GENMAX GM5500i User manual

WARNING: SAVE THIS MANUAL FOR FUTURE REFERENCE
INVERTER GENERATOR
USER'S MANUAL
RGENMAX GENERATOR
GM5500i
Portable Inverter Generator
5000 Running Watts | 5500 Peak Watts
GM6000iED
Portable Inverter Generator
5250(GAS.)/4750(LPG) Running Watts | 6000(GAS.)/5500(LPG) Peak Watts
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, oil and 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)
Duplex plug (GM6000iED only)(1)
Four-prong plug (GM6000iED only)(1)
Remote Control Key (GM6000iED only)(1)
LPG Hose (GM6000iED only)(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
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 durat ion of the warranty period.
6. WHAT IS NOT COVERED UNDER THIS WARRANTY:
A. Transportation changes for s ending 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 norne by the purchaser.
8. HAVE QUESTIONS?
Email: [e-mail] Phone: [phone]
Model Number: _____________________________________
Name: ___________________________________________
Serial Number: ______________________________________
Street Address: ___________________________________
Date Purchased: ____________________________________
Purchased From: ____________________________________
City, State, ZIP: ____________________________________
Country: __________________________________________
Phone Number: ___________________________________
E-Mail: ___________________________________________
WARRANTY CARD
R

3
TABLE OF CONTENTS
LIMITED WARRANTY 2
SAFETY WARNING 4
SAFETY INSTRUCTIONS 5
NAMES OF COMPONENTS 7
CONTROL FUNCTIONS 8
PREPARATIONS 11
1.Fuel............................................................................................................................................11
2.Oil...............................................................................................................................................11
3.Pre-operation inspection............................................................................................................12
STARTING UP THE GENERATOR 13
SHUTTING DOWN THE GENERATOR 16
USING THE GENERATOR 17
1.Service environment of the generator.......................................................................................17
2.Generator wiring........................................................................................................................17
3.Generator grounding.................................................................................................................18
SERVICE AND MAINTENANCE 19
1.Spark plug inspection...............................................................................................................20
2.Adjustment of the carburetor.....................................................................................................21
3.Replacement of oil....................................................................................................................21
4.Air filter......................................................................................................................................22
5.Fuel filter screen........................................................................................................................23
STORAGE AND TRANSPORT 24
1.Generator storage.....................................................................................................................24
2.Generator transport...................................................................................................................25
TROUBLESHOOTING 26
TECHNICAL PARAMETERS 27
CIRCUIT DIAGRAM 28
CHOOSING A GENERATOR 31

4
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

5
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

6
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.

7
NAMES OF COMPONENTS
Telescopic rod
Fuel tank cap
Control panel
Left enclosure
Start handle
Muffler
Wheel
Right enclosure
LPG Port
(GM6000iED only)

8
CONTROL FUNCTIONS
① 120-Volt, 20-Amp Duplex Outlet (NEMA 5-20R):
The outlet is capable of carrying a maximum of 20
amps.
② USB Duplex: 5V DC that come in 1 amps and 2.1
amps.
③ AC 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 Efficiency Mode Switch: 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 Multifunction Digital Display Meter: Yellow light
means that the amount of oil is too low, red light
means that the machine overload, green light means
normal operation; Power display on the left, oil level
display on the right; Rolling display mode,
respectively display accumulative running time, output
voltage, frequency rolling display mode.
CONTROL PANEL FEATURES GM5500i
AC 120V NEUTRAL FLOATING AC 120V NEUTRAL FLOATING
AC BREAKER
AC BREAKER
CIRCUIT BREAKER
ON
OFF
AC 120V/240V
NEUTRAL FLOATING
AC RESETCO ALARM ECO.SW.
DC 5V 1A/2.1A
SYSTEM FLOATING
10
11
⑦ AC Breaker: If the inverter is overloaded, the
reset breaker will trip to block current.
⑧ Engine Switch: Control the operation and
shutdown of generators.
⑨ 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.
⑩ 120-Volt, 30-Amp Outlet: The outlet is capable of
carrying a maximum of 30 amps.
⑪ Circuit Breake: A circuit breaker interrupts the
current when the whole circuit is overloaded.

9
CONTROL FUNCTIONS
CONTROL PANEL FEATURES GM6000iED
① 120-Volt, 20-Amp Duplex Outlet (NEMA 5-20R):
The outlet is capable of carrying a maximum of 20
amps.
②USB Duplex: 5V DC that come in 1 amps and 2.1
amps.
③ Reset Breaker: 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 Fuel Source: GAS/LPG valve that changes the
fuel into the engine.
⑦ AC Breaker: If the inverter is overloaded, the reset
breaker will trip to block current.
⑧ Main Switch: Manage battery power and
shutdown.
⑨ 120-Volt, 30-Amp Outlet : The outlet is (L5-30)
capable of carrying a maximum of 30 amps.
11
10
⑩ 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.
⑪ One Push Start: Press this button, the engine can
start and stop.

10
CONTROL FUNCTIONS
DIGITAL DISPLAY CENTER
① HOURS: Represents single run time, goes from 0
at each startup.
② HOURS: Represents total operation time of the
generator. The two factors ① and ② are displayed
alternately every 8 seconds.
③ GASOLINE FUEL METER: Gasoline fuel level
display.
④ VOLTAGE: Voltage display: 120V and 240V switch
every 16 seconds.
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.

11
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: 3.6gal
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.
Turn the knob ON the oil maintenance cover
clockwise to "ON", Unscrew oil dipstick;
2.
Fill in 0.21gal oil (SAE 10W/30 oil is
recommended, of which the grade is API
standard Type SE or higher);
3.
Don't go over the scale
Reassemble oil cover plate and tighten the knob.
4.

12
PREPARATIONS
Pre-use Inspection
3
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
Fuel
• Check fuel level in fuel tank of the generator, and fuel it if necessary.
Oil
• Check oil level of the generator, and fill 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.

13
STARTING UP THE GENERATOR
Remove the load from all output ends;
1.
GM5500i Startup Procedure
Connect battery line before first use:
1. Open the oil maintenance cover;
2. Connect the positive and negative electrodes of the battery.
2.
Press the ECO switch to "OFF";
3.
Select boot Mode:
a. Hand Starting:
1. Turn engine switch to "START";
2. First gently pull startup handle, until guy cable is hooked tight, and then pull it with effort;
3. After the generator starts, turn the four-in-one switch to "ON".
4.
Plug in after started.
5.
b. Electrical Starting :
1. Turn engine switch to "START";
2. Press the red button for 3-5 seconds and release;
3. Then flip the four-in-one switch to "ON".
1. 2. 3.
1. 2. 3.

14
STARTING UP THE GENERATOR
Press the LOW IDLE switch to "OFF";
4.
Press the main switch to "ON";
5.
Select the Fuel:
a. Gasoline: Turn the oil/gas switch to gasoline;
b. LPG:
1. Connect the LPG hose to the LPG tank;
2. Tighten the other end of the LPG hose to the generator intake;
3. Turn the fuel source switch to LPG.
3.
1. 2. 3.
GM6000iED Startup Procedure
Remove the load from all output ends;
1.
Connect battery line before first use:
1. Open the oil maintenance cover;
2. Connect the positive and negative electrodes of the battery.
2.

15
STARTING UP THE GENERATOR
Select Boot Mode:
a. Hand Starting: Pull the starting handle to start the generator.
b. One Button to Start: Press the one-click start button to start the generator.
c. Remote Start: Press the "START" button on the remote control to start the generator.
6.
a. b. c.
Plug in after started.
7.
Remote Control Pairing
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.
Tip: The remote control delivered with the generator has been paired successfully.
1. 2. 3.1 3.2

16
SHUTTING DOWN THE GENERATOR
Unplug the power cord;
1.
Select Stop Mode:
a. One Button to Start: Press the one-click start
button to turn off the generator.
b. Remote Start: Press the "STOP" button on
the remote control to turn off the generator.
2. a. b.
Press the main switch to "OFF";
3.
Turn the oil/gas switch to middle to turn off gasoline /LPG.
4.
Unplug the power cord;
1.
Turn the four in-one switch to "OFF", the generator stops running.
2.
GM5500i shutdown procedure
GM6000iED shutdown procedure

17
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

18
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.

19
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 yeara (Please replace if ecessary)
√
√ √
√
√ √
√
√
√
√
√*
√
√
√
√
* heseT items shall be replaced if necessary;
** heT se 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.