Knowledge
Methods using PPR hot melt machine
A: check before installing
1: drag line board, wire, plug, socket is intact, heat equipment is loose or damaged, special reduced pipes are in good condition.
2: pipes, pipe fittings are the same brand.
Two: hot melt machine regular manufacturers generally have red and green light, red light green light on behalf of heating, on behalf of constant temperature, do not use the first time green, must be used second touchdowns green, melt when the temperature at 260 ℃ -280 ℃. Below or above this temperature, will cause the connection can not be completely fused, leaving hidden dangers of water seepage.
Three: both ends of each tube shall check whether the damage before construction, in order to prevent the transportation process of pipe caused damage, such as damage or uncertain, pipe installation, port should be reduced by 4-5cm, is not available or the heavy water hammer percussion, to prevent the pipe burst, the relative increase in service life
Four: cutting pipe must to face perpendicular to the tube axis, pipe cutting should be used for the pipe cutter.
Five: heating: without rotation of the pipe end into the heated mold head sleeve, inserted into the identified depth, at the same time, no rotating the pipe to the heating die head, reaches the prescribed mark.
Six: the heating time, immediately put the pipe from the heating mould removed simultaneously, quickly without rotation linear homogeneous inserted into the melt depth, uniform flange is formed the joint, and to control were inserted in the rebound.
20 pipe heat depth 14mm, heating time of 5 seconds, the processing time of 4 seconds, 3 minute cooldown.
25 pipe heat depth 15mm, heating time of 7 seconds, the processing time of 4 seconds, 3 minute cooldown
32 pipe heat depth 16.5mm, heating time of 8 seconds, the processing time of 4 seconds, 4 minute cooldown
40 pipe heat depth 18mm, heating time of 12 seconds, the processing time of 6 seconds, 4.5 minute cooldown
50 pipe heat depth 20mm, heating time of 18 seconds, the processing time of 6 seconds, 5 minute cooldown
63 pipe heat depth 24mm, heating time of 24 seconds, the processing time of 7 seconds, 6 minute cooldown
Seven: in the processing time on the table within the weld joint stiffness, good can also correct, a small amount of rotation, but the processing time, is strictly prohibited forced correction. Note: the pipe and pipe fittings connected can not tilt phenomenon, to do basic horizontal and vertical angle, avoid in the installation of tap is wrong, not the normal installation.
Eight: in the cooling time, no let just processed joints under external force.
1: drag line board, wire, plug, socket is intact, heat equipment is loose or damaged, special reduced pipes are in good condition.
2: pipes, pipe fittings are the same brand.
Two: hot melt machine regular manufacturers generally have red and green light, red light green light on behalf of heating, on behalf of constant temperature, do not use the first time green, must be used second touchdowns green, melt when the temperature at 260 ℃ -280 ℃. Below or above this temperature, will cause the connection can not be completely fused, leaving hidden dangers of water seepage.
Three: both ends of each tube shall check whether the damage before construction, in order to prevent the transportation process of pipe caused damage, such as damage or uncertain, pipe installation, port should be reduced by 4-5cm, is not available or the heavy water hammer percussion, to prevent the pipe burst, the relative increase in service life
Four: cutting pipe must to face perpendicular to the tube axis, pipe cutting should be used for the pipe cutter.
Five: heating: without rotation of the pipe end into the heated mold head sleeve, inserted into the identified depth, at the same time, no rotating the pipe to the heating die head, reaches the prescribed mark.
Six: the heating time, immediately put the pipe from the heating mould removed simultaneously, quickly without rotation linear homogeneous inserted into the melt depth, uniform flange is formed the joint, and to control were inserted in the rebound.
20 pipe heat depth 14mm, heating time of 5 seconds, the processing time of 4 seconds, 3 minute cooldown.
25 pipe heat depth 15mm, heating time of 7 seconds, the processing time of 4 seconds, 3 minute cooldown
32 pipe heat depth 16.5mm, heating time of 8 seconds, the processing time of 4 seconds, 4 minute cooldown
40 pipe heat depth 18mm, heating time of 12 seconds, the processing time of 6 seconds, 4.5 minute cooldown
50 pipe heat depth 20mm, heating time of 18 seconds, the processing time of 6 seconds, 5 minute cooldown
63 pipe heat depth 24mm, heating time of 24 seconds, the processing time of 7 seconds, 6 minute cooldown
Seven: in the processing time on the table within the weld joint stiffness, good can also correct, a small amount of rotation, but the processing time, is strictly prohibited forced correction. Note: the pipe and pipe fittings connected can not tilt phenomenon, to do basic horizontal and vertical angle, avoid in the installation of tap is wrong, not the normal installation.
Eight: in the cooling time, no let just processed joints under external force.
