WhisperPower W-GV 4 Scalino User manual

USER’S MANUAL
W-GV 4 Scalino genverter OUTDOOR
for mobile and land-based use
V1, April 2017
WHISPERPOWER BV
Kelvinlaan 82
9207 JB Drachten
Netherlands
Tel.: [phone]
Fax: [phone]
www.whisperpower.com
Art.no. 40200841

CONTENTS
2W-GV4 Scalino outdoor —April 2017 —EN
Contents
1INTRODUCTION .......................................................................................................................................................................... 4
1.1 General ................................................................................................................................................................................. 4
1.2 Service and maintenance ..................................................................................................................................................... 4
1.3 Guarantee............................................................................................................................................................................. 4
1.4 Liability ................................................................................................................................................................................. 4
1.5Identification ........................................................................................................................................................................ 4
1.5.1 Identification plate............................................................................................................................................. 4
2INFORMATION............................................................................................................................................................................ 4
2.1 Safety.................................................................................................................................................................................... 4
2.1.1 Warnings and symbols....................................................................................................................................... 4
2.1.2 General .............................................................................................................................................................. 5
2.1.3 Organizational measures ................................................................................................................................... 5
2.1.4 Maintenance & repair........................................................................................................................................ 5
2.1.5 Electrical safety.................................................................................................................................................. 5
2.1.6 Magnetism ......................................................................................................................................................... 5
2.1.7 Operation........................................................................................................................................................... 5
2.1.8 Fire and explosion.............................................................................................................................................. 5
2.1.9 Chemicals........................................................................................................................................................... 6
2.2 Transport, lifting and storage ............................................................................................................................................... 6
2.3 Features................................................................................................................................................................................ 6
2.3.1 General .............................................................................................................................................................. 6
2.3.2 Construction ...................................................................................................................................................... 6
2.3.3 Engine Control Unit............................................................................................................................................ 6
2.3.4 Documentation .................................................................................................................................................. 6
2.4 Main components ................................................................................................................................................................ 7
3TECHNICAL INFORMATION ......................................................................................................................................................... 8
3.1 Parts and relevant functions................................................................................................................................................. 8
3.1.1 Engine ................................................................................................................................................................ 8
3.1.2 AC Permanent Magnet Alternator ..................................................................................................................... 8
3.1.3 Engine Control Unit and DDC............................................................................................................................. 8
3.1.4 Power Module Genverter .................................................................................................................................. 9
3.1.5 Battery charger .................................................................................................................................................. 9
3.1.6 Load indicators................................................................................................................................................... 9
3.1.7 Fuel .................................................................................................................................................................... 9
3.1.8 Lubricating oil .................................................................................................................................................... 9
3.1.9 Oil cooling heat exchanger .............................................................................................................................. 10
3.2 Technical data .................................................................................................................................................................... 11
3.2.1 General ............................................................................................................................................................ 11
3.2.2 Fuel specifications............................................................................................................................................ 13
3.2.3 Lubricating oil specifications............................................................................................................................ 13
3.2.4 Electrical diagrams........................................................................................................................................... 13
4OPERATION .............................................................................................................................................................................. 14
4.1 General ............................................................................................................................................................................... 14
4.2 Optional variable speed mode ........................................................................................................................................... 14
4.3 Operating instructions........................................................................................................................................................ 14
4.3.1 Summarized operating instructions (daily use) ............................................................................................... 14
4.3.2 Extended operating instructions...................................................................................................................... 15
5MAINTENANCE ......................................................................................................................................................................... 17
5.1 Maintenance intervals........................................................................................................................................................ 17
5.2 Alternator ........................................................................................................................................................................... 17
5.3 Engine................................................................................................................................................................................. 17
5.3.1 Preliminary instructions................................................................................................................................... 17
5.3.2 Bleeding fuel lines............................................................................................................................................ 17
5.4 Regular maintenance....................................................................................................................................... 17
5.4.1 Changing oil and cleaning the oil strainer........................................................................................................ 17
5.4.2 Checking the battery........................................................................................................................................ 17
5.4.3 Draining water from the fuel tank ................................................................................................................... 17
5.4.4 Cleaning the external coolant radiator ............................................................................................................ 18

CONTENTS
W-GV4 Scalino outdoor —April 2017—EN 3
5.4.5 Replacing the fuel filter.................................................................................................................................... 18
5.4.6 Air filter element.............................................................................................................................................. 18
5.4.7 Checking hoses and electrical connections...................................................................................................... 18
5.4.8 Retightening cylinder head bolts and adjusting valve clearance ..................................................................... 18
5.5 Putting out of service ......................................................................................................................................................... 19
6TROUBLESHOOTING ................................................................................................................................................................. 20
6.1 General ............................................................................................................................................................................... 20
6.2 Alternator/ electrical faults ................................................................................................................................................ 20
6.2.1 Troubleshooting table for alternator ............................................................................................................... 20
6.3 Engine faults ....................................................................................................................................................................... 20
6.3.1 General ............................................................................................................................................................ 20
6.3.2 Troubleshooting table for engine .................................................................................................................... 20
6.5 Warnings ............................................................................................................................................................................ 23
6.6 Service address................................................................................................................................................................... 23
7SPARE PARTS LIST ..................................................................................................................................................................... 24
Suppliers Declaration of Conformity/Incorporation

INFORMATION
4W-GV4 Scalino outdoor —April 2017 —EN
1INTRODUCTION
1.1 General
This manual serves as a guideline for the safe and effective
operation, maintenance and possible correction of minor
malfunctions of the W-GV4 Scalino manufactured and
marketed by WhisperPower.
It is therefore obligatory that every person who works on or
with the W-GV4 Scalino must be completely familiar with the
contents of this manual, and that he/she carefully follows the
instructions contained herein. Both safety and durability rely
very much on the correct identification, installation and a good
understanding of ratings, features, design, maintenance and
operation procedures.
The information, specifications, illustrations and statements
contained within this publication are given with our best
intentions and are believed to be correct at the time of going to
press.
Our policy is one of continued development and we reserve the
right to amend any technical information without prior notice.
Whilst every effort is made to ensure the accuracy of the
particulars contained within this publication neither the
manufacturer, distributor, or dealer in any circumstances shall
be held liable for any inaccuracy or the consequences thereof.
1.2 Service and maintenance
Regular service and maintenance should be carried out
according to the directions in this manual. For service and
maintenance one can appeal to the manufacturer or the
dealers.
1.3 Guarantee
WhisperPower guarantees that this Genverter has been built
according to good workmanship, according to the specifications
in this manual and according to European Community safety
regulations.
During production and prior to delivery, all of our Genverters
are tested and inspected.
This Genverter’s proper operation is subject to guarantee. The
period and conditions of this guarantee are laid down in the
general conditions of delivery as registered with the Chamber
of Commerce and Industries for the North of the Netherlands
number 01120025 and are available on request. The guarantee
period is two years, limited to 1000 running hours. Some
aspects of our guarantee scheme are given here in more detail:
Guarantee does not cover failures that are caused by misuse,
neglect or a faulty installation.
WhisperPower cannot be held responsible for damage caused
by the unattended running Genverter.
1.4 Liability
WhisperPower does not accept responsibility for damage,
injuries or casualties which are the result of operation of the
Genverter in specific conditions which brings dangers which
could not be foreseen, or could be avoided by additional
measures. WhisperPower does not accept liability for damage
due to use of the Genverter, possible errors in the manuals and
the results thereof.
1.5 Identification
1.5.1 Identification plate
All required identification data are on the identification plate,
providing the following information.
The identity of the Genverter is given by the SERIAL NUMBER.
POWER
The identification plate gives the maximum load in kVA (= kW)
calculated with power factor one. When calculating a load one
should always take into account the power factor or cos phi of
this load. The load should never exceed the nominal power as
shown on the identification plate. Power is rated at an ambient
temperature of 25ºC. For higher temperatures the Genverter
has to be de-rated.
The identification plate also shows the maximum CURRENT that
is acceptable at the specified frequency, voltage and power
factor.
DC VOLTAGE is the voltage of the starter battery.
The (approximate) net dry WEIGHT is shown in kg. This is
without fuel, oil, cooling liquid, packing and external installation
equipment
The CE symbol shows that the Genverter has been built
according to European Community safety regulations. Refer to
EC Declaration of Conformity for more details.
2INFORMATION
2.1 Safety
2.1.1 Warnings and symbols
Safety instructions and warnings are marked in this manual by
the following pictograms, indicating that a piece of equipment,
routine, circumstance, procedure, etc. deserves extra attention:
WARNING
This warning symbol draws attention to special
warnings, instructions or procedures which, if not
strictly observed, may result in damage or
destruction of equipment, severe personal injury
or loss of life.

INFORMATION
W-GV4 Scalino outdoor —April 2017—EN 5
WARNING
This symbol indicates that a potential hazard
exists caused by moving parts and draws
attention to special warnings, instructions or
procedures which, if not strictly observed, may
result in severe personal injury or loss of life.
WARNING
This danger symbol refers to toxic danger caused
by Carbon monoxide (CO) and draws attention to
special warnings, instructions or procedures
which, if not strictly observed, may result in
severe personal injury or loss of life.
DANGER
This danger symbol refers to electric danger and
draws attention to special warnings, instructions
or procedures which, if not strictly observed, may
result in electrical shock which will result in
severe personal injury or loss of life.
2.1.2 General
When correctly installed and used in normal circumstances this
Genverter fulfils EC safety regulations. This Genverter could be
part of an installation or could be used in a way that additional
regulations of the EC or other authorities have to be taken into
account. Refer to the Declaration of Conformity in this manual.
Circumstances could make it also necessary to take additional
measures. Be aware of wet conditions and hazardous
environments caused by explosive gases etc.
2.1.3 Organizational measures
The user must always:
have access to the user's manual;
be familiar with the contents of this manual. This
applies in particular to this chapter, Safety Guidelines
and Measures.
2.1.4 Maintenance & repair
WARNING
When service has to be carried out while the
engine is running, be aware of moving parts.
If the W-GV4 Scalino is switched off during maintenance and/or
repair activities, it should be secured against unexpected and
unintentional switching on:
remove the AC supply;
remove the connection to the batteries;
be sure that third parties cannot reverse the
measures taken.
If maintenance and repairs are required, use original spare
parts only.
Always consult the manual before carrying out maintenance.
2.1.5 Electrical safety
Warning signs indicate parts which could be live.
Check all wiring at least once a year. Defects, such as
loose connections, burned cables etc. must be
repaired immediately.
Do not work on the electrical system if it is still
connected to a current source. Only allow changes in
your electrical system to be carried out by qualified
electricians.
Connection and protection must be done in
accordance with local standards.
2.1.6 Magnetism
WARNING!
The genverter incorporates powerful permanent
magnets. Cardiac patients, especially those living
with a pacemaker, should bear this in mind.
2.1.7 Operation
There are no external moving parts like fans and V-belts. The
hot parts of the engine are covered by the sound shield and
therefore the W-GV4 Scalino is very safe when the sound shield
is closed.
Nevertheless take note of the signs on the Genverter which
show symbols in a triangle indicating danger.
The Genverter should be operated by authorized
personnel only.
Be aware of hot parts and especially parts of the
exhaust system and the cooling system.
If the Genverter is unsafe, fit danger notices and
disconnect the battery positive (+) lead so that it
cannot be started until the condition is corrected.
Do not attempt to operate the Genverter with a
known unsafe condition. Disconnect the battery
positive (+) lead prior to attempting any repairs or
cleaning inside the enclosure.
Always consult the manual before carrying out
maintenance.
Do not change the settings without consulting the
manufacturer. Keep a record of setting changes in this
manual.
2.1.8 Fire and explosion
Fuels can be flammable. Proper handling limits the risk of fire
and explosion.
WARNING
Never use the M-GV4 Piccolo in situations where
there is danger of gas or dust explosion or
potentially flammable products!
Avoid refilling the fuel tank while the engine is
running. When oil or fuel is leaking do not use the
GV4 Scalino.

INFORMATION
6W-GV4 Scalino outdoor —April 2017 —EN
Hydrogen gas possibly generated by batteries being
charged is explosive. Ensure proper ventilation. Do
not smoke or allow sparks, flames, or other sources of
ignition around batteries.
Keep a fire extinguisher on hand.
2.1.9 Chemicals
Fuels, oils, coolants, and battery electrolyte can be
hazardous if not treated properly. Do not swallow or
have skin contact with these liquids. Do not wear
clothing that has been contaminated by fuel or
lubricating oil.
On no account allow any unprotected skin to come
into contact with the injector spray as the fuel may
enter the blood stream with fatal results.
Engines may be fitted with seals or O-rings
manufactured from "Viton" or similar material. When
exposed to abnormal high temperatures in excess of
400°C an extremely corrosive acid is produced which
cannot be removed from the skin. If signs of
decomposition are evident, or if in doubt, always
wear disposable heavy duty gloves.
2.2 Transport, lifting and storage
When lifting the Genverter avoid any risk of personal injuries,
do not stand under the Genverter.
Use soft slings to avoid damage
On the engine is a lifting hoist eye which can be used
to take the Genverter out of the capsule. It can also
be used to lift the complete Genverter including the
capsule.
After transporting the Genverter check for damage
before installation.
Long term storage can have detrimental effects on
engine and alternator. The engine should be put
through an engine preservation procedure. (Refer to
the maintenance chapter).
The alternator windings tend to condense. To
minimize condensation, store the Genverter in a dry
and warm storage area.
Follow the battery manufacturer’s instructions when
storing the battery.
2.3 Features
2.3.1 General
The WhisperPower Genverter combines a small oil cooled
diesel engine, a Permanent Magnet alternator and an Inverter,
making variable speed possible. Variable speed means that the
engine will operate in a specific rpm window without affecting
the 50Hz/60Hz output frequency of the inverter.
The benefit is that the inverter is supplying a stable 230V and
50Hz or 60Hz output while the engine is running as efficiently as
possible. This result in smooth running, reduced vibration,
excellent combustion and substantial fuel savings.
The W-GV4 can be installed with an optional variable speed
control. A stepper motor is installed on the speed throttle of
the engine. The speed is regulated by a signal from the WP-
PMG.
When little power is needed the engine runs at low (2500) rpm,
speeding up to 3600 rpm when a high output is required.
Because of the variable speed the unit operates much more
economically (less fuel consumption). The life time is much
longer than for generators running constantly at high speed and
the noise level is much lower while running at low speed.
2.3.2 Construction
The Genverter incorporates a diesel engine which has a
permanent magnet alternator in the flywheel. The engine is
mounted on a steel base frame and mounted securely on a
double set of anti-vibration mounting pads in a sound
attenuated canopy. The output of the power from the
alternator will be from zero up to 3 phase 250V-400Hz and
400V-500Hz, depending on the engine speed. The separate
Power Module Genverter WP-PMG will invert this output to
230V/50Hz.
2.3.3 Engine Control Unit
The engine control unit incorporated in the Power Module
Genverter is based on microprocessor technology. For detailed
information of the engine control unit refer to the user’s
manual of the WP-PMG.
If DC output is required, the Genverter is installed in
conjunction with a DC PowerCube and engine control is
provided by an external digital diesel control box (DDC). This
takes care of engine operation monitoring and control (refer to
Digital Diesel Control user’s manual for DDC specifications and
possibilities).
The remote control panel including cable comes as standard
with the Genverter.
2.3.4 Documentation
Included in the delivery are:
This user’s manual (number: 40200841).
An installation manual (number: 40200845).
Where a DDC engine control unit is installed:
A DDC operating manual (no. 40200801).
A DDC quick reference guide (no. 40200142).
The user’s manual contains a list of important maintenance and
spare parts as well as a chapter on maintenance and problem
solving. Manuals in other languages are available on request.

INFORMATION
W-GV4 Scalino outdoor —April 2017—EN 7
2.4 Main components

TECHNICAL INFORMATION
8W-GV4 Scalino outdoor —April 2017 —EN
3TECHNICAL INFORMATION
3.1 Parts and relevant functions
The W-GV4 Scalino Genverter is a very advanced high tech
variable speed power supply system. It combines new
technologies from various fields such as engine technology,
Permanent Magnet alternator technology and inverter
technology.
3.1.1 Engine
The engine used in the Genverter is developed by
WhisperPower and manufactured exclusively for
WhisperPower. The concept is unique as the engine is fully
cooled by oil. The same oil that is used for lubrication is also
used for cooling. However the lubrication circuit is separate
from the cooling circuit that has its own pump.
As the cylinder and cylinder head are surrounded by oil the
noise of the engine itself is extremely low. The oil cooling
makes it possible to apply the engine in an almost fully enclosed
canopy, what makes the Genverter even more silent. The oil is
cooled by a relatively small heat exchanger.
One could use the hot oil for generating heat (CHP Combined
Heat Power generation). For this application additional
information can be provided by WhisperPower.
Further details can be found in 3.2.
3.1.2 AC Permanent Magnet Alternator
The Three Phase Permanent Magnet Alternator is incorporated
in the flywheel and has a very high efficiency of 94% or higher
because of the very high tech super magnets that are used. The
output of the power from the alternator will be between 250V-
300Hz and 400V-500Hz, depending on the engine speed. As the
efficiency is very high, little cooling is needed. The alternator
includes a fan that circulates air to cool the windings.
Further technical data on the design of the alternator can be
found in drawings and diagrams in this manual.
3.1.3 Engine Control Unit and DDC
Depending on the Scalino system, the engine control is either
incorporated in the WP-PMG or it is part of an optional DDC
control box.
3.1.3.1 WP-PMG Power Module Genverter
Through the WP-PMG Power Module Genverter, the user can
control and operate the GV4 Scalino.
Figure 1: WP-PMG control panel
By pushing the START button on the PMG control panel (refer
to Figure 1) for two seconds, the control system is activated and
will start the engine automatically. Pushing the STOP button
(again hold two seconds) will stop the engine and the electrical
system will be deactivated.
The PMG control panel also displays information such as output
voltage, AC load and engine diagnostics.
For remote control the WP-PMG Power Module Genverter is
supplied with a remote panel, which combines the start and
stop buttons into a single button. Its operation is basically the
same, though.
Figure 2: Remote control panel for WP-PMG
In addition, the WP-PMG incorporates an extended status
interface input/output module featuring enable/disable,
start/stop, fire shutdown and WhisperConnect CANbus for
advanced diagnostics. These features are explained in the WP-
PMG owner’s manual.

TECHNICAL INFORMATION
W-GV4 Scalino outdoor —April 2017—EN 9
3.1.3.2 Optional Digital Diesel Control System
The optional Digital Diesel Control (DDC) is a very advanced
functionality taking care of engine monitoring and control.
DDC provides options for the Scalino user to realize advanced
settings and functionality. DDC settings can be changed by
means of the DDC remote control panel, allowing the W-GV4
Scalino to operate in various modes.
Figure 3: DDC box with load indication
DDC remote control panel
The DDC box remote control panel displays various process
parameters and it allows the user to realize operational
settings.
Figure 4: Digital diesel remote control panel
1. Start button
2. Stop button
3. Select button
4. Set button
5. Failure lamp
6. Generator load indicator
7. Display
3.1.4 Power Module Genverter
As far as PMG operation and functionality is concerned, the
reader is referred to the PMG User’s Manual.
3.1.5 Battery charger
The WP-Scalino system includes a battery charger generating
7A 13.7VDC-14,2VDC to charge the starter battery.
3.1.6 Load indicators
Refer to Figures 1- 4. Both the PMG local panel and the remote
control indicate the AC load. Also the optional external DDC
control box –if installed –displays the load.
3.1.7 Fuel
SPECIFICATIONS
The engine must only be used with diesel fuel oil which
conforms to the standards for use in modern diesel engines.
Fuel free from water and contaminants is of the utmost
importance. Detailed fuel specifications are listed in section
3.2.2.
BIO-DIESEL
The use of diesel fuels to a maximum blend of 5% (by volume)
of Fatty Acid Methyl Esters (FAME) known on the market as 5B
diesels is allowed as far as these B5 diesel fuels meet the
requirements in section 3.2.2.
Bio-fuels should be supplied by recognized and authorized
suppliers only.
DIESEL PREHEATER
As an option a diesel pre-heater can be mounted. This is a
special feature for applications in extreme cold conditions. In
this case the fuel filter will be inside the canopy and before the
filter will be a heating element that will prevent the formation
of paraffin crystals in the diesel and clogged filters as a result.
The operation is temperature-related. The system is controlled
by an independent switch to turn it “on” or “off”.
3.1.8 Lubricating oil
SPECIFICATIONS
The engine must be run on heavy duty lubricating oil meeting
the requirements in section 3.2.3. A well-known brand is
recommended.
It is very important to use the correct oil specification. Very
often local oil suppliers recommend a higher API class, because
they assume that a higher class is allowed. This is not the case.
One should not follow these recommendations as these higher
class oils contain additives that could cause high oil
consumption.
Never mix different types of oil.
1
2
6
5
3
4
7

TECHNICAL INFORMATION
10 W-GV4 Scalino outdoor —April 2017 —EN
OIL VISCOSITY
We recommend multi grade oil 10W40. Cold or hot conditions
a special grade could be applied according to the Viscosity Chart
below:
Figure 5: Viscosity chart
It is very important to select the right viscosity. Especially in
cold conditions the viscosity of the oil should be low (so the oil
should be “thinner”) to keep the oil pressure in the cooling
system within acceptable limits.
OIL CAPACITY
The content of the crankcase should be:
excluding heat exchanger and piping: 2 litres
including heat exchanger and 2 m piping: 2.9 litres
Do not overfill with lubricating oil as this may have a
detrimental effect on engine performance.
Refer to the maintenance chapter (Ch.5) for details.
LUBRICATING OIL PRESSURE
Minimum at idle:
49 kPa (0,5 kgf/cm2- 7psi)
Normal at 3000 rpm:
147 .. 490 kPa (1,5 .. 5 kgf/cm2- 21 .. 71 psi)
Minimum at 3000 rpm:
98 kPa (1,0 kgf/cm2- 14 psi)
COOLING OIL PRESSURE
Minimum at idle:
149 kPa (1.5 kgf/cm2-21 psi)
Normal at 3000 rpm (80°C):
180 .. 220 kPa (1,8 .. 2.2 kgf/cm2–25 .. 35 psi)
Maximum cooling oil pressure is protected by an
overpressure switch that will trip at 550 kPa (5.5
kgf/cm2–80 psi).
In cold condition the pressure can be higher, but the
alarm will be suppressed.
COOLING OIL TEMPERATURE
Maximum oil cooling temperature 120°C (oil out to
the cooler).
Minimum oil temperature 70°C.
Sump oil temperature should be between 80°C and
90°C for optimal performance
3.1.9 Oil cooling heat exchanger
The W-GV4 Scalino engine is cooled by oil and not by cooling
liquid. The oil cooled heat exchanger of the W-GV4 Scalino is
not ventilated. The system is ventilated by the engine itself and
no expansion tank is applied.
When it is not possible to drain the oil from the heat exchanger
every time the oil is changed, one should pump out the engine
oil from the engine sump as well as possible and increase the oil
change frequency to once every 200 running hours.
A dedicated interval recommendation can be provided for
special applications by WhisperPower.

TECHNICAL INFORMATION
W-GV4 Scalino outdoor —April 2017—EN 11
3.2 Technical data
3.2.1 General
W-GV 4 Scalino Genverter Mobile
Programmable rpm variable speed single phase Genverter
1 cyl. 230V / 3.8kVA / 50Hz - PM Technology
GENERAL SPECIFICATIONS
Intermittent power
4.4kVA / 4.0kW at 3600rpm
Continuous power
4.4kVA / 3.5kW at 3000rpm
Peak power, 5 seconds
8kVA, surge 200%
RPM range
2800 .. 3600rpm, programmable rpm
Nominal output voltage, frequency
230V, 50Hz
Nominal output current
20.5A
Voltage tolerance
± 5%
Frequency tolerance
± 0.1%
MECHANICAL DIMENSIONS AND WEIGHT
Genverter h × w × d
510 × 410 × 451mm
Genverter dry weight
73kg (incl. sound shield)
External oil radiator h × w × d
350 × 230 × 117mm (including fan)
External oil radiator dry weight
5kg
WP-PMG h × w × d
420 × 196 × 148mm
WP-PMG dry weight
7.2kg
WP-GVC remote panel h × w × d
55 × 144 × 22mm (table top, flush mounting)
WP-GVC remote panel weight
0.4kg
Temperature range operational
-10°C .. 40°C, derating to zero at 65°C
Temperature range storage
-20°C .. 70°C
Protection degree
Engine compartment: IP25
Electronic compartment: IP21
Max. operating angle
25° in all directions
Relative humidity
Max. 95% RH, non-condensing
Material, colour
Blank brushed stainless steel (engine canopy)
Sheet metal steel covers, RAL 9010 white/RAL 9020 black (PMG)
Service interval
200h
ENGINE SPECIFICATIONS
Engine brand
WhisperPower
Engine model
WP1
Intermittent power
4.8kW / 6.4hp rated at 3600rpm, SAE J1349, ISO 3046/1
Continuous power
4.3kW / 5.8hp rated at 3000rpm
Number of cylinders
1
Operation principle
Energize to stop
Displacement
0,306 litre
Bore & stroke
78 × 76mm
Air intake system
Naturally aspirated
Combustion air consumption
0.42 m3/min
Fuel
Diesel
Fuel consumption
0.8 .. 1.2 litre/h
Fuel temperature
Max. 40°C at fuel injection pump
Fuel lift pump
Electrical pump 12VDC external (standard included)
Oil capacity
2 litre
Oil exchange
External suction pump (not included)
Service interval oil change
200hr hours
Engine cooling
Indirect oil-cooling to air by radiator
Nominal control voltage
Electrical 12VDC, common ground
Nominal starter battery requirement
12V, 55Ah
Battery charger function
Integrated in WP-PMG
Protections
Oil temperature, coolant, exhaust temperature

TECHNICAL INFORMATION
12 W-GV4 Scalino outdoor —April 2017 —EN
ALTERNATOR SPECIFICATIONS
Type
Permanent Magnet Alternator (PM)
Model
16Nm (5kW at 3000rpm), inner rotor, air cooled
Nominal output
420V, line-line, 9.2A, 400Hz,
3 phase star configuration
Rotor / stator
105 .. 419V line-line at 1000 .. 4000rpm, 133 .. 533Hz,
24 coils, 16 poles
Insulation grade
Class F, max. 155°C, 3.6kV, 500Hz
Peak efficiency
94%
Cooling Forced
Forced air
Rotor balancing
ISO 1940 G2.5
SOUND SHIELD SPECIFICATIONS
Material
Stainless steel, with inner bitumen layer
Insulation
25mm layer
Audible noise level open field
53,4dBA at 7m, 71,4dBA at 1m
POWER MODULE SPECIFICATIONS
Model
WP-PMG Power Module Genverter 4kW frame 1
Input voltage / current / frequency
360 .. 440V, 11A, up to 500Hz, 3 wire (L1, L2, L3)
Output voltage / current / frequency
230V, 16.5A, 50Hz, 3 wire (line, Neutral, PE)
Voltage Total Harmonic Distortion (nominal load)
> 3% THD
Efficiency
Peak 95%, average 93%
Cooling
Forced air cooling
Generator control
Local start/stop; local read out module
Optional generator control
WhisperPower DDC, auto Start / Stop compatible
Standard remote control
LED remote panel, 10 mtr cable,
plug and play RJ12 connectors
COMPLIANCE
Directives:
EMC 2004/108/EC, EMC 2004/104/EC (automotive), LVD 2006/95/EC
Standards:
EN 55022 (emission), EN 61000-3-2 (harmonics), EN 61000-4-11, EN 61000-3-3 (voltage fluctuations),
EN 61000-6-2 (immunity), EN 60950-1, EN 609335-1, EN 60335-2-29 (safety), EN 68-2-6 (vibration),
EN 6094 (maritime navigation and radiocommunication), UL 458 (power converters / inverters)

TECHNICAL INFORMATION
W-GV4 Scalino outdoor —April 2017—EN 13
3.2.2 Fuel specifications
Diesel Fuel Specification
Location
EN590
Bio-diesel: EN 14214
European Union
BS 2869-A1 or A2
UK
No. 2-R, No 1-D, ASTM D975-94
Bio-diesel: ASTM D-6751
USA
GB252
China
ISO 8217 DMX
International
JIS K2204 Grade No.2
Japan
KSM-2610
South-Korea
3.2.3 Lubricating oil specifications
The engine must be run on heavy duty lubricating oil meeting the
requirements of API class CH-4, CI-4 or CJ-4. It is recommended
to use lubricating oil from WhisperPower or a well-known brand.
3.2.4 Electrical diagrams
Refer to the W-GV4 Scalino Installation Manual for system
drawings presenting connections and wiring.

OPERATION
14 W-GV4 Scalino outdoor —April 2017 —EN
4OPERATION
4.1 General
The GV4 Scalino is operational after full installation and filling
up with fuel and engine lubricating oil; and subsequently
connecting the battery and digital remote control panel.
Fill with lubricating oil twice to allow the heat exchanger to get
filled with oil. This is done by filling up with oil first, run for 60
seconds, and then stop the engine and fill up again.
When checking the oil level inside the lubricating oil reservoir,
simply dip the dipstick into the oil without screwing the dipstick
into the sump.
Figure 6: Oil dipstick
ADJUSTING GENERATOR FREQUENCY
The Scalino operates on fixed speed setting. Use the speed
regulator (refer to Figure 7) to manually adjust speed within
speed ranges as documented in the specifications. Untighten
the regulator, move downward to adjust speed and tighten
again. Make sure the PMG input voltage is not exceeded when
increasing the engine speed.
Figure 7: Speed regulator
4.2 Optional variable speed mode
Realize variable speed operation by adapting ECU settings to
the load on the WP-PMG.
In variable speed mode the engine will start when the starting
button is pushed. The speed will adapt to the load. When an
additional load will be switched on the engine will speed up. To
avoid that the engine will not provide enough power to speed
up while a new heavy load is added, the Minimal Engine Speed
has to be set to a minimum (worst case) level from which the
engine will be able to speed up again.
Example: When the engine is running at no load (or almost no
load at 2500 rpm) and a 3 kW load (e.g. an air-conditioner) with
an inrush current for motor starting of 4 x nominal power is
switched on, the engine will probably not be able to ramp up
the rpm. In this case the low speed setting has to be higher;
possibly 2800 rpm. However when load steps of only 1 kW are
switched on, one after another, a low speed setting at 2500
rpm will be OK. The optimal low rpm setting can be established
by trial and error and can be mechanically adjusted on the
engine. However, the PMG’s maximum input voltage shall not
be exceeded.
4.3 Operating instructions
While in operation, monitor the Scalino AC load and voltage by
means of the PMG panel LED indicators.
4.3.1 Summarized operating instructions (daily use)
“PRE-START” CHECKS
Perform the following routine "pre-start" checks prior to
starting the WP-GV4 Scalino:
1Check oil level
The GV4 Scalino Genverter switches off in the event of
insufficient oil pressure.
Even when the oil level is too low, the oil pressure can
be high enough not to trip an alarm. Do not run the
engine with the oil below the lowest mark, because a
smaller volume of oil will become contaminated
considerably quicker than a larger volume. Also the
cooling can be affected. Therefore we recommend
daily oil-checks.
Check oil level prior to starting the engine or at least 5
minutes after the engine has stopped.
2 Check for leakages.
3 Switch to power source selector switch to "OFF",
or switch off all consumers in the usual way.
4 Switch on the battery switch (when installed).
5 Make sure the fuel valve is open.

OPERATION
W-GV4 Scalino outdoor —April 2017—EN 15
STARTING ROUTINE AND CHECKS
Figure 8: WP-PMG local panel
Start the WP_GV4 Scalino:
1 Push the START button on the WP-PMG local panel
(Figure 8) and hold for two seconds to initiate the full
automatic starting procedure. As a result, the electric
system is activated.
You can monitor the procedure on the remote control
display.
The first time starting up or after running out of fuel it
could be necessary to prime the fuel system. Refer to
bleeding fuel system instructions in the maintenance
chapter 5.2.2.
2 In case of a ‘cold start’ (starting problems may occur
in open air and/or, under winter conditions) the small
orange oil screw plug on the cylinder head cover has
to be removed. Add 2ml of engine lubrication oil and
screw the plug back in before starting. Push down the
decompression lever. It will return automatically
when cranking.
Never use ether or gasoline for cold start as it could
damage the engine.
Warm up the engine without load for 3 minutes.
3 A restart protection prevents starting the engine
when it is already running, which may cause damage.
CHECKS WHILE IN OPERATION
When in operation: perform the following operational checks
on a regular basis:
1 Check for abnormal noise or vibration
2 Check the output parameters on the remote control
display.
3 Observe the exhaust at the normal full load.
The exhaust must be free from soot. Do not allow the
engine to run with a dirty exhaust without
investigating the cause as this may result in an
expensive breakdown. When ramping up rpm, the
engine will probably produce some smoke. After
stabilizing on the right rpm for the load the exhaust
should be free from soot.
STOPPING ROUTINE
How to stop then W-GV4 Scalino Genverter:
1 Switch off all electrical devices (consumers).
If the GV4 Scalino has been running under full load for
a longer period, do not shut it down abruptly. Reduce
the electrical load to about 30% of the rated load and
let it run for approx. 5 minutes.
2 Press the PMG STOP button (Figure 8) and hold for 2
seconds.
3 Switch to another AC power source, if available.
4.3.2 Extended operating instructions
FIRST TIME CHECKS
Check when starting the first time or after a longer period of
rest:
1 Check for any damages caused by transport or
installation.
2 Check if the installation conforms to the installation
instructions.
3 Ensure the engine is free to turn without obstruction.
4 Check all hoses and hose connections for leaks.
5 Check all cables and terminal connections.
CHECKS DURING LONGER OPERATION
Check engine load during longer operation. The first 50 hours of
running the load should be restricted to 70 % of maximum load.
Running for long periods at no load or light load in the first 50
hours can cause cylinder glazing and high oil consumption.
1 Ensure that the WP-GV4 Scalino is not overloaded.
Overloading occurs when the electrical load (demand)
is so high that the alternator cannot be turned around
properly by the diesel engine. Overloading causes the
engine to run rough, while using oil and excessive fuel
and producing soot by the exhaust. The engine can
even stop.
The Genverter should therefore only be loaded at the
maximum rated power for short periods (2-3 hours)
only!
The high peak current is meant for the ability to start
electrical devices that need a high current for starting
especially electric motors and compressors (from
standstill).
In order to prolong the Genverter life expectancy, the
nominal electrical demand on the system should be
about 70% or the rated Genverter’s maximum load.
Please note this when switching on your electrical
devices!
Nevertheless, the W-GV4 Scalino is designed so as not
to overheat, even under extreme conditions.
2 Do not run the Genverter for very long periods at no
load or at very low load. When this is necessary, do
load the Genverter at least one hour in 10 hours for

OPERATION
16 W-GV4 Scalino outdoor —April 2017 —EN
minimum 70%. Long term running at too low load will
cause the exhaust to be choked by carbon (soot).
WARNING
Never remove the battery while the
engine is running or any electrical cable
while the battery is connected in the
circuit. Only disconnect the battery with
the engine stopped and all switches in
"OFF" position.
STOPPING AFTER LONGER OPERATION
Avoid stopping of the Genverter abruptly after a long period of
operation at high load! Doing so, you avoid unnecessary
thermal load to the engine!
Furthermore, do not stop the engine with the decompression
lever unless in emergency when there is total loss of control.
Act as follows:
1Prior to switching off the WP-GV4 Scalino, decrease
the load (i.e. turn off most electrical users) and let the
Scalino run at low load for approx. 5 minutes to allow
the engine to get properly cool (the influent coolant
oil must flow through the system in order to cool the
engine).
2If the Genverter is operating in a hot environment
and you do not act as given above, the excessive heat
in the engine can trip the "high temperature" alarms.
In that case, a restart of the engine is not possible for
some time. It is also recommended to switch off
electrical users prior to stopping the Genverter
because of the voltage drop that occurs as the engine
comes to a halt.
3Press the STOP button and hold for 2 seconds.
4Switch to another 230V power source, if available.

MAINTENANCE
W-GV4 Scalino outdoor —April 2017—EN 17
5MAINTENANCE
5.1 Maintenance intervals
Service level:
break-in
1
2
3
4
before
each
start
after
35-50 h
every
200 h/
6M*
every
400 h/
12M*
every
800 h/
24M*
every
1600 h/
36M*
Lubricating oil
check oil level

change oil and clean oil strainer

(12M)
check lubricating oil pressure

Cooling system
check and clean radiator

check hoses

Exhaust
check exhaust

Nuts & bolts
check all and tighten where necessary

Electrics
check all electrical connections


check battery (acid level, connections)

Fuel system
drain water from tank

replace fuel filter

check fuel hoses

check injection nozzle and injection pressure

check fuel injection pump
(3200h)
Air supply
check air strainer and replace filter element

Cylinder head
retighten cylinder head bolts and readjust valve
clearance

/
* Whichever comes first.
Can be done by user. Corrective action to be taken whenever necessary.
WhisperPower service centre to be contacted.
5.2 Alternator
The alternator does not require any maintenance.
5.3 Engine
5.3.1 Preliminary instructions
All regular maintenance can be carried out when the enclosure
is open. When oil and dirt has gathered in the enclosure
measures have to be taken to avoid spilling oil and polluting the
environment.
The first service on the engine should be carried out after 50
hours of its life and after a major overhaul. In the first 50 hours
the engine should receive special attention:
Long periods of light or no load running in the first 50
hours may lead to cylinder glazing and high oil
consumption.
For the same reason it is of the greatest importance
to use the right oil specification.
The first time starting up or after running out of fuel it
could be necessary to prime the fuel system.
5.3.2 Bleeding fuel lines
Ensure there is sufficient fuel. The system is self-bleeding. The
first time starting up or after running out of fuel it could be
necessary to prime the fuel system. Push the start button
activating the electric system and activating the fuel pump.
When more time is needed to bleed, push “start” and “hold”
the button on the local control panel (so not on the remote
panel). When holding the button the pump will work, but the
unit will not start. Hold as long as necessary to bleed the
system.
5.4 Regular maintenance
5.4.1 Changing oil and cleaning the oil strainer
In practice it will not be possible to change all oil in the system,
because some oil will be left in the cooling system. Therefore
we recommend changing the oil twice, especially at the end of
break-in:
Have the engine run until it is on temperature and stop it. Drain
oil by using a vacuum pump as commonly used in garages. Refill
the engine with oil; start the engine and have it run for 5
minutes. Stop the engine and pause for a few minutes to let the
oil gather in the crankcase.
The oil strainer can be found left below on the service side.
Drain the oil again and put some tissues under the oil strainer
cap before removing it. Take out the strainer element and clean
it if necessary using tissue or white spirit.
Refill with fresh oil for the second time. Start again; after 5
minutes stop; pause for a few minutes check the level and add
oil if necessary.
5.4.2 Checking the battery
Check the battery terminals for corrosion and clean if
necessary.
5.4.3 Draining water from the fuel tank
Remove the drain plug and allow any water and sediment to
drain. Drain at least 1 or 2 litres of fuel to remove the water and
sediment.

MAINTENANCE
18 W-GV4 Scalino outdoor —April 2017 —EN
5.4.4 Cleaning the external coolant radiator
Check the external radiator for leakage and air restriction. Make
sure the 12VDC fan is not blocked.
5.4.5 Replacing the fuel filter
Filter change is needed when the fuel is contaminated and as
part of preventive maintenance at least every 400 running
hours. Before changing the filter, clamp off the supply line.
Remove the hoses from filter and attach them on the new filter
again. The arrow on the filter housing indicates the direction of
the flow. A clogged filter results in a lack of output of the
engine and irregular running.
5.4.6 Air filter element
The W-GV4 Scalino is standard supplied with an air inlet filter
element. Filter change depends on environmental
contamination. Replace the air filter at least every 400 running
hours. The foam around the filter element can be cleaned by
compressed air. Do not use solvents to clean the foam. The
filter cannot be cleaned and must be replaced. Access to the
filter can be obtained by unscrewing the wing nut and pulling
the engine towards the service side. The filter can now be
replaced.
5.4.7 Checking hoses and electrical connections
Visually check cooling hoses, fuel hoses and electrical wiring,
paying particular attention to abrasion, wear and corrosion.
Have items replaced when necessary.
5.4.8 Retightening cylinder head bolts and adjusting valve
clearance
Both procedures have to be carried out with a cold engine. Be
sure to retighten the cylinder head bolts before adjusting the
valve clearance. First remove the valve cover.
Loosen the bolts slightly, remove the rocker assembly (the
rocker arms, shaft, and stays) and then retighten the bolts to
the specified torque in the numerical order illustrated
Figure 9: Cylinder head bolts
Tightening torques
Cylinder head screws M9x1,5: 47 to 51 Nm
Rocker arm bracket mounting: M6 x 1: 10 to 12 Nm
Standard torque chart
Size
M6x1.0
M8x1.25
M10x1.5
Nm
10.8+1.0
25.5+2.9
49.0+4.9
Apply 80% torque when tightening bolts to
aluminium alloy.
Valve clearance
When the engine is in cold condition both valves should have a
clearance of 0.15 ± 0.03mm. The adjustment has to be done at
top dead centre (TDC) of the compression stroke. There is a
marking on the flywheel, but this is invisible due to the PM
cover. One can find the TDC by rotating the flywheel and
watching each valve to open and close, though.
Rotating the flywheel can be realized by means of the flywheel
turning tool (article number 98002002; also refer to Figure 10).
Figure 10: Turning tool to move to Top Dead Center position
To be able to access the turning tool insertion point, first
disassemble the water pump. Rotate the flywheel clockwise,
allowing the exhaust valve to open and close and the intake
valve to open and close. After the intake valve has closed,
rotate the flywheel clockwise an additional ¼ turn. At this
position the piston will be on compression stroke and both
valves will be closed allowing valve clearance adjustment to be
completed.
Before closing the valve cover apply some oil to the contact
surface between the adjusting screw and push rod. Use a new
valve cover gasket.
1
2
3
4

MAINTENANCE
W-GV4 Scalino outdoor —April 2017—EN 19
5.5 Putting out of service
When not using the Genverter for a longer period it is
recommended to execute an engine preservation procedure.
1Clean the engine.
2Loosen the fuel suction pipe and fuel return and put them
in a can with preservation diesel fuel. Start the engine and
run the engine warm.
3Stop the engine.
4Drain the hot engine oil and refill with preservation oil.
5Open the orange oil screw plug on the cylinder cover and
add 2 cc preservation oil. Then rotate the engine.
6Disconnect the battery and store it in a dry place free of
frost and charge it regularly.
7Close inlet- and outlet openings with tape.
8Protect the Genverter against the influences of bad weather
conditions.
This method of preservation will be sufficient for 6 months.
Change oil before using the engine again.

TROUBLESHOOTING
20 W-GV4 Scalino outdoor —April 2017 —EN
6TROUBLESHOOTING
6.1 General
If any problem should occur, check basic conditions and
examine all external wiring, switch gear and circuit breakers.
Also check if measuring instruments give the correct value. If in
doubt, measure directly on the alternator terminals with an
independent instrument.
In case of inverter failure or oil pressure, oil temperature or
exhaust temperature limit exceeding, the error will be indicated
on the PMG local panel (bottom left; refer to Figure 8).
6.2 Alternator/ electrical faults
Beware of parts which are live! The alternator
generates voltage up to 650 V.
Remove 3 A fuse from the control panel while
working on the Genverter in order to prevent the
engine from starting.
6.2.1 Troubleshooting table for alternator
PROBLEM
CAUSE
SOLUTION
No output (voltage) at all
Circuit breaker "off" or faulty fuse
Check switches and fuses and measure directly on
the alternator to exclude external causes.
Low engine RPM
Check the engine RPM and adjust
Alternator failure
Check alternator resistance (1.4Ω). Contact
WhisperPower Service
Genverter output voltage too low
when in no load condition and RPM
is above 2500 RPM
Alternator failure
Contact WhisperPower Service
Genverter output voltage too low
when under load, but OK in no load
condition
Genverter is overloaded
Switch off a load; reduce number of consumers
Insufficient engine RPM
Increase minimum RPM setting
Engine RPM drops when loaded
Refer to “Engine speed drops” section in 6.2
6.3 Engine faults
Remove 3 A fuse from the control panel while
working on the Genverter in order to prevent the
engine from starting.
6.3.1 General
When the engine is not cranking well, starting problems almost
always originate from battery problems or poor battery cable
connections.
When the engine does crank, starting problems almost always
originate from lack of fuel or air bubbles in the fuel pipes.
A failure code is displayed when a hardware failure at the engine is
detected.
6.3.2 Troubleshooting table for engine
PROBLEM
CAUSE
SOLUTION
Diesel engine fails to crank; no
response at all
Faulty fuse on the control panel
Replace fuse
Battery switch off
Switch on
Battery completely empty
Charge or replace battery