Leister UNIROOF 300, Manual, Page: 4 / 59

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Connect the device to an outlet with a protective conductor. Any interruption of the protective con-
ductor inside or outside of the device is dangerous.
Only use extension cables with protective conductors.
The local supply voltage must match the nominal voltage specified on the device. Maximum network
impedance according to EN 61000-3-11 / UL 499 / CSA C22.2 No 88: Zmax = 0.141 Ω + j 0.088 Ω.
In case of doubt, the responsible electricity supply company should be contacted.
If the line voltage fails, then the main switch and the drive must be switched off (extend hot-air blower).
Danger to life
Before opening the device, pull the power plug out of the socket, because voltage-bearing components
and connections will be exposed when it is opened.
Danger of fire and explosion
Risk of fire and explosion caused by improper use of the automatic welding machine (such as material
overheating), and particularly in the vicinity of flammable materials and explosive gases.
Risk of burning
Do not touch the heating element tube and nozzle when they are hot. The device should always first be
allowed to cool down.
Never point the hot air flow at people or animals.
Caution
Warning
Read through the operating instructions before commissioning for the first time.
In addition to the safety instructions contained in the individual sections of this instruction manual, the following
regulations must always be observed.
1. Important safety instructions
We recommend that you always keep the instruction manual with the device.
You can find more information on the UNIROOF 700/300 at www.leister.com
Congratulations on your purchase of the UNIROOF 700/300.
You have chosen a first-class hot-air welder.
It was developed and produced in accordance with the latest state-of-the-art technology in the plastics-process-
ing industry.
It has also been manufactured using high-quality materials.
UNIROOF 700/300
Hot-air welder