I. Introduction

This machine is for threading of various water, electric or gas pipes ranging from 1/2" -2" It is efficient and can be widely used in equipment installation and construction industries and is an ideal device for increasing efficiency, shortening construction time, securing construction quality, and decreasing working intensity. Read this manual carefully before using the machine.

Caution: The electric threader is for threading. Follow directions and instructions of the Electric Threader User's Manual to avoid danger to operate it.

II. Technical Parameters:

III. Special Safety Requirements

1. Keep the working site clean and bright (illumination condition 600lux) for disorder and darkness may cause accidents.

2. Do not expose the machine to the rain or operate it in moist workshops to avoid electric shock.

3. Operators are only allowed to wear tight clothing Operators should take off the gloves, jewelry, watch or likewise and should not loosen his or her long hair without permission.

4. When the threading machine (including its accessories) is installed in the working site, use only the 30mA leakage resistance switch.

5. The following is forbidden when the machine is running.

...Touching or grabbing the workpieces.

...Replacing or removing components (pipe accessories, livers, or pipes etc )

...Cutting or sawing pipes using hand tools.

6. If the dangerous areas in the machine or its workpieces cannot be examined closely, the spinning workpieces or the dangerous areas should be protected, the protective devices must be reliably and stably placed. The support in devices must be stable if they are used. Install three support legs and adjust three screws to ensure height and stability.

7. Keep children away when the machine is. They are forbidden to operate the running machine or drag the cables and wires.

8. Avoid overload operation. The unsuitable accessories, overload operation and blunt or damaged screwing die must not use for fear that the machine would be damaged.

9. Extending too long pipes to operate the machine is forbidden. Keep this machine balanced and stable all the time. Calculate the danger caused by suddenly -broken workpieces (based on the length of the workpieces, the section, the material and the rotational speed) and use enough supports to avoid danger.

10. Maintain this machine with care. Lubricate the machine and replace the accessories according to the instructions of this manual to make it more safely operated. Check the cables of this machine regularly. If there is any danger, it must be repaired by the technician. Keep various handles clean and tidy all the time. Keep them out of oil pollution.

11. Tum the power off. Pull the attaching plug out when the machine is not in use.

12. Starting the motor carelessly is forbidden. Make sure the switch is at the position of “off’’ before the plug is connected with the machine.

13. Do not operate the machine when the operator is tired, or if he has touched any drugs.

14. Check the damaged spares: Check any cutting tools and spares carefully before using them, and see if they are in normal working condition and able to function. Any damaged spares must be repaired and replaced by the specially trained technicians.

15. Operation is forbidden when any switch cannot be properly turned on or off.

IV. Directions

Unpacking:

When unpacking the case, check if the accessories below are attached:

1. One barrier of cutting oil (2.5 liters);

2. Two sets of screwing dies in a tool box (4pieces each set);

3. One inner hexagon spanner and one screwdriver;

Assembling:

1. Put the accessories aside and install the support leg into the hole at the bottom of the machine;

2. Fasten it with the screw safely and reliably;

3. Suspend the threader and make it stable with supporting legs and ready for use.

Preparations to threading:

Replacing screwing die

There are two sets of screwing dies, each of which threads different pipes.

1. Select a set of screwing die that matches the diameter of the pipe. There are two groups of die, one of which figures on each screwing represents its specification; another representing the assembly sequential numbers (such as 1, 2, 3, 4).

2. Remove the die head from the sledge (Fig.1), loosen the nut of the handle, and turn the curve disk around to the maximal position of the scale.

3. Put the selected screwing dies into die grooves according to their sequential numbers, and its lock notch will fit curved disk, then pull the curved disk until the scale indicatrix of the curved disk points at the scale on the ruler of the job. Then the screwing die is fixed.

4. Place the assembled die heads on the sledge

5. Turn the adjustable plate to the position as required (see Fig .3)

Check cutting oil:

1. Check whether there is enough cutting oil in the tank;

2. Add oil when needed through the oil disk,

3. Cutting oil will overflow over the die head after the machine starts;

Note: Use thread cutting oil only to ensure to produce high-quality threads.

Threading operation:

1. Any operation requiring non-rotating condition should be done only when the machine stop running;

2. Rotate the fore and rear chucks clockwise. Then loosen three claws, install the pipe from beside the rear chuck, make it pass through the fore chuck and extend by 100mm.

3. Hold the pipe in right hand, and fix it by wheeling tight the fore and rear chucks, and then moderately tighten the hammer disk by hammering it counterclockwise(see Fig.4);

4. Pull up the cutting knife rack and beveling rack to make room. Then push down the screwing die head, make it touch the copying block (see Fig. 5), and lock it tight with locking pin. Push the button to start the machine after the die head is fixed in its proper position.

5. The pipe must rotate counterclockwise. Then rotate the sledge handle to move the die head to the pipe.

6. Apply force on the sledge hand wheel until 3-4threads are made on the pipe.

7. Stop applying force. The machine begins to thread automatically until the roller of the die head passes the copying block and falls down.

8. Stop the machine, quit the die head to the right unused position.

9. Loosen the fore and rear chucks clockwise, and remove the pipe from the rear chuck.

Cutting the pipe:

1. Pull up the screwing die head and the beveling device so that the fore and rear chucks fasten the pipe.

2. Push down the_ cutting knife rack and rotate the handle. Open the rack to let the cutting knife roller straddle on the pipe.

3. Rotate the sledge handle to move the cutting knife to the cutting position (see Fig.6)

4. Rotate the cutting knife handle to move the cutting knife to the pipe.

5. Start the machine. Switch the gear shift hand to the top gear and make the knife cut into the pipe. Cut about 0.15-0.25mm for one turn of the pipe, i.e. for each tum of the basic shaft the cutting knife handle forwards about 1/10 tum. Quit the cutting knife and pull up the rack to its position after cutting.

Caution: Cut with moderate speed and force to avoid the distortion of the pipe and the damage of the cutting knife.

Inner diameter beveling:

1. Pull up the screwing die head and cutting knife rack and push down the beveling rack to make the fore and rear chucks fasten the pipe.

2. Start the machine. Move the gearshift hand to the top gear. Rotate the sledge hand wheel and drive the beveling device to the inside of the pipe.

3. Stop the machine after the beveling. Move the beveling rack to its position.

V. Maintenance:

1. Turn the master switch to the position of "off" or unplug the power when the machine is checked or maintained.

2. The shell of this machine is cast with a whole piece of aluminum alloy. Its reduction gearbox keeps lubricating permanently. Do not impact the shell violently.

3. Cooling oil system: Clean the oil filter disk and oil suction filter disk after running for 8-12 hours. Clear the oil tank and refill if the oil is dirty or turns black.

4. Small iron filings may fell into the oil tank when threading. It is therefore essential to clean the filter disk once a week to keep the machine in order.

5. Check the cutting blade each week. Replace it when it is blunt.

6. Check the attrition of the claw points in the claw one a month. If the claw points are worn, replace them (three each set) to ensure to produce the threads of high quality.

7. Clean screwing dies and die heads every shift. Check if the teeth of the screwing die are broken. If they are, remove the cuttings between the teeth. If the die is already broken, replace a set of dies instead of the broken one only.

8. There are two oil cups on the shell of main shaft. Oil at least twice each shift to lubricate the fore and rear bearings.

9. Unplug the power when the machine is not in use. Coat corrosion resistant oil on both fore and rear guideposts and other working surfaces. Store it in a dry and airing place.