Siting; Power Supply - Graf oneAdvanced Operation Manual

3.3.2

Siting

The control unit must not be fitted or activated in environments with potential explosive atmos-
pheres or in places where there are flammable materials. Sparks in such environments may
cause an explosion or fire and this may result in physical injuries or even death.
Ensure that the machine cabinet is not installed above or in the direct vicinity of water vessels.
Risk of electric shock if improperly installed.
The switch cabinet must be freely accessible at all times for maintenance work. The ventilation
apertures in the switch cabinet must remain unobstructed at all times and may not be covered.
PP control cabinet:
Internal control cabinet: Ventilation apertures on the sides
External control cabinet: Ventilation apertures on the rear
Switch cabinets for indoor installation
Switch cabinets for indoor installation must be sited in a dry, well ventilated room, e.g. basement
or garage.
Switch cabinets for outdoor installation
Switch cabinets for outdoor installation should be sited, whenever possible, away from direct
sunlight which would otherwise cause overheating in the summer.
3.3.3

Power supply

The machine cabinet may be connected only to a correctly installed 230 V socket or earth cable
fitted with an upstream 16 A fuse. Additional electrical fixtures on the same fuse may disrupt op-
eration.
The power supply to the switch cabinet must be ensured at all times. If the plant is disconnected
from the mains for more than 24 hours, it will be unable to clean the wastewater properly, if at
all.
3. General
Ventilation apertures on the bottom and top
WARNING
Hazardous voltage
Danger from electric shock. An electric shock can cause
serious burns and life threatening injury.
Only specialised electricians may be assigned to work on the
electrical installations and to connect the plant to its power
supply.
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