873 Laser level
Maintenance manual
KAPRO
1
Content
1. Basic function……………………………………………………………………3
2. Instrument structure……………………………………………………………4-9
2.1 Final assembly ……………………………………………………………4
2.2 Base assembly………………………………………………………………5
2.3 Shell assembly …………………………………………………………5-6
2.4 Pendulum assembly………………………………………………………7
2.5 Metal feet assembly…………………………………………………………8
2.6 Battery box assembly………………………………………………………8
2.7 Electrical jobs chart…………………………………………………………9
3. Inspection and calibration of the instrument …………………………………10
3.1
Instrument accuracy
……………………………………………………………10
4. Common fault and eliminating methods………………………………………10
4.1
Don’t start up
…………………………………………………………………10
4.2 No
laser line after startup
…………………………………………………
10
4.3 Cannot level himself after startup ……………………………………………10
2
5. SPEC………………………………………………………………………………11
1.
Basic function
The instrument can project three mutually orthogonal laser lines - one horizontal and two vertical.
Laser lines forms two intersections - on the wall and on the sealing - as shown on the picture
below.
3
4
2.
Instrument structure
2.1
Final assembly
NO
.
NAME Drawing NO. QUANTITY
1 873 Base assembly
KTL873-01
1
2 873 Pendulum assembly KTL873-02 1
3 cross recessed small pan head screws
gb,M2.5*6
4
4 873 Battery box assembly KTL873-05 1
5 GB_CROSS_SCREWS_TYPE1 M3X6-6 H type-N
2
6 873 Casing assembly KTL873-03 1
7 873 Metal foot assembly
KTL873-04
2
8
872
The center shaft
4
5
9 GB_CROSS_SCREWS_TYPE128 ST2.9X13 H F-N
4
10
862 the key soft mat
3
11
872
main panel label
1
2.2. Base assembly
NO. NAME Drawing NO. QTY
1 873 shaft insert
KTL873-01-03
1
2 GB_CROSS_SCREWS_TYPE1 M2.5X6-6 H type-
N
2
3
plain washers--product grade c gb,n3
1
4 cross recessed pan head screws gb,M2.5*8 3
5
872 Base insert LA-10-872
1
6
6
873 base KTL873-01-01
1
7 cross recessed pan head tapping screws
gb,ST2.9*9.5
4
8 GB_CROSS_SCREWS_TYPE1 M2X8-8 H type-N
2
9 873 switch
KTL873-01-09
1
10 873 left support
KTL873-01-05
1
11
872 Spring LA-10-872
1
12 873 right support
KTL873-01-06
1
13
872 Guide pillar-2 LA-10-872
2
14
872 Guide pillar-1 LA-10-872
1
15
872 cam LA-10-872
1
16 873 magnet
KTL873-01-08
4
17 873 magnet holder
KTL873-01-07
1
18
873 conductive alarm ring .
1
19 873 Earth terminal
.
1
20 873 lock ring
KTL873-01-02
1
21 cross recessed pan head tapping screws
gb，ST2.2*6.5
1
22 873 Locking switch KTL873-01-04
1
2.3. Shell assembly
7
NO. NAME Drawing NO.
QTY
1
873 casing KTL873-03-01
1
2 873 window glass-Vertical
KTL873-03-04
2
3
873 window glass -Horizontal
KTL873-03-05
1
4 cross recessed pan head
tapping screws gb,st2.2*6.5
6
5
873 Vertical glass support
KTL873-03-03
2
6 873 Horizontal glass support
KTL873-03-02
1
2.4. Pendulum assembly
8
NO
.
NAME Drawing
NO.
QTY
1 872 center shaft 1 1
2 872 center shaft 2 1
3
873 roof
1
4 873 pendulum
1
5
hexagon socket set screws with cup point
gb,M2.5*4
12
6 872 line laser 3
7
hexagon socket set screws with cup point gb,M3*8
12
8
hexagon socket set screws with cup point gb,M3*5
6
9
hexagon socket set screws with cup point gb,M3*10
4
10 873 Adapter board
1
11 872 Pressure ring 4
9
12 bearing
4
13 873 main board
1
14 GB_CROSS_SCREWS_TYPE1 M3X6-6 H type-N
1
15 873 Copper sheet
1
16 873 Copper sheet screw
1
17
cross recessed small pan head screws gb,M2.5*6
2
18 873 Conductive rubber ring
1
19 GB_FASTENER_SCREWS_HSFP M2.5X6-N
1
2.5
.Metal feet assembly
NO. NAME Drawing NO. Material Quantity
1 872 Metal feet Q235 1
2 872 Metal feet left POM 1
3 872 Metal feet right POM 1
10
4 873 Resin feet sleeve NBR 1
2.6. Battery box assembly
NO. NAME Figure NO. Material Quantity
1
872 The battery box LA-10-892-501 ABS 1
2
872 Positive terminal LA-10-892-502 65Mn 3
3
872 spring terminal LA-10-892-503 65Mn 3
4
872 battery cover LA-10-892-504 1
2.7
Electrical jobs chart
11
3.
Inspection and calibration of the instrument
3.1. Instrument accuracy
H Laser line ±2mm/10m
V1 Laser line ±2mm/10m,
12
V2 Laser line ±2mm/10m
If the instrument accuracy is poor, unscrew the four #9 screws as shown in fig. 1, open the shell and
calibrate the device.
4.
Common faults and eliminating methods
4.1
Don’t start up
Cause analysis:
(1) Three dry cells working voltage is lower than 3 V
(2)The power plug contact with the motherboard is insufficient
(3) The travel switch contact is insufficient
Troubleshooting:
(1) Replace the batteries in time
(2)Open the shell, reinstall the power plug
(3) Open the shell to adjust the position of the switch
Note: keyboard or motherboard damage can also cause “don’t start up” (less likely), open the shell to
replace the main board.
4.2
No
laser line after startup
Cause analysis:
(1) Instrument tilt is too large, beyond the self-leveling range
(2) laser diode to main board contact is poor or broken
Troubleshooting:
(1)Adjust the tilt of the device to work within the self-leveling range
(2) Open the shell to repair the laser diode to main board contact
Note: keyboard or motherboard damage can also cause “
No
laser line after startup” (less likely), open the
shell to replace the main board.
4.3
Cannot level himself after startup
Cause analysis:
(1) The pendulum stuck due to oxidation/corrosion of bearing surface
(2) The pendulum stuck due to contamination / debris near alarm ring
Troubleshooting: (1) Open the shell to replace the damaged bearings
(2) Open the shell to clear the alarm ring area from contamination / debris
13
5. SPEC
14
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