Electrical Connection; Ground Connection; Operating Procedure; Safety And Control Devices - Homa H 500 Serie Originalbetriebsanleitung

2.5.1. Electrical connection

When the machine is connected to the electrical control panel, especially when electronic devices such as soft
startup control or frequency drives are used, the relay manufacturer's specifications must be followed in order to
conform to EMC. Special separate shielding measures e.g. special cables may be necessary for the power supply
and control cables.
The connections may only be made if the relays meet the harmonized EU standards. Mobile radio equipment may
cause malfunctions.
Beware of electromagnetic radiation!
Electromagnetic radiation can pose a fatal risk for people with pacemakers. Put up appropriate signs and
make sure anyone affected is aware of the danger.

2.5.2. Ground connection

Our products (machine including protective devices and operating position, auxiliary hoisting gear) must always
be grounded. If there is a possibility that people can come into contact with the machine and the pumped liquid
(e.g. at construction sites), the grounded connection must be additionally equipped with a fault current protection
device. The electrical motors conform to motor protection class IP 68 in accordance with the valid norms.

2.6. Operating procedure

When operating the product, always follow the locally applicable laws and regulations for work safety, accident
prevention and handling electrical machinery. To help to ensure safe working practice, the responsibilities of
employees should be clearly set out by the owner. All personnel are responsible for ensuring that regulations are
observed. Certain parts such as the rotor and propeller rotate during operation in order to pump the fluid. Certain
materials can cause very sharp edges on these parts.
Beware of rotating parts!
The moving parts can crush and sever limbs. Never reach into the pump unit or the moving parts during
operation. Switch off the machine and let the moving parts come to a rest before maintenance or repair
work!

2.7. Safety and control devices

Our products are equipped with various safety and control devices. These include, for example suction strainers,
thermo sensors, sealed room monitor etc. These devices must never be dismantled or disabled.
Equipment such as thermo sensors, float switches, etc. must be checked by an electrician for proper functioning
before start-up (see the "Electrical Connection" data sheet). Please remember that certain equipment requires a
decoder device or relay to function properly, e.g. posistor and PT100 sensor. This decoder can be obtained from
the manufacturer or a specialist electronics dealer.
Personnel must be informed of the installations used and how they work.
Caution
Never operate the machine if the safety and monitoring devices have been removed or damage, or if they
do not work.

2.8. Operation in an explosive atmosphere

Products marked as explosion-proof are suitable for operation in an explosive atmosphere. The products must
meet certain guidelines for this type of use. Certain rules of conduct and guidelines must be adhered to by the
operator as well.
Products that have been approved for operation in an explosive atmosphere are marked as explosion-protected
"Ex". In addition, an "Ex" symbol must be included on the type plate! When used in an explosive atmosphere, the
additional chapter entitled "Explosion protection according to the ...standard" must be observed!

2.9. Sound pressure

Depending on the size and capacity (kW), the products produce a sound pressure of approximately 60 dB (A) and
110 dB (A).
The actual sound pressure, however, depends on several factors. These include, for example, the installation
type (wet, dry, transportable), fastening of accessories (e.g. suspension unit) and pipeline, operating site,
immersion depth, etc. Once the product has been installed, we recommend that the operator make additional
measurements under all operating conditions.
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