INVERTER GENERATOR
USER'S MANUAL
R
GENMAX GENERATOR
GM2800iA/GM2800iAE
Portable Inverter Generator
2500 Running Watts | 2800 Peak Watts
GM3500iA/GM3500iAE/GM3500iAD/GM3500iAED
Portable Inverter Generator
3200(GAS.)/2800(LPG) Running Watts | 3500(GAS.)/3100(LPG) Peak Watts
WARNING: SAVE THIS MANUAL FOR FUTURE REFERENCE
This manual contains important information regarding safety. Operation,
maintenance and storage of this product. Before use, read carefully and
understand all cautions, warnings, instructions and product labels. Failure to do
so could result in serious personal injury and/or property damage.
1
UNPACKING
Always have assistance when lifting
the generator. The generator is heavy;
lifting it could cause bodily harm.
Avoid cutting on or near staples to
prevent personal injury.
Tools required - box cutter or similar device.
1. Carefully cut the packing tape on top of the carton.
2. Remove socket wrench, and oil funnel and save
for later.
3. Carefully cut two sides of the carton to remove the
generator.
WHAT COMES IN THE BOX
Spark Plug Socket Wrench (1)
Dual-Purpose Screwdriver (1)
User Manual (1)
Warranty Information (1)
Funnel (1)
30A 120V L5-30R to TT-30R Plug Adapter
(GM3500iAED only)(1)
Remote Control Key (GM3500iAE/GM3500iAED
only)(1)
LPG Hose (GM3500iAD/GM3500iAED only)(1)
450ml 10W30 Oil(1)
DISCLAIMERS:
All information, illustrations and specifications in this manual are based on the latest information available at the
time of publishing. The illustrations used in this manual are intended as representative reference views only.
Moreover, because of our continuous product improvement policy, we may modify information, illustrations and/or
specifications to explain and/or exemplify a product, service or maintenance improvement. We reserve the right to
make any change at any time without notice. Some images may vary depending upon which model is shown.
ALL RIGHTS RESERVED:
No part of this publication may be reproduced or used in any form by any means - graphic, electronic or
mechanical, including photocopying, recording, taping or information storage and retrieval systems - without the
written permission of CHONGQING DINKING POWER MACHINERY CO., LTD
This manual contains important instructions for operating this inverter generator. For your
safety and the safety of others, be sure to read this manual thoroughly before operating the
generator. Failure to properly follow all instructions and precautions can cause you and others
to be seriously hurt or killed.
2
Spark Plug Socket Wrench
Used in spark plug maintenance,
inspection, and installation.
Phillips and slot blade
screwdriver used for generator
maintenance.
Dual-Purpose ScrewdriverFunnel
It's used to oil the generator.
DESCRIPTION OF FITTINGS
Remote Control Key
Used to remotely start and stop
the generator.
LPG Hose
Connect the LPG tank to
transmit LPG fuel to the
generator.
1485 mm
Hose length
LPG Hose
Pressure 1psi
First Stage Reducing Valve
Two Stage Pressure Reducing Valve
Button To Increase The Intake Volume
1.312"-5ACME
Inside Diameter
Gas Cylinder Joint
5/8"-18UNF
Inside Diameter
Note: Actual tools may differ in appearance or design from image shown.
450ml 10W30 Oil
Be sure to add oil before starting
the generator.
30A 120V L5-30P to TT-30R
Plug Adapter
Change the 30A 120V L5-30R
socket to the TT-30R socket.
3
LIMITED WARRANTY
1. DURATION : One (1) year from the date of purchase by the original purchaser ( retail customer ) on products used
solely for consumer applications; if a product is used for business, commercial, or industrial applications, the warranty
per iod will be limited to ninety (90) days from the date of purchase.
2. WHO GIVES THIS WARRANTY (WARRANTOR):
CHONGQING DINKING POWER MACHINERY CO., LTD
3. WHO RECEIVES THIS WARRANTY(PURCHASER):The original purchaser (other than for purposes of resale) of
the Genmax's inverter.
4. WHAT PRODUCTS ARE COVERED BY THIS WARRANTY: Any portable generator supplied or manufactured by
Warrantor.
5. WHAT IS COVERED UNDER THIS WARRANTY: Substantial defects on material and workmanship which occur
within the duration of the warranty period.
6. WHAT IS NOT COVERED UNDER THIS WARRANTY:
A. Transportation changes for sending the product to Warrantor or its authorized service representative for warranty
service, or for shipping repaired or replacement products back to the customer; these charges must be borne by the
customer.
B. Damages caused by abuse, accident, shipping, misuse, overloading, modification, and the effects of corrosion,
erosion and normal wear and tear.
C. Warranty is voided if the customer fails to install, maintain and operate the product in accordance with the
instructions and recommendations set forth in the owner's manual(s), or if the product is used as rental equipment.
D. Pre-delivery service, i.e. assembly, oil or lubricants, and adjustment.
E. Items or service that are normally required to maintain the product, i.e. lubricants and filters.
F. Warrantor will not pay for repairs or adjustments to the product, or for any costs or labour, performed without
Warrantor's prior authorization.
EXCLUSIONS AND LIMITATIONS : Warrantor makes no other warranty of any kind, express or implied. Implied
warranties, including warranties of merchantability and of fitness for a particular purpose, are hereby disclaimed. This
warranty service described above is the exclusive remedy under this warranty; liability for incidental and consequential
damages is excluded to the extent permitted by law.
7. RESPONSIBILITIES OF PURCHASER UNDER THIS WARRANTY:
A. The purchaser must provide dated proof of purchase and must notify Warrantor within the warranty period.
B. Deliver or ship the serviced generator or component to the nearest Warrantor's authorized service representative.
Freight costs, if any, must be borne by the purchaser.
8. HAVE QUESTIONS?
Email: service@genmaxpower.com Phone: 866-960-2920
Model Number: _____________________________________
Name: ___________________________________________
Serial Number: ______________________________________
Street Address: ___________________________________
Date Purchased: ____________________________________
Purchased From: ____________________________________
City, State, ZIP: ____________________________________
Country: __________________________________________
Phone Number: ___________________________________
E-Mail: ___________________________________________
WARRANTY CARD
R
4
TABLE OF CONTENTS
LIMITED WARRANTY
3
SAFETY WARNING
5
SAFETY INSTRUCTIONS
6
NAMES OF COMPONENTS
8
CONTROL FUNCTIONS
9
PREPARATIONS
13
1.Fuel...........................................................................................................................................13
2.Oil..............................................................................................................................................13
3.LPG...........................................................................................................................................14
4.Pre-use Inspection...........................................................................................................15
STARTING UP THE GENERATOR
16
SHUTTING DOWN THE GENERATOR
21
USING THE GENERATOR
22
1.Service Environment of the Generator......................................................................................22
2.Generator Wiring.......................................................................................................................22
3.Generator Grounding................................................................................................................23
4.Battery Charging.......................................................................................................................24
SERVICE AND MAINTENANCE
25
1.Spark Plug Inspection..............................................................................................................26
2.Adjustment of the Carburetor....................................................................................................27
3.Replacement of Oil...................................................................................................................27
4.Air Filter.....................................................................................................................................28
5.Fuel Filter Screen......................................................................................................................29
STORAGE AND TRANSPORT
30
1.Generator Storage....................................................................................................................30
2.Generator Transport..................................................................................................................31
TROUBLESHOOTING
32
TECHNICAL PARAMETERS
34
CHOOSING A GENERATOR
35
5
SAFETY WARNING
Personal and property safeties of you and others are very vital. Please read the Safety
Warning in the User's Manual and the decals of the generator set carefully.The Safety
Warning can alert you to those potential hazards that could harm you and others. In front
of each Safety Warning, there is one of four words "DANGER" "WARNING",
"ATTENTION", and "CAREFUL". Details are as follows:
Failure to follow the instruction will result in being
in peril of your life or extremely serious injury.
Failure to follow the instruction will result in being
in peril of your life or very serious injury.
Failure to follow the instruction will result in minor
injury.
Failure to follow the instruction will result in the
damage to your generator set and other properties.
For portable generators where the neutral is floating, the operator's manual shall include the following wording or
equivalent:
The portable generator stator winding is isolated from the frame and from the AC receptacle ground pin; and
Electrical devices that require a connection between one conductor pin and the grounded receptacle pin may not
function properly.
NEUTRAL FLOATING
CO DETECT technology monitors the accumulation of carbon monoxide (CO), a poisonous gas produced by
engine exhaust when the generator is running. If CO Sensor detects unsafe elevated levels of CO gas, it
automatically shuts off the engine. CO Sensor is not a substitute for an indoor carbon monoxide alarm or for safe
operation. DO NOT allow engine exhaust fumes to enter a confined area through windows, doors, vents or other
openings. Generators must ALWAYS be used outdoors, far away from occupied buildings with engine exhaust
pointed away from people and buildings. Meets the requirements of ANSI/PGMA G300-2018.
CO TECHNICAL WARNING
6
SAFETY INSTRUCTIONS
Before operating the generator, it will help you avoid accidents to read and understand the Manual and
familiarize yourself with the safe operation procedures of the generator.
Please do not use indoors
Please do not use in humid
environment
Please do not connect it to
household appliances directly
Please do not smoke when refueling
Please do not spill when refueling
Please shut down the generator
before refueling
7
SAFETY INSTRUCTIONS
SAFETY LABELS AND DECALS
6
Before using the generator, please read the operation
manual.Be careful with the shock hazard.Be careful, the fuel
is flammable, do not add the fuel when the engine is running.
8
NAMES OF COMPONENTS
① Fuel Tank Cap: Open the fuel tank cap and fill with
proper amount of gasoline.
②
Recoil Handle: Pull to start the engine.
③ Bolt: Remove left (right) outer cover.
④ Left Outer Cover
⑤ Control Panel: Contains the reset breaker, outlets
and warning lights.
⑥ Engine Cooling Vents: Helps move airflow in unit
to regulate engine temperatures.
⑦ Right Outer Cover: Unscrew the bolts to remove
the outer cover, add or replace the oil and maintain the
air filter.
⑧ Muffler: Avoid contact until the engine is cooled
down. The spark arrestor prevents sparks from exiting
the muffler. It must be removed for servicing.
⑨ Spark Plug Access Cover: Remove the cover to
service the spark plug.
⑩ Telescopic Rod
⑪ Wheel
⑫ LPG Inlet: Connects the LPG inlet to the LPG
hose/regulator.
⑬ Fuel Source: GAS/LPG valve that changes the fuel
into the engine.
⑭ Magnetic Oil Dipstick: absorb iron filings in the oil,
it is recommended to screw down the magnetic oil
dipstick and clean it every 50 hours.
3
4
2
12
13
1
10
5
6
9
3
11
7
14
8
9
CONTROL FUNCTIONS
① 120V AC 20A 5-20R Outlet: The outlet is capable of
carrying a maximum of 20 amps.
② USB Duplex: 5V DC that come in 1 amps and2.1
amps.
③ Reset: If the inverter is overloaded, the reset
breaker will trip. The engine will continue to run, but
there will be no output from the inverter. Unplug the
devices and reduce the load. Push in the reset breaker
to reset it.
④ Low Idle: When turned to the ON position, the
engine will sense the load needed and run at a slower
RPM to save fuel.
⑤ Ground Terminal: The ground terminal is used to
externally ground the inverter.
⑥ CO Alarm: Flashing red light: dangerous levels of
carbon monoxide gas have built up leave immediately
until area has aired out. Move generator to well-
ventilated area before operation. Flashing yellow light:
carbon monoxide sensor malfunction. Sensor needs
service.
⑦
AC Breaker: If the inverter is overloaded, the reset
breaker will trip to block current.
⑧ Parallel Connectors: To increase AC power output,
the connector sockets are used to connect the two
same type generator with special paralleling cords. The
connector sockets is only used to the communication
between the inverters, they can not used for AC power
output. The special paralleling cords shall be purchase
separately, and they shall be approved by certification
body.
⑨ 120V AC 30A L5-30R Outlet: The outlet is capable
of carrying a maximum of 30 amps.
⑩ Indicator Light: Red light (LOW OIL) means that
the amount of oil is too low, red light (OVERLOAD)
means that the machine overload, green light
(POWER) means normal oper
CONTROL PANEL FEATURES GM2800iA/GM3500iA
10
10
CONTROL FUNCTIONS
① 120V AC 20A 5-20R Outlet: The outlet is capable
of carrying a maximum of 20 amps.
② USB Duplex: 5V DC that come in 1 amps and2.1
amps.
③ Reset: If the inverter is overloaded, the reset
breaker will trip. The engine will continue to run, but
there will be no output from the inverter. Unplug the
devices and reduce the load. Push in the reset breaker
to reset it.
④ Low Idle: When turned to the ON position, the
engine will sense the load needed and run at a slower
RPM to save fuel.
⑤ Ground Terminal: The ground terminal is used to
externally ground the inverter.
⑥ CO Alarm: Flashing red light: dangerous levels of
carbon monoxide gas have built up leave immediately
until area has aired out. Move generator to well-
ventilated area before operation. Flashing yellow light:
carbon monoxide sensor malfunction. Sensor needs
service.
⑦
AC Breaker: If the inverter is overloaded, the reset
breaker will trip to block current.
⑧ Parallel Connectors: To increase AC power
output, the connector sockets are used to connect the
two same type generator with special paralleling cords.
The connector sockets is only used to the
communication between the inverters, they can not
used for AC power output. The special paralleling
cords shall be purchase separately, and they shall be
approved by certification body.
⑨ : The 120V AC 30A TT-30R Outlet(NEMA RV30)
outlet is capable of carrying a maximum of 30 amps.
⑩ Indicator Light: Red light (LOW OIL) means that
the amount of oil is too low, red light (OVERLOAD)
means that the machine overload, green light
(POWER) means normal operation.
Frequency
display, Load power display.
⑪ Fuel Source: Gasoline and LPG switch back and
forth.
⑫Fuel Light: LPG green light is steady on, gasoline
blue light is steady on.
CONTROL PANEL FEATURES GM3500iAD
10
12
11
11
CONTROL FUNCTIONS
CONTROL PANEL FEATURES GM2800iAE/GM3500iAE/GM3500iAED
① 120V AC 20A 5-20R Outlet: The outlet is capable
of carrying a maximum of 20 amps.
② USB Duplex: 5V DC that come in 1 amps and2.1
amps.
③ Reset: If the inverter is overloaded, the reset
breaker will trip. The engine will continue to run, but
there will be no output from the inverter. Unplug the
devices and reduce the load. Push in the reset breaker
to reset it.
④ Low Idle: When turned to the ON position, the
engine will sense the load needed and run at a slower
RPM to save fuel.
⑤ Ground Terminal: The ground terminal is used to
externally ground the inverter.
⑥ CO Alarm: Flashing red light: dangerous levels of
carbon monoxide gas have built up leave immediately
until area has aired out. Move generator to well-
ventilated area before operation. Flashing yellow light:
carbon monoxide sensor malfunction. Sensor needs
service.
⑦
AC Breaker: If the inverter is overloaded, the reset
breaker will trip to block current.
⑧ 120V AC 30A L5-30R Outlet: The outlet is capable
of carrying a maximum of 30 amps.
⑨
Parallel Connectors: To increase AC power output,
the connector sockets are used to connect the two
same type generator with special paralleling cords. The
connector sockets is only used to the communication
between the inverters, they can not used for AC power
output. The special paralleling cords shall be purchase
separately, and they shall be approved by certification
body.
⑩ One Push Start: Press this button, the engine can
start and stop.
⑪ Battery Charging Port: Charge the generator battery.
10
11
12
CONTROL FUNCTIONS
DIGITAL DISPLAY CENTER
① : Represents single run time, goes from 0
at each startup.
② : Represents total operation time of the
generator. (Tip: The total operation time shall start to
accumulate after the generator runs for one hour. It
will not be displayed when the generator runs for less
than one hour. The total operation time shall be
accumulated by hours.) The two factors ① and ② are
displayed alternately every 8 seconds.
③ GASOLINE FUEL METER: Gasoline fuel level
display.
④ VOLTAGE: Voltage display.
⑤ FREQUENCY: Frequency display.
⑥ LOAD: Load power display.
⑦ POWER: Green light means normal operation.
⑧ OVERLOAD: Red light means the machine
overload.
⑨ LOW OIL: Red light means the amount of oil is too
low.
13
PREPARATIONS
Fuel
1
DANGER
• Fuel is flammable and toxic, please read the Safety Instruction carefully before refueling;
• Do not fuel too full, otherwise fuel will spill after fuel tank is warmed;
• After refueling, confirm that the fuel tank cap has been tightened.
ATTENTION
• After refueling, dry gasoline residue with a clean and soft cloth in time to avoid damaging plastic
enclosure;
• Unleaded gasoline must be used, as leaded gasoline can seriously damage internal parts of the
generator;
Remove fuel tank cap, and add gasoline to red horizontal indicating line oil level.
Fuel tank capacity: 1.7gal (6.5L)
Oil
2
No oil is filled into this generator when being delivered. Do not start up the generator without filling sufficient oil.
Please place the generator onto a horizontal plane surface;
1.
Loosen the knob on the right cover
counterclockwise and remove the right cover;
2.
Unscrew oil dipstick, Fill in 0.12gal(0.45L) oil
(SAE 10W/30 oil is recommended, of which
the grade is API standard Type SE or higher);
3.
Reinstall the right exterior cover and tighten the knob.
4.
Don't go over the scale
14
PREPARATIONS
LPG
3
ATTENTION
• Propane tanks that use liquid withdrawal system can not be used on these modes.
• Confirm that the re-qualification date on the tank has not expired.
• DO NOT use included LPG hose for any other appliances.
• All new propane tanks must be purged of air and moisture prior to filling. Used propane tanks that
have not been plugged or kept closed must also be purged. The purging process should be done by
a propane tank supplier (propane tanks from an exchange supplier should have been purged and
filled properly).
• ALWAYS position the propane tank so the connection between the valve and the gas inlet will not
cause sharp bends or kinks in the hose.
WARNING
Explosion hazard. DO NOT start generator if you smell propane. ALWAYS fully close the propane
tank valve and disconnect the LPG hose from the generator when not in use.
Connecting an LPG Tank
1. Turn the generator OFF and place on a flat surface in a well ventilated area.
2. Verify that the LPG tank valve is in the fully closed position.
3. Connect the LPG hose to the LPG tank;
4. Tighten the other end of the LPG hose to the generator intake. Tighten the
LPG hose connector with an adjustable wrench until it is snug. DO NOT
overtighten.
IMPORTANT: DO NOT use thread seal tape or any other type of sealant to
seal the LPG hose connection.
5. Turn the LPG tank valve to the fully open position. Check all connections for leaks by wetting the fittings
with a solution of soap and water. Bubbles which appear or bubbles which grow indicate that a leak exists. If
a leak exists at a fitting, turn the LPG tank valve to the fully closed position and tighten the fitting. Open the
LPG tank valve and recheck the fitting with the soap and water solution. If the leak continues or if the leak is
not at a fitting then DO NOT use the generator.
15
PREPARATIONS
Pre-use Inspection
4
WARNING
Even if the generator is not in service, its important component may suddenly fails. Before the
generator is started up, if any of following components is unable to work properly, please inspect
and repair carefully.
Tip: The condition of the generator shall be inspected before using every time.
Pre-operation inspection
ProjectPossible CausesProbable Solutions
FuelCheck fuel level in fuel tank of the generator.Add fuel if necessary.
Oil
Check oil level of the generator.Add oil if necessary.
Check whether there is oil leaking.
Abnormal
conditions
during
operation
Check operating condition of the generator.
If there is any need, please do not hesitate to
consult your dealer.
Battery
Check whether the battery is full.See the “Battery Charging” page.
16
STARTING UP THE GENERATOR
Remove the load from all output ends;
1.
Press the LOW IDLE Switch to "OFF";
2.
Turn the Multi-Switch to "START";
Tip: When hot engine is started up, it is unnecessary to close the choke
valve, but turn the combination switch to "RUN".
3.
First gently pull startup handle, until guy cable is hooked tight, and then pull
it with effort;
Tip: When pulling the hand starter, hold generator carrying handle firm, to
prevent the generator from overturning.
5.
After the generator starts, turn the Multi-Switch to "RUN";
6.
GM2800iA/GM3500iA Startup Procedure
GM3500iAD Startup Procedure
Plug in after started.
7.
Remove the load from all output ends;
1.
Select the Fuel:
a. Gasoline: Press the fuel source switch to gasoline.
2.
17
STARTING UP THE GENERATOR
Turn the Multi-Switch to "START";
Tip: When hot engine is started up, it is unnecessary to close the choke
valve, but turn the combination switch to "RUN".
4.
Press the LOW IDLE Switch to "OFF";
3.
b. LPG: Press the fuel source switch to LPG.
Tip: If the cold engine fails to start many times, press the thickening valve button on the secondary
pressure reducing valve for 2-3 seconds to thicken the gas. If it is still difficult to start, please refer to the
start-up steps on page 20 of this manual to start.
First gently pull startup handle, until guy cable is hooked tight, and then pull
it with effort.
Tip: When pulling the hand starter, hold generator carrying handle firm, to
prevent the generator from overturning.
5.
After the generator starts, turn the Multi-Switch to "RUN";
6.
Plug in after started.
7.
Tip
18
STARTING UP THE GENERATOR
GM2800iAE/GM3500iAE/GM3500iAED Startup Procedure
Remove the load from all output ends;
1.
Connect battery line before first use:
1. Loosen the knob on the right cover and remove the cover;
2. Connect the positive and negative electrodes of the battery.
Tip: Connect the same color wires together, do not connect the wrong
positive and negative wires.
2.
3.
Select the Fuel:
a. Gasoline:
GM2800iAE/GM3500iAE: Turn the Fuel Switch
to "ON".
GM3500iAED: Turn the GAS/LPG Switch to
fuel gear.
a
b
b. LPG(GM3500iAED only): Turn the Fuel Source Switch to gas.
Tip: If the cold engine fails to start many times, press the thickening valve button on the secondary
pressure reducing valve for 2-3 seconds to thicken the gas. If it is still difficult to start, please refer to
the start-up steps on page 20 of this manual to start.
Tip
Press the LOW IDLE Switch to "OFF";
4.
19
STARTING UP THE GENERATOR
Remote Control Pairing
Select the matching mode according to the remote control key:
Plug in after started.
6.
12
1. Long press the one-key start button for 5 seconds until the green light is steady on;
2. Press the remote control ON or OFF, the one-button start button turns OFF the green
light, and the remote control is paired successfully.
1. Long press the start button for more than 5 seconds until the button red indicator
is on;
2. Press any key on the remote control;
3. The red indicator of the start button will blink two or three times and then turns off,
Remote start pairing is successful.
12
3.13.2
Select Boot Mode:
a. Hand Start: Pull the starting handle to start the generator.
b. Button Start: Press the one-click start button to start the generator.
Tip: If the green light keeps flashing fast, the generator does not start successfully. Press the button
to turn off the green light, and press the button again to start the generator.
c. Remote Start: Press the "ON" button on the remote control to start the generator.
5.
a
b
c
a
b
20
4. Open the LPG valve completely.
5. Fuel source switch to “LPG”.
STARTING UP THE GENERATOR
LPG startup is difficult ?
When both gasoline and propane are present in the generator it is recommended to start the generator on
gasoline first, allow the engine to stabilize then switch to propane.
1. Ensure the LPG supply hose is securely attached
and Close the LPG valve completely.
2. Fuel source rocker switch to “GASOLINE”.
3. Follow the startup steps to start the generator.
OPEN
CLOSE
Electric start and remote start no response ?
1. Check whether the positive and negative electrodes of the battery are correctly connected.
2. Check whether the battery is charged.
3. Check whether the remote control is powered on.
COMMON PROBLEMS WITH STARTING THE GENERATOR:
Start the generator to run normally without output ?
Check whether the green light of the GFCI socket is on.
If the green light is not on, press the RESET button after the generator is started to
make the green light on.
Tip: When the generator is not started, the GFCI socket is in the protected state and
the "RESET" button cannot be pressed.
Tip
● If the next step is not taken within 5 seconds, the key pairing will exit.
● The remote control delivered with the generator has been paired successfully.
21
SHUTTING DOWN THE GENERATOR
a. GM2800iA/GM3500iA: Turn the multi-switch to "STOP".
b. GM2800iAE/GM3500iAE: Turn the fuel switch to "OFF".
c. GM3500iAED: Turn the GAS/LPG switch to the middle to turn off the LPG or fuel.
3.
Unplug the power cord;
1.
Select Stop Mode:
a. Button Stop: Press the one-click start button
to turn off the generator.
b. Remote Start: Press the "OFF" button on the
remote control to turn off the generator.
2.
a
b
a
b
c
22
USING THE GENERATOR
Service Environment of the Generator
1
• Applicable temperature: -5°C~ 40°C;
• Applicable humidity: below 95%;
• Applicable altitude: regions below 1,500 m (It shall be used by reducing power in regions above 1,000 m).
Standard atmospheric condition
• Ambient temperature Tr: 298k (25°C)
• Relative air humidity Фr: 30%
• Absolute atmospheric pressure Pr: 100kPa
When actual environmental condition is inconsistent with the condition of output power of the generator
set:
• Every 5°C of increase in ambient temperature will reduce the power of generator by about 2%.
• Every 30% of increase in relative humidity of air will reduce the power of generator by about 1.5%.
• Every 300 m rising of ASL will reduce the power the generator by about 4.5%.
Generator Wiring
2
• When the generator is connected to household power source as a backup power supply, the connection shall be
carried out by a professional electrician or a person familiar with electricity.
• After connecting the load to the generator, check carefully whether electrical connection is safe and reliable.
Improper electrical connection may cause generator damage, burning or fire.
• Avoid connecting this generator to commercial power outlet.
• When extending the cable, be sure not to exceed its length.
① 60m cross-section area is 1.5mm²
② 100m cross-section area is 2.5mm²
• The appearance of extension cable shall be protected by a layer of tough and elastic rubber cover (IEC25) or
other substitutes.
OK
OK
23
USING THE GENERATOR
Connection of AC power
WARNING
All electrical equipment shall be disconnected before inserting the plug.
ATTENTION
• Make sure that all electrical equipment, including wires and plugs, are in good condition before
connecting to the generator;
• Make sure that all loads driven by the generator are within rated load range;
• Make sure that load current is within rated current range of rated socket.
Tip: Make sure that the generator set is grounded, and if electrical equipment requires
grounding, the generator set must be grounded.
① Start up the engine;
② Turn energy-saving switch to "ON";
③ Insert the plug into AC outlet;
④ Make sure that AC indicator is lit up;
⑤ Switch on electrical equipment.
Tip: Before increasing engine speed, energy-
saving switch must be switched to "OFF". If the
generator set supplies power to multi loads or
electrical equipment, start from large to small
according to the size of each electrical
equipment.
Generator Grounding
3
① Please use grounding wire with sufficient electrical energy capacity;
② Connect one end of grounding wire reliable to grounding bolt on control panel
of the generator set;
③ Insert grounding body (iron rod with a diameter of 5 ~ 10mm) 200mm below
into the earth and lead it out with conductor;
④ Connect the other end of the grounding wire reliable to the led wire of
grounding body.
In order to prevent any damage to the generator caused by electric shock or improper electrical application, it is
recommended that the generator is grounded with good conductor with insulating sheath.
Tip: How to change the grounding method please refer to the website: https://www.genmaxpower.com/page/faq
24
USING THE GENERATOR
Battery Charging
4
Connect the charger to the battery charging port on
the generator panel and connect the mains to
charge the battery.
Tip: The charging time is about 30-40 minutes.
The battery storage time is generally about 6 months. If the generator is not used for a long time, the battery will
run out of power. At this time, the battery should be charged. Replace the battery if it is damaged or fails to
charge.
Hand start charging: Start the generator by hand, and the battery will be charged automatically when the
generator runs.
Use an external power source for charging:
WARNING
Do not start the generator while charging with an external power supply. Keep batteries away from
fire sources. Keep the battery in a cool and dry place, away from direct sunlight. Keep batteries
away from children.
ATTENTION
1. Charge properly
Keeping lithium-ion batteries properly charged and discharged can prolong battery life. Maintaining a power
level of 10%-90% in lithium-ion batteries is beneficial for battery protection.
2. Choose the appropriate charging temperature
Lithium battery charging temperature range: 0-45℃.
3. Avoid overcharging
Overcharging of lithium-ion batteries must be avoided during the charging process. Overcharging of lithium-ion
batteries in any form will lead to serious damage to battery performance and even explosion.
25
SERVICE AND MAINTENANCE
Good maintenance and service is the best guarantee for safe, economical and zero-failure operation. It also
contributes to environmental protection.
In order to keep the generator in good condition, you must inspect and maintain it regularly. The maintenance
schedule is as follows:
Maintenance cycle
Item
Each
First in 1 month
or 20 hours
Then every three
months or every
50 hours
100 hours per
year or use
Engine oil
Gearbox gear
Oil (if any)
Air cleaner
element
Settling cup (if any)
Spark plug
Spark eliminator
Idle speed
(if any)**
Valve clearance**
Fuel tank and
fuel filter***
Fuel line
Cylinder head,
piston
Displacement < 225cc, every 125 hours; displacement
capacity ≥ 225cc, every 250 hours.
Check-fill
Replace
Replace
Check oil
Inspection
Clean
Replace
Clean
Clean-adjust
Clean
Check-adjust
Check-adjust
Clean
Inspection
Remove
carbon
deposit**
Every two years (Please replace if necessary)
√
√√
√
√√
√
√
√
√
√*
√
√
√
√
* heseT items shall be replaced if necessary;
** heTse items shall be maintained by the dealer authorized by the Company, unless the
user has proper tools and maintenance ability.
ATTENTION
• If it often works under high temperature or high load, oil shall be changed every 25 hours;
• If it often works in dusty or harsh environment, air cleaner element shall be cleaned every 10 hours. If
necessary, the air cleaner element shall be replaced every 25 hours;
• It shall be maintained on spot-inspection cycle and time, whichever is earlier;
• If maintenance cycle time has elapsed, perform the maintenance as soon as possible as per the table
above.
26
SERVICE AND MAINTENANCE
WARNING
Please shut down the engine first before performing any maintenance. The engine shall be placed in a
horizontal position. In order to prevent the engine from starting up, separate spark plug cap shall be
separated from spark plug.
Do not use it indoors or use it in a tunnel, cave or other places ventilated poorly. Make sure that work area
is well ventilated. Exhaust gas from the engine contains toxic gases, carbon oxides, and the inhalation can
cause shock, loss of consciousness, and even death.
Spark Plug Inspection
1
Spark plug is an important part of the generator, which must be inspected regularly.
Remove decorative cover and spark plug cap of
the generator;
1.
Insert the screwdriver into the sleeve, to screw it
counterclockwise, and then remove the spark
plug;
2.
Check whether there is discoloration, and remove carbon deposits.Check
whether there is little pale to moderate brown on ceramic cores around
center electrode of the spark plug;
3.
Check the model of spark plug and clearance.
Spark plug gap: 0.7-0.8mm
Standard spark:
4.
Tip: The spark plug clearance is required to be measured by line thickness gauge, which shall be adjusted if
necessary.
BRANDBRANDMODEL
NGK
C7HSA
CR6HSA
TORCHA5RTC
0.7~0.8mm
27
SERVICE AND MAINTENANCE
Install the spark plugs in reverse order of removal.
Spark plug torque: 14±1N.m(123.9±8.8in-lb)
5.
Tip: If there is no torque wrench when installing the spark plug, a better estimation method is to screw it 1/4-1/2
turns by force after screwing it in place, but the spark plug shall be screwed to specified torque as soon as possible.
Adjustment of the Carburetor
2
The carburetor is an important components of the engine. The adjustment shall be carried out by a dealer with
professional knowledge, professional data and equipment, to ensure that the adjustment is proper.
Replacement of Oil
3
WARNING
Do not drain the oil immediately after turning off the generator. Oil temperature is very high, when
operating, take care to avoid scalding.
Put the generator on a horizontal plane, start the generator, run it for a few minutes to make it warm, then
turn off the engine.
1.
2.
Unscrew oil dipstick.
3.
Loosen the knob on the right cover
counterclockwise and remove the right cover;
28
SERVICE AND MAINTENANCE
Place an oil pan under the engine, tilt the generator to quickly pour out oil;
After discharging the oil, put the generator back on level ground.
4.
Don't go over the scale
Refill oil to a proper level, tighten oil dipstick,
cover external cover plate and tighten the knob.
5.
Recommended oil: SAE S10W/30
Oil grade: API standard Model SJ or higher
Volume: 0.12gal(0.45L)
Air Filter
4
Dirty air cleaner may prevent air from flowing into the carburetor. In order to prevent failure of the carburetor,
please maintain air cleaner regularly. If being used in a dusty environment, it shall be maintained frequently.
1.
Remove screws , to remove cover plate of air
cleaner ;
2.
Clean foam cleaner element with cleaning solvent and blow it dry, Put a few
drops of oil on the filter element.
3.
ATTENTION
Be sure not to twist the foam cleaner element forcibly to avoid damage.
Put foam cleaner element into air cleaner;
Tip: Make sure that the surface of foam cleaner element is in close contact
with air cleaner, and there shall be no gap leaking air. Be sure not to start the
engine before air cleaner is assembled, because it will generate excessive
toxic gas and wear the cylinder;
4.
Loosen the knob on the right cover
counterclockwise and remove the right cover;
29
SERVICE AND MAINTENANCE
1. Reassemble empty air cleaner cap back to
original position, and tighten screws;
2. Assemble right exterior cover and tighten knob.
5.
Fuel Filter Screen
5
WARNING
Be sure not to open fuel tank of the generator in a place where smoking or with flame.
1. Remove fuel tank cap and fuel tank filter screen.
2. Clean fuel tank filter screen with gasoline.
3. Wipe filter screen dry, and put it back into fuel tank.
4. Reassemble fuel tank cap.
Be sure to screw fuel tank cap tight.
ATTENTION
30
STORAGE AND TRANSPORT
Generator Storage
1
If it is stored long-term, in order to prevent aging, you shall take some storage measures.
Shut down generator.
1.
Open fuel tank cap, to take out fuel filter screen.
Pump all fuel in fuel tank into special fuel tank,
and then reassemble fuel tank cap back.
2.
Start up the engine to burn off fuel in the carburetor, and then shut it down.
3.
Tip: Do not connect any electrical equipment. Running time of the engine depends on remaining fuel in the fuel
tank.
Open the generator right exterior cover and enter the carburetor. Locate the
clear plastic hose from the carburetor and place a suitable container under it
to capture the drained fuel.
4.
Loosen the carburetor drain screws until you
see fuel draining from the carburetor.
5.
Allow fuel to drain into the container and tighten the drain screws on the
carburetor. Install the engine service panel.
6.
Unscrew oil dipstick, and drain oil in the crankcase off. Fill new oil to upper oil limit, and then assemble
oil dipstick.
7.
31
STORAGE AND TRANSPORT
Gently pull startup handle until you feel resistance, allowing both inlet valve
and exhaust valve to be closed.
8.
Place the generator set in a clean and dry area.
10.
Generator Transport
2
• When the generator set is transported, it shall be ensured that there is no fuel spilling;
• Do not fill excessive fuel into fuel tank;
• Do not run the generator, and avoid direct sunlight;
• Do not transport the generator set on rough road for long time.
Disconnect the battery cable.
(GM2800iAE/GM3500iAE/GM3500iAED only)
9.
32
TROUBLESHOOTING
33
TROUBLESHOOTING
34
TECHNICAL PARAMETERS
Item
GM2800iA/GM2800iAE
Engine Model
Engine Type
Displacement (cc)
Gas Distribution Mode
Cooling Mode
Rated Speed (RPM)
Starting Method
Fuel Tank Volume (gal)
Fuel Type and Grade
Lubricating Oil Capacity (gal)
Lubricating Oil Model
145
OHV
Forced cooling wind
4500
GM2800iA/GM3500iA/GM3500iAD: Recoil start
GM2800iAE/GM3500iAE/GM3500iAED: Recoil start/Electrical start/Remote start
1.7(6.5L)
Vehicle-use unleaded gasoline
SAE 10W/30
0.12(0.45L)
Noise dB (at 7m)(25% load)
Rated Power (kW)
Max. Power (kW)
Rated Voltage (V)
Rated Frequency (Hz)
Rated Power Factor
Phase Number
62
2.5
2.8
120
60
1
Single phase
Run Time @ 25% (h)
10
Overall Dimension (in.)
Net Weight (lb.)
20.9×12.2×19.7(530×310×500mm)
51/54(23/24.5kg)
GM3500iA/GM3500iAE
164F/P
145
OHV
4850
SAE 10W/30
62
3.2
3.5
120
60
1
Single phase
GM3500iAD
GM3500iAED
Stroke x Bore (mm)
64x4564x45
9
164F/P
145
OHV
SAE 10W/30
62
3.2(GAS.)/2.8(LPG)
120
60
1
Single phase
56.2(25.5kg)
64x45
9(GAS.)
4-stroke4-stroke4-stroke
164F/P
51/54(23/24.5kg)
4850
3.5(GAS.)/3.1(LPG)
Fuel Consumption Rate
(25% load)(L/h)
THD
Fuel Consumption Rate
(100% load)(L/h)
0.75
1.5
≤3%
0.85
1.9
≤3%
0.85
≤3%
1.9
LPG Consumption Rate
(25% load)(kg/h)
LPG Consumption Rate
(100% load)(kg/h)
-
-
-
-
0.425
1.25
Valve Clearance
Input valve：0.03~0.08mm, Output valve：0.03~0.08mm
1.7(6.5L)1.7(6.5L)
0.12(0.45L)0.12(0.45L)
35
R
CHOOSING
A GENERATOR
1
36
In production management, based on orderly, efficient, scientific principles. trying to do as
better as possible in product design, development, production, inspection, etc. to make our
production can keep orderly. And will continue to make improvement to make sure that
keep the competitiveness.
Welcome friends at home and abroad to visit and guide, work together to create
brilliant.
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Tube
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R
6800.J05.GEM.02.01 V7
Phone
866-960-2920
Http://www.genmaxpower.com/
Caojie Industrial Park,Hechuan District,Chongqing
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