LONGER LK2 User manual

zz

目录
A. Product information........................................................................................................................3
(1) Model parameter...................................................................................................................3
(2) Machine introduction............................................................................................................ 4
(3) Nozzle module exploded view...............................................................................................4
(4) Machine assembly................................................................................................................. 5
1. Gantry installation...........................................................................................................6
2. X-axis installation.............................................................................................................7
3. Mounting the x-axis beam............................................................................................ 10
4. Install the gantry upper beam.......................................................................................10
5. Mounting screw.............................................................................................................10
6.Install Teflon tube...........................................................................................................11
7.Install the z-axis limit switch.......................................................................................... 12
8.Mounting aluminum substrate...................................................................................... 12
9. Wiring............................................................................................................................ 13
10. Screen wiring...............................................................................................................13
11.Mounting rack and glass.............................................................................................. 15
12 .Assembly completed...................................................................................................15
（5）Power regulation...........................................................................................................16
（6）leveling method...............................................................................................................17
B．Machine operation....................................................................................................................18
（1）Machine control.............................................................................................................. 18
（2）Main interface................................................................................................................. 19
C．Cura installation and operation software................................................................................. 20
（1）Slice software offline printing instructions.....................................................................23
（2）Software parameter setting............................................................................................ 26
D．Operation for online printing....................................................................................................29
E．Resume printing and filament run-out detection.....................................................................32
（1）Power outage recovery................................................................................................... 32
（2）Filament run-out detection.............................................................................................32
F．FAQ.............................................................................................................................................34
Question1: How to update the firmware?.........................................................................34
Question 2:What if the filament does not discharge from the machine?...................... 34
Question 3: When the machine returns the filament, it can't be returned. What should
I do when stuck in the pneumatic joint?............................................................................. 35
Question 4: What should I do if I cannot resume printing after power shutdown?..... 35
Question 5: 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?........... 36

1
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

2
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%.

3
A.Product information
(1) Model parameter
Model
LK2
Machine size
402*382*655mm
Material
Aluminum alloy
Consumable color
Multi-color optional
Printing Technology
FDM
Package dimensions
467*412*187mm
Extruder
1
Packaging Weight
8.6kg
Build Volume
220*220*250mm
Power requirement
Output 24V
Layer thickness
0.1-0.4mm
operating system
Windows,Linux,MAC
Connection
USB Cable of TF
card
Interface language
English
LCD screen
YES
Environmental
requirements
Temperature 10-30 ° C
Humidity 20-50%
Printing speed
Up to 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
File format
STL,G-Code,OBJ
Consumable
diameter
1.75mm

4
(2) Machine introduction
(3) Nozzle module exploded view
Gantry
Hot bed
Motherboard
Rack
Nozzle module
Extruder module
Foot
power supply
Quick pneumatic joint
Heat sink
Heating block
nozzle
Heater
Thermistor
Sheet metal protective case
3010 fan
4010 fan
Air guide

5
(4) Machine assembly
Upper packaging
Lower packaging
Assembled

6
1. Gantry installation
The screw used is M5*20
Two blue boxes in the picture, need
to be in one direction

7
2. X-axis installation
a
Screws are all M4*16
If the nozzle block wheel cannot enter, use a
wrench to adjust the eccentric nut.

8
Box side up

9
The tension of the belt can be adjusted by
the two screws on the box

10
3. Mounting the x-axis beam
4. Install the gantry upper beam
5. Mounting screw
If the wheel does not fit in, you can adjust
the wheel with the eccentric nuts on both
sides. Let the X-axis beam enter
Use 4 M5*20
Use 2 M4*16

11
6.Install Teflon tube
Let the lead screw snap into the
coupling and the motor shaft is also
aligned with the lead screw. Tighten
the top wire
Adjust the screw movement by
adjusting these two screws. The two
screws cannot be tightened too tightly.
Turn the coupling by hand to adjust
the movement of the lead screw.
note
Teflon tube and
line direction

12
7.Install the z-axis limit switch
8.Mounting aluminum substrate
Z-axis limit opening
installation is about
15mm from the base
(this is adjustable)

13
9. Wiring
1. X motor line 2. X limit switch line 3. E-axis motor line
4. E-axis break detection 5. Z-axis motor line 6.Z-axis limit switch
10. Screen wiring
1
2
3
4
5
6

14
Next to the z-axis motor profile
Next to the power profile
The cable tie can't be too tight

15
11.Mounting rack and glass
12 .Assembly completed

16
（5）Power regulation
If the access voltage is 220V, please
adjust the power supply in the
control box to 220V, please be sure
to confirm before powering on.
Otherwise it will burn the power
If the access voltage is
110V, please adjust the
power supply in the
control box to 110V, please
be sure to confirm before
powering on. Otherwise it
will burn the power

17
（6）leveling method
You can manually click the XY zero
and Z zero in the Movement
interface, then unlock, manually
move the hot bed and the nozzle,
and then adjust the leveling nut so
that the distance from the nozzle
to the hot bed is about one A4
paper thickness.。
Turn on the machine, click the levelling button, click
the four buttons in turn, the nozzle will move to the
corresponding position correspondingly. After
waiting to move to the corresponding position, you
can manually adjust the hand nut to adjust the
distance between the nozzle and the hot bed to
approximately one A4. Thicken the paper, tighten
the screw [tighten counterclockwise], and increase
the distance between the heating plate and the
nozzle. Loosen the screw [screw in the clockwise
direction] and the heating plate will be close to the
nozzle. Adjust the other three points in turn to
complete the leveling.

18
B．Machine operation
（1）Machine control
±X.±Y.±Z（正负移动）
暂停打印
Hotbed temperature
speed of fan
Nozzle temperature
printing speed
Discharge flow
distance
more
return