The Operating Instruction of CNC Waterjet Cutting Machine
1. The operator must be trained professionally before real operating.
2. The operator shall be acquainted with instruction of waterjet cutting machine, and operate according to the Operating Instruction strictly, laypeople forbidden.
3. Please check whether power supply, water supply and air supply are in place before starting up.
4.  Ensure the environment temperature not lower than 10°C.
5. Confirm the inlet water pressure not less than 0.2MPa, and the pressure not less than 0.6MPa
6. Make sure the storage tank of deionization system there being always saturated brine salt. (Namely industrial salt)
7. Deionization system may not power off. (After power off shall be in accordance with the instructions to adjust the regeneration time)
8. Make sure the automatic lubrication pump oil level is higher than the minimum oil level.
9. Unscrew the overflow valve after high pressure system maintenance, and then adjust working pressure gradually, after pressure maintaining for 3 minutes to work normally.
10. Must replace water filter cartridge timely for high pressure system and deionization system.
11. Cutting operations shall be behind the machine back to the mechanical zero point
12. Removing high pressure parts forbidden when existing pressure inside the equipment.
13. Putting hand under the cutting head is strictly forbidden
14. Equipment should be accurately grounding, it is strictly prohibited to maintain and repair electrical components when existing pressure.
15. Turn off the power, water and air sources when equipment is not in use.
16. Wipe the machine every day before off work, ensure the equipment clean.
 
 
Water jet cutting machine regular maintenance instruction:
                                 

No.	Iterm		period	Tools and methods	standard
1	High pressure system	If water or oil leakage from the cylinder head observation hole or not	Per shift	Sight check	The oil leakage frequnency from the cylinder observation hole,could not exceed 20 drops
2		If water leakage from outlet pipe and every joint or not	Per shift	Sight check	Every connection joints observation hole without water leakage
3		If oil leakage from every joint and connection of oil system	Per shift	Sight check	Every connection joints without oil leakage
4		If heat generated from High and low pressure one-way valve or not	Per shift	Touch with hand	The same temperature in both of the high and low pressure one-way valve body and other parts
5		Grinding low pressure one-way valve core, valve pad	Every100 hours	grinding plate and the metallographic sandpaper	Smooth surface without any defect
6		grinding high pressure one-way valve core, plug	Every100 hours	grinding plate and the metallographic sandpaper	Smooth surface without any defect
7		Change the water filter cartridge	every 300 hours		The pressure difference is higher than 0.1 MPa
8		Replace the high pressure sealing ring	Every 400 hours	High pressure seal disassembly tooling	Installed in the right direction, no leakage
9		Replacement of low-pressure valve core, screws	Every 500 hours		Abrasive valve core and plug head flat to flat without any defects, screw thread in the thread glue
10		Replace the high pressure one-way valve core, valve pad, spring	Every 500 hours		Abrasive valve core, valve cushion flat to flat without any defects, no dead point card dead after spring load
11		Replace the low pressure sealing	Every 2000hours /1 year	Take doen the tooling for low pressure sealing	Installed in the right direction, no leakage
12		clean oil tank and replace the hydraulic oil	Every 2000 hours/1 year		Cleaning tank wall without welding slag, foreign body
13	High pressure water switch valve	If leakage from the High pressure water switch body observation hole or not	per shift	Sight check	Without water leakage,replace the Hydrosphere sealing
14		If water out from the sand pipe after turning off the water switch valve	Per shift	Sight check	Replace the valve core and valve pad, after water shut-off ,from the sand pipe or into the sand without the water
15	Cutting head	Whether water outlet from sand pipe disperse,cutting speed slow down obviously	Per shift	Sight check	Open sand tube removed after high pressure, water flow from the nozzle in the nucleus, the need to change the new sand tube, or change the nozzle
16		For the sand pipe, into the sand is damaged	Per shift	Sight check	Replacement of new sand pipe

 
 
 
 

No.	item		period	Tols and methods	Standard
17	Sand valve	Whether the Sand valve connecting tube broken to form a gas leak	Per shift	Sight check	Replacement of new sand valve connection joints
18		Clean the dust in the sand valve	Per shift	Air rifle	no dust sand in the valve cavity
19		Replace sand M10 throttling valve screws	Every 400 hours/2 months	Sight check	Replace M10 throttle screw, and adjust the screw on the bottom of the sand to valve movement, the distance between valve core is about 0.5 mm
20	Cutting table	Check the oil lubrication system status and cleaning screw and guide rail	Every 200 hours/1 month	Oil gun,open protective cover	X, Y, Z screw nut and guide to the transmission system of each slide block are lubricating oil supply; Will adhere to the guide rail, screw the dust is wiped clean after the lube oil gun evenly
21		Check accuracy of platform	Every 1000 hours/6 months	Vermier caliper	Cut a diameter of 150 mm round and the side length is 150 mm square, measured with a caliper. Roundness error control in 0.10 mm, diagonal error control in 0.05 mm
22		Measuring the X axis and Y axis screw nut backlash	Every 2000 hours/123 months	Dial indicator	By changing the system parameters to compensate or direct adjustment screw nut
23	cleaning	Before and after shift cleaning equipment	Per shift		Surface of equipment shows primary color
24		After shiift cleaning the equipment around the ground and auxiliary facilities	Per shift		The ground and auxiliary facilities, cleaness without pollution
25		Wipe The whole equipment inside and completely	Per week		Equipment surface and not easily clean clean corner are the primary colors, in addition to the surface of lubrication equipment, other parts without oil
26	others	Neat tools and accessories, set regularly	Per shift		Tools and accessories complete, neat standard
27		Damage parts and inactive parts classified setted	Per shift		Damaged parts separately store, couldn't stay with mixed with spare parts
28		fasten the electrical control cabinet and fastening screw	Every month		Electrical cabinets cable fixed screw fastening without shaking

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