Elegoo Neptune 2 User manual

User Manual
for Neptune 2 \ Neptune 2S
3D Printer
Pictures are only for illustration purpose, please take actual product as standard.

Thank you for choosing ELEGOO product!
For your convenience, please read this instruction manual carefully before use, the cautions and
tips in this manual can help you better avoid incorrect installation and use.
For questions or problems not covered in this manual, please contact us at this email address:
[email protected].
ELEGOO team is always ready to provide you with quality service.
To give you a better experience of our products, you can also gain knowledge of the operation of the
equipment in the following ways：
1.The instruction manual: You can find the relevant operating instructions and videos on how to
operate the machine in the TF Card.
2.ELEGOO official website: www.elegoo.com You can go to our official website to find the relevant
operating instructions for the machine and contact information.

Cautions
1. Do not place the printer in vibrating or other unstable environments, as the shaking of the machine
will affect the print quality.
2. Do not touch the nozzle and heatbed when the printer is working to prevent high-temperature
scald and personal injury.
3. After printing, please take advantage of the residual temperature of the nozzle and clean the
filaments on the nozzle with the help of tools. Do not touch the nozzle directly with your hands during
cleaning to avoid scald.
4. Please do product maintenance frequently, and regularly clean the printer body with a dry cloth to
wipe away dust and sticky print material under the situation of power off.
5. 3D printers contain high-speed moving parts, so be careful not to get your hands caught.
6. Children must be supervised by adults when using the machine to avoid personal injury.
7. In case of emergency, please cut off the power directly.

Contents
Machine Parameters ----------------------------------------------------
Machine Structure Diagram --------------------------------------------
Packing List ----------------------------------------------------------------
Machine Installation ------------------------------------------------------
Operation Screen Introduction ----------------------------------------
Platform Leveling ---------------------------------------------------------
Model Test ------------------------------------------------------------------
Software Installation -----------------------------------------------------
Online Print ----------------------------------------------------------------
Troubleshooting Guide -------------------------------------------------
Circuit wiring -------------------------------------------------------------- 22
21
19
17
16
14
10
4
3
2
1

Machine Parameters
Print Parameters
Print Principle：FDM（Fused Deposition Modeling）
Build Volume：220X220X250(mm³)
Print Precision：±0.1mm
Nozzle Diameter：0.4mm
Print Speed：30~180mm/s（60mm/s is recommanded）
Temperature Parameters
Ambient Enviroment Temperature：5°C~40°C
Maximum Temperature of Nozzle：260°C
Maximum Temperature of Hotbed：100°C
1
Software Parameters
Slicer Software：Cura
Input Format：STL、OBJ
Output Format：Gcode
Connection Type：TF Card、USB Wire
Power Supply Parameters
Power Input：100-120V/200-240V
Power Output：24V
Physical Parameters
Machine Dimensions：430X426X613
Neptune 2 Machine Weight：6.9kg
Neptune 2S Machine Weight：7.3kg

Power
supply
PTFE tube
Nozzle kit
Filament holder
Touch screen
leveling nut
Z-axis limit
switch
X-axis
slave kit
Build
Platform
X-axis
stepper
Y-axis stepper
Z-axis
stepper
Extruder stepper
Filament tube
X-axis limit
switch
Y-axis limit
switch
Y-axis
slave kit
Power Switch
Machine Structure Diagram
2

Packing List
Spanner
Tools
01 02 03 05
06 07 08 09 10 11 12
04
13 14 15 16 17 3
（KM4*20）2pcs
（PM4*18）4pcs
（HM5*45）4pcs
（HM5*25）4pcs
（HM4*18）2pcs
（HM4*20）2pcs
ELEGOO 3D Printer
（SW M4）2pcs

（HM5*45）4pcs
02
07
06
01
The end with
holes of the
aluminum
profile should
face down
The end with
short holes
distance
The end with
long holes
distance
4
Machine Installation
（HM4*20）2pcs+(SW M4) 2pcs
The TF card of the machine comes with an installation instruction video.

（KM4*20）2pcs
04
（HM4*18）2pcs
10
05
5
Installation height
is about 5mm

（PM4*18）2pcs
11
08
17
6
The end
with long
holes
distance
The end
with short
holes
distance
The end with long
holes distance

Tighten the synchronous belt
and lock the screws
（PM4*18）2pcs
7
12
Mounting the
synchronous belt
around the bearing
03
Belt chute
The metal eccentric spacer can be
loosened before installation so that
the pulley slides smoothly into the
profile, and after installation the
metal eccentric spacer can be
properly tightened again so that
the print head does not wobble.

09
（HM5*25）4pcs
8
Once the installation
is complete the
screws on the screw
nuts here can be
properly tightened.
The metal eccentric spacer
here can be loosened before
installation to allow the pulley
to slide smoothly into the
profile and then tightened
appropriately after installation.

X
Y
Z
E
X
Z
Y
13 14
9
Filament
detector

Main Menu
Tool：Click to enter the tool interface, the machine can be tested to preheating,
leveling, moving, extruding, etc.
Settings：Click to enter the settings interface to set the language and fan or query the
firmware version as required.
Printing：Click to enter the printing interface, select the print file, and then start
printing.
Preheat：Click to enter the preheat interface, select 【Extrusion】 or 【HeatBed】 and set
the temperature to start heating. (You can switch to 【HeatBed】 by clicking 【Extrusion】)
Move：Click to move the X-axis, Y-axis, and Z-axis manually.
Home：Set all axes back to the zero position or select one of the axes and set it to the zero
position.
Extrude：First heat the nozzle, set the length of the filaments, and then check if the nozzle is
discharging properly by clicking 【In】and 【Out】.
Leveling：Leveling five points, fine-tune the distance between the nozzle and the platform
by leveling nut under the heatbed when the nozzle is moving to the position of each point.
Filchange：The filaments can be replaced by clicking 【Filchange】.
Tool Interface
Operation Screen Introduction
10

Operation Screen Introduction
11
Settings Interface
Fan：Control side fan operation.
About：Check the firmware version.
Language：Click to change languages: Japanese, German, English, Russian,
Spanish, French,Italian, Chinese.
Motoroff：Turn off the stepper that is running or free a locked stepper.
Continue：Continue printing at a certain layer position of the model.
Printing Interface
File：Select the model file and comfirm to start printing.
Up Arrow/Down Arrow: Page up and page down.
Crooked Arrow：Back to the main menu.

Description of Special Function：
Continue：
lThis function allows you to resume printing if you want to continue printing after the model
has been interrupted by a misoperation.
lFirst click 【Tool】-【Home】, observe if the model will collide by setting the X/Y/Z axis to
zero in sequence. (If a collision occurs, turn off the power immediately, this function
cannot be used.)
lThen click 【Back】-【Move】, move the Z-axis to the height of model interruption, then
move the X/Y axis again, and move the nozzle to the top of the model. Observe whether
the nozzle is level with the model section or there is a gap of about 0.1mm. (The print
head should not be lower than the height of the model interruption position, or model
collision will occur during printing.).
lFinally, select 【Settings】 on the menu, click 【Continue】, and then select the model
file you want to continue printing.
lWait for the temperature of the nozzle and heatbed to reach the preset temperature, in the
meanwhile, start to read the previous printing information up to the height of the
interrupted printing position, then the X and Y axes will back to zero one after another, and
then it will start printing.
12

13
Continue：If you want to continue printing because of a sudden power
outage or accidentally turn off the power of the machine, this function does
not need to be set manually. When the printer is reconnected to the power
supply and turned on, just click resume to continue.
Filaments Detection：This function is designed to effectively prevent the
model from being scrapped after running out of filaments during the printing
process by alerting the user that filaments need to be replaced before the
model can be printed again.

Platform Leveling
lIn the process of printing, we need to level the platform in order to
make the base of the model stick to the build platform and not
falling off.
lThe best distance between the nozzle and the platform is 0.1mm-
0.2mm, and you need to prepare an A4 paper to assist in leveling.
1.First, make sure that all the cables are connected, and then turn on
the printer.
2. Click【Tool】in the main menu to enter the tool interface and then
click【Leveling】.
3. Place a piece of A4 paper between the nozzle and the platform. Click
the leveling point, and the nozzle will move to each point of the platform
accordingly. Adjust the leveling nut under the platform. (Loosen the nut
clockwise, then the platform will rise; otherwise, the platform will fall).
4. Make sure the nozzle and A4 paper just touch, the paper can move
smoothly and there is friction force when moving the paper.
5. Level the point 2, 3, 4 and 5 in the same way.
lAfter the leveling is completed, the distance between the platform
and the nozzle must be verified (1-2 times) according to the above
steps ① → ② → ③ → ④ to avoid scratching the platform plate.
A4
paper
14

Supplymentary Introduction
Special Case 1：
①：When the machine returns to zero, the nozzle is far lower than
the platform. (Even if the four leveling nuts below the platform are
tightened, the nozzle is still pressing against the platform.)
②：When the machine returns to zero, the nozzle is far higher than
the platform. (Even if the four leveling nuts below the platform are
loosened, the nozzle is still a certain distance from the platform.)
Solution：Adjust the Z limit switch up (down) to the proper position.
Special Case 2：
① ：The bottom slide block has been adjusted before leaving the
factory, but the pulley of the machine may become loose due to the
transportation. If the build platform of the machine is shaky and loose,
an open spanner can be used to slowly twist the eccentric isolation
column under the platform until the slide block slides smoothly and
does not shake.
15

Model Test
Extrusion inspection
1) Push the filaments to the bottom of the print head.
2) Click【Tool】- 【Extrude】 , and then click 【In】, the nozzle
temperature will be automatically heated to 200°C.
3) After the nozzle is preheated to 200°C, click [In], and the filaments can
be spun out normally from the nozzle. The speed of extrusion can be
selected as low, medium or high.
4) Please clean off the extruded filaments from the nozzle before printing.
Start printing
1）Insert the TF card into the card slot of the printer.
2) Click 【Printing】 on the main menu and select
the model file.
3) When the nozzle and the heatbed reach the
preset temperature, the X, Y, Z axis will return to zero,
and then start printing.
Tips：
When printing the test model, please observe the printing
situation of the first layer. If the situation of A and C appears
in the first layer, it proves that the five-point leveling is not
well adjusted, so it is necessary to fine-tune the leveling nut
under the platform or reset the platform. If the situation of B
appears in the first layer, it proves that a good printing
distance has been reached between the nozzle and the
platform, and printing can be continued. 16
The nozzle distance to the
platform is too close, so
the leveling nut under the
platform needs to be
tightened to fine-tune or
re-level.
The distance between
the nozzle and the
platform is moderate,
extruding the right
amount of filaments, and
evenly adhering to the
platform.
The nozzle is too far away
from the platform, and the
adhesion is not good, which
may easily cause the model
to leave the platform during
the printing process, so it
needs to be releveled.
ABC