LONGER LK5Pro User manual

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table of Contents
Safety Precautions...............................................................................................................................2
A. Product information........................................................................................................................4
(1) Model parameter...................................................................................................................4
(2) Packing List.............................................................................................................................5
(3) Nozzle module exploded view...............................................................................................6
(4) Machine assembly................................................................................................................. 7
B．Machine operation....................................................................................................................13
（1）Machine control interface description........................................................................... 13
（2）Home interface................................................................................................................18
（3）Move interface................................................................................................................ 18
（4）Tune interface..................................................................................................................20
（5）Utilities interface.............................................................................................................21
（6）Print interface..................................................................................................................22
C. Installation and use of Changlang 3D slicing software............................................................ 26
(1) Software installation............................................................................................................ 26
(2) Model selection........................................................................................................................... 27
(3) Software usage introduction....................................................................................................... 28
(4) Detailed software parameters.............................................................................................28
(5) Export gcode format for printing.................................................................................................29
D. Instructions for printing online.....................................................................................................30
(1) Printer connection............................................................................................................... 30
(2) Software settings................................................................................................................. 30
(3) Online printing..................................................................................................................... 31
(4) Professional settings............................................................................................................ 32
E．Resume printing and filament run-out detection function......................................................33
（1）Power failure................................................................................................................... 33
（2）Broken material detection.............................................................................................. 34
F. Guide to common problems in machine use................................................................................ 35
Question 2:What if the filament does not discharge from the machine?.................... 36
Question 3:.............................................................................................................................. 37
Question 4: What should I do if I cannot resume printing after power shutdown?..... 38
Question 5:................................................................................................................................ 38
When the machine is leveling, the nozzle moves to the left, it can be leveled normally. When
the nozzle moves to the right, it is found that the distance between the nozzle and the
heated bed are very far or very close. If the spring is adjusted to the extreme position, it still
cannot be leveled. What should I do?...................................................................................... 38
Question 6: After the machine heats up, the filament is discharged normally. However, when
the printing is performed for the first time, the curling occurs on the platform. After printing
several layers, the filaments get out of the platform. What can I do...................................... 39

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Safety Precautions
1) The temperature of the nozzle parts can reach 250 °C during the
operation of the machine. To ensure your safety, it is forbidden to touch
the model and nozzle directly with your hand while the printer is
printing or cooling.
2) During the operation of the machine, it is forbidden to reach into the
machine to prevent pinching.
3) The working voltage is 110~220V AC voltage 50HZ AC. The three-pin
socket must be grounded. Do not use other power sources to avoid
damage to components or fire, electric shock and other accidents.
Note: Before powering on, please check whether the input voltage value
of the switching power supply meets the voltage standard of the country
or region.
4) When the machine is working continuously for ≥ 96 hours, it should
be stopped for 1-3 hours.
Consumables
The consumables are not used after unpacking or for a long period of
time after the print model is completed. The consumables should be
taken out of the printer and sealed to prevent the consumables from
being exposed to the air for a long time, causing moisture and affecting
the print quality. At the same time, when the consumables are removed

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The front end of the consumable should be fixed on the tray to avoid
consumables and affect the next print.
To use this printer, it is recommended to use the supplies provided by
the company. At present, the quality of consumables sold in the retail
market is uneven, and printing is prone to breakage.
Staggering and clogging the printer nozzle, etc., and irreversible damage
to the heating components of the nozzle, the extrusion motor and the
extrusion gear. The company will not guarantee the printer due to the
use of consumables other than our company.
Environmental requirements
Temperature requirement: 10°C~30°C, humidity requirement: 20%~50%,
this 3D printer can work normally within this range; beyond this range,
this 3D printer will unable to achieve the best print results.

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A.Product information
(1) Model parameter
model
LK5 Pro
Machine size
580*540*663 MM
frame
Classic aluminum
frame
Machine weight
11KG
Molding
FDM (hot melt
production)
Package
dimensions
622*588*193mm
Number of nozzles
1
Consumable color
Multi-color
optional
Molding size
300*300*400mm
Power requirement
Output 24V
Layer thickness
0.1-0.4mm
operating system
Windows,Linux,MAC
Memory card offline
printing
Support TF card
Interface
language
English
Serial screen
YES
Environmental
requirements
Temperature 10-30 °
C
Humidity 20-50%
printing speed
Not more than
120mm/s
Nozzle
temperature
Room temperature to
250 ° C
Nozzle diameter
0.4mm
Hot bed
YES
Slicing software
Cura,repetier-host
Support
consumables
PLA, ABS, wood,
copper consumables
file format
STL,G-Code,OBJ
Consumable
diameter
1.75mm
Special feature
Inclined rod lattice glass 4.3 inch large touch screen
Blue high temperature Teflon tube

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(2) Packing List

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(3) Nozzle module exploded view
Quick pneumatic joint
Heat sink
Heating block
nozzle
Heater
Thermistor
Sheet metal protective case
3010 fan
4010 fan
Air guide

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(4) Machine assembly

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B．Machine operation
（1）Machine control interface description
Primary
interface
Secondary
interface
Explain
HOME
Nozzle temp
Display nozzle temperature
Heatbed temp
Display the temperature of the hot bed
File
The name of the file
Time
Print time
Progress
Print process
Height
Print height
Pause
time out
Cancel
End
Move
X,Y
X, Y left and right movement and zeroing
Z
Z axis movement
E
In and out of consumables
Distance
Moving distance
Disable
Unlock the motor
Enable
Locking motor
Tune
Nozzle
temperature
Increase\lower
Nozzle temperature
control
Cool
Temperature back to 0 °
C
step（℃）
Temperature control step
size
Heatbed
temperature
Increase\lower
Hot bed temperature
control
Cool
Temperature back to 0 °
C
step（℃）
Temperature control step

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size
Fan speed
Increase\lower
Fan speed control
stop fan
The fan stops rotating
step
Step speed of the fan
speed
Feed rate
Increase\lower
Print speed
magnification
Restore
Restore default (100%)
step
Print speed step size
Nozzle flow rate
Increase\lower
Nozzle flow control
Restore
Restore default (100%)
step
Nozzle flow step size
LEDs
Open \close
LEDs light control
Utilities
Filament
Nozzle temp
Nozzle temperature
display
Heatbed temp
Hot bed temperature
display
Filament type
PLA\ABS
Cool
Nozzle\ Heatbed
Filament change
Feeding/returning
length control
Load\Unload
Feeding/returning
control
Leveling
/
/
/
Print
TF card
Select print file
open
Start printing

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（2）Home interface
（3）Move interface
Motor
unlocked\locked
Print file
parameter
information
Pause
Cancel
XY mobile
interface
Z mobile
interface
XY zero
Z zero
E-axis feed and
discharge
Distance adjustment

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（4）Tune interface
Fan speed
Nozzle flow rate
Feed rate override
Hot bed
temperature
Nozzle
temperature

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（5）Utilities interface
Return material
Hot bed
temperature
return to zero
Feed
Automatic
leveling
control
Temperature
parameter
Nozzle
temperature
return to zero
Consumable
setting control
Consumable
heating option
Nozzle
temperature
adjustment

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（6）Print interface
Five-point leveling page Click the five points in turn to move the
nozzle and then perform leveling operation.
File selection and
display
scroll

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C. Installation and use of Changlang 3D
slicing software
(1) Software installation
Click to enter the next step, select the default C drive for installation, otherwise the software will not
open normally
Double-click the LONGER 3D Slicer 1.3 to enter the installation guide page
Follow the software installation guide reminder and click Next to complete the
installation.