2 Safety Instructions
Rev. 09/2022
9
Operational safety!
All screws of the connectors must be adequately tightened.
Operational safety!
Contaminated gas can lead to blocking of the fuel ring and thus can cause
the gas engine to stop. Examine the VariFuel3 regularly for contamination
as a part of the regular maintenance intervals customary for your system.
Use clean gas preferably.
Risk of destruction due to electrostatic discharge!
The VariStep3 stepper motor driver may only be installed by specialized
personnel who has been trained in handling ESD sensitive components and
with due regard to relevant ESD standards. It must be installed into a con-
trol cabinet, and it must comply with the ESD standard IEC 61340-5-1.
Damage caused by electrostatic discharge is not covered by warranty.
Risk of burning!
The surfaces of the system may heat up to high temperatures.
Risk of destruction!
The stepper motor of the VariFuel is not suitable for carrying or lifting a gas
mixer. There is a danger that the stepper motor could break, and if the gas
mixer were to fall, it could result in injury or property damage.
Always carry or lift the gas mixer by its exterior housing.
Danger of interference with radio reception!
The device is not intended for use in residential areas and cannot ensure
adequate protection of radio reception in such environments.
