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Step 4:
Press the upper holder down as the lower can be fixed easily.
If this needs a lot of force, the hose at the back side is not in the correct position
and has to be reinserted.
Check again the correct position of both hoses.
Step 5:
Press both clamps sufficently down to grip the tubes.
Step 6:
Finally close the blue clamp. If both hoses are inserted correctly it needs no extra
force to close the clamps.
Step 7:
Avoid any forces on the hose in all directions during the welding process!
