NHT YCJ-3000B User manual

YingKou NHT Heavy Machinery Co., Ltd
Super-Thin Double Scissor Lift
YCJ-3000B
User Manual
MANUFACTURER:
YINGKOU NHT DEVELOPMENT CO., LTD
31Jinquan Street, Advanced and Fresh Indu
stry Technique District, Yingkou City, Liaoning Province,
P.R.China
PC: 115004
Telephone: [phone]
Fax: [phone]
Website: www.nhtequipment.com

YingKou NHT Heavy Machinery Co., Ltd
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VERY IMPORTANT INSTRUCTION BEFORE USE THE MACHINE .............................2
1. HYDRAULIC SYSTEM ............................................................................................................4
2. PNEUMATIC SYSTEM ............................................................................................................6

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Very Important Instruction before use the machine
Once we assembled the lift and fill out the oil tank with hydraulic oil then we must adjust
the lift to make sure that all the cylinders have oil and without air inside. Please follow my
below steps:
1. Please check the below two pictures which show you the control panel of the lift. There
are buttons for lift up/down and buttons for lift platform adjustment if the two platforms
are not at the same level----Debug button A and 1,2,3,4.

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2. Operation without the car:
(1) Press “up” to make the lift goes up to middle height around 1200mm.
(2) Press “A”+“1” together to make left platform goes up around 5cm.
(3) Press “A”+“2” together to make the right platform go up to same level as
left platform.
(4) Press “A”+“1” together to make left platform go up around 5cm.
(5) Press “A” +“2” together to make the right platform go up to same level as
left platform.
(6) Press “A” +“3” together to make the left platform go down around 5cm.
(7) Press “A” +“4” together to make the right platform go down to same level
as left platform.
(8) Press “A” +“3” together to make the left platform go down around 5cm.
(9) Press “A” +“4” together to make the right platform go down to same level
as left platform.
(10) Press “up”and “Down”to check if the two platforms are at the same level.
If it is then we can drive car onto it. Otherwise we must repeat steps from (1)
to (10).
Only by this way the lift will works well and no cylinder damage.
If we directly lift car and down without above
adjustment the cylinder will broke!

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1. HYDRAULIC SYSTEM
The hydraulic system is installed in the control box, the pump (see fig.5) presents
immediately when opening the front cover of control box.
See fig.6-1 connection diagram of motor, integrate block, valve and cylinder, fig. 6-2
hydraulic system principle diagram, adjust “throttle” could alter lowering speed,
adjust “slipping valve” could alter system pressure (regulated before leave factory)
and loading capacity (within rated oil pressure 22Mpa).
Fig. 5 HYDRAULIC PUMP STATION
Note:
1．If you press the UP button there will be oil out from the main oil valve
maybe 14. This one should connect with C.
2．Then for other two Oil valve maybe 12 and 13 you can connect with A or B as
you wants randomly!
3．Then for the pipe from the cylinder just connected as below:
1-----4-----C--------------Mail Oil valve-----14
2-----6-----B -------------Oil valve-----------13
3-----5-----A ------- ------Oil valve-----------12
Fig. 6-1 HYDRAULIC SYSTEM JOINT
Serial No.
Name
Serial No.
Name

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1
1620mm High pressure rubber pipe
7
Solenoid discharge valve
2
1620mm High pressure rubber pipe
8
Unilateral valve
3
1620mm High pressure rubber pipe
9
Motor
4
215mm High pressure rubber pipe
10
Slipping valve
5
215mm High pressure rubber pipe
11
Throttle valve
6
215mm High pressure rubber pipe
12
Solenoid valve
A
2800mm High pressure rubber pipe
13
Solenoid valve
B
2800mm High pressure rubber pipe
14
Solenoid valve
C
2800mm High pressure rubber pipe
15
Pressure gauge
For primary using of the lift, pay attention to rotated direction of the motor (see
fig.6-1) when connecting wires. It is may result for damage of gearing pump if rotate in
reverse direction for a long time.
Fig. 6-2 HYDRAULIC SYSTEM PRINCIPLE DIAGRAM
Desire for lowering the platforms in power cut condition, at first, cut off power supply
to prevent from incoming electricity. Secondly, if the gears had been locked, use small
iron plate lays over the gears，otherwise, use jack or other manual assistant tools lift the

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platforms more or less, then cover the gears with iron plate. Third, open the front cover of
control box and unscrew (anticlockwise) the golden bolt of the solenoid discharge valve,
at the same impulse terminal center thimble, then the platforms will be lifted.
Tighten (clockwise) the bolt while the platform lowed at the required position,
otherwise, the platform can’t be lifted if power supplied.
2. PNEUMATIC SYSTEM
Pneumatic system principle diagram (see fig. 7), compressed air must be passed water
filter, the inflation inlet is near the oil sprayer which on the right of the control box.
Whenever up or down the “two-phase and three-way valve” gets electricity, the cylinder
carries the locking block up. When the electricity is putted out the spring inset the
cylinder will pullback the locking block.
Fig. 7 PNEUMATIC SYSTEM PRINCIPLE DIAGRAM