HSU - MANUAL // PAGE 8
2.7 RESIDUAL RISKS
Residual risks are the risks that remain after all relevant safety standards have been complied with. These
have been evaluated in the form of a risk assessment. Residual risks associated with the installation of HSU
Handsets are listed here and throughout this Operating Manual. See also Chapter 1.1 Other Applicable
Documents on page 5. The symbols and signal words used in this Operating Manual are listed in Chapter 2.5
Explanation of Symbols and Signal Words on page 7.
WARNING Risk of death or serious injury through electric shocks
HSU Handsets are electrical devices. Although you will not have to connect the Handset
to the Control Box during assembly, basic safety precautions must be taken at all times.
Failure to observe electrical safety precautions may lead to death or serious injury
through electric shocks.
• Never open the Handset
• Ensure that the Handset is not connected to the Control Box during assembly
• Do not convert or modify the Handset in any way
• Do not immerse the Handset or its components in liquid. Clean only with a dry or
slightly damp cloth
• Do not place the Cable of the Handset on heated surfaces
• Check the housing and cables of the Handset for visible damage. Do not install or
operate damaged products.
WARNING Risk of death or serious injury through electric shocks
The HSU is a Protection Class III device. It may only be supplied with safety extra-low
voltage (SELV). Supplying the HSU with the incorrect voltage may lead to death or seri-
ous injury through electric shocks.
• Only supply the HSU with safety extra-low voltage (SELV)
• Read the product's Type Plate for exact voltage specifications
WARNING Risk of death or serious injury in explosive atmospheres
Operating the Handset in potentially explosive atmospheres may lead to death or seri-
ous injury through explosions.
• Read the relevant directives to determine if an atmosphere is potentially explosive
• Do not operate the Handset in potentially explosive atmospheres
CAUTION
Risk of minor or moderate injury through tripping
During the assembly process, you may have to step over Cables. Tripping over Cables
may lead to minor or moderate injury.
• Ensure that the assembly area is kept clear of unnecessary obstructions
• Be careful not to trip over Cables
CAUTION
Risk of minor or moderate injury through crushing
If any Handset Key becomes stuck while the system is in motion, the system may not
stop properly. This may lead to minor or moderate injury through crushing.
• Disconnect the system immediately if any Handset Key becomes stuck
2.8 SKILLED PERSONS
CAUTION Risk of injury through incorrect assembly
Only Skilled Persons have the expertise to complete the assembly process safely.
Assembly by Unskilled Persons may lead to minor or moderate injury.
• Ensure that only Skilled Persons are allowed to complete assembly
• Ensure that persons with limited ability to react to danger do not take part in the
assembly process
HSU Handsets may only be installed by Skilled Persons. A Skilled Person is defined as someone who:
• Is authorized for installation planning, installation, commissioning, or servicing of the product
