTRUCTIONS
** NOTICE **
When unpacking the generator set, be sure to inspect it
carefully for freight loss or damage. If loss or damage
is noted at the time of delivery, require that the person
making the delivery make note of the loss or damage
on the freight bill, or affix his signature under the
consignor’s memo of the loss or damage. Contact the
carrier for claim procedures.
NG L.P. VAPOR
1000 BTU/CU FT 2520 BTU/CUFT
MODEL CF/HR BTU/HR #/HR* GAL/HR CF/HR BTU/HR*
PSS8000 200 200,000 11.4 2.7 97.6 246,000
PSS12000 245 245,000 13.9 3.3 119 301,000
PSS20000 325 325,000 16.8 4.0 142 366,000
*Based on full load operation
L.P. TANK SIZING
Required L.P. Tank size for L.P. Vapor withdrawal
operating at various outside temperatures given in
degrees Fahrenheit (Celsius)
TANK TEMPERATURE
MODEL 60 f(16 c) 32 f(0 c) 0 f(-18 c) -20 f(-29 c)
PSS8000 150 Gal. 150 Gal. 250 Gal. 500 Gal.
PSS12000 150 Gal. 250 Gal. 500 Gal. 1000 Gal.
PSS20000* 250 Gal. 500 Gal. 500 Gal. 1000 Gal.
* Fuel tank sizes for PSS20000 on liquid withdrawal are
considerably smaller consult your local fuel supplier.
ENGINE SPECIFICATIONS:
Refer to engine operating and maintenance instructions.
** NOTICE **
Regarding Engines - This manual covers the generator
portion of these units. See the separate engine
instruction manual for engine-related problems,
detailed engine information and engine warranty.
When loss or damage is noted after delivery, segregate
the damaged material, and contact the carrier for claim
procedures. Be sure to retain the packaging material
for carrier inspection.
“Concealed Damage” is understood to mean damage to
the contents of a package which is not in evident at
the time of delivery by the carrier, but which is
discovered later. The carrier or carriers are responsible for merchandise lost or damaged in transit. The
title to goods rests with the consignee when generators are shipped F.O.B. factory, and only the consignee can legally file a claim.
**** CAUTION ****
The PSS8000 and PSS12000 are shipped without oil.
The PSS20000 is shipped with oil, and a 50/50 mix of
coolant. Be sure to check all fluid levels before
operating. See engine manufacturer’s instruction
manual for recommended oil requirements before
initial starting.
UNPACKING:
1. Carefully remove the carton.
2. After inspecting the engine-generator and transfer
switch for external physical damage, check for the
following items packed inside the carton.
** CAUTION **
Be sure to check the engine oil level frequently, as
specified in the engine manual.
The engine manufacturer has established an excellent
world-wide engine service organization; engine service
is available from a nearby authorized dealer or
distributor; check the yellow pages of the telephone
directory under “engines,” or ask the dealer from whom
you purchased the power plant.
a. Owner’s manual, wiring diagram and parts list.
b. Engine manufacturer’s instruction manual.
c. USDA approved spark arrestor (PSS8000 only)
3. Remove main frame hold down bolts, (4).
4. Unit can now be lifted from shipping pallet.
PAGE 3
INSTALLATION
FUEL INSTALLATION
General Information
*************
***** WARNING ****
*************
Before proceeding with the installation, be sure the
operation selector switch is in the stop position.
These engine/generator sets are designed to be mounted
on a concrete pad outdoors only. The transfer switch
is mounted next to your electrical entrance or distribution panel inside the building. Consult a qualified,
licensed electrician or contractor to install and wire the
transfer switch. The installation must comply with all
national, state and local codes.
***** CAUTION ****
EQUIPMENT DAMAGE - The PSS20000 must be
mounted on a full length solid concrete pad to prevent
air from exiting under the unit. Allowing air to exit
under the unit may cause the unit to overheat from
lack of proper air flow.
Before beginning the installation process recheck the
rating of the generator set and its transfer switch
rating. Be certain they can handle the intended load
and are compatible with the entrance voltage, phase
and current ratings. Plans for installation should be
prepared with proper attention to mechanical and
electrical engineering detail to assure a satisfactory
system installation. The information in this manual is
offered only as a guide to finalizing your installation
plans.
The fuel supply should be as close as possible to the
engine. This will reduce the installation cost of fuel
runs. The information in this manual is offered to
assist you in providing the proper fuel for your engine.
However, this information is only provided to inform
you of the engine’s requirements and assist in making
you aware of the decisions you must make. In no
case should the instructions or information provided be
interpreted to conflict with any local, state or national
codes. If in doubt, always consult your local fire
marshal or gas supplier.
*************
***** WARNING ****
*************
FIRE HAZARD - All fuel runs should be installed by a
licensed fuel supplier.
Connect the fuel supply to the inlet of the fuel solenoid
(see table for recommended line size). For all vapor
fuel systems the delivery pressure of the fuel to the
fuel solenoid on the unit must be four to six ounces psi
(per square inch) or 7 to 11 inches W.C. (Water
column). PSS20000 equipped with liquid withdrawal
kits must be connected to the liquid withdraw valve on
the tank. Full tank pressure must be delivered to the
3/8” fuel fitting on the fuel lock strainer at the generator. These fuel pressures are critical, failure to
provide the proper fuel pressure can cause many
problems ranging from a unit that will not start to
causing damage to the fuel system.
INSTALLING THE FUEL LINE
** NOTICE **
ENGINE GENERATOR SET MOUNTING
The unit’s main frame should be bolted solid to a four to
six inch thick cement pad. The engine-generator is
mounted on a sub-frame which is isolated with special
shock mounts on the main frame. This allows the
engine-generator to vibrate without affecting the
control panel on the main frame.
Do not install any shock mounts between the base frame
and the concrete pad. Engine vibration will be
transmitted to the control panel causing erroneous
start/stop cycles and premature control failure.
The unit should be mounted to allow for ample working
room around it. A general rule to follow is three (3)
feet clearance on all sides. Particular attention should
be paid to the direction of the hot air discharge and
exhaust discharge. Unit location should be such that
these discharges are not allowed to be drawn back in
through an open window or door.
The engine generator sets are properly adjusted before
they leave the factory. A tag is attached to the unit
that specifies the fuel, natural gas (NG) or propane
vapor (LP) that the unit was set up and tested on. A
slight adjustment may be necessary on NG depending
on local BTU content. This adjustment will be discussed later.
Line Size
Unit location will determine the size of fuel line that is
required to supply the engine with a constant fuel
pressure and volume. Refer to the tables below for
fuel line size, fuel consumption and recommended
tank size. For distances of 50 feet and over, a two
regulator fuel system is recommended. This is
accomplished by installing a primary regulator at the
tank which will reduce the tank pressure down to 10 to
15 lbs. A secondary regulator is installed to further
reduce the fuel pressure to the required four (4) to six
(6) oz operating pressure. This secondary regulator
must be at least 10 feet from the engine generator set,
any closer installation will require a larger line be
installed to provide a fuel reservoir. If this is not done
the demand regulator on the unit and the pressure
PAGE 4
regulator in the fuel line will interfere with each other.
When this two (2) stage regulator system is used, a
fuel line size of 1/2 to 5/8 inch is generally adequate
for distances up to 300 feet from the primary to the
secondary regulator. (Consult your local fuel supplier
for your exact requirements.) The appropriate line size
from the table below is then installed from the second
regulator to the generator set.
*************
***** WARNING ****
*************
PERSONAL DANGER - Do not use galvanized pipe in
fuel line runs. The galvanized coating can become
eroded and flake off, causing possible obstructions in
the regulator or fuel valve. The results could range
from inoperative engine start to hazardous fuel leaks.
SINGLE REGULATOR FUEL SYSTEM
Supply Primary Generator
Tank Regulator Set
1 3 4
Reference numbers 1 through 3 in the block diagrams
above are system parts supplied by customer.
Reference number 4 is the engine generator set.
Below is a table of the fuel pressure reading at each
reference in the system.
Fuel Pressure Table
Size of pipe normally required for generators operating on
NATURAL GAS or LP vapor
up to 25 feet* 25 - 100 feet* over 100 feet*
PSS8000 3/4" pipe 1" pipe not recommended
PSS12000 3/4” pipe 1” pipe use a two
PSS20000 1" pipe 1.25" pipe regulator system
*Allow an additional 3 feet for each standard elbow. Do not use
‘street ells’ (restrictive)*
Size of pipe normally required for generators operating on
LP liquid withdrawal
PSS20000 - 3/8” line for all distances.
**** CAUTION ****
Be careful when sealing gas joints. Excessive sealing
compound can be drawn into the solenoid, regulator or
carburetor causing an engine malfunction.
FUEL PRESSURE
L.P. & N.G. VAPOR FUEL
Correct fuel pressure cannot be stressed enough. The
most common cause for inoperative systems is an
inadequate or incorrect fuel pressure. 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. vapor fuel installation.
Notice the following tables give two (2) different units of
measuring fuel pressure. The first and most accurate
is the use of a simple water manometer. A manometer
is calibrated in inches of water column. The second is
with a pressure gauge calibrated in ounces per square
inch.
TWO (2) REGULATOR FUEL SYSTEM
Single Regulator (L.P. Vapor only)
1 3 4
UNIT OFF TANK PSI 7-11 in 7-11 in
4-6 oz 4-6 oz
STARTING TANK PSI 7-11 in 7-11 in
4-6 oz 4-6 oz
NO LOAD TANK PSI 7-11 in 7-11 in
4-6 oz 4-6 oz
FULL LOAD TANK PSI 7-11 in 7-11 in
4-6 oz 4-6 oz
Two (2) Regulator System (L.P. Vapor only)
1 2 3 4
UNIT OFF TANK PSI 10-15 lbs 7-11 in 7-11 in
4-6 oz 4-6 oz
STARTING TANK PSI 10-15 lbs 7-11 in 7-11 in
4-6 oz 4-6 oz
NO LOAD TANK PSI 10-15 lbs 7-11 in 7-11 in
4-6 oz 4-6 oz
FULL LOAD TANK PSI 10-15 lbs 7-11 in 7-11 in
4-6 oz 4-6 oz
Natural Gas
1 3 4
UNIT OFF LINE PSI 7-11 in 7-11 in
4-6 oz 4-6 oz
STARTING LINE PSI 7-11 in 7-11 in
4-6 oz 4-6 oz
NO LOAD LINE PSI 7-11 in 7-11 in
4-6 oz 4-6 oz
FULL LOAD LINE PSI 7-11 in 7-11 in
4-6 oz 4-6 oz
Supply Primary Secondary Generator
Tank Regulator Regulator Set
1 2 3 4
PAGE 5
LP LIQUID WITHDRAWAL
The following is a block diagram of a typical L/P Liquid
Withdrawal fuel system for the PSS20000.
Tank Fuel Solenoid Converter Engine
1 2 3 4
Reference number 1 is the fuel tank. No regulator is
required but the tank must have a liquid withdrawal
drop tube installed in it and a liquid valve on the tank.
Reference number 2 through 4 are installed on the engine
generator set.
Adjust back and forth until the highest Hz is achieved.
Do not turn the valve richer after the Hz quits rising,
this would cause the engine to run rich. If the Hz is out
of upper or lower limits, a governor adjustment will be
necessary.
4. On the PSS8000 & PSS12000 see your engine
manual for governor adjustment procedures. The
PSS20000 is equipped with an electronic governor
which requires no adjustment.
**** CAUTION ****
Under full load do not adjust the Hz above 60. If a higher
Hz reading is used, as the load is decreased the Hz
will go out of upper limits (61 to 62 Hz).
Liquid fuel is delivered from the tank directly to the fuel
solenoid on the generator at full tank pressure. This
system requires no pressure regulator be installed
any where in the system. The converter mounted on
the engine generator set will take the liquid fuel at tank
pressure and convert it to vapor at the proper delivery
rate.
LP/NG FUEL ADJUSTMENTS
**** CAUTION ****
Do not make any fuel adjustments or governor adjust-
ments until all pressure readings are in compliance
with specification. See fuel pressure charts (tables 1,
2, and 3).
NATURAL GAS (NG)
Due to variations in NG fuel characteristics and BTU
levels throughout the country, it may be necessary to
readjust the fuel mixture once the engine has been
installed and serviced.
**** CAUTION ****
Never make a fuel mixture adjustment on a unit when it is
stopped or running no load. A mixture adjustment is
only effective when the engine is operating under load.
ADJUSTMENT PROCEDURE
1. Insure the unit is operating with an 80 to 100% load or
at the highest anticipated load.
PROPANE (LP)
A generator set factory tested on LP will normally require
no adjustment. If for some unforeseen reason the
machine should require adjustment, follow the NG
procedure.
FUEL TYPE CONVERSION
If it should be necessary to change the type of fuel used
after a unit is received, the following procedures are
provided.
PSS8000
These units require no changes to the regulator. After
plumbing in the fuel lines the only thing necessary is to
reset your mixture as detailed in the adjustment
section above.
PSS12000 & PSS20000
NATURAL GAS TO PROPANE
1. Turn off fuel supply.
2. Remove the fuel line from the carburetor at the
demand regulator.
3. Remove the cap on the upright column of the regulator. This will expose the pressure spring adjusting
screw. Back off the spring adjusting screw so there is
just enough room to replace the cover. Replace the
cover
2. Attach a frequency meter to monitor Hz.
Note: The fuel mixture adjustment on the PSS8000 &
PSS12000 is the brass load block located on top of the
demand regulator. This load block is a multi-turn
needle valve. On the PSS20000 it is located on the
carburetor just behind the fuel inlet hose. This mixture
adjustment is a partial turn, lean to rich, load block.
3. Begin making a mixture adjustment, observing the Hz
meter. If the meter begins to drop you have the mixture
set too lean or to rich . Adjust the valve in the opposite
direction. Adjustments should be made very slowly.
4. Invert the regulator so it is positioned with the column
pointing down.
5. Reconnect the fuel line at the regulator.
6. Remove the 1/8 NPT plug (the one closest to fuel
solenoid) located on what is now the top of the
regulator. Connect a fuel pressure meter or a manometer where the plug has been removed. Move the
generator control switch to the run position. As the unit
starts to crank the fuel solenoid will open and you
should get a pressure reading of between 4 to 6
ounces (7 to 11 inches of water column).
PAGE 6
7. If the pressure is correct, remove the meter and
reinstall the pipe plug.
8. You are now ready to make the final fuel mixture
adjustment. Refer to adjustment section in this manual.
PSS8000 - A customer supplied twelve-volt BCI group U1
battery rated 235 CCA (minimum) is required to
complete the installation. Install the highest CCA rated
battery available for best cold weather starting
performance.
PROPANE TO NATURAL GAS
1. Turn off fuel supply.
2. Remove the fuel line from the carburetor at the
demand regulator.
3. Invert the regulator so the column is in the upright
position. Remove the cap on the upright column of the
regulator. This will expose the pressure spring
adjusting screw. Turn the screw all the way out (CCW)
and then back in (CW) about 8 turns. The plug should
be approximately half way down for initial starting.
4. Reconnect the fuel line at the regulator.
5. Remove the 1/8 NPT plug (the one closest to fuel
solenoid) located on what is now the bottom of the
regulator. Connect a fuel pressure meter or a manometer where the plug has been removed. Move the
generator control switch to the run position. As the unit
starts to crank the fuel solenoid will open and you
should get a pressure reading of between 4 to 6
ounces (7 to 11 inches of water column).
6. If the pressure is correct, remove the meter and
reinstall the pipe plug. Next remove the 1/8 inch NPT
plug on the carburetor side of the regulator and install
the pressure meter. Move the generator switch to the
run position. As soon as the solenoid opens the
pressure should rise 2.5 to 3 oz. just as the engine
starts to crank. If it is within this range replace the cap
on the column. If not, adjust the screw down to
increase and up to decrease and retest.
7. You are now ready to make the final fuel mixture
adjustment. Refer to adjustment section in this manual.
LUBRICATION
PSS12000 - A customer supplied twelve-volt BCI group
26/70 battery rated 450 CCA (minimum) is required to
complete the installation. Install the highest CCA rated
battery available for best cold weather starting
performance.
PSS20000 - A customer supplied twelve-volt BCI group
24 battery rated 500 CCA (minimum) is required to
complete the installation. Install the highest CCA rated
battery available for best cold weather starting
performance.
*****CAUTION*****
EQUIPMENT DAMAGE - Always connect the positive
cable first and the negative cable last, when disconnecting it is negative cable first and positive last.
Failure to connect and disconnect in the proper
sequence can cause equipment damage.
Observe polarities: connect the positive (+) battery
terminal to the (+) cable from the control panel; the
negative (-) battery terminal is connected to the
negative cable (ground) from the engine generator
assembly.
All connections must be clean and tight. Check the
electrolyte (fluid) in the battery periodically to be sure it
is above the plates. Never allow the battery to remain
in a discharged condition.
A self tapering trickle charger, producing up to 40 Ma is
built into the Automatic Transfer Switch panel to keep
the battery in top condition during standby periods. A
small green light on the Transfer Switch cover is
illuminated to indicate the proper operation of the
charger. Since the charger has an automatic charge
regulation circuit, the charger has no control knob and
requires no adjustment.
Before starting the engine, fill the crankcase with the
proper weight/grade of oil, as recommended by the
engine manufacturer’s maintenance instructions. The
necessity of using the correct oil, and keeping the
crankcase full cannot be over emphasized.
INSTALLING THE BATTERY
**** CAUTION ****
In the following battery installation procedure, check to be
sure the selector switch remains in the “stop” position.
This should be your last step before initial start-up.
PAGE 7
** NOTICE **
The trickle charger is not intended to recharge a battery
which has become completely discharged. It is
designed to produce just enough current to maintain a
fully charged battery .
Loading...